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        20 Contract API jobs in The City, City of London + 20 miles

        176 exact matches jobs are outside your preferred location

        Penetration Tester

        Damia Group Ltd
        Merryhill Green, RG41
        £400 - £415 per day
        All applicants must hold an active SC clearance. My client is a global leading IT consultancy. They are on the hunt for an SC cleared PEN Tester to join them on an assigment until the end of the year. Key Responsibilities * Conduct manual and automated penetration tests on web applications, networks, APIs, and mobile platforms * Identify, exploit, and document security vulnerabilities with detailed risk assessment * Develop and execute red team exercises and threat simulations * Collaborate with development and infrastructure teams to remediate findings * Prepare comprehensive reports outlining findings, impact, and mitigation strategies * Stay current with latest attack vectors, tools, and security trends * Assist in security awareness training and internal education efforts * Contribute to security policies and best practices development
        All applicants must hold an active SC clearance. My client is a global leading IT consultancy. They are on the hunt for an SC cleared PEN Tester to join them on an assigment until the end of the year. Key Responsibilities * Conduct manual and automated penetration tests on web applications, networks, APIs, and mobile platforms * Identify, exploit, and document security vulnerabilities with detailed risk assessment * Develop and execute red team exercises and threat simulations * Collaborate with development and infrastructure teams to remediate findings * Prepare comprehensive reports outlining findings, impact, and mitigation strategies * Stay current with latest attack vectors, tools, and security trends * Assist in security awareness training and internal education efforts * Contribute to security policies and best practices development
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        NEW
        Job Opportunity: SailPoint Engineer - Identity Security Cloud Specialist?? Location: London?? Type: Contract 6 Months Outside IR35?? Department: Cybersecurity / IAM Up to £500/day Outside IR35?? We're looking for a SailPoint Engineer with a strong background in Identity Security Cloud solutions and technical identity recruitment processes. You will play a key role in streamlining our Identity and Access Management (IAM) by leveraging SailPoint's capabilities to ensure least-privilege access, enforce zero trust policies, and support full lifecycle identity governance - all while staying compliant with global regulations. * Design, configure, and maintain SailPoint IdentityNow and IdentityIQ solutions across cloud and on-prem environments. * Implement and optimize least-privilege access policies, automated role management, and real-time access monitoring.
        Job Opportunity: SailPoint Engineer - Identity Security Cloud Specialist?? Location: London?? Type: Contract 6 Months Outside IR35?? Department: Cybersecurity / IAM Up to £500/day Outside IR35?? We're looking for a SailPoint Engineer with a strong background in Identity Security Cloud solutions and technical identity recruitment processes. You will play a key role in streamlining our Identity and Access Management (IAM) by leveraging SailPoint's capabilities to ensure least-privilege access, enforce zero trust policies, and support full lifecycle identity governance - all while staying compliant with global regulations. * Design, configure, and maintain SailPoint IdentityNow and IdentityIQ solutions across cloud and on-prem environments. * Implement and optimize least-privilege access policies, automated role management, and real-time access monitoring.
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        NEWPREMIUM
        My client, a leader in the AI space, is seeking an experienced Vue.JS Frontend Developer to join and help build/enhance a Multi-Criteria Decision Analysis (MCDA) platform used worldwide. You'll be working on a modern Vue.js 3 codebase with PrimeVue and TypeScript, building AI-assisted decision-making tools and data-heavy interfaces. This will be initially 3+ months, fully remote and outside IR35. * Develop and optimise frontend features with Vue 3, PrimeVue, TypeScript, and Tailwind CSS * Work across the full development lifecycle, from design to production deployment * Integrate with REST APIs & FastAPI backend, enabling real-time collaboration and complex data visualisations * Drive AI-assisted development using Claude Code CLI, GitHub Spec Kit, and LLM APIs * Implement comprehensive Playwright testing (E2E, component, visual, accessibility, and performance testing)
        My client, a leader in the AI space, is seeking an experienced Vue.JS Frontend Developer to join and help build/enhance a Multi-Criteria Decision Analysis (MCDA) platform used worldwide. You'll be working on a modern Vue.js 3 codebase with PrimeVue and TypeScript, building AI-assisted decision-making tools and data-heavy interfaces. This will be initially 3+ months, fully remote and outside IR35. * Develop and optimise frontend features with Vue 3, PrimeVue, TypeScript, and Tailwind CSS * Work across the full development lifecycle, from design to production deployment * Integrate with REST APIs & FastAPI backend, enabling real-time collaboration and complex data visualisations * Drive AI-assisted development using Claude Code CLI, GitHub Spec Kit, and LLM APIs * Implement comprehensive Playwright testing (E2E, component, visual, accessibility, and performance testing)
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        NEW

