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26 Contract API jobs in South Yorkshire + 20 miles
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Hands-on experience with REST API design, TDD, and microservices
Hands-on experience with REST API design, TDD, and microservices
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oStrong knowledge and working experience with Retrofit for API integration.
oStrong knowledge and working experience with Retrofit for API integration.
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Job Title: Penetration Tester - Location: Leeds (Hybrid; 4 days in office) Job Type: Contract (Inside IR35) Duration: 6 Months Job Summary: Join Tata Consultancy Services (TCS) as a Pen Tester and play a critical role in safeguarding some of the largest and most innovative clients in the UK and worldwide. You'll be part of a purpose-led transformation company, making a meaningful impact through challenging projects that demand ambitious innovation and thought leadership. * Lead client engagements from kickoff through to scoping, penetration testing, and reporting, ensuring delivery within agreed scope and deadlines. * Perform comprehensive penetration testing across networks, web applications, APIs, cloud security, thick client applications, wireless, social engineering, and physical environments.
Job Title: Penetration Tester - Location: Leeds (Hybrid; 4 days in office) Job Type: Contract (Inside IR35) Duration: 6 Months Job Summary: Join Tata Consultancy Services (TCS) as a Pen Tester and play a critical role in safeguarding some of the largest and most innovative clients in the UK and worldwide. You'll be part of a purpose-led transformation company, making a meaningful impact through challenging projects that demand ambitious innovation and thought leadership. * Lead client engagements from kickoff through to scoping, penetration testing, and reporting, ensuring delivery within agreed scope and deadlines. * Perform comprehensive penetration testing across networks, web applications, APIs, cloud security, thick client applications, wireless, social engineering, and physical environments.
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DevOps Software Engineer - Outside IR35 | £550–£650 per day - Elevation Recruitment Group are partnering with a forward-thinking FinTech business who are changing how the financial services industry uses technology. They’re looking for an experienced DevOps Software Engineer to join their high-performing engineering team and play a key role in scaling cloud infrastructure and driving automation across the platform. This is an opportunity to work with cutting-edge tools and modern CI/CD practices in a fast-moving, collaborative environment where innovation is encouraged and ideas are heard. * Design, implement and maintain CI/CD pipelines for microservices and APIs * Support and optimise cloud infrastructure (AWS / Azure / GCP) * Build and manage containerised environments using Docker and Kubernetes * Collaborate closely with developers to streamline code deployment a
DevOps Software Engineer - Outside IR35 | £550–£650 per day - Elevation Recruitment Group are partnering with a forward-thinking FinTech business who are changing how the financial services industry uses technology. They’re looking for an experienced DevOps Software Engineer to join their high-performing engineering team and play a key role in scaling cloud infrastructure and driving automation across the platform. This is an opportunity to work with cutting-edge tools and modern CI/CD practices in a fast-moving, collaborative environment where innovation is encouraged and ideas are heard. * Design, implement and maintain CI/CD pipelines for microservices and APIs * Support and optimise cloud infrastructure (AWS / Azure / GCP) * Build and manage containerised environments using Docker and Kubernetes * Collaborate closely with developers to streamline code deployment a
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Role/Job Title: Collibra Developer - Work Location: Sheffield, UK (2 days) The focus is on creating connections between business processes, data, products, services, and technology, that underpin our interactions with customers and financial success. The Collibra team is based within the Group Data Management team established in March 2012, as part of an client-wide program to improve the management of data across the organization. * Ensure the Collibra (Group Data Dictionary tool) is available 24/7. * Implement new functionality or workflows on a need basis. * Fix application issues. * Optimize code if required. * Automate support tasks wherever possible. The Role - Seeking a Collibra Technical SME to design, implement, and optimize metadata management and data governance solutions using the Collibra platform.
