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        13 Contract API jobs in Rackend + 20 miles

        671 exact matches jobs are outside your preferred location

        Software Engineering Manager - Unified Client Experience (UCX)

        Hargreaves Lansdown
        London
        £90000 - £115000 per annum + Generous bonus, pension, PMI and more
        Strong understanding of secure API integration, authentication flows, and modern UI/UX architecture.
        Strong understanding of secure API integration, authentication flows, and modern UI/UX architecture.
        NEWFEATURED
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        more
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
        more
        Maintain a strong understanding of offensive and defensive practices, with particular focus on web, API, bot, DDoS, and AI-related threats * Strong grasp of common web, cloud, and API protocols and their associated attack surfaces (e.g., HTTP/S, REST, OAuth, DNS, TLS, etc.)
        Maintain a strong understanding of offensive and defensive practices, with particular focus on web, API, bot, DDoS, and AI-related threats * Strong grasp of common web, cloud, and API protocols and their associated attack surfaces (e.g., HTTP/S, REST, OAuth, DNS, TLS, etc.)
        more
        Are you ready tochart your own career path? At SJP we need talented individuals like yourselfto support our evolving culture. If youre seeking an employer that ispassionate about excellence, innovation and autonomy, SJP could be the placefor you. Location: Cirencester Office - Workplace Type: Hybrid - Employment Type: Permanent - Seniority: Mid-Senior Level - The Senior Enterprise Architect for the Salesforce Platform oversees the design and development of Salesforce solutions delivered by a panel of delivery partners to the organisation. They ensure that Salesforce architecture is scalable, secure, and optimized for efficiency. This role requires deep technical expertise, strategic thinking, and collaboration with various stakeholders to deliver high-impact solutions. The role holder will ensure 3rd party alignment to SJPs architectural patterns, guardrails and princ
        Are you ready tochart your own career path? At SJP we need talented individuals like yourselfto support our evolving culture. If youre seeking an employer that ispassionate about excellence, innovation and autonomy, SJP could be the placefor you. Location: Cirencester Office - Workplace Type: Hybrid - Employment Type: Permanent - Seniority: Mid-Senior Level - The Senior Enterprise Architect for the Salesforce Platform oversees the design and development of Salesforce solutions delivered by a panel of delivery partners to the organisation. They ensure that Salesforce architecture is scalable, secure, and optimized for efficiency. This role requires deep technical expertise, strategic thinking, and collaboration with various stakeholders to deliver high-impact solutions. The role holder will ensure 3rd party alignment to SJPs architectural patterns, guardrails and princ
        more
        In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
        In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
        more
        Experience with AWS - AWS API, EC2, S3, RDS, Lambda, Route53, VPC, CloudFront, CloudWatch, IAM, ADFS, Elastic Cache, Microservices, Elastic Beanstalk
        Experience with AWS - AWS API, EC2, S3, RDS, Lambda, Route53, VPC, CloudFront, CloudWatch, IAM, ADFS, Elastic Cache, Microservices, Elastic Beanstalk
        more
        Support an API-FIRST Analytics business strategy to design and build SaaS and PaaS solutions, including analytics data solutions, quantitative models, risk analytics and customized reporting tools, and other sophisticated analytical tools. * Experience leading/designing/delivering API service-based product solutions
        Support an API-FIRST Analytics business strategy to design and build SaaS and PaaS solutions, including analytics data solutions, quantitative models, risk analytics and customized reporting tools, and other sophisticated analytical tools. * Experience leading/designing/delivering API service-based product solutions
        more
        LSEG is seeking a skilled Real-Time Cloud Architect to design, build, and maintain cloud-based solutions to facilitate low latency distribution of real-time content. The ideal candidate will have extensive experience with Azure and AWS cloud platforms and collaborating with multi-functional teams to architect scalable, secure and highly performant solutions. Designing and implementing real-time distribution solutions applying Azure and AWS cloud-native services. Migrating existing on-prem applications to Azure and AWS cloud. Remediating solutions to meet RPO (Recovery Point Objective) and RTO (Recovery Time Objective) targets. Participate in technical governance reviews and ensure alignment to standards. Conduct feasibility studies and recommend technology stacks. Developing and implementing strategies to enhance cloud financial management (FinOps).
        LSEG is seeking a skilled Real-Time Cloud Architect to design, build, and maintain cloud-based solutions to facilitate low latency distribution of real-time content. The ideal candidate will have extensive experience with Azure and AWS cloud platforms and collaborating with multi-functional teams to architect scalable, secure and highly performant solutions. Designing and implementing real-time distribution solutions applying Azure and AWS cloud-native services. Migrating existing on-prem applications to Azure and AWS cloud. Remediating solutions to meet RPO (Recovery Point Objective) and RTO (Recovery Time Objective) targets. Participate in technical governance reviews and ensure alignment to standards. Conduct feasibility studies and recommend technology stacks. Developing and implementing strategies to enhance cloud financial management (FinOps).
        more
        Senior Python Developer Team Lead - Location:Remote (UK-based) Salary:£55,000 £62,000 per annum - Were recruiting on behalf of our client who are in EdTech supporting schools across the UK. The business develops cloud-based solutions that help schools use technology and data to improve outcomes. They are looking for aSenior Python Developerwith Team Lead experience to join their engineering team. Youll lead development, set technical standards and support the delivery of scalable, cloud-native products. Main Duties of the Role * Lead the design and development of scalable Python applications * Provide technical leadership within an Agile environment * Design and maintain AWS-based systems using Infrastructure-as-Code * Set best practices across development, testing and deployment * Mentor developers and contribute to technical innovation - Your Skills and Experience
        Senior Python Developer Team Lead - Location:Remote (UK-based) Salary:£55,000 £62,000 per annum - Were recruiting on behalf of our client who are in EdTech supporting schools across the UK. The business develops cloud-based solutions that help schools use technology and data to improve outcomes. They are looking for aSenior Python Developerwith Team Lead experience to join their engineering team. Youll lead development, set technical standards and support the delivery of scalable, cloud-native products. Main Duties of the Role * Lead the design and development of scalable Python applications * Provide technical leadership within an Agile environment * Design and maintain AWS-based systems using Infrastructure-as-Code * Set best practices across development, testing and deployment * Mentor developers and contribute to technical innovation - Your Skills and Experience
        more

