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27 Contract API jobs in Meadow Green, Welwyn Garden City + 20 miles
420 exact matches jobs are outside your preferred location
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We are seeking a Security Architect to bridge the gap between governance, engineering, and business strategy. This role will focus on embedding security as code into enterprise ways of working, ensuring frameworks are practical, scalable, and enable rather than block delivery. You will help shape security policies and standards, then implement them directly in code to support developer adoption. Engineering & Delivery * Convert technology and governance standards into policies as code. * Integrate policies and controls via APIs. * Design and build scalable automation using AWS, Python, Terraform, and CI/CD tooling. * Drive adoption of security and governance through practical, developer-friendly solutions. Business Strategy & Governance * Translate governance objectives into actionable outcomes. * Define frameworks that align with enterprise priorities.
We are seeking a Security Architect to bridge the gap between governance, engineering, and business strategy. This role will focus on embedding security as code into enterprise ways of working, ensuring frameworks are practical, scalable, and enable rather than block delivery. You will help shape security policies and standards, then implement them directly in code to support developer adoption. Engineering & Delivery * Convert technology and governance standards into policies as code. * Integrate policies and controls via APIs. * Design and build scalable automation using AWS, Python, Terraform, and CI/CD tooling. * Drive adoption of security and governance through practical, developer-friendly solutions. Business Strategy & Governance * Translate governance objectives into actionable outcomes. * Define frameworks that align with enterprise priorities.
Android Developer, 6 months, London, £500-550, Start ASAP - Location: London (Hybrid) Sector: Financial Services - Inside IR35 - Are you an experienced Android Developer ready to join a major Engineering Transformation programme at one of the UK's leading banks? My client is looking for a skilled contractor with strong Kotlin / Java expertise to help shape and deliver cutting-edge Android applications in a fast-paced, collaborative environment. * Building and maintaining advanced Android apps using Kotlin, Java, and frameworks like RxJava * Designing with architecture patterns like MVP, MVVM, or MVI * Handling the full app lifecycle - from modules through to Play Store deployment * Optimising mobile experiences across a range of screen sizes and Android versions * Collaborating with cross-functional teams to define and deliver new features * Integrating APIs and exter
Android Developer, 6 months, London, £500-550, Start ASAP - Location: London (Hybrid) Sector: Financial Services - Inside IR35 - Are you an experienced Android Developer ready to join a major Engineering Transformation programme at one of the UK's leading banks? My client is looking for a skilled contractor with strong Kotlin / Java expertise to help shape and deliver cutting-edge Android applications in a fast-paced, collaborative environment. * Building and maintaining advanced Android apps using Kotlin, Java, and frameworks like RxJava * Designing with architecture patterns like MVP, MVVM, or MVI * Handling the full app lifecycle - from modules through to Play Store deployment * Optimising mobile experiences across a range of screen sizes and Android versions * Collaborating with cross-functional teams to define and deliver new features * Integrating APIs and exter
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Job Title: Salesforce Architect - Location: Northampton (Hybrid - 2-3 days on-site per week) Contract Duration: Until 31st December 2026 - Day Rate: £382.50 (Inside IR35) About the Role - We are looking for an experienced Salesforce Architect to lead the design and delivery of complex Salesforce solutions. In this pivotal role, you will shape the organisation's Salesforce platform strategy, ensuring alignment with business objectives while driving innovation and scalability. You will be responsible for creating robust, secure, and future-proof solutions across multiple Salesforce clouds, collaborating with business and technical teams, and providing leadership in governance, integration, and architectural best practices. Key Responsibilities - Solution Architecture & Design - Develop and maintain a Salesforce architecture roadmap, covering data models, integrations, a
