12 api developer jobs found in London, hybrid

Skills & Experience Job roles: Back End Experience level: Lead Core skills considered: APIs, REST, SOAP, JSON, SQL Other skills considered: Java, Groovy, CI/CD, AWS, Azure Logistics Base salary: Undisclosed Employment type: Freelance/Contract Remote working: Hybrid Visa sponsorship: Not available Job Description We are looking for a hands-on Boomi Integration Architect who can design scalable integration solutions while leading development and delivery. The role combines architecture, technical leadership, client engagement and hands-on Boomi development. Key Responsibilities Design enterprise integration solutions using the Boomi platform. Lead discovery, requirements and solution-design sessions. Build and review complex Boomi integration processes. Develop reusable APIs, components and integration frameworks....

Skills & Experience Job roles: Back End Experience level: Mid, Senior Core skills considered: APIs, REST, SOAP, SQL, Java Other skills considered: Groovy, CI/CD, AWS, Azure Logistics Base salary: Undisclosed Employment type: Freelance/Contract Remote working: Hybrid Visa sponsorship: Not available Job Description We are looking for an experienced Boomi Developer to design, build, test and support integration solutions using the Boomi Enterprise Platform. The role requires strong hands-on development skills across APIs, cloud applications, databases and enterprise systems. Key Responsibilities Develop and maintain integration processes using Boomi. Build integrations between cloud and on-premises applications. Configure Boomi connectors, maps, profiles, process properties and environment extensions. Develop REST,...

Role description Role: Generative AI Scientist Permanent / Fixed term contract/ Contract Inside IR35 Contract Length: Initial 6-12 months with possible extensions Start Date: Immediate preferred Location Requirement:Onsite (3 days per week in the office and 2 days remote ) Applicants legally authorized to work in the United Kingdom without the need for current or future visa sponsorship preferred Experience: Minimum10-15 years We are seeking a Generative AI Scientist to design and deliver agent‑based, AI‑enabled solutions integrated into complex enterprise environments. This is a hands‑on engineering role, focused on building production‑grade AI systems that move beyond experimentation into scalable, secure, and measurable outcomes for our clients. You’ll work closely with UST’s engineering teams, AI specialists, and business stakeholders to translate high‑value use cases into robust solutions. What You’ll Be Doing:...

Job description   Job Title: Full Stack Developer (contract) Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This...

Job description   Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This...

Location: London 1-2 days a week. Department: Engineering Employment Type: Contract Contract Length: 6 months (with potential for extension) About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done. About the role: As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and...

Location:            Leeds or London (Hybrid) Type:                  Contract / Fixed-Term Employment Start:                  ASAP   We’re seeking a Full Stack Engineer with a strong backend focus to help build and modernise the Global Data Network (GDN), a high-impact platform enabling the secure sharing and analysis of fraud intelligence across systems. This is a hands-on engineering role where you’ll work across backend services, data platforms, cloud infrastructure, and UI, contributing to the evolution of a cloud-native, API-driven architecture. You’ll play a critical role in transforming legacy data-sharing approaches into a scalable, real-time, graph-powered platform that enhances fraud detection and intelligence capabilities.  ...

Role description Role: Generative AI Scientist Permanent / Fixed term contract/ Contract Inside IR35 Contract Length: Initial 6-12 months with possible extensions Start Date: Immediate preferred Location Requirement:Onsite (3 days per week in the office and 2 days remote ) Applicants legally authorized to work in the United Kingdom without the need for current or future visa sponsorship preferred Experience: Minimum10-15 years We are seeking a Generative AI Scientist to design and deliver agent‑based, AI‑enabled solutions integrated into complex enterprise environments. This is a hands‑on engineering role, focused on building production‑grade AI systems that move beyond experimentation into scalable, secure, and measurable outcomes for our clients. You’ll work closely with UST’s engineering teams, AI specialists, and business stakeholders to translate high‑value use cases into robust solutions. What You’ll Be Doing:...

Contract - AI Data Engineer (Azure) Job description Job Title: AI Data Engineer (Azure) Location: London Hybrid. Travel to the London office 2 days a week Duration: 6 months Contract Start Date: ASAP Day rate: Competitive (Inside IR35) Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte. The Role We are looking for a highly skilled AI Data Engineer (Contractor) specialising in Azure to join our Digital Innovation team, supporting cutting-edge data and analytics use cases across Tax & Legal. This role is ideal for someone who combines strong AI/GenAI data pipeline expertise with hands-on...

Contract - Full Stack Developer Job description Job Title: Full Stack Developer (contract) Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35) Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte. The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of Development and...

Location: London 1-2 days a week. Department: Engineering Employment Type: Contract Contract Length: 6 months (with potential for extension) About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done. About the role: As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and...

Role description Role: Generative AI Scientist Permanent / Fixed term contract/ Contract Inside IR35 Contract Length: Initial 6-12 months with possible extensions Start Date: Immediate preferred Location Requirement:Onsite (3 days per week in the office and 2 days remote ) Applicants legally authorized to work in the United Kingdom without the need for current or future visa sponsorship preferred Experience: Minimum10-15 years We are seeking a Generative AI Scientist to design and deliver agent‑based, AI‑enabled solutions integrated into complex enterprise environments. This is a hands‑on engineering role, focused on building production‑grade AI systems that move beyond experimentation into scalable, secure, and measurable outcomes for our clients. You’ll work closely with UST’s engineering teams, AI specialists, and business stakeholders to translate high‑value use cases into robust solutions. What You’ll Be Doing:...