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4 Contract API jobs in Cheltenham + 20 miles
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Software Engineer (Python / React)?? Cheltenham Area - on site - Contract: Inside IR35, 12 months+ The Opportunity - We are seeking talented Software Engineers to join a cutting-edge programme supporting UK Intelligence customers. These roles focus on building modern, cloud-native applications and services that enable the operational use of AI and data-driven capabilities. While detailed job specifications are still being finalised, the mission, technology stack, and innovation culture make this a highly compelling opportunity. What You'll Be Doing * Develop user-facing applications, APIs, and backend services - o Python - o FastAPI - o React * Enable the integration and operational use of AI and data-driven capabilities * Contribute to scalable, cloud-native application development * Artificial Intelligence * Machine Learning * Natural Language Processing (NLP) * Cloud-native engineering
Software Engineer (Python / React)?? Cheltenham Area - on site - Contract: Inside IR35, 12 months+ The Opportunity - We are seeking talented Software Engineers to join a cutting-edge programme supporting UK Intelligence customers. These roles focus on building modern, cloud-native applications and services that enable the operational use of AI and data-driven capabilities. While detailed job specifications are still being finalised, the mission, technology stack, and innovation culture make this a highly compelling opportunity. What You'll Be Doing * Develop user-facing applications, APIs, and backend services - o Python - o FastAPI - o React * Enable the integration and operational use of AI and data-driven capabilities * Contribute to scalable, cloud-native application development * Artificial Intelligence * Machine Learning * Natural Language Processing (NLP) * Cloud-native engineering
FEATURED
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Contract Web Developer - Role: Web Developer - Competitive Daily Rate - Location: Gloucestershire - On Site Requirements: Hybrid (Expected 2 days on site per week) Our client is looking for a Web Developer to join their team, you will be responsible for developing, maintaining, and optimising websites, internal applications, and digital platforms. Responsibilities * Develop and maintain websites, web apps, and digital platforms using WordPress, HubSpot, Node.js, and modern web technologies. * Build new features, integration's, and internal tools to support business, product, and marketing needs. * Ensure platforms are secure, responsive, accessible, SEO-optimised, and high performing. * Collaborate with cross-functional teams and troubleshoot technical issues when needed. Skills & Experience * Experience with HTML, CSS, JavaScript, WordPress, HubSpot, Node.js, PHP, and APIs.
Contract Web Developer - Role: Web Developer - Competitive Daily Rate - Location: Gloucestershire - On Site Requirements: Hybrid (Expected 2 days on site per week) Our client is looking for a Web Developer to join their team, you will be responsible for developing, maintaining, and optimising websites, internal applications, and digital platforms. Responsibilities * Develop and maintain websites, web apps, and digital platforms using WordPress, HubSpot, Node.js, and modern web technologies. * Build new features, integration's, and internal tools to support business, product, and marketing needs. * Ensure platforms are secure, responsive, accessible, SEO-optimised, and high performing. * Collaborate with cross-functional teams and troubleshoot technical issues when needed. Skills & Experience * Experience with HTML, CSS, JavaScript, WordPress, HubSpot, Node.js, PHP, and APIs.
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API design (REST / OpenAPI)
API design (REST / OpenAPI)
FEATURED
Roke, Unit K, Elmbridge East, Gloucester, Gloucestershire, United Kingdom Job Description Posted Wednesday, 6 May 2026, 19:00 - Great ideas come from different minds. Thats why we bring together engineers, scientists, analysts, and creatives from every background and give them the trust, tools, and freedom to make a difference. What connects us is the mission: solving meaningful problems and building capability that protects what matters most. And as the challenges evolve, so do we working on the technologies that will shape tomorrow, not just today. Join our growing team and help strengthen the UKs safety and resilience. Were a leading technology and engineering company supporting customers across National Security, Defence and Intelligence, delivering systems that operate in the most demanding and sensitive environments.
Roke, Unit K, Elmbridge East, Gloucester, Gloucestershire, United Kingdom Job Description Posted Wednesday, 6 May 2026, 19:00 - Great ideas come from different minds. Thats why we bring together engineers, scientists, analysts, and creatives from every background and give them the trust, tools, and freedom to make a difference. What connects us is the mission: solving meaningful problems and building capability that protects what matters most. And as the challenges evolve, so do we working on the technologies that will shape tomorrow, not just today. Join our growing team and help strengthen the UKs safety and resilience. Were a leading technology and engineering company supporting customers across National Security, Defence and Intelligence, delivering systems that operate in the most demanding and sensitive environments.