Job Title: Salesforce Architect - Location: Northampton (Hybrid - 2-3 days on-site per week) Contract Duration: Until 31st December 2026 - Day Rate: £382.50 (Inside IR35) About the Role - We are looking for an experienced Salesforce Architect to lead the design and delivery of complex Salesforce solutions. In this pivotal role, you will shape the organisation's Salesforce platform strategy, ensuring alignment with business objectives while driving innovation and scalability. You will be responsible for creating robust, secure, and future-proof solutions across multiple Salesforce clouds, collaborating with business and technical teams, and providing leadership in governance, integration, and architectural best practices. Key Responsibilities - Solution Architecture & Design - Develop and maintain a Salesforce architecture roadmap, covering data models, integrations, a
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Full Stack Developer - Hybrid (London & Bristol) - Circa £600 per day inside ir35 - 3 months - All applicants must hold an active SC clearance. * Develop and maintain web applications: Design, code, test, and deploy scalable and efficient web applications using modern technologies. * Collaborate with cross-functional teams: Work closely with designers, product managers, and other developers to create seamless user experiences. * Implement front-end solutions: Create responsive and interactive user interfaces using HTML, CSS, JavaScript, and front-end frameworks such as React, Angular, or Vue.js and TypeScript Develop back-end services * Build and maintain server-side logic, databases, and APIs using Spring and Java * Experience of Cloud Native microservices architectures deployed on Kubernetes hosted on Red Hat OpenShift * Experience of CI/CD pipelines using GitHub an
Full Stack Developer - Hybrid (London & Bristol) - Circa £600 per day inside ir35 - 3 months - All applicants must hold an active SC clearance. * Develop and maintain web applications: Design, code, test, and deploy scalable and efficient web applications using modern technologies. * Collaborate with cross-functional teams: Work closely with designers, product managers, and other developers to create seamless user experiences. * Implement front-end solutions: Create responsive and interactive user interfaces using HTML, CSS, JavaScript, and front-end frameworks such as React, Angular, or Vue.js and TypeScript Develop back-end services * Build and maintain server-side logic, databases, and APIs using Spring and Java * Experience of Cloud Native microservices architectures deployed on Kubernetes hosted on Red Hat OpenShift * Experience of CI/CD pipelines using GitHub an
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Job Title: Full Stack Developer - Location: Hybrid with travel to London and Bristol - Duration: 6 Months - Rate: £650 per day - PAYE via Umbrella only - Clearance: Active MOD SC clearance is necessary for this role. Job Description * Develop and maintain web applications: Design, code, test, and deploy scalable and efficient web applications using modern technologies. * Collaborate with cross-functional teams: Work closely with designers, product managers, and other developers to create seamless user experiences. * Implement front-end solutions: Create responsive and interactive user interfaces using HTML, CSS, JavaScript, and front-end frameworks such as React, Angular, or Vue.js and TypeScript * Develop back-end services: Build and maintain server-side logic, databases, and APIs using Spring and Java * Experience of Cloud Native microservices architectures deployed
Job Title: Full Stack Developer - Location: Hybrid with travel to London and Bristol - Duration: 6 Months - Rate: £650 per day - PAYE via Umbrella only - Clearance: Active MOD SC clearance is necessary for this role. Job Description * Develop and maintain web applications: Design, code, test, and deploy scalable and efficient web applications using modern technologies. * Collaborate with cross-functional teams: Work closely with designers, product managers, and other developers to create seamless user experiences. * Implement front-end solutions: Create responsive and interactive user interfaces using HTML, CSS, JavaScript, and front-end frameworks such as React, Angular, or Vue.js and TypeScript * Develop back-end services: Build and maintain server-side logic, databases, and APIs using Spring and Java * Experience of Cloud Native microservices architectures deployed
PREMIUM
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Marketing Manager Technology
Marketing Manager Technology
Staffworx Limited
Chiswick, W4
market rates, outside IR35, 1-2 days week on site
