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        170 Contract API jobs in London + 20 miles

        HR Data Analyst (PowerBI, Workday, HR, DAX)

        Stott & May
        London
        £450 - £500 per day
        A leading retailer is looking for an HR Data Analyst (PowerBI, Workday, HR, DAX) to join a major transformation project. As the HR Data Analyst (PowerBI, Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
        A leading retailer is looking for an HR Data Analyst (PowerBI, Workday, HR, DAX) to join a major transformation project. As the HR Data Analyst (PowerBI, Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
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        NEW
        A leading retailer is looking for a PowerBI Data Analyst (Workday, HR, DAX) to join a major transformation project. As the PowerBI Data Analyst (Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
        A leading retailer is looking for a PowerBI Data Analyst (Workday, HR, DAX) to join a major transformation project. As the PowerBI Data Analyst (Workday, HR, DAX) you have excellent skills/experience with PowerBI, Workday and HR, being responsible for designing, building, testing and maintaining PowerBI Dashboards, ensuring critical processes meet business requirements. You will have solid knowledge of Alteryx and Workday APIs to support with mapping impacts and potential rebuilds, whilst creating and maintaining technical documentation, providing expertise on best practices and support troubleshooting and enhancement initiatives. Skills and Experience - PowerBI - Workday and HR experience - API experience with Alteryx and Workday - Designing, Building, Testing and Maintaining PowerBI Dashboards for Talent Acquisition, Talent Review and People Structures
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        NEW
        Start: ASAP Duration: 6 months Pay: up to £510 per day (inside IR35) Location: Guildford (2-days per week) We're seeking a Senior Infrastructure Solution Architect for a high-impact role within a fast-moving, regulated organisation. You'll be responsible for designing repeatable infrastructure patterns and secure, resilient solutions that align with business and IT strategy. This is a senior-level role requiring strong technical expertise and the ability to engage with stakeholders at all levels. - Create and maintain infrastructure solution designs and architecture patterns - Translate business requirements into secure, scalable, and supportable technology solutions - Identify risks and propose practical mitigations - Collaborate closely with business and technical teams to influence architecture direction - Support the design and delivery of mission-critical systems
        Start: ASAP Duration: 6 months Pay: up to £510 per day (inside IR35) Location: Guildford (2-days per week) We're seeking a Senior Infrastructure Solution Architect for a high-impact role within a fast-moving, regulated organisation. You'll be responsible for designing repeatable infrastructure patterns and secure, resilient solutions that align with business and IT strategy. This is a senior-level role requiring strong technical expertise and the ability to engage with stakeholders at all levels. - Create and maintain infrastructure solution designs and architecture patterns - Translate business requirements into secure, scalable, and supportable technology solutions - Identify risks and propose practical mitigations - Collaborate closely with business and technical teams to influence architecture direction - Support the design and delivery of mission-critical systems
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        NEW
        * £500-£525 pd * Outside IR35 * 12 months rolling * 2 days on-site, London Thus, playing a key role in supporting top-line traffic and conversion rates. Experience with Elastic Search would be more than beneficial, and any exposure to Blaze or similar would be very welcome, but not a necessity as this would be handled directly by the CRM team. Scope of Work * Own and manage the product backlog, prioritising items based on business value, data, and the team's core objective to help users to easily search, browse and navigate. * Responsible for the the product road-map, including both front-end search user experiences and APIs to downstream cataloguing systems and data stores. * Lead a blended team of contractors (UX, Design, BA and more...) and full stack third party development and testing teams using agile methodologies.
        * £500-£525 pd * Outside IR35 * 12 months rolling * 2 days on-site, London Thus, playing a key role in supporting top-line traffic and conversion rates. Experience with Elastic Search would be more than beneficial, and any exposure to Blaze or similar would be very welcome, but not a necessity as this would be handled directly by the CRM team. Scope of Work * Own and manage the product backlog, prioritising items based on business value, data, and the team's core objective to help users to easily search, browse and navigate. * Responsible for the the product road-map, including both front-end search user experiences and APIs to downstream cataloguing systems and data stores. * Lead a blended team of contractors (UX, Design, BA and more...) and full stack third party development and testing teams using agile methodologies.
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        * £500-£525 pd * Outside IR35 * 12 months rolling * 2 days on-site, London Thus, playing a key role in supporting top-line traffic and conversion rates. Experience with Elastic Search would be more than beneficial, and any exposure to Blaze or similar would be very welcome, but not a necessity as this would be handled directly by the CRM team. Scope of Work * Own and manage the product backlog, prioritising items based on business value, data, and the team's core objective to help users to easily search, browse and navigate. * Responsible for the the product road-map, including both front-end search user experiences and APIs to downstream cataloguing systems and data stores. * Lead a blended team of contractors (UX, Design, BA and more...) and full stack third party development and testing teams using agile methodologies.
