22 of 22 Contract API Development Jobs in England

core banking platform. This is a hands-on contract role where around 90% of your workload will focus on .NET and REST API development , making it ideal for someone who enjoys building robust backend services at scale whilst remaining comfortable working across the full stack. … .NET/C# . This role requires an experienced pair of hands who is comfortable systematically creating and maintaining a large number of API endpoints whilst ensuring code quality, automation and operational readiness throughout the development lifecycle. The engineering team works using Scrum, while the wider programme follows ...

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 ...

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 ...

within an agile delivery team, building and enhancing modern, cloud-native applications used by thousands of end users. This role requires strong full-stack development expertise across .NET, Vue.js and Azure, alongside previous experience delivering solutions within Government, NHS, or wider public sector environments. Key Responsibilities Design, develop … security, performance and compliance standards Essential Skills & Experience Strong commercial experience with: C#/.NET Core/.NET 6+ Vue.js JavaScript/TypeScript REST API development and integration SQL Server and relational databases Hands-on experience with Microsoft Azure, including services such as: App Services Azure Functions Azure ...

within an agile delivery team, building and enhancing modern, cloud-native applications used by thousands of end users. This role requires strong full-stack development expertise across .NET, Vue.js and Azure, alongside previous experience delivering solutions within Government, NHS, or wider public sector environments. Key Responsibilities Design, develop … security, performance and compliance standards Essential Skills & Experience Strong commercial experience with: C#/.NET Core/.NET 6+ Vue.js JavaScript/TypeScript REST API development and integration SQL Server and relational databases Hands-on experience with Microsoft Azure, including services such as: App Services Azure Functions Azure ...

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 ...

Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a Amazon Connect Engineer/Lead Developer … center solutions * Build and manage contact flows, IVR, routing strategies, queues, and agent experiences (CCP/UI) * Develop Back End integrations using AWS Lambda, API Gateway, DynamoDB, S3, Kinesis, & REST APIs * Implement AI/ML driven automation using Amazon Lex, Contact Lens, Transcribe, Kendra services * Support CI/ ...

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 ...

Amazon Connect-based omnichannel contact centre solutions including contact flows, IVR, routing strategies, queues, and agent experiences Develop Back End integrations using AWS Lambda, API Gateway, DynamoDB, S3, Kinesis, and REST APIs Implement AI/ML-driven automation using Amazon Lex, Contact Lens, Transcribe, and Kendra Support CI/… What You Will Ideally Bring: Strong hands-on Amazon Connect experience - contact flows, routing, and integrations - essential Proven experience with core AWS services: Lambda, API Gateway, DynamoDB, CloudWatch, and S3 Proficiency in Node.js, Python, or JavaScript with REST API development experience Solid understanding of contact centre technologies ...

contact center solutions Build and manage contact flows, IVR, routing strategies, queues, and agent experiences (CCP/UI) Develop backend integrations using AWS Lambda, API Gateway, DynamoDB, S3, Kinesis, & REST APIs Implement AI/ML-driven automation using Amazon Lex, Contact Lens, Transcribe, Kendra services Support CI/… consulting support Essential skills/knowledge/experience: Strong hands-on experience with Amazon Connect (flows, routing, integrations) Proven experience with AWS services: Lambda, API Gateway, DynamoDB, CloudWatch, S3 Proficiency in Node.js/Python/JavaScript and REST API development Solid understanding of contact center technologies ...

contract basis. This is an excellent opportunity for a contractor who is available immediately and can hit the ground running on Business Central development, customisation and integration work. Key Skills & Experience Strong Microsoft Dynamics 365 Business Central/NAV development experience Expert-level AL development skills Experience … building and deploying extensions API development and third-party integrations Business Central customisation and configuration Ability to work independently and deliver in a fast-moving environment Requirements Must be based in the UK Able to attend either the Harlow or London office when required Available to start immediately ...

working (two consecutive days per month onsite in Newcastle) Rate: Inside IR35 We are seeking a skilled Scala Developer to support and complete an API build as soon as possible, contributing to the development and implementation of key services. Responsibilities Develop and implement Front End and Back … with cross-functional teams to design, develop, and test applications meeting business requirements. Ensure best practices in code quality, testing, and deployment throughout the development life cycle. Participate in architectural discussions and contribute to technical decisions. Conduct code reviews and provide constructive feedback. Communicate effectively with stakeholders, translating technical ...

deliver continuous improvements. Contribute to AI-powered functionality, including LLM integrations, Retrieval-Augmented Generation (RAG) and document processing workflows. Support the full software development life cycle from requirements through to deployment and ongoing support. Required Skills: Degree in Computer Science, Engineering, Mathematics or similar. Experience in enterprise software development experience. Experience in commercial Ruby on Rails development. Proven API development experience. Experience with BDD/TDD methodologies. Knowledge of Kubernetes, PostgreSQL, Git and UNIX/Linux environments. Experience with AI-enabled software development or LLM integration is highly desirable. If you are interested in this ...

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 ...

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 ...

technical audiences Support adoption and continual improvement of automation best practices Essential Skills & Experience Strong knowledge of JavaScript (particularly for rules engine API development) Understanding of SQL for database queries Experience working with JSON data structures Rudimentary knowledge of Java , particularly for data type definitions within ODM tools ...

initial 6 month contract. The selected candidate MUST HAVE CQRS experience and event-driven-architecture. Acts as the technical lead for backend development within a pod, specialising in event-driven architecture and CQRS-based systems. Core Skills:CQRS (non-negotiable), Event Sourcing, .NET/Java/Python, Azure Service … API Development, Distributed Systems Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist talent acquisition and management consultancy. We provide technical contingency recruitment and a portfolio of more ...

.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 ...