MarTech Marketing Technology Consultant - contract, outside IR35 - NOTE: This is a mid-level consultant role, looking for someone with 4-5 years relevant experience, this is not a head/lead or programme mgt position, hands on MarTech advisory consultant role. Working for upcoming business technology consulting firm with Enterprise client in the Telco and Digital Commerce sectors. You will work with the client to bridge the gap between marketing and technology, supporting the client in assessing, implementing, and optimizing marketing technology solutions to enhance our clients' marketing strategies and operations. This role requires a deep understanding of marketing technology landscapes, strong analytical skills, and the ability to collaborate with cross-functional teams. About the Role - Required skills and experience: 4-5 years in Digital Marketing Technology: as a
MarTech Marketing Technology Consultant - contract, outside IR35 - NOTE: This is a mid-level consultant role, looking for someone with 4-5 years relevant experience, this is not a head/lead or programme mgt position, hands on MarTech advisory consultant role. Working for upcoming business technology consulting firm with Enterprise client in the Telco and Digital Commerce sectors. You will work with the client to bridge the gap between marketing and technology, supporting the client in assessing, implementing, and optimizing marketing technology solutions to enhance our clients' marketing strategies and operations. This role requires a deep understanding of marketing technology landscapes, strong analytical skills, and the ability to collaborate with cross-functional teams. About the Role - Required skills and experience: 4-5 years in Digital Marketing Technology: as a
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Mid-Level C++ Developer (5+ years of experience) Location:Hybrid - 2-3 days onsite in Hounslow - Rate:£430 per day (Inside IR35) Duration:12 months (Extension highly likely) Are you an experienced C++ Developer looking for your next long-term contract? We are seeking a technically strong and versatileMid-Level C++ Developerto join our client's high-performing team on a travel technology project. Key Responsibilities * Develop and maintain high-performance Back End components using C++11 or newer. * Design dynamic, responsive Front End interfaces with AngularJS/Angular 2+. * Support and enhance existing systems with a focus on performance, stability, and maintainability. * Collaborate with cross-functional teams (Product Owners, QA, DevOps, etc.) to deliver new features. * Refactor Legacy code and actively contribute to reducing technical debt.
Mid-Level C++ Developer (5+ years of experience) Location:Hybrid - 2-3 days onsite in Hounslow - Rate:£430 per day (Inside IR35) Duration:12 months (Extension highly likely) Are you an experienced C++ Developer looking for your next long-term contract? We are seeking a technically strong and versatileMid-Level C++ Developerto join our client's high-performing team on a travel technology project. Key Responsibilities * Develop and maintain high-performance Back End components using C++11 or newer. * Design dynamic, responsive Front End interfaces with AngularJS/Angular 2+. * Support and enhance existing systems with a focus on performance, stability, and maintainability. * Collaborate with cross-functional teams (Product Owners, QA, DevOps, etc.) to deliver new features. * Refactor Legacy code and actively contribute to reducing technical debt.
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Mobile Developer (iOS / Android) Smart Home / IoT Apps - Location: UK/EMEA (Fully Remote) Rate: £300 £400 per day - We are seeking a talented and creative Mobile Developer (iOS / Android) to join our clients fast-growing digital and smart home technology team. You will be working on the design, development, and optimisation of innovative mobile applications that power the next generation of home automation and IoT devices, used by thousands of customers daily. This is a fantastic opportunity to make an impact on high-profile projects, working within a collaborative, forward-thinking environment that blends mobile, IoT, cloud, and real-time communication technologies. Key Responsibilities * Develop, test, and deploy high-quality iOS and Android applications (native or cross-platform). * Collaborate with product managers, designers, and backend engineers to define and d
Mobile Developer (iOS / Android) Smart Home / IoT Apps - Location: UK/EMEA (Fully Remote) Rate: £300 £400 per day - We are seeking a talented and creative Mobile Developer (iOS / Android) to join our clients fast-growing digital and smart home technology team. You will be working on the design, development, and optimisation of innovative mobile applications that power the next generation of home automation and IoT devices, used by thousands of customers daily. This is a fantastic opportunity to make an impact on high-profile projects, working within a collaborative, forward-thinking environment that blends mobile, IoT, cloud, and real-time communication technologies. Key Responsibilities * Develop, test, and deploy high-quality iOS and Android applications (native or cross-platform). * Collaborate with product managers, designers, and backend engineers to define and d