        * £500-£525 pd * Outside IR35 * 12 months rolling * 2 days on-site, London Thus, playing a key role in supporting top-line traffic and conversion rates. Experience with Elastic Search would be more than beneficial, and any exposure to Blaze or similar would be very welcome, but not a necessity as this would be handled directly by the CRM team. Scope of Work * Own and manage the product backlog, prioritising items based on business value, data, and the team's core objective to help users to easily search, browse and navigate. * Responsible for the the product road-map, including both front-end search user experiences and APIs to downstream cataloguing systems and data stores. * Lead a blended team of contractors (UX, Design, BA and more...) and full stack third party development and testing teams using agile methodologies.
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        Robert Half Technology are assisting a market leading real estate organisation to recruit a Salesforce Developer on a contract basis - onsite required - London based - outside IR35 Role * An experienced Salesforce Developer that can support the design, development, and optimisation of their Salesforce platform. * The Salesforce Developer will design, develop, test, and deploy custom Salesforce solutions using Apex, Visualforce, Lightning Web Components (LWC), and other technologies. * Customise standard and custom objects, workflows, process builders, and validation rules. * Integrate Salesforce with third-party applications and services via REST/SOAP APIs. * Participate in code reviews and ensure adherence to best practices and coding standards. * Troubleshoot issues and provide timely resolutions.
        Robert Half Technology are assisting a market leading real estate organisation to recruit a Salesforce Developer on a contract basis - onsite required - London based - outside IR35 Role * An experienced Salesforce Developer that can support the design, development, and optimisation of their Salesforce platform. * The Salesforce Developer will design, develop, test, and deploy custom Salesforce solutions using Apex, Visualforce, Lightning Web Components (LWC), and other technologies. * Customise standard and custom objects, workflows, process builders, and validation rules. * Integrate Salesforce with third-party applications and services via REST/SOAP APIs. * Participate in code reviews and ensure adherence to best practices and coding standards. * Troubleshoot issues and provide timely resolutions.
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        NEW
        My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
        My client is looking for a talentedMagento Developerwith strong backend experience to join their dynamic dev team. If you enjoy building custom ecommerce solutions, integrating complex systems, and collaborating in a supportive tech environment, this could be the role for you. This role is predominately remote, although the team meet up onsite once a month near Farringdon. There is no specific requirement to attend every month, however some flexibility would be beneficial. The Role Youll be responsible for delivering tailored features and functionality across a variety of ecommerce projects. * Developing and maintaining bespoke Magento functionality. * Working with the development team to ensure new code aligns with the Magento framework and delivers great performance. * Reviewing code, pull requests, and supporting peer development.
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        NEW
        Up to £600 per day Outside IR35 London (Hybrid) The Role As a Product Owner with a specialist focus on data mapping, you’ll be at the heart of enabling robust, scalable, and intelligent data flows across our internal systems. You'll define and deliver product capabilities that ensure seamless data flow between systems, APIs, and third-party platforms, driving clarity, consistency, and business value across our data landscape. * Own the data mapping product area from vision to execution. * Translate business needs into detailed data mapping requirements and user stories. * Collaborate with engineering, data, and compliance teams to implement mappings across internal systems. * Ensure data accuracy, consistency, and traceability across the platform. * Maintain documentation and support agile delivery practices.
        Up to £600 per day Outside IR35 London (Hybrid) The Role As a Product Owner with a specialist focus on data mapping, you’ll be at the heart of enabling robust, scalable, and intelligent data flows across our internal systems. You'll define and deliver product capabilities that ensure seamless data flow between systems, APIs, and third-party platforms, driving clarity, consistency, and business value across our data landscape. * Own the data mapping product area from vision to execution. * Translate business needs into detailed data mapping requirements and user stories. * Collaborate with engineering, data, and compliance teams to implement mappings across internal systems. * Ensure data accuracy, consistency, and traceability across the platform. * Maintain documentation and support agile delivery practices.
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        FEATUREDNEW
        Cardiff Based - Hybrid Working A large financial organisation is seeking a diligent Business Test Analyst to support the development of business test strategies and test plans. This role involves collaborating with various stakeholders to ensure the delivery of high-quality testing outcomes that align with business requirements. Responsibilities * Contribute to and support the development of business test strategies and test plans across multiple markets. * Demonstrate strong capabilities in functional and business acceptance testing while collaborating effectively with business stakeholders. * Translate business requirements and operational workflows into test scenarios and relevant test cases. * Define, document, and maintain business test scenarios and test cases in collaboration with business stakeholders, analysts, and product teams.
        Cardiff Based - Hybrid Working A large financial organisation is seeking a diligent Business Test Analyst to support the development of business test strategies and test plans. This role involves collaborating with various stakeholders to ensure the delivery of high-quality testing outcomes that align with business requirements. Responsibilities * Contribute to and support the development of business test strategies and test plans across multiple markets. * Demonstrate strong capabilities in functional and business acceptance testing while collaborating effectively with business stakeholders. * Translate business requirements and operational workflows into test scenarios and relevant test cases. * Define, document, and maintain business test scenarios and test cases in collaboration with business stakeholders, analysts, and product teams.
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        PREMIUM

