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        71 Contract API jobs in Hertfordshire + 20 miles

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        SAP Integration Lead

        JAM Recruitment Ltd
        GU16, Camberley
        Up to £678 per day
        Mainly remote (Frimley based) £678 per day Umbrella Inside IR35 12 Month Contract This is a great opportunity to work within one of the UK's leading Defence organisations based In Frimley but Mainly remote. * 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. * Document Processes: Maintain comprehensive documentation of integration processes, workflows, and system configurations.
        Mainly remote (Frimley based) £678 per day Umbrella Inside IR35 12 Month Contract This is a great opportunity to work within one of the UK's leading Defence organisations based In Frimley but Mainly remote. * 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. * Document Processes: Maintain comprehensive documentation of integration processes, workflows, and system configurations.
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        NEW

        Senior Full Stack Engineer

        XACT PLACEMENTS LIMITED
        London
        From £70,000 to £80,000 per annum
        Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator, recognised by Gartner and trusted by Fortune 500s and critical infrastructure providers worldwide. Theyre building cutting-edge technology that helps organisations continuously understand how they could be compromised and theyre scaling fast. Now, theyre looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where youll help shape the customer experience for some of the worlds largest enterprises. * Designing and developing enterprise-grade SaaS features across backend and frontend systems * Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) * Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI
        Want to use your full stack skills to help stop real-world cyber attacks? This is your chance to join a fast-growing, VC-backed cybersecurity innovator, recognised by Gartner and trusted by Fortune 500s and critical infrastructure providers worldwide. Theyre building cutting-edge technology that helps organisations continuously understand how they could be compromised and theyre scaling fast. Now, theyre looking for a Senior Full Stack Engineer to join their Client Facing Applications (CFA) team, where youll help shape the customer experience for some of the worlds largest enterprises. * Designing and developing enterprise-grade SaaS features across backend and frontend systems * Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) * Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI
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        NEW
        Senior Backend Engineer | High-Growth Cybersecurity Scale-Up | Fully Remote (Global) Are you ready to build the core systems that power one of the fastest-growing cybersecurity platforms on the planet? This is your chance to join a research-driven, venture-backed security scale-up thats trusted by some of the worlds biggest enterprises and critical infrastructure providers. Recognised by Gartner, armed with $29M+ in funding, and scaling aggressively worldwide, theyre on a mission to reshape how organisations stay ahead of real-world cyber threats. As a Senior Backend Engineer, youll play a key role in building scalable, high-performance backend systems that ingest, process, and serve data on millions of assetshelping global security teams uncover exposures before attackers do.
        Senior Backend Engineer | High-Growth Cybersecurity Scale-Up | Fully Remote (Global) Are you ready to build the core systems that power one of the fastest-growing cybersecurity platforms on the planet? This is your chance to join a research-driven, venture-backed security scale-up thats trusted by some of the worlds biggest enterprises and critical infrastructure providers. Recognised by Gartner, armed with $29M+ in funding, and scaling aggressively worldwide, theyre on a mission to reshape how organisations stay ahead of real-world cyber threats. As a Senior Backend Engineer, youll play a key role in building scalable, high-performance backend systems that ingest, process, and serve data on millions of assetshelping global security teams uncover exposures before attackers do.
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        NEW