Role/Job Title: Collibra Developer - Work Location: Sheffield, UK (2 days) The focus is on creating connections between business processes, data, products, services, and technology, that underpin our interactions with customers and financial success. The Collibra team is based within the Group Data Management team established in March 2012, as part of an client-wide program to improve the management of data across the organization. * Ensure the Collibra (Group Data Dictionary tool) is available 24/7. * Implement new functionality or workflows on a need basis. * Fix application issues. * Optimize code if required. * Automate support tasks wherever possible. The Role - Seeking a Collibra Technical SME to design, implement, and optimize metadata management and data governance solutions using the Collibra platform.
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Role: Contract Senior Software Engineer - Vue.js - Rate: Negotiable Outside IR35 per day - Location: Leeds - Hybrid (c. 2 days on site) Length: Initial 3 Months, likely to extend - We're partnering with a growing, forward-thinking technology consultancy dedicated to building scalable, reliable, and high-performing digital products that deliver exceptional user experiences. As a Senior Front-End Engineer, you'll play a key role in designing and developing high-quality user interfaces using Vue.js. You'll collaborate closely with designers, product managers, and backend engineers to create performant, maintainable, and visually engaging applications that drive the best possible outcomes for our customers. * Develop and maintain front-end applications using Vue.js (Vue 3 preferred) * Work closely with backend and design teams to deliver features end-to-end
Role: Contract Senior Software Engineer - Vue.js - Rate: Negotiable Outside IR35 per day - Location: Leeds - Hybrid (c. 2 days on site) Length: Initial 3 Months, likely to extend - We're partnering with a growing, forward-thinking technology consultancy dedicated to building scalable, reliable, and high-performing digital products that deliver exceptional user experiences. As a Senior Front-End Engineer, you'll play a key role in designing and developing high-quality user interfaces using Vue.js. You'll collaborate closely with designers, product managers, and backend engineers to create performant, maintainable, and visually engaging applications that drive the best possible outcomes for our customers. * Develop and maintain front-end applications using Vue.js (Vue 3 preferred) * Work closely with backend and design teams to deliver features end-to-end
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£350-£400 per day (inside IR35) - 9 months+ 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 Security Tester to join the current test team. Key Duties and Responsibilities * Strong capability to identify security gaps across systems and processes. * Experience creating and applying risk models. * Ability to develop and execute a comprehensive cyber security test strategy. * Strong understanding of Azure security risks, especially related to Azure Storage. * Knowledge of immutable backups and secure data retention strategies. * Experience with disaster recovery planning, including full restore testing. * Expertise in multi-factor authentication (MFA) setup and testing. * Vulnerability management - scanning, prioritisation, remediation validation.
£350-£400 per day (inside IR35) - 9 months+ 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 Security Tester to join the current test team. Key Duties and Responsibilities * Strong capability to identify security gaps across systems and processes. * Experience creating and applying risk models. * Ability to develop and execute a comprehensive cyber security test strategy. * Strong understanding of Azure security risks, especially related to Azure Storage. * Knowledge of immutable backups and secure data retention strategies. * Experience with disaster recovery planning, including full restore testing. * Expertise in multi-factor authentication (MFA) setup and testing. * Vulnerability management - scanning, prioritisation, remediation validation.
Role: Contract Senior Backend Software Engineer - Node.js * Rate: c.£550 Outside IR35 Per day * Location: Leeds - Hybrid (2x days on site) * Length: 3-6 months - We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers. As a Senior Backend Software Engineer (Node.js), you will be responsible for designing, developing, and maintaining server-side applications and services. You'll work closely with cross-functional teams to ensure our systems are performant, secure, and deliver a great user experience. * Design, implement, and maintain backend services, APIs, and databases. * Collaborate with product managers, frontend engineers, and other stakeholders to deliver features end-to-end. * Ensure systems are scalable, reliable, and maintainable.
Role: Contract Senior Backend Software Engineer - Node.js * Rate: c.£550 Outside IR35 Per day * Location: Leeds - Hybrid (2x days on site) * Length: 3-6 months - We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers. As a Senior Backend Software Engineer (Node.js), you will be responsible for designing, developing, and maintaining server-side applications and services. You'll work closely with cross-functional teams to ensure our systems are performant, secure, and deliver a great user experience. * Design, implement, and maintain backend services, APIs, and databases. * Collaborate with product managers, frontend engineers, and other stakeholders to deliver features end-to-end. * Ensure systems are scalable, reliable, and maintainable.