        Java Developer

        Data Inc. (UK) Ltd
        W1, Central London
        From £400 to £500 per day
        Job Title: Java Developer Location: London UK- 5 Days onsite Vacancy Type:Contract- 12 Months Pay rate:- - * 3+ years of software development experience in one or more general purpose programming languages such as Java / JavaScript / Python, and expected to be hands-on to software development tasks Solid Experience in AWS Cloud development/deployment (other Cloud dev exp. would be a plus) * Experience implementing REST APIs (knowledge in API security would be a plus), unit tests and using a test-driven development approach and associated testing tools Familiar with SDLC process Experience in smart contract programming to develop commercial solutions (e.g. EVM, DAML), on private and public blockchains would be a plus
        Job Title: Java Developer Location: London UK- 5 Days onsite Vacancy Type:Contract- 12 Months Pay rate:- - * 3+ years of software development experience in one or more general purpose programming languages such as Java / JavaScript / Python, and expected to be hands-on to software development tasks Solid Experience in AWS Cloud development/deployment (other Cloud dev exp. would be a plus) * Experience implementing REST APIs (knowledge in API security would be a plus), unit tests and using a test-driven development approach and associated testing tools Familiar with SDLC process Experience in smart contract programming to develop commercial solutions (e.g. EVM, DAML), on private and public blockchains would be a plus
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        FEATUREDNEW

        AWS Architect

        Stott & May Professional Search Limited
        LU1, Luton
        Up to £0.00 per annum
        Start: ASAP Duration: 6 months+ Location: Luton (3-days per week in the office) Pay: negotiable rates, inside IR35 We're seeking an experienced AWS Automation Architect to lead solution design, support development teams, and ensure successful integration of AWS technologies. - Lead discussions on AWS automation capabilities - Design scalable automation solutions across AWS services - Guide developers through technical challenges - Maintain high standards of product quality - Work with the Project Manager to meet delivery timelines - Ensure solutions align with business goals and tech strategy - Provide technical mentorship to the team - Strong knowledge of Amazon Lex and Amazon Connect - Hands-on experience with Lambda, DynamoDB, S3, API Gateway, CloudWatch - Excellent problem-solving and communication skills - Ability to work independently and collaboratively
        Start: ASAP Duration: 6 months+ Location: Luton (3-days per week in the office) Pay: negotiable rates, inside IR35 We're seeking an experienced AWS Automation Architect to lead solution design, support development teams, and ensure successful integration of AWS technologies. - Lead discussions on AWS automation capabilities - Design scalable automation solutions across AWS services - Guide developers through technical challenges - Maintain high standards of product quality - Work with the Project Manager to meet delivery timelines - Ensure solutions align with business goals and tech strategy - Provide technical mentorship to the team - Strong knowledge of Amazon Lex and Amazon Connect - Hands-on experience with Lambda, DynamoDB, S3, API Gateway, CloudWatch - Excellent problem-solving and communication skills - Ability to work independently and collaboratively
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        NEW