        Node.JS Developer (SC Cleared)

        Sanderson Government and Defence
        Corsham, Wiltshire, BBTE
        £500 - £550 per day + Inside IR35
        SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
        SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
        more
        FEATURED

        Node.JS Developer

        Sanderson Government and Defence
        Corsham, Wiltshire, BBTE
        £500 - £550 per day + Inside IR35
        SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
        SC Cleared Node.js Developer - Location: Fully Remote (UK-based only) Contract Type: Contract (Inside IR35) Day Rate: £500-£550/day - Clearance Required: Active SC Clearance - Duration: Until 31/03/2025 - Sector: Defence / Government - Role Overview - We are seeking a highly skilled and security-cleared Node.js Developer to join a long-term government programme within the UK defence sector. This role involves designing, developing, and maintaining secure back-end services and APIs using Node.js and modern cloud technologies. You'll work as part of a collaborative agile team delivering scalable solutions that support national security objectives. Key Responsibilities * Develop and maintain back-end services using Node.js and Express.js * Write clean, testable, and efficient code following best practices * Ensure systems are secure, scalable, and compliant with defence
        more
        FEATURED
        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
        more
        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.
        more
        FEATURED

        Senior Technical Specialist

        Zensar Technologies
        London
        From £61,750 to £65,000 per annum
        Qualification:Must be educated to at least degree level or equivalent. Zensar is a leading digital solutions and technology services company that specialises in partnering with global organisations across industries in their Digital Transformation journey. Zensars Return on Digital strategy has enabled customers to look beyond current investments towards realising visible business benefits in their digital transformation journey. If youre looking for a workplace where associates realise and contribute to their full potential, are recognised for the impact they make, and enjoy the company of the people they work with, then youve come to the right place! As the Senior Technical Specialist you would be accountable for the successful delivery and ongoing optimisation of Salesforce solutions across the organisation.
        Qualification:Must be educated to at least degree level or equivalent. Zensar is a leading digital solutions and technology services company that specialises in partnering with global organisations across industries in their Digital Transformation journey. Zensars Return on Digital strategy has enabled customers to look beyond current investments towards realising visible business benefits in their digital transformation journey. If youre looking for a workplace where associates realise and contribute to their full potential, are recognised for the impact they make, and enjoy the company of the people they work with, then youve come to the right place! As the Senior Technical Specialist you would be accountable for the successful delivery and ongoing optimisation of Salesforce solutions across the organisation.
        more
        NEW

        Senior Software Engineer - Unified Client Experience (UCX)