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NEW CONTRACT iOS DEVELOPER ROLE AVAILABLE - REMOTE (UK/EU-BASED) * Outside IR35 * 9-12 Month Initial Contract | Start ASAP | Likely Extension - A new contract opportunity for a skilled iOS Developer to build and deploy AI-powered fintech mobile apps. You will work on secure, high-quality solutions while integrating machine learning features such as NLP and recommendation systems. * Develop and deploy iOS apps (Swift / Objective-C, iOS SDK, App Store). * Integrate RESTful APIs and backend services into iOS applications. * Embed AI/ML features (NLP, recommendation engines) into mobile workflows. * Deliver compliant and secure fintech solutions (GDPR, OAuth, encryption). * Experience managing projects end-to-end (greenfield exp.) * Strong expertise in iOS development (Swift / Objective-C, iOS SDK, App Store deployment)
NEW CONTRACT iOS DEVELOPER ROLE AVAILABLE - REMOTE (UK/EU-BASED) * Outside IR35 * 9-12 Month Initial Contract | Start ASAP | Likely Extension - A new contract opportunity for a skilled iOS Developer to build and deploy AI-powered fintech mobile apps. You will work on secure, high-quality solutions while integrating machine learning features such as NLP and recommendation systems. * Develop and deploy iOS apps (Swift / Objective-C, iOS SDK, App Store). * Integrate RESTful APIs and backend services into iOS applications. * Embed AI/ML features (NLP, recommendation engines) into mobile workflows. * Deliver compliant and secure fintech solutions (GDPR, OAuth, encryption). * Experience managing projects end-to-end (greenfield exp.) * Strong expertise in iOS development (Swift / Objective-C, iOS SDK, App Store deployment)
FEATURED
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Job Description Workday Integration Consultant - Key Responsibilities - Design, develop, and maintain Workday integrations including Core Connectors, EIBs, Studio, and custom solutions. Leverage Workday HCM core knowledge to deliver effective integration solutions. Perform XML/XSLT transformations and handle various file formats (CSV, XML, JSON, etc.). Work with APIs, Web Services (SOAP/REST), and file transfer protocols (SFTP/FTP). Ensure accuracy, compliance, and performance of integrations across HR, Payroll, Benefits, and Finance systems. Collaborate with business stakeholders to translate requirements and process logic into actionable code and functional solutions. Troubleshoot, optimize, and support integrations in production environments. Plan, prioritize, and deliver assigned work within agreed timelines. Required Skills & Qualifications
Job Description Workday Integration Consultant - Key Responsibilities - Design, develop, and maintain Workday integrations including Core Connectors, EIBs, Studio, and custom solutions. Leverage Workday HCM core knowledge to deliver effective integration solutions. Perform XML/XSLT transformations and handle various file formats (CSV, XML, JSON, etc.). Work with APIs, Web Services (SOAP/REST), and file transfer protocols (SFTP/FTP). Ensure accuracy, compliance, and performance of integrations across HR, Payroll, Benefits, and Finance systems. Collaborate with business stakeholders to translate requirements and process logic into actionable code and functional solutions. Troubleshoot, optimize, and support integrations in production environments. Plan, prioritize, and deliver assigned work within agreed timelines. Required Skills & Qualifications
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PowerBI Specialist (Contract) | £350-£450 p/day (Outside IR35) | 3 Months (strong possibility of extension) | ASAP - We're hiring on behalf of a fast-growing SaaS company that's looking for an experienced Power BI Specialist to take ownership of their reporting environment. This is a fully remote contract role, starting immediately. The client has a strong BI foundation in place, but they're now looking for someone who can streamline reporting, reduce maintenance, and optimise their use of Power BI at scale. Right now, customer-specific reports are managed individually (e.g. 45+ reports needing updates when a change is made). They want to consolidate, automate, and improve efficiency across their reporting suite. This is not a 'start from scratch' build - instead, you'll be reviewing what's already in place, identifying improvements, and implementing changes to drive