        AWS Backend Developer

        CEI England Limited T/A CEI GB
        Isleworth, London, TW7 5QD
        £345 per day
        Hello, Role AWS Developer Duration 6+ Months Location Osterley Greater London TW7 5QD (Hybrid/2 days a week) AWS Lambda Javascript/Typescript Dynamo DB Appsync StepFunctions You have at least 2 years of experience as an AWS software developer this is a must. AWS certification is a bonus Expertise in working and following the best practices of using AWS serverless. Proven ability to refactor and write performant and clean code Existing experience or ability to very quickly pick up JavaScript/Typescript. It will be nice if you have experience working with Python, React, Lambda, DynamoDB, S3, AppSync/GraphQL, API Gateway, Step Functions etc Responsibility for reviewing and testing your own and teammates code Restless attitude and a drive to always make things better and quicker Passion for technology and a fast pace of deliver
        Hello, Role AWS Developer Duration 6+ Months Location Osterley Greater London TW7 5QD (Hybrid/2 days a week) AWS Lambda Javascript/Typescript Dynamo DB Appsync StepFunctions You have at least 2 years of experience as an AWS software developer this is a must. AWS certification is a bonus Expertise in working and following the best practices of using AWS serverless. Proven ability to refactor and write performant and clean code Existing experience or ability to very quickly pick up JavaScript/Typescript. It will be nice if you have experience working with Python, React, Lambda, DynamoDB, S3, AppSync/GraphQL, API Gateway, Step Functions etc Responsibility for reviewing and testing your own and teammates code Restless attitude and a drive to always make things better and quicker Passion for technology and a fast pace of deliver
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        Cyber Security Engineer - DevSecOp