        Power Platform Developer

        Hays
        London
        £500.0 - £550.0 per day + up to £550 pd (Inside IR35)
        Up to £550 per day (Inside IR35) London / Hybrid 6 months My client is an instantly recognisable consultancy who require a Power Platform Developer with Active Security Clearance (SC) to join a business-critical programme. * Proven experience working as a Power Platform Developer with Active Security Clearance (SC). * Involvement developing solutions, with Power Apps, Power Automate and Dataverse. * Working experience of writing advanced DAX measures, and using Power Query * Strong proficiency in SQL to build complex data models, with a good understanding of data modelling principles and best practices * Must have experience mentoring, guiding and supporting juniors * Awareness of Dataverse API * Some experience with Azure Synapse Analytics, Azure Functions, Logic Apps or Azure SQL Database. * Familiarity with Agile ways of working / Project Management methodologies
        Up to £550 per day (Inside IR35) London / Hybrid 6 months My client is an instantly recognisable consultancy who require a Power Platform Developer with Active Security Clearance (SC) to join a business-critical programme. * Proven experience working as a Power Platform Developer with Active Security Clearance (SC). * Involvement developing solutions, with Power Apps, Power Automate and Dataverse. * Working experience of writing advanced DAX measures, and using Power Query * Strong proficiency in SQL to build complex data models, with a good understanding of data modelling principles and best practices * Must have experience mentoring, guiding and supporting juniors * Awareness of Dataverse API * Some experience with Azure Synapse Analytics, Azure Functions, Logic Apps or Azure SQL Database. * Familiarity with Agile ways of working / Project Management methodologies
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        NEW

        DevSecOps Pentester

        Stackstudio Digital Ltd.
        London
        From £450 to £500 per day
        Role/Job Title: DevSecOps Pentester Work Location: London (2 - 3days) The Role Conducts security assessments and penetration tests across CI/CD pipelines, cloud infrastructure, and application environments. Integrates automated security tools and practices within DevOps workflows to ensure continuous security validation. Identifies and exploits vulnerabilities in code, containers, APIs, and infrastructure-as-code before they reach production. Collaborates with development, security, and operations teams to implement remediation and improve security posture. Stays current with threat landscapes, tools, and methodologies to proactively defend against evolving cyber risks in general and more specific to an airline industry, transportation sector. Your Responsibilities
        Role/Job Title: DevSecOps Pentester Work Location: London (2 - 3days) The Role Conducts security assessments and penetration tests across CI/CD pipelines, cloud infrastructure, and application environments. Integrates automated security tools and practices within DevOps workflows to ensure continuous security validation. Identifies and exploits vulnerabilities in code, containers, APIs, and infrastructure-as-code before they reach production. Collaborates with development, security, and operations teams to implement remediation and improve security posture. Stays current with threat landscapes, tools, and methodologies to proactively defend against evolving cyber risks in general and more specific to an airline industry, transportation sector. Your Responsibilities
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        NEW
        New Job Opportunity - Senior Offshore Structures Engineer - 12 Month Outside Ir35 Contract Our Client has a requirement for a Senior Offshore Structures Engineer, who will be required to work on a contract basis fully remote. Contract Length: Initially 12 Months Location: Fully Remote (Offices in Basingstoke, UK) Engagement: Outside IR35 or PAYE (both considered) Role Overview We are seeking an experienced Senior Offshore Structural Engineer to join our team. You will be responsible for the execution, review, and approval of structural analyses and designs for offshore substructures and topsides across all project phases, from concept through to operations. Key Responsibilities * Perform structural analyses for offshore substructures and topsides. * Define and evaluate optimal technical solutions during all project stages (feasibility, FEED, detailed design).
        New Job Opportunity - Senior Offshore Structures Engineer - 12 Month Outside Ir35 Contract Our Client has a requirement for a Senior Offshore Structures Engineer, who will be required to work on a contract basis fully remote. Contract Length: Initially 12 Months Location: Fully Remote (Offices in Basingstoke, UK) Engagement: Outside IR35 or PAYE (both considered) Role Overview We are seeking an experienced Senior Offshore Structural Engineer to join our team. You will be responsible for the execution, review, and approval of structural analyses and designs for offshore substructures and topsides across all project phases, from concept through to operations. Key Responsibilities * Perform structural analyses for offshore substructures and topsides. * Define and evaluate optimal technical solutions during all project stages (feasibility, FEED, detailed design).
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        NEW
        ServiceNow Automation Analyst - SC Cleared Location: London / Gloucester / Warrington (Hybrid) Duration: 6 Months (Contract) Day Rate: £382.50 (Inside IR35) Start Date: ASAP Clearance Required: Security Clearance - Mandatory About the Role We are seeking an experienced ServiceNow Automation Analyst to join our team on a 6-month contract. You will be responsible for analysing, designing, developing, and implementing automation solutions within the ServiceNow platform, enhancing IT service delivery, operational efficiency, and user experience. This is a hands-on technical role requiring strong ServiceNow development skills, automation expertise, and the ability to collaborate effectively with stakeholders across IT and business units. Key Responsibilities Collaborate with IT and business stakeholders to gather and analyse automation requirements.
        ServiceNow Automation Analyst - SC Cleared Location: London / Gloucester / Warrington (Hybrid) Duration: 6 Months (Contract) Day Rate: £382.50 (Inside IR35) Start Date: ASAP Clearance Required: Security Clearance - Mandatory About the Role We are seeking an experienced ServiceNow Automation Analyst to join our team on a 6-month contract. You will be responsible for analysing, designing, developing, and implementing automation solutions within the ServiceNow platform, enhancing IT service delivery, operational efficiency, and user experience. This is a hands-on technical role requiring strong ServiceNow development skills, automation expertise, and the ability to collaborate effectively with stakeholders across IT and business units. Key Responsibilities Collaborate with IT and business stakeholders to gather and analyse automation requirements.
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        NEW

