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44 api developer jobs found

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api developer £300 - £400
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Contract Spy
Mar 27, 2026
Duration not stated
Senior Android Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...
Contract Spy
Mar 27, 2026
Duration not stated
Senior IOS Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
  400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior iOS Developer to design, build, and maintain high-quality native iOS applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...
Contract Spy
Mar 20, 2026
Duration not stated
Senior Android Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within structured and governed...
Contract Spy
Mar 20, 2026
Duration not stated
Senior IOS Developer at Scrumconnect Consulting, Staines-upon-Thames TW18, £400-£425 per day
£400 - £425 per day
Contract Spy Staines TW18, UK
  400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior iOS Developer to design, build, and maintain high-quality native iOS applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...
Contract Spy
Mar 31, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day (Outside IR35)
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 30, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day (Outside IR35)
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 27, 2026
Duration not stated
System Administration Tooling at Omnis Intelligence Limited, United Kingdom, £250-£300 per day
£250 - £300 per day
Contract Spy United Kingdom
Introduction The organisation develops and operates a suite of digital platforms that support the management and analysis of operational data within the automotive sector. These platforms integrate information from multiple sources and provide tools that enable manufacturers, dealer groups, and operational teams to work with data effectively. As the platform continues to evolve, we are developing a set of internal system administration tools that allow authorised users to manage configuration, reference data, assets, and platform access in a structured and secure way. These tools form an important part of the platform infrastructure, enabling operational teams to maintain system configuration, manage users and permissions, and administer key platform data without requiring direct database access. Role Overview This role focuses on designing and developing internal system administration tooling that supports the operation and management of the organisation’s...
Contract Spy
Mar 24, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised qualification in Computer Science...
Contract Spy
Mar 23, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day (Outside IR35)
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 17, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised qualification in Computer Science...
Contract Spy
Mar 16, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250-£450 per day (Outside IR35)
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 10, 2026
up to 6 Months
Lead Full Stack Developer - Health Technology Platform at OneCare Group, Remote, 3 Months, £250-£450 per day Outside IR35
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 09, 2026
Duration not stated
Lead Full Stack Developer - Health Technology Platform at OneCare Group Ltd, Remote, £250 - £450 a day
£250 - £450 per day
Contract Spy Remote
Potential contract extension or permanent CTO role (Outside IR35) Reports to: Founder, OneCare Group Ltd ABOUT ONECARE OneCare Healthcare Mall is a social enterprise creating the UK's first network of integrated community health hubs. Our vision is simple: a one-stop shop where patients can access blood tests, scans, physiotherapy, pharmacy, and same-day results interpretation—all in one visit. Job Overview We are seeking an exceptional Lead Full Stack Developer to design, build, and launch the Minimum Viable Product (MVP) of OneCareOS. You will be our first technical hire, working directly with the Founder to translate a bold vision into a working platform that will power our first 3,000 sq ft health hub. Desirable Experience working within healthcare or NHS systems Familiarity with FHIR / HL7 or healthcare data standards Experience integrating third-party systems or public sector APIs Startup or MVP build experience A recognised...
Contract Spy
Mar 25, 2026
Duration not stated
AI Developer/Lead – Azure at IIT Software, Leeds, £400 per day
£400 per day
Contract Spy Leeds, UK
We are urgently looking for AI Developer / Lead – Azure Role: AI Developer / Lead – Azure Location: Leeds UK, 2 days per week in office Job Type: Contract Inside IR35, Rate based on profile. Experience Level: 7+ years Understanding of core AI concepts including LLMs, prompt engineering, automation, decision support and responsible AI. Experience assessing data quality, readiness, lineage and feasibility for AI‑enabled solutions. Ability to design end‑to‑end AI workflows including prompts, orchestration, guardrails and human‑in‑the‑loop models. Skilled in user research, facilitation, co‑design and requirements‑gathering workshops. Working knowledge of Copilot and Power Platform as well as Service Design/UX. Working knowledge of Microsoft Azure AI Fundamentals Excellent stakeholder management and communication skills, including senior‑level engagement. Commercial awareness and a...