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Familiarity with modern architectural patterns (e.g. microservices, event-driven, API-first).
Familiarity with modern architectural patterns (e.g. microservices, event-driven, API-first).
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Hands-on expertise with the AWS Serverless Stack (Lambda, API Gateway)
Hands-on expertise with the AWS Serverless Stack (Lambda, API Gateway)
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Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client usingPython,Golang, DockerandCloud-Native services. * Building RESTful API Services.
Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client usingPython,Golang, DockerandCloud-Native services. * Building RESTful API Services.
Role Senior Technology Architect Technology Liferay, Java, Spring, REST API Location Leeds Job Description At Infosys, we assure that your career will never stand still, we will inspire you to build whats next and we will navigate further together. * Experience in using API gateway for backend data / services integration to Liferay portal.
Role Senior Technology Architect Technology Liferay, Java, Spring, REST API Location Leeds Job Description At Infosys, we assure that your career will never stand still, we will inspire you to build whats next and we will navigate further together. * Experience in using API gateway for backend data / services integration to Liferay portal.
API Testing: Proficiency in testing RESTful APIs, including authentication, payload validation, and error handling.
API Testing: Proficiency in testing RESTful APIs, including authentication, payload validation, and error handling.
Assist with the creation of, and input into, API documentation used to persist data from the applications
Assist with the creation of, and input into, API documentation used to persist data from the applications
Define and document functional and non-functional requirements, clear acceptance criteria, API integration points and data mapping. * Analyse dependencies, risks and impacts across systems including Salesforce, AWS API and Figaro. * Strong technical understanding of Salesforce, AWS API and core systems (e.g. Figaro), including data structures and integration principles.
Define and document functional and non-functional requirements, clear acceptance criteria, API integration points and data mapping. * Analyse dependencies, risks and impacts across systems including Salesforce, AWS API and Figaro. * Strong technical understanding of Salesforce, AWS API and core systems (e.g. Figaro), including data structures and integration principles.
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Technology Liferay, Java, Spring, REST API * Experience in using API gateway for backend data / services integration to Liferay portal.
Technology Liferay, Java, Spring, REST API * Experience in using API gateway for backend data / services integration to Liferay portal.
Experience with API management and microservices architecture * Microsoft Graph API development
Experience with API management and microservices architecture * Microsoft Graph API development
Own the analysis process for your product or project workstream including, the authoring of good quality user stories, which will contain, business requirements, API integration points, data and data mapping, acceptance criteria, and non-functional requirements * A technical understanding of React, React Native and API integration
Own the analysis process for your product or project workstream including, the authoring of good quality user stories, which will contain, business requirements, API integration points, data and data mapping, acceptance criteria, and non-functional requirements * A technical understanding of React, React Native and API integration
As a Technical Product Manager Betting Platform , you will play a key role in supporting the evolution of Caesars Digitals Betting Engine and related services. Youll collaborate with product leaders, engineering, and trading teams to help modernize and enhance our platform, contributing to a seamless and engaging betting experience for our customers across all channels. This role is ideal for someone with a solid technical foundation and a growing understanding of the sports betting domain. Technically, you need a sound understanding of high-performance, real-time systems to deliver a robust, scalable solution for the future. This role is hybrid, working a minimum of 2-3 days per week from your home office location. Home Office: Leeds, UK - What Youll Do * Contribute to the product roadmap for the Betting Engine, focusing on performance, scalability, and reliability.