        SUMMER-BROWNING ASSOCIATES LIMITED
        London
        Up to £0.00 per day + Excellent Day Rates
        Summer-Browning Associates is currently assisting our client in the Public Sector, who is looking for a Cyber Security Engineering for an initial six-month assignment. Location: Hybrid working - London * Experience in penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Experience in integrating automated security tools into CI/CD pipelines (SAST, DAST, dependency checking, IaC, etc.) and making necessary recommendations. * Proficiency in security testing tools such as Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc. * Ability to identify vulnerabilities and ensure secure coding practices. * Experience in maintaining security assurance across the SDLC in line with NCSC guidelines. * Knowledge of DevSecOps principles and tools (e.g., Veracode, SonarQube, GitHub Advanced Security, IaC scanning, etc.).
        Summer-Browning Associates is currently assisting our client in the Public Sector, who is looking for a Cyber Security Engineering for an initial six-month assignment. Location: Hybrid working - London * Experience in penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Experience in integrating automated security tools into CI/CD pipelines (SAST, DAST, dependency checking, IaC, etc.) and making necessary recommendations. * Proficiency in security testing tools such as Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc. * Ability to identify vulnerabilities and ensure secure coding practices. * Experience in maintaining security assurance across the SDLC in line with NCSC guidelines. * Knowledge of DevSecOps principles and tools (e.g., Veracode, SonarQube, GitHub Advanced Security, IaC scanning, etc.).
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        Senior QA Engineer (Axe core, Java, Playwright or Cypress, Typescript) - Remote Day rate: £350 - £450 (Inside IR35) Duration: 3 months Start: ASAP My new client is looking for a dedicated and proactive Senior QA Engineer with a strong background in automated testing to join our dynamic team. The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. Proficiency in Python, experience with accessibility or performance testing would also be a bonus. This role has a primary focus on writing, maintaining and improving automated tests to support our automation-first approach to quality. You are a confident communicator with stakeholders including developers, product managers, and business analysts, you understand requirements and provide feedback on quality and testability.
        Senior QA Engineer (Axe core, Java, Playwright or Cypress, Typescript) - Remote Day rate: £350 - £450 (Inside IR35) Duration: 3 months Start: ASAP My new client is looking for a dedicated and proactive Senior QA Engineer with a strong background in automated testing to join our dynamic team. The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. Proficiency in Python, experience with accessibility or performance testing would also be a bonus. This role has a primary focus on writing, maintaining and improving automated tests to support our automation-first approach to quality. You are a confident communicator with stakeholders including developers, product managers, and business analysts, you understand requirements and provide feedback on quality and testability.
        more
        Senior QA Engineer (Axe core, Java, Playwright or Cypress, Typescript) - Remote Day rate: £350 - £450 (Inside IR35) Duration: 3 months Start: ASAP My new client is looking for a dedicated and proactive Senior QA Engineer with a strong background in automated testing to join our dynamic team. The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. Proficiency in Python, experience with accessibility or performance testing would also be a bonus. This role has a primary focus on writing, maintaining and improving automated tests to support our automation-first approach to quality. You are a confident communicator with stakeholders including developers, product managers, and business analysts, you understand requirements and provide feedback on quality and testability.
        Senior QA Engineer (Axe core, Java, Playwright or Cypress, Typescript) - Remote Day rate: £350 - £450 (Inside IR35) Duration: 3 months Start: ASAP My new client is looking for a dedicated and proactive Senior QA Engineer with a strong background in automated testing to join our dynamic team. The ideal candidate will have hands-on experience with Playwright or Cypress and a solid understanding of API testing as well as a keen eye for detail. Proficiency in Python, experience with accessibility or performance testing would also be a bonus. This role has a primary focus on writing, maintaining and improving automated tests to support our automation-first approach to quality. You are a confident communicator with stakeholders including developers, product managers, and business analysts, you understand requirements and provide feedback on quality and testability.
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        Role Title: Appian Developer Location: London Duration: 30/11/2025 Via Umbrella Company We are seeking a skilled and motivated Appian Developer to join our dynamic team. The ideal candidate will be responsible for designing, developing, and implementing business process management (BPM) solutions using the Appian platform. You will work closely with business analysts, stakeholders, and other developers to deliver scalable and efficient applications that meet business requirements. Design and develop BPM applications using Appian. Collaborate with cross-functional teams to gather and analyse requirements. Build and maintain Appian objects such as records, reports, interfaces, and process models. Integrate Appian applications with external systems using APIs and web services. Participate in code reviews, testing, and deployment activities.
        Role Title: Appian Developer Location: London Duration: 30/11/2025 Via Umbrella Company We are seeking a skilled and motivated Appian Developer to join our dynamic team. The ideal candidate will be responsible for designing, developing, and implementing business process management (BPM) solutions using the Appian platform. You will work closely with business analysts, stakeholders, and other developers to deliver scalable and efficient applications that meet business requirements. Design and develop BPM applications using Appian. Collaborate with cross-functional teams to gather and analyse requirements. Build and maintain Appian objects such as records, reports, interfaces, and process models. Integrate Appian applications with external systems using APIs and web services. Participate in code reviews, testing, and deployment activities.
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        PREMIUMNEW

        Head Of Infrastructure Architecture

        Magnus Partners Talent Solutions
        London
        Competitive day rate (or equivalent)
        About the Company A dynamic London-based fintech startup is revolutionising financial services through cutting-edge technology. Their mission is to deliver secure, scalable, and innovative solutions that empower users in a rapidly evolving digital landscape. Join a forward-thinking team to build a next-generation platform that redefines how financial systems operate, driven by innovation, collaboration, and excellence. Role Overview As the Technical Lead for Infrastructure & Architecture, youll spearhead the development of a transformative financial platform, reporting directly to the CEO. Leading a compact team of two developers, youll design and deliver a robust, secure architecture that sets new industry standards. This hands-on role demands deep expertise in full-stack development, blockchain technologies, and a relentless drive to innovate.
        About the Company A dynamic London-based fintech startup is revolutionising financial services through cutting-edge technology. Their mission is to deliver secure, scalable, and innovative solutions that empower users in a rapidly evolving digital landscape. Join a forward-thinking team to build a next-generation platform that redefines how financial systems operate, driven by innovation, collaboration, and excellence. Role Overview As the Technical Lead for Infrastructure & Architecture, youll spearhead the development of a transformative financial platform, reporting directly to the CEO. Leading a compact team of two developers, youll design and deliver a robust, secure architecture that sets new industry standards. This hands-on role demands deep expertise in full-stack development, blockchain technologies, and a relentless drive to innovate.
        more