Contract Spy
Mar 18, 2026
Duration not stated
AI Developer/Lead – Azure at IIT Software, Leeds, £400 per day
£400 per day
Contract Spy Leeds, UK
We are urgently looking for AI Developer / Lead – Azure Role: AI Developer / Lead – Azure Location: Leeds UK, 2 days per week in office Job Type: Contract Inside IR35, Rate based on profile. Experience Level: 7+ years Understanding of core AI concepts including LLMs, prompt engineering, automation, decision support and responsible AI. Experience assessing data quality, readiness, lineage and feasibility for AI‑enabled solutions. Ability to design end‑to‑end AI workflows including prompts, orchestration, guardrails and human‑in‑the‑loop models. Skilled in user research, facilitation, co‑design and requirements‑gathering workshops. Working knowledge of Copilot and Power Platform as well as Service Design/UX. Working knowledge of Microsoft Azure AI Fundamentals Excellent stakeholder management and communication skills, including senior‑level engagement. Commercial awareness and a value‑driven...
Contract Spy
Mar 11, 2026
Duration not stated
AI Developer / Lead – Azure - In Leeds UK at IIT Software, Leeds, £400 per day
£400 per day
Contract Spy Leeds, UK
We are urgently looking for AI Developer / Lead – Azure Role: AI Developer / Lead – Azure Location: Leeds UK, 2 days per week in office Job Type: Contract Inside IR35, Rate based on profile. Experience Level: 7+ years Understanding of core AI concepts including LLMs, prompt engineering, automation, decision support and responsible AI. Experience assessing data quality, readiness, lineage and feasibility for AI‑enabled solutions. Ability to design end‑to‑end AI workflows including prompts, orchestration, guardrails and human‑in‑the‑loop models. Skilled in user research, facilitation, co‑design and requirements‑gathering workshops. Working knowledge of Copilot and Power Platform as well as Service Design/UX. Working knowledge of Microsoft Azure AI Fundamentals Excellent stakeholder management and communication skills, including senior‑level engagement. Commercial awareness and a value‑driven mindset. Familiarity with responsible AI and risk‑aware...
Contract Spy
Apr 02, 2026
up to 6 Months
Software Engineer - Java at Pulselive, London Kennington, 3 Months+, £400-£500 per day (Outside IR35)
£400 - £500 per day
Contract Spy Kennington, London, UK
Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot...
Contract Spy
Apr 02, 2026
up to 6 Months
Software Engineer - Java at Pulselive, Basingstoke, 3 Months+, £400-£500 per day (Outside IR35)
£400 - £500 per day
Contract Spy Basingstoke, UK
Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP   As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required.   Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot...
Contract Spy
Apr 02, 2026
Duration not stated
Senior ServiceNow Developer - ITAM/ITOM at Kaptius, Remote/UAE, £250-£450 perday
£250 - £450 per day
Contract Spy Remote
Senior ServiceNow Developer – ITAM / ITOM **Please note these roles require frequent travel to the UAE (Abu Dhabi) when safe to do so. Anyone engaged in this project would be expected to travel to the UAE with expenses covered (Flights, Travel & Accommodation) for 1 week a month minimum. Employment Type: Contract - Initial 3 Month Contract with Extensions expected into 2027 Experience Level: 5+ Years ServiceNow Development Experience About Kaptius Kaptius is a fast-growing ServiceNow pure-play partner delivering enterprise-scale digital transformation programmes globally. As our delivery capability continues to expand, we are growing our India development centre in Hyderabad to support major customer implementations across the ServiceNow platform. We are currently seeking an experienced Senior ServiceNow Developer with strong expertise in IT Asset Management (ITAM) and IT Operations Management (ITOM) to join our engineering team and...
Contract Spy
Mar 30, 2026
Duration not stated
Golang - Software Engineer at Test Yantra Software Solutions Private Limited, Sheffield, £400-£500 per day
£400 - £500 per day
Contract Spy Sheffield, UK
Key Accountabilities Responsibilities will include: · Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client using Python , Golang, Docker and Cloud-Native services . · Implement and manage database schema changes using Liquibase , ensuring alignment with compliance and audit standards. · Collaborate closely with Architecture and DevOps teams to enhance, maintain and mature Product capabilities/features. · Perform root cause analysis and implement solutions for incidents and performance bottlenecks. Qualifications and experience The ideal candidate for this role will have the below experience and qualifications: · Bachelor’s or Master’s degree in Computer Science or equivalent industry experience. · Comes from Software Engineering background with infrastructure experience. · 5+ years of development experience...
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