        ESRI GIS Subject Matter Expert (SME)

        Stackstudio Digital Ltd.
        RG40, Wokingham
        From £400 to £450 per day
        Role/Job Title: ESRI GIS Subject Matter Expert (SME) Work Location: Wokingham If Hybrid, Days Required in Office: 3 days a week The Role We are seeking an experienced ESRI GIS Subject Matter Expert (SME) to lead the design, implementation, and optimization of a scalable GIS platform that supports strategic spatial energy planning. The platform will enable environmental impact assessments, economic modelling, and the integration of community preferences. The SME will be responsible for consolidating and migrating diverse spatial datasets into a unified system, ensuring data accuracy, quality, and accessibility, while supporting secure, role-based access, automation, and interoperability with internal and external systems. Your Responsibilities Platform Design & Implementation
        Role/Job Title: ESRI GIS Subject Matter Expert (SME) Work Location: Wokingham If Hybrid, Days Required in Office: 3 days a week The Role We are seeking an experienced ESRI GIS Subject Matter Expert (SME) to lead the design, implementation, and optimization of a scalable GIS platform that supports strategic spatial energy planning. The platform will enable environmental impact assessments, economic modelling, and the integration of community preferences. The SME will be responsible for consolidating and migrating diverse spatial datasets into a unified system, ensuring data accuracy, quality, and accessibility, while supporting secure, role-based access, automation, and interoperability with internal and external systems. Your Responsibilities Platform Design & Implementation
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        NEW
        Role Title: Security Engineer Duration: 6 Months Location: London (2-3 Days onsite) Rate: £650 Per day - Umbrella only Would you like to join a global leader in consulting, technology services and digital transformation? Our client is at the forefront of innovation to address the entire breadth of opportunities in the evolving world of cloud, digital and platforms. Role purpose / summary * SSPM or CSPM knowledge, policies, and configurations * API knowledge - CSPM integration with other tools using APIs * ServiceNow and/or O365 experience and security aspects of these applications * Docker experience on both windows and Unix * CSPM experience with AppOmni or other native Microsoft tools * SIEM integration * Hands on Unix or Windows skills * Infrastructure as a Code (IaC), ARM, CloudFormation, Terraform, GIT experience * Excellent documentation skills
        Role Title: Security Engineer Duration: 6 Months Location: London (2-3 Days onsite) Rate: £650 Per day - Umbrella only Would you like to join a global leader in consulting, technology services and digital transformation? Our client is at the forefront of innovation to address the entire breadth of opportunities in the evolving world of cloud, digital and platforms. Role purpose / summary * SSPM or CSPM knowledge, policies, and configurations * API knowledge - CSPM integration with other tools using APIs * ServiceNow and/or O365 experience and security aspects of these applications * Docker experience on both windows and Unix * CSPM experience with AppOmni or other native Microsoft tools * SIEM integration * Hands on Unix or Windows skills * Infrastructure as a Code (IaC), ARM, CloudFormation, Terraform, GIT experience * Excellent documentation skills
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        PREMIUM
        We are looking for a talented SAP Integration Lead to join our clients team. In this role, you will design, implement, and maintain integrated systems that meet our clients' needs. You will work closely with various departments to ensure seamless integration of software, hardware, and enterprise platforms such as SAP ERP. • Design Integration Solutions: Develop robust integration frameworks for diverse systems and applications, including ERP platforms like SAP. • Collaborate with Teams: Work alongside software developers, architects, and project managers to gather and define integration requirements. • Implement and Test: Execute integration solutions and perform thorough testing to ensure optimal functionality and performance. • Monitor and Troubleshoot: Continuously oversee system integrations, identify issues, and provide prompt resolutions.
        We are looking for a talented SAP Integration Lead to join our clients team. In this role, you will design, implement, and maintain integrated systems that meet our clients' needs. You will work closely with various departments to ensure seamless integration of software, hardware, and enterprise platforms such as SAP ERP. • Design Integration Solutions: Develop robust integration frameworks for diverse systems and applications, including ERP platforms like SAP. • Collaborate with Teams: Work alongside software developers, architects, and project managers to gather and define integration requirements. • Implement and Test: Execute integration solutions and perform thorough testing to ensure optimal functionality and performance. • Monitor and Troubleshoot: Continuously oversee system integrations, identify issues, and provide prompt resolutions.
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        NEW