        Software Engineer - SC Cleared

        Stott & May Professional Search Limited
        London
        Up to £0.00 per day
        Hybrid - 2 Days a Week London We're looking for a Software Engineer with strong skills in Node.js, React, and TypeScript to build scalable web applications. You'll work across the stack, using Docker, Azure Web Apps, and ElasticSearch. Develop full-stack applications with Node.js, React, and TypeScript Build and maintain RESTful APIs and responsive UIs Containerize and deploy apps using Docker and Azure Web Apps Implement and optimize search with ElasticSearch Collaborate with product and DevOps teams Write clean, testable code and participate in code reviews Solid experience with Node.js, React, and TypeScript Familiarity with Docker, Azure Web Apps, and ElasticSearch Good understanding of REST APIs and modern frontend tools Comfortable with Git workflows and agile development Strong communication and problem-solving skills
        Hybrid - 2 Days a Week London We're looking for a Software Engineer with strong skills in Node.js, React, and TypeScript to build scalable web applications. You'll work across the stack, using Docker, Azure Web Apps, and ElasticSearch. Develop full-stack applications with Node.js, React, and TypeScript Build and maintain RESTful APIs and responsive UIs Containerize and deploy apps using Docker and Azure Web Apps Implement and optimize search with ElasticSearch Collaborate with product and DevOps teams Write clean, testable code and participate in code reviews Solid experience with Node.js, React, and TypeScript Familiarity with Docker, Azure Web Apps, and ElasticSearch Good understanding of REST APIs and modern frontend tools Comfortable with Git workflows and agile development Strong communication and problem-solving skills
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        NEW
        Role: Cyber Security Engineer Salary/Rate: up to £700 per day (inside IR35) Location: Hybrid London Contract Duration: until October 2025 We are currently looking for a Cyber Security Engineer for our government client. This Cyber Security Engineer role is hybrid, based between 2-3 days per week on site in central London and the remainder of the week working remotely. The contract for the Cyber Security Engineer position is until October 2025 with potential to extend, operating inside IR35. Security Clearance: Security Check ('SC Clearance') This role is inside IR35 - Due to the service of the role, it will now be based on an Umbrella solution. * Experience penetration testing, ethical hacking, or completing vulnerability assessments. * Security testing tools (e.g., Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc.).
        Role: Cyber Security Engineer Salary/Rate: up to £700 per day (inside IR35) Location: Hybrid London Contract Duration: until October 2025 We are currently looking for a Cyber Security Engineer for our government client. This Cyber Security Engineer role is hybrid, based between 2-3 days per week on site in central London and the remainder of the week working remotely. The contract for the Cyber Security Engineer position is until October 2025 with potential to extend, operating inside IR35. Security Clearance: Security Check ('SC Clearance') This role is inside IR35 - Due to the service of the role, it will now be based on an Umbrella solution. * Experience penetration testing, ethical hacking, or completing vulnerability assessments. * Security testing tools (e.g., Burp Suite, OWASP ZAP, Nikto, Nmap, Metasploit, etc.).
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        NEW
        This is a 5 month contract, paying £700 per day, inside IR35, hybrid working (2 days per week on-site in London) You will be required to have an active SC Clearance You will join the Application Security Team. This is an AppSec team focused on building security automation into delivery pipelines and conducting security focused tests against digital services. Key Responsibilities * Perform penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Evaluate the automated security tooling into CI/CD pipelines (SAST, DAST, dependency checking, IaC etc), and make necessary recommendations. * Collaborate with developers to remediate identified vulnerabilities and ensure secure code practices. * Provide expert input on cloud security (AWS, Azure, or GCP) and DevSecOps tooling.
        This is a 5 month contract, paying £700 per day, inside IR35, hybrid working (2 days per week on-site in London) You will be required to have an active SC Clearance You will join the Application Security Team. This is an AppSec team focused on building security automation into delivery pipelines and conducting security focused tests against digital services. Key Responsibilities * Perform penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Evaluate the automated security tooling into CI/CD pipelines (SAST, DAST, dependency checking, IaC etc), and make necessary recommendations. * Collaborate with developers to remediate identified vulnerabilities and ensure secure code practices. * Provide expert input on cloud security (AWS, Azure, or GCP) and DevSecOps tooling.
        more
        All applicants must hold an active SC clearance. My client is on the hunt for a Cyber Security Engineer to join a central government client of theirs. You will be joining an AppSec team focused on building security automation into delivery pipelines and conducting security focused tests against digital services. Key Responsibilities * Perform penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Evaluate the automated security tooling into CI/CD pipelines (SAST, DAST, dependency checking, IaC etc), and make necessary recommendations. * Collaborate with developers to remediate identified vulnerabilities and ensure secure code practices. * Provide expert input on cloud security (AWS, Azure, or GCP) and DevSecOps tooling. * Assist in maintaining security assurance across the SDLC in line with MoJ and NCSC guidelines.