        Senior Technical Business Analyst

        Hays
        London
        £650.0 - £800.0 per annum + £700 - £750/day inside via Umbrella
        Your new company We are currently partnered exclusively with a financial services institution to appoint a Senior Technical Business Analyst to an initial 6-month contract. Working in the Listed Derivatives area of the business, if you're an experienced technical BA with a strong understanding of US Treasury and interest rate futures/futures as a whole, then we want to hear from you. Contract Length: 6-months + potential extension Start Date: ASAP Rate: £700 - £750/day inside via Umbrella Working Arrangements: Hybrid Your new role and what you'll need to succeed Working closely with IT, development, and the operations test team, your role as the Senior Technical BA will act as the bridge between IT and the business, translating business needs into technical requirements and ensuring aligned communication across complex technical projects.
        Your new company We are currently partnered exclusively with a financial services institution to appoint a Senior Technical Business Analyst to an initial 6-month contract. Working in the Listed Derivatives area of the business, if you're an experienced technical BA with a strong understanding of US Treasury and interest rate futures/futures as a whole, then we want to hear from you. Contract Length: 6-months + potential extension Start Date: ASAP Rate: £700 - £750/day inside via Umbrella Working Arrangements: Hybrid Your new role and what you'll need to succeed Working closely with IT, development, and the operations test team, your role as the Senior Technical BA will act as the bridge between IT and the business, translating business needs into technical requirements and ensuring aligned communication across complex technical projects.
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        NEW
        Job title: Digital Developer Location: London, UK Job type: Contract (Inside IR35) About the Role You will be responsible for building and customizing digital experiences. This role is ideal for developers who are enthusiastic about modern web technologies, insurance transformation, and agile delivery. What will you do? * Develop and customize digital insurance applications using Guidewire JDP, React.js, and Figma-integrated design systems. In some cases, development may be custom built, using common front-end frameworks like React.js, Angular, or Vue.js. * Build and maintain reusable components and micro frontends for Guidewires CustomerEngage and EnterpriseEngage portals, as well as other custom or third-party digital platforms. * Integrate digital frontends with Guidewire PolicyCenter, BillingCenter, and ClaimCenter via Cloud APIs and GW Integration Gateway.
        Job title: Digital Developer Location: London, UK Job type: Contract (Inside IR35) About the Role You will be responsible for building and customizing digital experiences. This role is ideal for developers who are enthusiastic about modern web technologies, insurance transformation, and agile delivery. What will you do? * Develop and customize digital insurance applications using Guidewire JDP, React.js, and Figma-integrated design systems. In some cases, development may be custom built, using common front-end frameworks like React.js, Angular, or Vue.js. * Build and maintain reusable components and micro frontends for Guidewires CustomerEngage and EnterpriseEngage portals, as well as other custom or third-party digital platforms. * Integrate digital frontends with Guidewire PolicyCenter, BillingCenter, and ClaimCenter via Cloud APIs and GW Integration Gateway.
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        NEW
        Job title: Lead Integration Developer Location: London, UK Job type: Contract (Inside IR35) About the Role As a Lead Integration Developer, you will be responsible for designing, developing, and maintaining integration solutions across various platforms, including Guidewire InsuranceSuite and other core systems. You will lead a team of developers, collaborate with stakeholders, and ensure the delivery of integration projects that meet business and technical requirements. What will you do? * Lead the design and implementation of integration solutions using APIs, web services, and messaging systems. * Collaborate with business analysts and architects to define integration requirements and strategies. * Develop and maintain integration components using technologies such as Java, REST/JSON, XML, and Enterprise Messaging Systems.