PowerBI Specialist (Contract) | £350-£450 p/day (Outside IR35) | 3 Months (strong possibility of extension) | ASAP - We're hiring on behalf of a fast-growing SaaS company that's looking for an experienced Power BI Specialist to take ownership of their reporting environment. This is a fully remote contract role, starting immediately. The client has a strong BI foundation in place, but they're now looking for someone who can streamline reporting, reduce maintenance, and optimise their use of Power BI at scale. Right now, customer-specific reports are managed individually (e.g. 45+ reports needing updates when a change is made). They want to consolidate, automate, and improve efficiency across their reporting suite. This is not a 'start from scratch' build - instead, you'll be reviewing what's already in place, identifying improvements, and implementing changes to drive
FEATURED
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We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
We're looking for an experienced Engineering Manager to oversee the technical migration of a Product Information Management (PIM) system - namely STIBO STEP - from an on-premise setup to a SaaS solution. This role requires close collaboration with internal product and engineering teams, as well as with external partners. * 10+ years in software engineering and delivery, with at least 5 years in leadership, principal, or managerial roles. * Strong expertise in PIM/MDM platforms, with hands-on experience in STIBO STEP essential. * Proven track record migrating enterprise applications to SaaS, ideally within large-scale, complex environments. * Languages: Java 17+ (Java 21 preferred) * Frameworks: Micronaut (preferred), Spring Boot * Testing: JUnit, Mockito * Build Tools: Gradle * Data & Messaging: Kafka, MongoDB * APIs: GraphQL Federation, REST
Agile Project Manager, ideally with expereince of Salesforce Education Cloud, or similar SaaS platforms is required to support our London University client to deliver the implementation of Salesforce Education Cloud and associated systems. The Agile Project Manager will be tasked with leading the day-to-day management of Salesforce Education Cloud implementation, leading the Agile delivery of the Salesforce Education Cloud platform and associated initiatives (UX, AI tools, dashboards). Essential Experience * Experience of managing large-scale digital transformation or CRM/ERP implementations. * Strong understanding of delivery and integration of Salesforce (ideally Education Cloud) or similar SaaS platforms. * Experience working with multiple suppliers in a complex stakeholder environment. * Strong stakeholder management, particularly in Higher Education or similar pu
Agile Project Manager, ideally with expereince of Salesforce Education Cloud, or similar SaaS platforms is required to support our London University client to deliver the implementation of Salesforce Education Cloud and associated systems. The Agile Project Manager will be tasked with leading the day-to-day management of Salesforce Education Cloud implementation, leading the Agile delivery of the Salesforce Education Cloud platform and associated initiatives (UX, AI tools, dashboards). Essential Experience * Experience of managing large-scale digital transformation or CRM/ERP implementations. * Strong understanding of delivery and integration of Salesforce (ideally Education Cloud) or similar SaaS platforms. * Experience working with multiple suppliers in a complex stakeholder environment. * Strong stakeholder management, particularly in Higher Education or similar pu
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Experience with MuleSoft and API Gateways.
Experience with MuleSoft and API Gateways.
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SuiteCRM Developer - £420p/d Inside IR35 - Remote / UK Based
SuiteCRM Developer - £420p/d Inside IR35 - Remote / UK Based
Exalto Consulting ltd
London
£420p/d Inside IR35
Building and maintaining API integrations (REST/SOAP)
Building and maintaining API integrations (REST/SOAP)
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REST API development
REST API development
NEW
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API testing tools (e.g., Postman, REST Assured).
API testing tools (e.g., Postman, REST Assured).
NEW
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Integration - Expert experience with integration techniques, including real-time messaging (AMQ), API design (JSON, Swagger), and batch techniques.
Integration - Expert experience with integration techniques, including real-time messaging (AMQ), API design (JSON, Swagger), and batch techniques.