        All applicants must hold an active SC clearance. My client is on the hunt for a Cyber Security Engineer to join a central government client of theirs. You will be joining an AppSec team focused on building security automation into delivery pipelines and conducting security focused tests against digital services. Key Responsibilities * Perform penetration testing and vulnerability assessments of web applications, APIs, and cloud infrastructure. * Evaluate the automated security tooling into CI/CD pipelines (SAST, DAST, dependency checking, IaC etc), and make necessary recommendations. * Collaborate with developers to remediate identified vulnerabilities and ensure secure code practices. * Provide expert input on cloud security (AWS, Azure, or GCP) and DevSecOps tooling. * Assist in maintaining security assurance across the SDLC in line with MoJ and NCSC guidelines.
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        Job Title: Full Stack Python Engineer Contract Duration: 6 months (Possibility of extension) Location: UK - Remote Duties As Full Stack Engineer, you will work in small teams in a highly collaborative way, use the latest technologies and enjoy seeing the direct impact from your work. Our highly skilled system architects and development managers configure software packages and build custom applications, creating the foundation for rapid and cost-effective implementation of systems that maximize value from day one. Our development teams are small, flexible and employ agile methodologies to quickly provide our consultants with the solutions they need. We combine the latest open source technologies together with traditional Enterprise software products.
        Job Title: Full Stack Python Engineer Contract Duration: 6 months (Possibility of extension) Location: UK - Remote Duties As Full Stack Engineer, you will work in small teams in a highly collaborative way, use the latest technologies and enjoy seeing the direct impact from your work. Our highly skilled system architects and development managers configure software packages and build custom applications, creating the foundation for rapid and cost-effective implementation of systems that maximize value from day one. Our development teams are small, flexible and employ agile methodologies to quickly provide our consultants with the solutions they need. We combine the latest open source technologies together with traditional Enterprise software products.
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        Job Title: Full Stack Engineer Location: London, UK (Remote) Job Type: Full time contract, 6 months with possibility of extension Software Engineer (6 years minimum experience preferably) Strong programming skills in Python Expertise with SQL databases, cloud equivalent such as Amazon RDS(PostgreSQL, MySQL) Experience utilizing LLMs and prompt engineering Familiarity with GenAI services and frameworks such as AWS Bedrock, LangGraph Familiarity with RAG Pipeline and Vector database Design and develop RESTful APIs ensuring they are efficient, scalable, and secure Experience with CI/CD pipeline setup and management. Experience in using AWS cloud platform for deploying and managing applications Familiarity with GitHub for version control and code collaboration. Knowledge of containerization Strong conceptual problem-solving Ownership mindset
        Job Title: Full Stack Engineer Location: London, UK (Remote) Job Type: Full time contract, 6 months with possibility of extension Software Engineer (6 years minimum experience preferably) Strong programming skills in Python Expertise with SQL databases, cloud equivalent such as Amazon RDS(PostgreSQL, MySQL) Experience utilizing LLMs and prompt engineering Familiarity with GenAI services and frameworks such as AWS Bedrock, LangGraph Familiarity with RAG Pipeline and Vector database Design and develop RESTful APIs ensuring they are efficient, scalable, and secure Experience with CI/CD pipeline setup and management. Experience in using AWS cloud platform for deploying and managing applications Familiarity with GitHub for version control and code collaboration. Knowledge of containerization Strong conceptual problem-solving Ownership mindset
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        Job Title: D365 CE Developer (Contract) Location: Central London (Hybrid – 3 days onsite per week) Contract Duration: 3 Months - Outside IR35 We are seeking an experienced Dynamics 365 Customer Engagement (CE) Developer for a 3-month contract. The ideal candidate will have strong experience in data migration and system integration within the D365 CE environment. This hybrid role requires 3 days per week onsite in Central London. * Develop and customise solutions in Dynamics 365 CE * Lead and support data migration activities * Integrate D365 CE with external systems using APIs and middleware * Collaborate with business and technical teams to ensure seamless delivery * Proven experience as a D365 CE Developer * Strong skills in data migration and integration * Hands-on experience with Power Platform, JavaScript, plug-ins, and workflows
        Job Title: D365 CE Developer (Contract) Location: Central London (Hybrid – 3 days onsite per week) Contract Duration: 3 Months - Outside IR35 We are seeking an experienced Dynamics 365 Customer Engagement (CE) Developer for a 3-month contract. The ideal candidate will have strong experience in data migration and system integration within the D365 CE environment. This hybrid role requires 3 days per week onsite in Central London. * Develop and customise solutions in Dynamics 365 CE * Lead and support data migration activities * Integrate D365 CE with external systems using APIs and middleware * Collaborate with business and technical teams to ensure seamless delivery * Proven experience as a D365 CE Developer * Strong skills in data migration and integration * Hands-on experience with Power Platform, JavaScript, plug-ins, and workflows
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        FEATUREDNEW