As a Technical Product Manager Betting Platform , you will play a key role in supporting the evolution of Caesars Digitals Betting Engine and related services. Youll collaborate with product leaders, engineering, and trading teams to help modernize and enhance our platform, contributing to a seamless and engaging betting experience for our customers across all channels. This role is ideal for someone with a solid technical foundation and a growing understanding of the sports betting domain. Technically, you need a sound understanding of high-performance, real-time systems to deliver a robust, scalable solution for the future. This role is hybrid, working a minimum of 2-3 days per week from your home office location. Home Office: Leeds, UK - What Youll Do * Contribute to the product roadmap for the Betting Engine, focusing on performance, scalability, and reliability.
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Hours - Full-time - Location - Leeds (Hybrid) Department - Research and Development - Salary £30,000 - £40,000 per year - Jaywing, an award-winning marketing agency, is now a proud part of Stubben Edge Group, a cutting-edge fintech innovator. This combination has created a unique powerhouse, blending deep expertise in marketing technology with the dynamic, high-growth world of finance and applied AI. This is an incredibly exciting time to join us. We are at the start of a journey to integrate these two worlds, creating solutions that will redefine both industries. The Opportunity: Work at the Intersection of FinTech, MarTech, and AI - We are looking for two ambitious System Developers to join our Research and Development team. This team forms the critical core of our award-winning Accelerator Lab, placing you at the very heart of our innovation.
Hours - Full-time - Location - Leeds (Hybrid) Department - Research and Development - Salary £30,000 - £40,000 per year - Jaywing, an award-winning marketing agency, is now a proud part of Stubben Edge Group, a cutting-edge fintech innovator. This combination has created a unique powerhouse, blending deep expertise in marketing technology with the dynamic, high-growth world of finance and applied AI. This is an incredibly exciting time to join us. We are at the start of a journey to integrate these two worlds, creating solutions that will redefine both industries. The Opportunity: Work at the Intersection of FinTech, MarTech, and AI - We are looking for two ambitious System Developers to join our Research and Development team. This team forms the critical core of our award-winning Accelerator Lab, placing you at the very heart of our innovation.
About The Role - FDM is a global business and technology consultancy seeking a number of Dynamics 365 Developers to work for an end client within the public sector. This is initially a 6-month contract with the potential to extend and will be a remote role with the occasional travel to the clients office in Solihull. The focus of these roles will be around Dynamics Customer Service, specifically hands-on coding for a suite of applications which have been built on top of a CRM. Our consultancy client has developed all of the systems across a variety of public services. The ideal candidate will have proven commercial experience and knowledge in Dynamics 365 Customer Services (ideally also Marketing & Sales), as well as Azure Logic Apps and C#. You will also possess a solid understanding and experience with APIs and Integrations.
About The Role - FDM is a global business and technology consultancy seeking a number of Dynamics 365 Developers to work for an end client within the public sector. This is initially a 6-month contract with the potential to extend and will be a remote role with the occasional travel to the clients office in Solihull. The focus of these roles will be around Dynamics Customer Service, specifically hands-on coding for a suite of applications which have been built on top of a CRM. Our consultancy client has developed all of the systems across a variety of public services. The ideal candidate will have proven commercial experience and knowledge in Dynamics 365 Customer Services (ideally also Marketing & Sales), as well as Azure Logic Apps and C#. You will also possess a solid understanding and experience with APIs and Integrations.
Were Civica, and we create software that helps deliver critical services for citizens all around the world. From local government, to education, health, and care, over 5,000 public bodies across the globe use our software to provide essential services to over 100 million citizens. Our aspiration is to be a GovTech champion everywhere we work, supporting the needs of citizens and those who serve them every day. Building on 21 years of continuous growth and success, we're at a pivotal point in our journey to realise that aspiration. Why you will love this opportunity as Senior Data Analyst in our People Analytics Team at Civica - We are looking for a People Analytics Senior Data Analyst to join our global People Systems & Data team. This is a small but high-impact team with significant opportunity to shape how we use data across the business.