        Lead AI Engineer

        Change-IT Consulting Ltd
        London
        From £700 to £750 per day
        Lead Applied AI Engineer 6 Months Hybrid between London, Bristol or Manchester INSIDE IR35 £700-£750 per day Change-IT are looking for a Lead AI Engineer to join a large central government organisation based in London. This role is for 6 months initially, with possibility of extension. This role is INSIDE IR35, paying between £700-£750 per day dependent on experience. * Proficiency in Python. * Working in dynamic environments and navigating ambiguity, prioritising ruthlessly where necessary * Have a humble attitude and an eagerness to help others with empathy * Passion for building products that augment human capabilities and improves citizens lives. * Experience with natural language processing, deep learning and generative AI. * Familiarity with tools for working with Large Language Models via API or in a local context (e.g. HuggingFace transformers).
        Lead Applied AI Engineer 6 Months Hybrid between London, Bristol or Manchester INSIDE IR35 £700-£750 per day Change-IT are looking for a Lead AI Engineer to join a large central government organisation based in London. This role is for 6 months initially, with possibility of extension. This role is INSIDE IR35, paying between £700-£750 per day dependent on experience. * Proficiency in Python. * Working in dynamic environments and navigating ambiguity, prioritising ruthlessly where necessary * Have a humble attitude and an eagerness to help others with empathy * Passion for building products that augment human capabilities and improves citizens lives. * Experience with natural language processing, deep learning and generative AI. * Familiarity with tools for working with Large Language Models via API or in a local context (e.g. HuggingFace transformers).
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        NEW