        Automation Developer

        Networking People (UK) Limited
        London
        £550 - £600 per day + Deemed Inside IR35 via Umbrella solution
        Contract: Automation Python Developer Start Date: ASAP Duration: 6 months Location: Remote working (possible occasional travel to London site) Rate: £550 - 600 a day (Deemed Inside IR35 via umbrella solution) We are urgently seeking an experienced Automation Developer (With Python and Jinja2 expertise) to join a major financial services organisation on a business-critical infrastructure modernisation and automation programme. This is a fantastic opportunity to play a key role in delivering cutting-edge automation solutions within a dynamic and forward-thinking environment. * Assist with migrating multi-tenanted network services onto a new platform. * Drive improvements in the UAT process through automation. * Build automation capabilities for infrastructure testing.
        Contract: Automation Python Developer Start Date: ASAP Duration: 6 months Location: Remote working (possible occasional travel to London site) Rate: £550 - 600 a day (Deemed Inside IR35 via umbrella solution) We are urgently seeking an experienced Automation Developer (With Python and Jinja2 expertise) to join a major financial services organisation on a business-critical infrastructure modernisation and automation programme. This is a fantastic opportunity to play a key role in delivering cutting-edge automation solutions within a dynamic and forward-thinking environment. * Assist with migrating multi-tenanted network services onto a new platform. * Drive improvements in the UAT process through automation. * Build automation capabilities for infrastructure testing.
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        What is the average salary for API in London?

        Average salary per year
        £72,499

        The average salary for a API in London is £72,499. API in London salaries range from £62,499 to £87,499.

        Frequently Asked Questions

        How many contract API jobs are there in London?
        There are 170 contract API jobs within 20 miles of London available on Jobsite right now.
        Where in London are these contract jobs?
        You can find contract jobs in City of London, South West London, West London.
        What other similar jobs are there to contract API jobs in London?
        As well as contract API jobs in London, you can find contract IT, Software Development, Management, amongst many others.