57 exact matches jobs are outside your preferred location
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Software Engineer (PHP, Playwright, k6)
Software Engineer (PHP, Playwright, k6)
Pro Contract Jobs Ltd
Bristol (BS1)
From £500 to £550 per day Outside IR35
The organisation is strengthening its mobile and API security capabilities and is seeking an click apply for full job details
The organisation is strengthening its mobile and API security capabilities and is seeking an click apply for full job details
Pay Rate: £500-£550 (Outside IR35) Duration: 6 months' Working arrangement: Once a month - Bristo
Pay Rate: £500-£550 (Outside IR35) Duration: 6 months' Working arrangement: Once a month - Bristo
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ASP.NET Web API * API-driven backend development
ASP.NET Web API * API-driven backend development
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API integration experience and an API-first approach
API integration experience and an API-first approach
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.NET Azure Integration Developer - OUTSIDE IR35 - Fully Remote
.NET Azure Integration Developer - OUTSIDE IR35 - Fully Remote
Sanderson Recruitment
Bristol (BS1), BS1
£400 - £450 per day
Knowledge of Azure API Management desirable.
Knowledge of Azure API Management desirable.
FEATURED
Experience defining API standards, service boundaries and architectural governance.
Experience defining API standards, service boundaries and architectural governance.
Pipeline Design: Experience with API ingestion, SFTP ingestion, and resilient pipeline design.
Pipeline Design: Experience with API ingestion, SFTP ingestion, and resilient pipeline design.
This role combines software engineering, systems architecture, API development, data mapping, automation, and technical problem-solving. The goal is to identify the most effective onboarding approach for each seller, whether that involves API connectivity, bulk uploads, existing integrations, middleware solutions, or building reusable integrations where there is long-term value. Seller API Supporting businesses and developers who wish to integrate directly with the ifndautoparts Seller API. This may include existing integrations, custom-built integrations, data feeds, middleware solutions, or direct API connectivity depending on the seller's requirements. * Utilise and extend the ifndautoparts Seller API to support business seller onboarding and inventory synchronisation. * Assist external developers and technical contacts in integrating with the ifndautoparts API.
This role combines software engineering, systems architecture, API development, data mapping, automation, and technical problem-solving. The goal is to identify the most effective onboarding approach for each seller, whether that involves API connectivity, bulk uploads, existing integrations, middleware solutions, or building reusable integrations where there is long-term value. Seller API Supporting businesses and developers who wish to integrate directly with the ifndautoparts Seller API. This may include existing integrations, custom-built integrations, data feeds, middleware solutions, or direct API connectivity depending on the seller's requirements. * Utilise and extend the ifndautoparts Seller API to support business seller onboarding and inventory synchronisation. * Assist external developers and technical contacts in integrating with the ifndautoparts API.
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SC Cleared Technical Architect - Defence
SC Cleared Technical Architect - Defence
Sanderson Government and Defence
Corsham (SN13), SN13
£650 - £675 per day
Role: Technical Architect - Location: remote / Corsham - Duration: 6 months - Clearance: SC - Rate: £650 - £675 - We are seeking an experienced Technical Architect to support a major defence programme, delivering secure, scalable and resilient solutions across complex environments. Your Role - You will lead the design and assurance of technical architectures, ensuring alignment with operational and business needs while meeting strict defence and security standards. Key Responsibilities * Develop high- and low-level technical designs across defence systems * Design secure architectures spanning hybrid cloud, data platforms, secure networks, and edge environments * Support integration across MOD, allied, and industry systems * Ensure compliance with MOD standards, NCSC CAF, ISO 27001, and Zero Trust principles * Contribute to technical governance, design reviews, and assurance activities
Role: Technical Architect - Location: remote / Corsham - Duration: 6 months - Clearance: SC - Rate: £650 - £675 - We are seeking an experienced Technical Architect to support a major defence programme, delivering secure, scalable and resilient solutions across complex environments. Your Role - You will lead the design and assurance of technical architectures, ensuring alignment with operational and business needs while meeting strict defence and security standards. Key Responsibilities * Develop high- and low-level technical designs across defence systems * Design secure architectures spanning hybrid cloud, data platforms, secure networks, and edge environments * Support integration across MOD, allied, and industry systems * Ensure compliance with MOD standards, NCSC CAF, ISO 27001, and Zero Trust principles * Contribute to technical governance, design reviews, and assurance activities
FEATURED
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Primary Responsibilities - Own and manage the product backlog, ensuring clear prioritization aligned with business value - Collaborate with stakeholders (business, engineering, operations) to define product vision and roadmap - Translate business requirements into user stories with acceptance criteria - Drive Agile ceremonies sprint planning, backlog grooming, retrospectives - Work closely with development and QA teams to ensure timely delivery of features - Ensure solutions align with power system workflows (generation, transmission, distribution) Analyze energy management systems to enhance product capabilities - Validate deliverables against acceptance criteria and business expectations - Monitor product performance and drive continuous improvement initiatives - Manage stakeholder communication and expectations across multiple teams - Technical / Domain Skills
Primary Responsibilities - Own and manage the product backlog, ensuring clear prioritization aligned with business value - Collaborate with stakeholders (business, engineering, operations) to define product vision and roadmap - Translate business requirements into user stories with acceptance criteria - Drive Agile ceremonies sprint planning, backlog grooming, retrospectives - Work closely with development and QA teams to ensure timely delivery of features - Ensure solutions align with power system workflows (generation, transmission, distribution) Analyze energy management systems to enhance product capabilities - Validate deliverables against acceptance criteria and business expectations - Monitor product performance and drive continuous improvement initiatives - Manage stakeholder communication and expectations across multiple teams - Technical / Domain Skills
API-based Data Integration & Microservices exposure
API-based Data Integration & Microservices exposure
FEATURED
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Playwright, BDD/Cucumber, API testing (Rest Assured/Postman).
