7 of 7 Contract API Development Jobs in London

C# .NET Developer

Hiring Organisation
Pontoon
Location
Bromley, London, South Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £750/day Inside IR35
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 ...

C# .NET Developer

Hiring Organisation
Pontoon
Location
Bromley, Kent, England, United Kingdom
Employment Type
Contractor
Contract Rate
£650 - £750 per day
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 ...

Full Stack Software Engineer

Hiring Organisation
Brio Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 550 Daily
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 ...

Full Stack Software Engineer

Hiring Organisation
Brio Digital
Location
London, Baker Street, United Kingdom
Employment Type
Contract
Contract Rate
£550/day
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 ...

SC Cleared Node.js Developer

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Up to £560 per day + Inside IR-35
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 ...

Scala Developer

Hiring Organisation
Lucid Support Services Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
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 ...

AI Engineer (SC Cleared)

Hiring Organisation
Morgan Hunt Recruitment
Location
City of London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £800 per day
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 ...