        Job title: Lead Integration Developer Location: London, UK Job type: Contract (Inside IR35) About the Role As a Lead Integration Developer, you will be responsible for designing, developing, and maintaining integration solutions across various platforms, including Guidewire InsuranceSuite and other core systems. You will lead a team of developers, collaborate with stakeholders, and ensure the delivery of integration projects that meet business and technical requirements. What will you do? * Lead the design and implementation of integration solutions using APIs, web services, and messaging systems. * Collaborate with business analysts and architects to define integration requirements and strategies. * Develop and maintain integration components using technologies such as Java, REST/JSON, XML, and Enterprise Messaging Systems.
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        NEW
        Senior Frontend Engineer (Next.js / React) High-Growth SaaS | Build Elegant, User-First Products In partnership with Robert Half Limited. We're a high-growth SaaS company scaling fast, and we're looking for a Senior Frontend Engineer to join our team. This is a chance to shape products used by thousands of customers, working with modern tools and a team that values craftsmanship, speed, and impact. Hybrid Working in the City of London, London. 3 days in the office and 2 days from home. What You'll Do * Build and scale complex, high-performing web applications with Next.js and React * Collaborate with design and product to create polished, intuitive, responsive interfaces * Drive improvements in performance, accessibility, and scalability across platforms * Contribute to architecture decisions, code reviews, and design discussions
        Senior Frontend Engineer (Next.js / React) High-Growth SaaS | Build Elegant, User-First Products In partnership with Robert Half Limited. We're a high-growth SaaS company scaling fast, and we're looking for a Senior Frontend Engineer to join our team. This is a chance to shape products used by thousands of customers, working with modern tools and a team that values craftsmanship, speed, and impact. Hybrid Working in the City of London, London. 3 days in the office and 2 days from home. What You'll Do * Build and scale complex, high-performing web applications with Next.js and React * Collaborate with design and product to create polished, intuitive, responsive interfaces * Drive improvements in performance, accessibility, and scalability across platforms * Contribute to architecture decisions, code reviews, and design discussions
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        Job Title:Exchange Solution Architect | 6-Month Contract | London Location:London (Hybrid/On-site) Duration:6-Month Contract (with a strong view to extend) Clearance:Must be eligible for UK Security Clearance (SC). Job Type:Contract Are you a seasoned Exchange Solution Architect with deep expertise in the Microsoft 365 compliance ecosystem? We are seeking a talented architect to join a high-profile project in London. You will play a pivotal role in designing and governing robust messaging and compliance strategies for a critical enterprise environment. As our Exchange Solution Architect, you will be the technical authority on all things Microsoft Exchange Online, on-premises, and the broader M365 compliance suite.
        Job Title:Exchange Solution Architect | 6-Month Contract | London Location:London (Hybrid/On-site) Duration:6-Month Contract (with a strong view to extend) Clearance:Must be eligible for UK Security Clearance (SC). Job Type:Contract Are you a seasoned Exchange Solution Architect with deep expertise in the Microsoft 365 compliance ecosystem? We are seeking a talented architect to join a high-profile project in London. You will play a pivotal role in designing and governing robust messaging and compliance strategies for a critical enterprise environment. As our Exchange Solution Architect, you will be the technical authority on all things Microsoft Exchange Online, on-premises, and the broader M365 compliance suite.
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        NEW
        Position: AI Engineer / AI Agent / Backend AI Engineer Location: Remote Work Type: Contract We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
        Position: AI Engineer / AI Agent / Backend AI Engineer Location: Remote Work Type: Contract We're looking for an AI Engineer to design and deliver scalable AI/ML systems and agentic applications. You'll work on LLMs, RAG pipelines, model deployment, and cloud-native solutions that drive real-world impact. * Strong coding skills in Java / TypeScript /Python * Experience with LLMs, NLP, and ML frameworks (Hugging Face, PyTorch, TensorFlow, LangChain) * Cloud & DevOps expertise (AWS/Azure, Docker, Kubernetes, CI/CD pipelines) * Knowledge of microservices, APIs, distributed systems Why join us? * Work on cutting-edge AI innovation * Collaborative, cross-functional environment * Competitive salary + growth opportunities We encourage you to apply or send me your updated resume to nandiraju . b @ randstad . co. uk
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        NEWFEATURED