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Spring Boot, Spring Cloud, Angular, Javascript and Rest API
Spring Boot, Spring Cloud, Angular, Javascript and Rest API
NEW
We are looking for a Staff Software Engineer to join Datadog's API Platform group. This team owns the infrastructure and tooling behind our public API surface, which spans more than 7,000 endpoints and supports a vast range of customers and integrations. As a Staff Engineer, you will have the opportunity to contribute to a broad set of projects across multiple teams that support API routing, reliability, web frameworks, and large-scale automation. You will collaborate with teams that build and evolve internal frameworks, traffic shaping and routing logic, reliability tooling, and developer enablement for API infrastructure. * Lead technical direction across multiple teams spanning API routing, rate limiting, frameworks, reliability tooling, and infrastructure automation. * Help define
We are looking for a Staff Software Engineer to join Datadog's API Platform group. This team owns the infrastructure and tooling behind our public API surface, which spans more than 7,000 endpoints and supports a vast range of customers and integrations. As a Staff Engineer, you will have the opportunity to contribute to a broad set of projects across multiple teams that support API routing, reliability, web frameworks, and large-scale automation. You will collaborate with teams that build and evolve internal frameworks, traffic shaping and routing logic, reliability tooling, and developer enablement for API infrastructure. * Lead technical direction across multiple teams spanning API routing, rate limiting, frameworks, reliability tooling, and infrastructure automation. * Help define
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Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
Lead the design and development of automated UI and API testing solutions using SpecFlow and Playwright, written in C# .NET.
NEWFEATURED
Knowledge of API design and development best practices
Knowledge of API design and development best practices
Build with modern paradigms : Be comfortable delivering microservices architecture (API, GraphQL), and leverage AI to get things done
Build with modern paradigms : Be comfortable delivering microservices architecture (API, GraphQL), and leverage AI to get things done
Our ideal candidate is an experienced and resourceful engineer, comfortable building relationships with other established product teams to understand where we can use existing learnings to influence decisions and align on approaches, collaborating with frontend engineers to guide and agree API behaviours and expectations through documented contracts, and working closely with product stakeholders to agree on MVP requirements.
Our ideal candidate is an experienced and resourceful engineer, comfortable building relationships with other established product teams to understand where we can use existing learnings to influence decisions and align on approaches, collaborating with frontend engineers to guide and agree API behaviours and expectations through documented contracts, and working closely with product stakeholders to agree on MVP requirements.
At BNY, our culture allows us to run our company better and enables employees growth and success. As a leading global financial services company at the heart of the global financial system, we influence nearly 20% of the worlds investible assets. Every day, our teams harness cutting-edge AI and breakthrough technologies to collaborate with clients, driving transformative solutions that redefine industries and uplift communities worldwide. Recognized as a top destination for innovators and champions of inclusion, BNY is where bold ideas meet advanced technology and exceptional talent. Together, we power the future of finance and this is what #LifeAtBNY is all about. Join us and be part of something extraordinary. Were seeking a future team member for the role of Director of Technology, FX Execution Services to join our team. This role is located in London.
At BNY, our culture allows us to run our company better and enables employees growth and success. As a leading global financial services company at the heart of the global financial system, we influence nearly 20% of the worlds investible assets. Every day, our teams harness cutting-edge AI and breakthrough technologies to collaborate with clients, driving transformative solutions that redefine industries and uplift communities worldwide. Recognized as a top destination for innovators and champions of inclusion, BNY is where bold ideas meet advanced technology and exceptional talent. Together, we power the future of finance and this is what #LifeAtBNY is all about. Join us and be part of something extraordinary. Were seeking a future team member for the role of Director of Technology, FX Execution Services to join our team. This role is located in London.
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Locations
- Greenwich
- Southwark
- Chiswick
- Fivensgreen
- Frimley
- Haslemere Industrial Estate
- Holborn
- Mayfair
- Osterley
- City of London
- Oxford
- Reading
- Cambridge
- Central London
- South East London
- West End
- Basingstoke
- Milton Keynes
- Northampton
- London
- Berkshire
- Oxfordshire
- Surrey
- Hertfordshire
- Buckinghamshire
- Cambridgeshire
- Hampshire
- Northamptonshire
- Kent
- South East
- East Anglia
- East Midlands
- Midlands