        Camunda Developer

        Stott & May Professional Search Limited
        London
        £340 - £382.50 per day
        Location: London (Hybrid - 2-3 days on-site) Duration: Until 31st December 2026 Day Rate: £382.50 (Inside IR35) About the Role We are seeking an experienced Camunda Developer to design, develop, and deploy business process automation solutions using the Camunda BPM platform. This role is pivotal in building scalable, process-driven applications that streamline business workflows and decision-making. You will collaborate closely with business analysts, architects, and developers to deliver high-quality workflow orchestration solutions. This long-term contract offers the opportunity to work on large-scale digital transformation initiatives within a secure environment. Key Responsibilities Design and implement BPMN workflows and DMN decision tables using Camunda. Develop custom Java delegates and external task workers.
        Location: London (Hybrid - 2-3 days on-site) Duration: Until 31st December 2026 Day Rate: £382.50 (Inside IR35) About the Role We are seeking an experienced Camunda Developer to design, develop, and deploy business process automation solutions using the Camunda BPM platform. This role is pivotal in building scalable, process-driven applications that streamline business workflows and decision-making. You will collaborate closely with business analysts, architects, and developers to deliver high-quality workflow orchestration solutions. This long-term contract offers the opportunity to work on large-scale digital transformation initiatives within a secure environment. Key Responsibilities Design and implement BPMN workflows and DMN decision tables using Camunda. Develop custom Java delegates and external task workers.
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        NEW

        Java Developer - Active SC

        Hays
        London
        £600.0 - £640.0 per day + up to £640 pd (Inside IR35)
        Up to £640 per day (Inside IR35) London / Remote 6 months My client is an instantly recognisable consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Lead Java Developer within the public sector * Active Security Clearance (SC) * Java (8/11/17+): Expert-level programming and deep understanding of the language and its core libraries * Spring Boot: Expert in building RESTful APIs and microservices * AWS: Strong experience with core AWS services (EC2, S3, Lambda, IAM, etc.) * Kafka / Messaging Systems: Expertise in building event-driven architectures * SQL: Strong experience with relational databases and query optimization * REST / JSON APIs: Designing, developing, and consuming scalable APIs * Docker: Proficiency in containerizing applications for local and cloud environments
        Up to £640 per day (Inside IR35) London / Remote 6 months My client is an instantly recognisable consultancy who urgently requires a Lead Full Stack Developer to join a business-critical programme. * Proven experience working as a Lead Java Developer within the public sector * Active Security Clearance (SC) * Java (8/11/17+): Expert-level programming and deep understanding of the language and its core libraries * Spring Boot: Expert in building RESTful APIs and microservices * AWS: Strong experience with core AWS services (EC2, S3, Lambda, IAM, etc.) * Kafka / Messaging Systems: Expertise in building event-driven architectures * SQL: Strong experience with relational databases and query optimization * REST / JSON APIs: Designing, developing, and consuming scalable APIs * Docker: Proficiency in containerizing applications for local and cloud environments
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        NEW
        Position: Backend Engineer Location: Remote (UK) Work Type: Contract Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
        Position: Backend Engineer Location: Remote (UK) Work Type: Contract Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
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        NEWFEATURED

        Full Stack Developer (python/AWS)