        SAP Integration Lead

        Outsource UK lTD
        GU16, Camberley, gu16 7ex
        £500.00 paye per day / £675.00 Umbrella inside IR35
        SAP Consultant Based: Frimley Hourly Rate: £500.00 paye per day / £675.00 Umbrella inside IR35 Hours: 37 Hours per week Onsite: 1- 2 days per week (some uk travel) Length: 12 months BAE Systems is looking for a talented SAP Integration Lead (Systems Integration Engineer) to join their growing team. In this role, you’ll play a key part in designing and delivering seamless system integrations across their enterprise platforms, particularly SAP ERP. You’ll work closely with cross-functional teams to ensure systems work together efficiently and reliably. The Job * Design and develop robust integration solutions for systems including SAP ERP * Collaborate with developers, architects, and project teams to define requirements * Implement and test integration solutions for performance and reliability * Monitor integrations, troubleshoot issues, and apply fixes
        SAP Consultant Based: Frimley Hourly Rate: £500.00 paye per day / £675.00 Umbrella inside IR35 Hours: 37 Hours per week Onsite: 1- 2 days per week (some uk travel) Length: 12 months BAE Systems is looking for a talented SAP Integration Lead (Systems Integration Engineer) to join their growing team. In this role, you’ll play a key part in designing and delivering seamless system integrations across their enterprise platforms, particularly SAP ERP. You’ll work closely with cross-functional teams to ensure systems work together efficiently and reliably. The Job * Design and develop robust integration solutions for systems including SAP ERP * Collaborate with developers, architects, and project teams to define requirements * Implement and test integration solutions for performance and reliability * Monitor integrations, troubleshoot issues, and apply fixes
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        NEWFEATURED
        About the Role. Application and Data integrations are the beating heart at the centre of all the client's applications - allowing the sharing of data between systems & interoperability of their platforms. This Integrations Analyst Developer will be working within their solution development team, working with the team to design, test and build new integrations and maintain existing integrations on their Boomi platform using a variety of integration techniques. This is a hybrid role, currently with 2 day per week onsite at their building in East London. About You. * You will need strong technical expertise in data integration using the Boomi platform within a large scale organisation, analytical and problem solving skills, the ability to collaborate effectively with cross-functional teams, and stakeholder management.
        About the Role. Application and Data integrations are the beating heart at the centre of all the client's applications - allowing the sharing of data between systems & interoperability of their platforms. This Integrations Analyst Developer will be working within their solution development team, working with the team to design, test and build new integrations and maintain existing integrations on their Boomi platform using a variety of integration techniques. This is a hybrid role, currently with 2 day per week onsite at their building in East London. About You. * You will need strong technical expertise in data integration using the Boomi platform within a large scale organisation, analytical and problem solving skills, the ability to collaborate effectively with cross-functional teams, and stakeholder management.
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        Software Developer (Java / Kotlin / React.js) Hybrid London or Munich £70,000 - £90,000 p/a + Benefits An innovative digital insurance platform is looking for a talented Full Stack Software Developer to join its growing international team. The business is transforming the way consumers engage with insurance, creating simple, transparent, and personalised experiences, and now expanding into new products and markets. As part of a small, highly skilled cross-functional team of engineers, designers, and domain experts, youll have direct input into platform architecture and strategy, working on impactful projects from day one. This is an exciting opportunity to shape a fast-scaling platform while working with modern tools and practices. Key Responsibilities * Lead development of core platform services and REST APIs in Kotlin.
        Software Developer (Java / Kotlin / React.js) Hybrid London or Munich £70,000 - £90,000 p/a + Benefits An innovative digital insurance platform is looking for a talented Full Stack Software Developer to join its growing international team. The business is transforming the way consumers engage with insurance, creating simple, transparent, and personalised experiences, and now expanding into new products and markets. As part of a small, highly skilled cross-functional team of engineers, designers, and domain experts, youll have direct input into platform architecture and strategy, working on impactful projects from day one. This is an exciting opportunity to shape a fast-scaling platform while working with modern tools and practices. Key Responsibilities * Lead development of core platform services and REST APIs in Kotlin.
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        Role Full Stack Developer Location - London (Remote) Salary - £70K - £85K Role Type Permanent Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Overview Are you a talented Full Stack Developer eager to make an immediate impact on exciting projects? Our client is seeking an experienced Full Stack development professional for a hybrid position to be based in Central London, but operating remotely * Design and implement robust web applications using cutting-edge technologies and frameworks. * Collaborate with cross-functional teams to drive the full development lifecycle, from concept to deployment. * Engage in continuous learning and professional development, enhancing your skills and career prospects.
        Role Full Stack Developer Location - London (Remote) Salary - £70K - £85K Role Type Permanent Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Overview Are you a talented Full Stack Developer eager to make an immediate impact on exciting projects? Our client is seeking an experienced Full Stack development professional for a hybrid position to be based in Central London, but operating remotely * Design and implement robust web applications using cutting-edge technologies and frameworks. * Collaborate with cross-functional teams to drive the full development lifecycle, from concept to deployment. * Engage in continuous learning and professional development, enhancing your skills and career prospects.
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        Salesforce Architect