Were Civica, and we create software that helps deliver critical services for citizens all around the world. From local government, to education, health, and care, over 5,000 public bodies across the globe use our software to provide essential services to over 100 million citizens. Our aspiration is to be a GovTech champion everywhere we work, supporting the needs of citizens and those who serve them every day. Building on 21 years of continuous growth and success, we're at a pivotal point in our journey to realise that aspiration. Why you will love this opportunity as Senior Data Analyst in our People Analytics Team at Civica - We are looking for a People Analytics Senior Data Analyst to join our global People Systems & Data team. This is a small but high-impact team with significant opportunity to shape how we use data across the business.
Were Civica, and we create software that helps deliver critical services for citizens all around the world. From local government, to education, health, and care, over 5,000 public bodies across the globe use our software to provide essential services to over 100 million citizens. Our aspiration is to be a GovTech champion everywhere we work, supporting the needs of citizens and those who serve them every day. Building on 21 years of continuous growth and success, we're at a pivotal point in our journey to realise that aspiration. Why you will love this opportunity as People Systems Partner at Civica - We are looking for a People Systems Partner to join our global People Systems & Data team . This is a small but high-impact team with significant opportunity to improve how our HR technology ecosystem operates.
Were Civica, and we create software that helps deliver critical services for citizens all around the world. From local government, to education, health, and care, over 5,000 public bodies across the globe use our software to provide essential services to over 100 million citizens. Our aspiration is to be a GovTech champion everywhere we work, supporting the needs of citizens and those who serve them every day. Building on 21 years of continuous growth and success, we're at a pivotal point in our journey to realise that aspiration. Why you will love this opportunity as People Systems Partner at Civica - We are looking for a People Systems Partner to join our global People Systems & Data team . This is a small but high-impact team with significant opportunity to improve how our HR technology ecosystem operates.
About The Role - FDM is a global business and technology consultancy seeking a Network Test and Automation Engineer to work for our client within the telecoms sector. This role can be carried out remotely or in Bradford. Our client is seeking a talented network test and automation engineer to join their diverse and high performing team. The ideal candidate will be professional, driven with a customer focus and be delivery orientated. The client is specifically looking for someone with a desire to learn and an agile and adaptable mindset. Responsibilities * Create test plans and test cases based on specifications/requirements from the project team * Responsible for executing tests including various types of testing such as system, regression, and performance testing * Analyse and document software defects, and collaborate with the development team to troubleshoot and f
About The Role - FDM is a global business and technology consultancy seeking a Network Test and Automation Engineer to work for our client within the telecoms sector. This role can be carried out remotely or in Bradford. Our client is seeking a talented network test and automation engineer to join their diverse and high performing team. The ideal candidate will be professional, driven with a customer focus and be delivery orientated. The client is specifically looking for someone with a desire to learn and an agile and adaptable mindset. Responsibilities * Create test plans and test cases based on specifications/requirements from the project team * Responsible for executing tests including various types of testing such as system, regression, and performance testing * Analyse and document software defects, and collaborate with the development team to troubleshoot and f
About The Role - FDM is a global business and technology consultancy seeking a Scala Engineer to work for our client within the technology sector. This is initially a 6-month contract with the potential to extend and will be a hybrid role based in Telford. Our client is seeking a talented Scala Engineer to join a growing digital engineering team delivering a major digital transformation portfolio for a central government client. This is a fantastic opportunity to be part of a high-performing, agile team building secure, scalable, and high-impact backend systems that directly support citizen-facing services. This role is ideal for engineers who are passionate about functional programming, backend development, and contributing to clean, maintainable, and testable code in data-intensive environments.
About The Role - FDM is a global business and technology consultancy seeking a Scala Engineer to work for our client within the technology sector. This is initially a 6-month contract with the potential to extend and will be a hybrid role based in Telford. Our client is seeking a talented Scala Engineer to join a growing digital engineering team delivering a major digital transformation portfolio for a central government client. This is a fantastic opportunity to be part of a high-performing, agile team building secure, scalable, and high-impact backend systems that directly support citizen-facing services. This role is ideal for engineers who are passionate about functional programming, backend development, and contributing to clean, maintainable, and testable code in data-intensive environments.