        Stott & May Professional Search Limited
        London
        Up to £0.00 per annum
        *candidates must hold an active SC Clearance* Start: ASAP Duration: 6 months+ Location: 3 days per week in London Pay: negotiable DoE, INSIDE IR35 We are seeking a talented Full Stack Engineer with strong experience in AWS and Python to join our growing team. You'll play a key role in designing, developing, and deploying robust applications that power our business and delight our users. Responsibilities - Design, develop, and maintain scalable web applications using Python (Django, Flask, or FastAPI). - Architect and implement cloud-native solutions on AWS (EC2, Lambda, S3, RDS, etc.). - Build and integrate RESTful APIs and microservices. - Collaborate with front-end developers to deliver seamless user experiences (React, Vue, or Angular). - Ensure application security, performance, and reliability.
        *candidates must hold an active SC Clearance* Start: ASAP Duration: 6 months+ Location: 3 days per week in London Pay: negotiable DoE, INSIDE IR35 We are seeking a talented Full Stack Engineer with strong experience in AWS and Python to join our growing team. You'll play a key role in designing, developing, and deploying robust applications that power our business and delight our users. Responsibilities - Design, develop, and maintain scalable web applications using Python (Django, Flask, or FastAPI). - Architect and implement cloud-native solutions on AWS (EC2, Lambda, S3, RDS, etc.). - Build and integrate RESTful APIs and microservices. - Collaborate with front-end developers to deliver seamless user experiences (React, Vue, or Angular). - Ensure application security, performance, and reliability.
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        NEW
        About Dune Dune is on a mission to make crypto data accessible. Were a collaborative multi-chain analytics platform used by thousands of developers, analysts, & investors to understand the on-chain world and the frontiers of finance. Were a team of ~55 employees, working together across Europe and eastern US timezones ?. We believe in our mission, and in building a powerful, open product that allows individuals and communities to do deep research into important ecosystems like Bitcoin, Ethereum, Solana, and many more. Were backed by some of the world's best investors. In February 2022, we announced our Series B funding round led by Coatue and Union Square Ventures, an important milestone that allowed us to double down on our mission. Were using the funds to educate, reward and empower a new generation of onchain analysts aka Wizards
        About Dune Dune is on a mission to make crypto data accessible. Were a collaborative multi-chain analytics platform used by thousands of developers, analysts, & investors to understand the on-chain world and the frontiers of finance. Were a team of ~55 employees, working together across Europe and eastern US timezones ?. We believe in our mission, and in building a powerful, open product that allows individuals and communities to do deep research into important ecosystems like Bitcoin, Ethereum, Solana, and many more. Were backed by some of the world's best investors. In February 2022, we announced our Series B funding round led by Coatue and Union Square Ventures, an important milestone that allowed us to double down on our mission. Were using the funds to educate, reward and empower a new generation of onchain analysts aka Wizards
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        NEW
        SuiteCRM Developer – Contract (Fully Remote) Rate: £420p/d Inside IR35 A public sector organisation are seeking an experienced SuiteCRM Developer to deliver customisation, integration, and ongoing support for their CRM platform. The contract is an ASAP start (subject to BPSS clearance), inside IR35, £420/day, and offered on a rolling monthly basis with an initial 4–6 months’ work. The role is fully remote with very occasional site visits required. * Designing, developing, and customising SuiteCRM modules, workflows, and plug-ins * Building and maintaining API integrations (REST/SOAP) * Troubleshooting, optimising performance, and ensuring data integrity/security * Collaborating with analysts, QA, and UX teams to deliver robust solutions * 8+ years’ hands-on experience with SuiteCRM or SugarCRM development
        SuiteCRM Developer – Contract (Fully Remote) Rate: £420p/d Inside IR35 A public sector organisation are seeking an experienced SuiteCRM Developer to deliver customisation, integration, and ongoing support for their CRM platform. The contract is an ASAP start (subject to BPSS clearance), inside IR35, £420/day, and offered on a rolling monthly basis with an initial 4–6 months’ work. The role is fully remote with very occasional site visits required. * Designing, developing, and customising SuiteCRM modules, workflows, and plug-ins * Building and maintaining API integrations (REST/SOAP) * Troubleshooting, optimising performance, and ensuring data integrity/security * Collaborating with analysts, QA, and UX teams to deliver robust solutions * 8+ years’ hands-on experience with SuiteCRM or SugarCRM development
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        Job Role: Software Engineer - Angular Job Type: Contract (part time) Location: Remote (UK only) Daily rate: £425 per day (Outside IR35) * Duration: 12 months * Commitment: 1-2 days per month (final week of each month) * Scope: Maintenance support, system health, troubleshooting, and minor enhancements We are hiring on behalf of our client, an established organisation with a large-scale digital presence. They are seeking reliable ongoing support to maintain and optimise their Contentful-based web platform. This role will initially focus on the current tech stack and then transition to their new website following its launch in late October. This is a 12-month contract requiring approximately three days of support each month. The work is primarily maintenance-focused, ensuring system stability, keeping packages up to date, and addressing issues as they arise.
        Job Role: Software Engineer - Angular Job Type: Contract (part time) Location: Remote (UK only) Daily rate: £425 per day (Outside IR35) * Duration: 12 months * Commitment: 1-2 days per month (final week of each month) * Scope: Maintenance support, system health, troubleshooting, and minor enhancements We are hiring on behalf of our client, an established organisation with a large-scale digital presence. They are seeking reliable ongoing support to maintain and optimise their Contentful-based web platform. This role will initially focus on the current tech stack and then transition to their new website following its launch in late October. This is a 12-month contract requiring approximately three days of support each month. The work is primarily maintenance-focused, ensuring system stability, keeping packages up to date, and addressing issues as they arise.
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        NEW

