15 of 15 Contract API Development Jobs in England

where needed. Be capable of designing, building and delivering an in-house solution end to end from shaping the initial idea and requirements, through development, testing and ongoing support. Coach and uplift the team in development best practice: clean code, test driven development, secure coding, and maintainable … leadership). Proven ability to refine and decompose work (features into implementable stories), manage dependencies, and remove technical blockers. Strong experience in microservices and API development, and asynchronous messaging technologies such as Kafka or similar event-driven platforms. Experience in at least two or three of the following ...

government client. As a Senior Developer, you will bring strong hands-on experience across both .NET and Python, contributing to cloud-native API development, Legacy modernisation, and DevSecOps practices - all within a Microsoft Azure environment and aligned to the highest engineering and security standards. Key Responsibilities Design, develop … maintain full-stack applications and services using .NET Core and Python. Build and consume RESTful APIs following API-first and microservices design principles. Contribute to CI/CD pipelines in Azure DevOps - build, test, and deployment automation. Apply DevSecOps practices including SAST/DAST scanning, dependency management, and environment ...

critical business applications built on modern Microsoft technologies, including .NET 6 and .NET 8. The successful candidate will work within a globally distributed development team, collaborating with both technical and business stakeholders across the UK (London, Bromley, Camberley) and internationally (Singapore, India, New York, and Chicago). The role … stability, performance, and scalability. Work closely with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute ...

critical business applications built on modern Microsoft technologies, including .NET 6 and .NET 8. The successful candidate will work within a globally distributed development team, collaborating with both technical and business stakeholders across the UK (London, Bromley, Camberley) and internationally (Singapore, India, New York, and Chicago). The role … stability, performance, and scalability. Work closely with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute ...

ifndautoparts is a family-owned and founder-led company. We operate with a lean, highly collaborative structure and work closely with specialist contractors and development partners to deliver projects and scale the platform. As we expand our business seller network, we are looking for an experienced Senior Integration Engineer … helping business sellers connect and synchronise their inventory with the ifndautoparts marketplace. You will work directly with the founders, onboarding team, and external development partners to help shape the future of seller integrations across the platform. The Role As our Senior Integration Engineer, you will be responsible for designing ...

maintainable code Working with shared/common government tech stacks (Node.js, PostgreSQL, Redis) Investigating and resolving technical issues across the stack Applying secure development practices, including OWASP principles and vulnerability management Collaborating with stakeholders and communicating technical concepts clearly Tech stack includes: Node.js, HAPI (web framework) API development … DevOps, Jenkins, GitHub Actions) Jira and Azure DevOps for workflow management What we're looking for: Active SC Clearance (essential) Strong experience with Node.js development in production environments Ability to communicate with both technical and non-technical stakeholders Experience breaking down work, refining backlog items, and defining acceptance criteria ...

Title: Python Developer - Onsite in Bristol 3x per week Job Description We are seeking a talented Python Developer with strong experience in backend development and API design using FastAPI. This role involves working with Pydantic for schema validation and SQLite for lightweight relational data storage, requiring an ability … maintainable, and well-tested code. Optimise application performance, scalability, and reliability. Troubleshoot production issues and support root cause analysis. Conduct code reviews and enforce development standards. Essential Skills Strong experience with backend development using Python. API design and development using FastAPI. experience with Pydantic for schema ...

automating and maintaining cloud environments. Extensive experience building and optimising CI/CD pipelines, enabling automated build, test and deployment processes. Solid understanding of API development, integration and management, including RESTful services and microservice architectures. Commercial experience developing applications using .NET and/or JavaScript, with the ability ...

using trusted data sources Creating, testing and refining prompts, workflows and AI configurations to maximise accuracy and performance Applying solid software engineering practices including API development, version control, CI/CD and automated testing Monitoring and optimising AI systems in production, ensuring performance, cost control, security and compliance ...

critical business applications built on modern Microsoft technologies, including .NET 6 and .NET 8. The successful candidate will work within a globally distributed development team, collaborating with both technical and business stakeholders across the UK (London, Bromley, Camberley) and internationally (Singapore, India, New York, and Chicago). The role … stability, performance, and scalability. Work closely with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute ...

Back End services Maintain high code quality through testing, reviews and best practices Mentor junior developers where required Required Skills Strong Core Python development experience Experience with enterprise trading and risk platforms (eg Quartz, SecDB, Athena, Kanon, Beacon or similar) Strong SQL and large-scale data handling expertise Pandas … NumPy for data processing and analytics REST API development using Flask, FastAPI or Django Strong understanding of performance optimisation and scalable systems Unix/Linux and Shell Scripting experience Domain Experience Investment Banking or Capital Markets background Experience across Market Risk, CCR, PnL, Trade Lifecycle and Reconciliations Knowledge ...

designing and maintaining an Integration Services Platform between our Business applications and our clients and clients supply chain systems, responsible for designing Web Based API solutions and middleware using Service Orientated Architecture with .NET to facilitate managed data flows between different organisations in a secure environment. Responsibilities Working with … Solution Technical Lead, API Developer will be directly responsible for all temporary and enduring technical documentation required to develop, test and handover APIs to BAU support; API Developer may be required to contribute toward more detailed solution designs for the wider platform. will be required to work alongside ...

.Net API Developer - 3 days per week in Skipton - Circa £450 per day Inside ir35 - 3 months My client is a global leading consultancy. They are on the hunt for a .NET Developer to join a financial client of theirs. Responsibilities: Maintained and enhanced legacy .NET applications (ASP.NET, .NET … application modernisation initiatives by refactoring legacy components, improving code quality, and contributing to migration planning for newer .NET technologies and architectures. Skills: .NET Integration Development Test automation .Net API Developer - 3 days per week in Skipton - Circa £450 per day Inside ir35 - 3 months Damia Group Limited acts ...

Title: Python Fast API Developer - Onsite in Bristol 2/3 days per week Job Description This role focuses on designing and developing robust Python-based backend applications and services, with a strong emphasis on REST API design and implementation using FastAPI. You will work with Pydantic … quality, maintainable, and well-tested code. The position requires close collaboration with a diverse team to deliver scalable, reliable solutions and to continuously improve development and release processes. Responsibilities Design and develop Python-based applications and backend services. Build, document, and maintain REST APIs using FastAPI, ensuring secure ...

.Net API Developer - 3 days per week in Skipton - Circa £450 per day Inside ir35 - 3 months My client is a global leading consultancy. They are on the hunt for a .NET Developer to join a financial client of theirs. Responsibilities: Maintained and enhanced legacy click apply for full ...