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3 Contract API jobs in South East + 20 miles
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Lead React Native Engineer / Engineering manager
Lead React Native Engineer / Engineering manager
Sanderson Recruitment
City of London (EC1), EC1
£600 - £700 per day + Outside IR35
Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns
Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns
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Our client is seeking a contract Threat Detection Engineer to support the ongoing delivery of detection engineering activities within a busy SOC environment. This role is centred on hands-on engineering and execution, ensuring detection content, automations, and integrations are delivered effectively and aligned to operational priorities. Working closely with threat hunting and SOC teams, you will translate detection requirements into practical outcomes, contributing directly to sprint-based delivery and continuous service improvement. This is a highly technical role suited to someone who enjoys building, tuning, and optimising detection capabilities across modern security platforms. Key Responsibilities * Develop and deliver detection content in line with sprint priorities and operational requirements
Our client is seeking a contract Threat Detection Engineer to support the ongoing delivery of detection engineering activities within a busy SOC environment. This role is centred on hands-on engineering and execution, ensuring detection content, automations, and integrations are delivered effectively and aligned to operational priorities. Working closely with threat hunting and SOC teams, you will translate detection requirements into practical outcomes, contributing directly to sprint-based delivery and continuous service improvement. This is a highly technical role suited to someone who enjoys building, tuning, and optimising detection capabilities across modern security platforms. Key Responsibilities * Develop and deliver detection content in line with sprint priorities and operational requirements
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Head of Quality Engineering
Head of Quality Engineering
Infoplus Technologies UK Ltd
City of London (EC3M)
From £650 to £700 per day
API Automation (REST Assured, Karate, Postman)
API Automation (REST Assured, Karate, Postman)
2 exact matches jobs are outside your preferred location
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Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
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Senior GraphQL Engineer (Federation) TypeScript | Node.js | Kubernetes
Senior GraphQL Engineer (Federation) TypeScript | Node.js | Kubernetes
Staffworx Limited
UK
MARKET RATES, OUTSIDE IR35, hybrid, 2 days on site week
Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability. * Strong commercial experience delivering Federated GraphQL in production (schema-first design, supergraph/subgraph architecture, resolvers, schema governance, and API evolution). * Testing experience with modern frameworks such as Vitest and Playwright (API + end-to-end).
Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability. * Strong commercial experience delivering Federated GraphQL in production (schema-first design, supergraph/subgraph architecture, resolvers, schema governance, and API evolution). * Testing experience with modern frameworks such as Vitest and Playwright (API + end-to-end).
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Technical Team Lead, Software Engineering Manager
Technical Team Lead, Software Engineering Manager
Aspire
London
£90000 - £110000 per annum + Great Benefits
Our client, a fast-scaling, well-funded technology company is looking for a hands-on Technical Team Lead to drive the engineering evolution of a platform used by some of the UK's best-known brands. As the Technical Team Lead, you'll combine 60% hands-on coding with strong technical leadership. This is a rare opportunity to influence the technical strategy for a major platform migration to something new and fantastic, lead a growing engineering team, work with modern technologies, and step into a leadership role with a clear progression path toward CTO as the company scales. * Proven ability to lead engineering teams or mentor developers - If you're excited by building high-quality software at scale, leading talented engineers, and owning major technical decisions this one's for you. You'll guide a team of engineers, shape engineering standards, and work ...
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Engineering Technical Lead
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From £60,000 to £97,000 per annum
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C++ Lead / Engineering Manager - Systematic Trading
C++ Lead / Engineering Manager - Systematic Trading
McGregor Boyall Associates Limited
City of London (EC1)
£150000 - £275000 per annum
A leading systematic trading environment is looking to hire a hands-on C++ Engineering Manager to work on business-critical trading systems in a live market environment. This role is suited to someone operating at lead or manager level who still enjoys being close to the code. * Lead the design and development of core trading and execution systems in modern C++ * Strong hands-on C++ engineering experience in Linux-based trading environments - Location: London or Amsterdam - Industry: Systematic Trading / Hedge Funds - Work model: Hybrid - The focus is on building and improving low-latency, production trading systems across systematic trading, automated trading, and execution. You will work closely with traders, quants, and engineers to deliver robust technology with direct impact on trading performance. * Build and enhance low-latency infrastructure used across systematic trading and execution
A leading systematic trading environment is looking to hire a hands-on C++ Engineering Manager to work on business-critical trading systems in a live market environment. This role is suited to someone operating at lead or manager level who still enjoys being close to the code. * Lead the design and development of core trading and execution systems in modern C++ * Strong hands-on C++ engineering experience in Linux-based trading environments - Location: London or Amsterdam - Industry: Systematic Trading / Hedge Funds - Work model: Hybrid - The focus is on building and improving low-latency, production trading systems across systematic trading, automated trading, and execution. You will work closely with traders, quants, and engineers to deliver robust technology with direct impact on trading performance. * Build and enhance low-latency infrastructure used across systematic trading and execution
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