        iOS Mobile Developer

        Hays
        London
        £600.0 - £610.0 per day + c£610 per day (inside IR35)
        Your new role You will be part of the team that will be responsible for developing and maintaining features for the iOS variant of the App. Working in a multi-disciplinary team of tech, design, business, product, infrastructure and test, you will help to design, develop, test and deliver new features while also maintaining existing features. You will be involved throughout the entire product lifecycle being chiefly responsible for producing high-quality, performant, well-documented and tested features that deliver a first-class experience to millions of users across England. Resonsibilities - Work with a multi-disciplinary team to design, document and develop high quality, scalable solutions for the NHS App's iOS application using Swift and Swift UI. - Create appropriate unit and integration tests for your work.
        Your new role You will be part of the team that will be responsible for developing and maintaining features for the iOS variant of the App. Working in a multi-disciplinary team of tech, design, business, product, infrastructure and test, you will help to design, develop, test and deliver new features while also maintaining existing features. You will be involved throughout the entire product lifecycle being chiefly responsible for producing high-quality, performant, well-documented and tested features that deliver a first-class experience to millions of users across England. Resonsibilities - Work with a multi-disciplinary team to design, document and develop high quality, scalable solutions for the NHS App's iOS application using Swift and Swift UI. - Create appropriate unit and integration tests for your work.
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        NEW
        Contract QA Engineer London/Hybrid (2 days on site, 3 from home) Duration; 4 months (likely to extend) Day rate £450 - outside IR35 A leading UK digital consultancy is seeking a Quality Assurance Engineer to join a high-performing delivery team working on a major client in the property technology sector. The team develops products that make the experience of finding a home better, quicker, and more enjoyable for users. This role goes beyond testing - it is about championing quality at every stage of the software development lifecycle. The successful candidate will help prevent defects rather than just find them, embed quality throughout the process, and support the team in delivering robust, secure, accessible, and user-friendly systems.
        Contract QA Engineer London/Hybrid (2 days on site, 3 from home) Duration; 4 months (likely to extend) Day rate £450 - outside IR35 A leading UK digital consultancy is seeking a Quality Assurance Engineer to join a high-performing delivery team working on a major client in the property technology sector. The team develops products that make the experience of finding a home better, quicker, and more enjoyable for users. This role goes beyond testing - it is about championing quality at every stage of the software development lifecycle. The successful candidate will help prevent defects rather than just find them, embed quality throughout the process, and support the team in delivering robust, secure, accessible, and user-friendly systems.
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        NEW
        Bonus: Up to 10% of salary, depending on company performance Share Options: £10,000 Individual Contributor Level 3 as per our Career Development Framework. Number of vacancies: 1 We've calculated this compensation in line with our Benchmarking Philosophy. An exciting opportunity to join a technology scale-up focused on eliminating fuel poverty and improving living standards in Social Housing as a QA Engineer. Our mission At Switchee, we believe that everyone deserves to live in a decent home and that the environments we inhabit have a massive influence on our ability to enjoy life and prosper. One in five households in the UK live in social housing, a sector with the right values at its core but that has historically struggled to deploy innovations in the home.
        Bonus: Up to 10% of salary, depending on company performance Share Options: £10,000 Individual Contributor Level 3 as per our Career Development Framework. Number of vacancies: 1 We've calculated this compensation in line with our Benchmarking Philosophy. An exciting opportunity to join a technology scale-up focused on eliminating fuel poverty and improving living standards in Social Housing as a QA Engineer. Our mission At Switchee, we believe that everyone deserves to live in a decent home and that the environments we inhabit have a massive influence on our ability to enjoy life and prosper. One in five households in the UK live in social housing, a sector with the right values at its core but that has historically struggled to deploy innovations in the home.
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        NEW
        Location: London, UK (Hybrid 23 days onsite) Type: Contract (6 months) | Rate: Market| Start Date: ASAP About the Role Our client, a leading global organization, is looking for an experienced DevSecOps Pentester to join a leading security team in London. Youll perform penetration tests and security assessments across CI/CD pipelines, cloud environments, and applications, integrating automated security tools and practices into DevOps workflows. This role is ideal for someone who can identify vulnerabilities in code, containers, APIs, and infrastructure-as-code before production, collaborate closely with DevOps and development teams, and help improve enterprise security posture. Key Responsibilities Integrate security tools and practices into CI/CD pipelines for continuous validation.
        Location: London, UK (Hybrid 23 days onsite) Type: Contract (6 months) | Rate: Market| Start Date: ASAP About the Role Our client, a leading global organization, is looking for an experienced DevSecOps Pentester to join a leading security team in London. Youll perform penetration tests and security assessments across CI/CD pipelines, cloud environments, and applications, integrating automated security tools and practices into DevOps workflows. This role is ideal for someone who can identify vulnerabilities in code, containers, APIs, and infrastructure-as-code before production, collaborate closely with DevOps and development teams, and help improve enterprise security posture. Key Responsibilities Integrate security tools and practices into CI/CD pipelines for continuous validation.
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        Pentester