        Stott & May Professional Search Limited
        NN1, Northampton
        £400 - £425 per day
        Role Title: Salesforce Architect Location: Northampton (Hybrid) Contract Duration: Until 31/12/2025 Day Rate: £425 (Inside IR35) We are seeking an experienced Salesforce Architect to lead the design and delivery of complex Salesforce solutions. The successful candidate will be responsible for defining and implementing scalable, secure, and innovative architectures that align with business objectives, while providing technical leadership across multiple Salesforce clouds. Key Responsibilities Develop and maintain the Salesforce architecture roadmap, covering data models, integrations, and customizations. Design and deliver scalable, secure solutions across Sales, Service, Marketing, and Experience Cloud. Create and review technical design documents, architecture diagrams, and data flows.
        Role Title: Salesforce Architect Location: Northampton (Hybrid) Contract Duration: Until 31/12/2025 Day Rate: £425 (Inside IR35) We are seeking an experienced Salesforce Architect to lead the design and delivery of complex Salesforce solutions. The successful candidate will be responsible for defining and implementing scalable, secure, and innovative architectures that align with business objectives, while providing technical leadership across multiple Salesforce clouds. Key Responsibilities Develop and maintain the Salesforce architecture roadmap, covering data models, integrations, and customizations. Design and deliver scalable, secure solutions across Sales, Service, Marketing, and Experience Cloud. Create and review technical design documents, architecture diagrams, and data flows.
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        NEW
        Role: QA Engineer Location: London Type: Hybrid / Remote Salary: TBC Contract Type: Permanent Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Our Recruitment Partners all have extensive industry experience, and work with a select group of niche clients, to deliver the best possible experience to the candidate. We are working with a fast-growing, product-led tech company and we are looking for a QA Engineer whos passionate about catching bugs, improving processes and making sure every release is rock solid. * Design and execute manual and automated test plans across web and mobile platforms * Collaborate with developers, designers, and PMs to ensure quality from ideation to release
        Role: QA Engineer Location: London Type: Hybrid / Remote Salary: TBC Contract Type: Permanent Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Our Recruitment Partners all have extensive industry experience, and work with a select group of niche clients, to deliver the best possible experience to the candidate. We are working with a fast-growing, product-led tech company and we are looking for a QA Engineer whos passionate about catching bugs, improving processes and making sure every release is rock solid. * Design and execute manual and automated test plans across web and mobile platforms * Collaborate with developers, designers, and PMs to ensure quality from ideation to release
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        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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        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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        PREMIUM
        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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        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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        Halian Technology is looking for a seasoned contractor for a client that has a desire to integrate all of their APIs to move their business technology on to the next step. We are looking for an integration engineer who can help shape the future of the systems by working with providers and making sure APIs plug up to each other. This will be a 6 month contact and Inside IR35 You will have experience in the following. -Strong documentation and communication - Ability to work with business stakeholders (e.g., Marketing, Ops) - Project management or agile familiarity - Problem-solving and debugging - Security awareness (especially around data flows and API access) - Testing and Quality Assurance Tech RESTful API design and integration Power Automate (workflow automation) Power Apps (low-code app development) SQL (data querying and transformation API authentication methods
        Halian Technology is looking for a seasoned contractor for a client that has a desire to integrate all of their APIs to move their business technology on to the next step. We are looking for an integration engineer who can help shape the future of the systems by working with providers and making sure APIs plug up to each other. This will be a 6 month contact and Inside IR35 You will have experience in the following. -Strong documentation and communication - Ability to work with business stakeholders (e.g., Marketing, Ops) - Project management or agile familiarity - Problem-solving and debugging - Security awareness (especially around data flows and API access) - Testing and Quality Assurance Tech RESTful API design and integration Power Automate (workflow automation) Power Apps (low-code app development) SQL (data querying and transformation API authentication methods
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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
        This is a fantastic opportunity to work as a contract Automation Tester for an ecommerce company, on a long term contract, remotely, inside IR35. * .Net/C# * WinDriver * Specflow * API * Azure If you do have the relevant experience for this Automation Tester position, please do apply.
        This is a fantastic opportunity to work as a contract Automation Tester for an ecommerce company, on a long term contract, remotely, inside IR35. * .Net/C# * WinDriver * Specflow * API * Azure If you do have the relevant experience for this Automation Tester position, please do apply.
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        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

        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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        What is the average salary for API in Hertfordshire?

        Average salary per year
        £62,499

        The average salary for a API in Hertfordshire is £62,499. API in Hertfordshire salaries range from £47,499 to £67,499.

        Frequently Asked Questions

        How many contract API jobs are there in Hertfordshire?
        There are 71 contract API jobs within 20 miles of Hertfordshire available on Jobsite right now.

        What other similar jobs are there to contract API jobs in Hertfordshire?
        As well as contract API jobs in Hertfordshire, you can find contract .NET Developer, IT, Software Development, amongst many others.