        Hargreaves Lansdown
        London
        £75000 - £95000 per annum + Generous bonus, pension, PMI & more
        About HL and the opportunity. We're building the next generation platform for one of the UK's largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets. This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will build our next generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and mobile domains. It's an opportunity to design, architect and build a modern frontend using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation, transforming client journeys and delivering on HL's vision to give people financial freedom.
        About HL and the opportunity. We're building the next generation platform for one of the UK's largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets. This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will build our next generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and mobile domains. It's an opportunity to design, architect and build a modern frontend using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation, transforming client journeys and delivering on HL's vision to give people financial freedom.
        more
        NEWFEATURED
        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution.
        About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution.
        more
        Description and requirements - Skanska, one of the worlds leading project development and construction groups, is an inclusive and responsible business that is helping to build a better society. We are looking for a Head of Data & Analytics to join our Technology & Sustainability team in Leavesden (Watford). The Head of Data Analytics will be responsible for setting the strategic direction, governance, and delivery of data capabilities across the organisation. * Be accountable for defining and executing the organisations data and analytics strategy, aligning it with business priorities and regulatory requirements. * Lead the Data Analytics and Engineering function, ensuring seamless collaboration across Analysts, Engineers, Architects, and Governance specialists, and preparing for the future integration of Data Science.
        Description and requirements - Skanska, one of the worlds leading project development and construction groups, is an inclusive and responsible business that is helping to build a better society. We are looking for a Head of Data & Analytics to join our Technology & Sustainability team in Leavesden (Watford). The Head of Data Analytics will be responsible for setting the strategic direction, governance, and delivery of data capabilities across the organisation. * Be accountable for defining and executing the organisations data and analytics strategy, aligning it with business priorities and regulatory requirements. * Lead the Data Analytics and Engineering function, ensuring seamless collaboration across Analysts, Engineers, Architects, and Governance specialists, and preparing for the future integration of Data Science.
        more
        Date Posted: 11/12/2025 - Location: London - Job Type: Full time - Marketing Automation Executive (FTC) London / Reigate - We have an exciting opportunity to join our Marketing Automation team, as a Marketing Automation Executive on a 15 month FTC. We are looking for someone with experience in Microsoft Dynamics 365 ecosystem, to be hands on in our development and execution and optimisation of automated marketing campaigns that drive engagement, generate leads, and support the overall customer lifecycle - Please note: The is role will be initially Reigate based but will then move to our London office in Q2 2026 - About Just - We help people achieve a better later life. Thats our purpose and its the reason we exist. We are a fast-growing company helping customers enjoy the retirement they deserve. We do this through a variety of market leading, award-winning products a
        Date Posted: 11/12/2025 - Location: London - Job Type: Full time - Marketing Automation Executive (FTC) London / Reigate - We have an exciting opportunity to join our Marketing Automation team, as a Marketing Automation Executive on a 15 month FTC. We are looking for someone with experience in Microsoft Dynamics 365 ecosystem, to be hands on in our development and execution and optimisation of automated marketing campaigns that drive engagement, generate leads, and support the overall customer lifecycle - Please note: The is role will be initially Reigate based but will then move to our London office in Q2 2026 - About Just - We help people achieve a better later life. Thats our purpose and its the reason we exist. We are a fast-growing company helping customers enjoy the retirement they deserve. We do this through a variety of market leading, award-winning products a
        more

        Pen Tester

        Stackstudio Digital Ltd.
        Reading (RG1)
        From £400 to £410 per day
        Role/Job Title:Pen Tester - Work Location: Reading (3days) The Role - We're looking for a Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing. You shall also perform in-depth analysis of penetration testing results and create a report that describes findings, exploitation procedures, risks and recommendations. Please include a brief outline of the impact this role will have, including overview of customer industry and projects, access to cutting-edge technology etc. Do NOT include customer name. Your Responsibilities (Up to 10, avoiding repetition) * Lead engagements from kickoff with clients through scoping engagements, penetration testing and rep
        Role/Job Title:Pen Tester - Work Location: Reading (3days) The Role - We're looking for a Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing. You shall also perform in-depth analysis of penetration testing results and create a report that describes findings, exploitation procedures, risks and recommendations. Please include a brief outline of the impact this role will have, including overview of customer industry and projects, access to cutting-edge technology etc. Do NOT include customer name. Your Responsibilities (Up to 10, avoiding repetition) * Lead engagements from kickoff with clients through scoping engagements, penetration testing and rep
        more

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        Frequently Asked Questions

        How many contract API jobs are there in Rackend?
        There are 13 contract API jobs within 20 miles of Rackend available on CWJobs right now.

        Where in Rackend are these contract jobs?
        You can find contract jobs in Beeches Industrial Estate, Datchet Common, Freshbrook.

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