        Queen Square Recruitment Limited
        London
        Unspecified
        Internal Pentester Start: ASAP |Duration: 6 months |Location: London (Hybrid, 23 days in office) |Rate: Market About the Role Our client, a leading global organization, is looking for a skilledInternal Pentesterto join a leading security team in London. This contract role is perfect for someone experienced in penetration testing across networks, systems, web applications, APIs, and cloud environments, who can identify vulnerabilities, simulate attacks, and deliver actionable remediation advice. Youll work in a compliance-driven, high-security environment, collaborating with cross-functional teams to strengthen the organizations security posture. What Youll Do Conduct full-scope penetration tests on applications, APIs, internal infrastructure, networks, and cloud environments (AWS, Azure, GCP).
        Internal Pentester Start: ASAP |Duration: 6 months |Location: London (Hybrid, 23 days in office) |Rate: Market About the Role Our client, a leading global organization, is looking for a skilledInternal Pentesterto join a leading security team in London. This contract role is perfect for someone experienced in penetration testing across networks, systems, web applications, APIs, and cloud environments, who can identify vulnerabilities, simulate attacks, and deliver actionable remediation advice. Youll work in a compliance-driven, high-security environment, collaborating with cross-functional teams to strengthen the organizations security posture. What Youll Do Conduct full-scope penetration tests on applications, APIs, internal infrastructure, networks, and cloud environments (AWS, Azure, GCP).
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        Contract Length: ~6 Months Location: Hybrid with an expectation to spend approximately one day per week on-site in Stratford, London Day Rate: Up to £500 Start Date: End of September Interview Process: Initial interview followed by one or two client interviews This role requires a highly skilled, hands-on Lead Integration Engineer with significant experience in AWS, Python, and integration platforms. The successful candidate will provide both technical and thought leadership, driving integration initiatives in a complex and evolving environment. Key Responsibilities * Scope, design, and build integrations across third-party platforms leveraging AWS infrastructure * Develop and maintain scalable data pipelines using Python, ensuring data quality, consistency, and reliability
        Contract Length: ~6 Months Location: Hybrid with an expectation to spend approximately one day per week on-site in Stratford, London Day Rate: Up to £500 Start Date: End of September Interview Process: Initial interview followed by one or two client interviews This role requires a highly skilled, hands-on Lead Integration Engineer with significant experience in AWS, Python, and integration platforms. The successful candidate will provide both technical and thought leadership, driving integration initiatives in a complex and evolving environment. Key Responsibilities * Scope, design, and build integrations across third-party platforms leveraging AWS infrastructure * Develop and maintain scalable data pipelines using Python, ensuring data quality, consistency, and reliability
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        18 Month Fixed Term Contract Milton Keynes: £53,000 - £57,000 Hybrid Working Ready to shape the future of digital assessment through precision, collaboration, and innovation? AQA is looking for a Senior Test Analyst - Automation with proven experience in creating automated tests using BDD methodology. You'll translate specifications into meaningful automated tests using C# toolsets and libraries such as Playwright. You're someone who thrives on quality, champions best practices, and is eager to play a key role in delivering the systems behind millions of GCSE and A-level results across the UK and internationally. This is more than just writing test scripts - it's your opportunity to influence how we build, test, and deliver software that truly matters.
        18 Month Fixed Term Contract Milton Keynes: £53,000 - £57,000 Hybrid Working Ready to shape the future of digital assessment through precision, collaboration, and innovation? AQA is looking for a Senior Test Analyst - Automation with proven experience in creating automated tests using BDD methodology. You'll translate specifications into meaningful automated tests using C# toolsets and libraries such as Playwright. You're someone who thrives on quality, champions best practices, and is eager to play a key role in delivering the systems behind millions of GCSE and A-level results across the UK and internationally. This is more than just writing test scripts - it's your opportunity to influence how we build, test, and deliver software that truly matters.
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        Frequently Asked Questions

        How many contract API jobs are there in The City, City of London?
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