Playwright, BDD/Cucumber, API testing (Rest Assured/Postman).
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SolarWinds Expert
SolarWinds Expert
Stealth IT Consulting Limited
Heathcote, Warwick (CV34), CV34
From £550 to £580 per day inside IR35
API-based integrations
API-based integrations
FEATURED
API-based external communications * Experience supporting and developing web applications and API endpoints.
API-based external communications * Experience supporting and developing web applications and API endpoints.
Core Tech: Node.js, API Integration, Microservices, Microsoft Azure Cloud - Drive a culture of technical pride, ensuring robust API design, secure cloud deployment practices, and insightful code reviews. You will be equally comfortable discussing API design with frontend and mobile engineers as you are discussing business value and roadmap priorities with Senior Executives (C-suite/CxO level) to help them achieve their business ambitions.
Core Tech: Node.js, API Integration, Microservices, Microsoft Azure Cloud - Drive a culture of technical pride, ensuring robust API design, secure cloud deployment practices, and insightful code reviews. You will be equally comfortable discussing API design with frontend and mobile engineers as you are discussing business value and roadmap priorities with Senior Executives (C-suite/CxO level) to help them achieve their business ambitions.
API integration or data engineering background
API integration or data engineering background
Were entering an exciting phase of modernisation and transformation , opening up our longstanding platforms through API-driven services , cloud technologies and new digital channels. * REST API design and SOAP services
Were entering an exciting phase of modernisation and transformation , opening up our longstanding platforms through API-driven services , cloud technologies and new digital channels. * REST API design and SOAP services
Working closely with the engineering and integration support teams along with communicating externally with Dexory's customers, you will develop custom parsers, API integrations, and data transformation logic to enable our robots to understand each customer's unique warehouse management system. * Building custom API integrations to retrieve real-time data from customer warehouse management systems;
Working closely with the engineering and integration support teams along with communicating externally with Dexory's customers, you will develop custom parsers, API integrations, and data transformation logic to enable our robots to understand each customer's unique warehouse management system. * Building custom API integrations to retrieve real-time data from customer warehouse management systems;
We are proud of our market leading integrations estate, and our Open API capabilities, and continue to build on these with our * Open API for customers, ecosystem partners and Advice firms * Propose and lead on business and partnership models (license, tiered API, embedded UX, or per-event pricing)
We are proud of our market leading integrations estate, and our Open API capabilities, and continue to build on these with our * Open API for customers, ecosystem partners and Advice firms * Propose and lead on business and partnership models (license, tiered API, embedded UX, or per-event pricing)
API integration (e.g. MuleSoft)
API integration (e.g. MuleSoft)
Proficient in Go and/or Python and experienced with modern observability tooling; bonus points for containers/IoT OS, ACL-as-code patterns, and carrier/router API integrations.
Proficient in Go and/or Python and experienced with modern observability tooling; bonus points for containers/IoT OS, ACL-as-code patterns, and carrier/router API integrations.
Related Jobs
Locations
- Ferndale
- Harwell
- Heathcote
- Shipton-Under-Wychwood
- Silverstone
- Bristol
- Birmingham
- Oxford
- Cardiff
- Reading
- Swindon
- Warwick
- Cheltenham
- Gloucester
- Chipping Norton
- Avon
- Oxfordshire
- West Midlands
- Gloucestershire
- South Glamorgan
- Wiltshire
- Berkshire
- Warwickshire
- Northamptonshire
- South West
- Midlands
- South East
- Wales
- East Midlands