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        2 API jobs in City of London + 20 miles

        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
        FEATURED

        3 exact matches jobs are outside your preferred location

        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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        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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        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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        Lead, Software & Platform Engineering We are seeking an experienced Lead Product Engineer to join our team in London. Technical leadership: Guide and mentor the engineering team, making key technical decisions and providing a strategic framework and detailed technical guidance covering architectural patterns, tactical design patterns, best practices, and a clear implementation process. Product development: Lead the technology assessment for new products/features, influencing design decisions to manage risks and develop mitigation plans. Lead AI integration: Work with leadership to implement the company's long-term AI strategy, identifying practical use cases for AI and translating product goals into actionable technical tasks. Lead the design, development, and deployment of AI-enhanced software solutions and oversee the integration of AI capabilities into products and workflows.
        Lead, Software & Platform Engineering We are seeking an experienced Lead Product Engineer to join our team in London. Technical leadership: Guide and mentor the engineering team, making key technical decisions and providing a strategic framework and detailed technical guidance covering architectural patterns, tactical design patterns, best practices, and a clear implementation process. Product development: Lead the technology assessment for new products/features, influencing design decisions to manage risks and develop mitigation plans. Lead AI integration: Work with leadership to implement the company's long-term AI strategy, identifying practical use cases for AI and translating product goals into actionable technical tasks. Lead the design, development, and deployment of AI-enhanced software solutions and oversee the integration of AI capabilities into products and workflows.
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        The successful candidate for the Engineer, Post Trade role, will be working with the Director Technical Delivery Solution and Delivery, will form part of a team building a complex, ground-up cloud-based critical market infrastructure service in a bold new venture for LSEG. Role Profile - This opening requires a candidate who takes great pride in delivering excellence with excellent logical and technical skills and a can-do attitude combined with a helpful mentality, and a wish to play a critical role in forming and growing a new business. Key Responsibilities - A strong focus on engineering excellence and coding, adopting an open and hands-on approach to problem-solving and delivery. Engage deeply in technical design and implementation to ensure solutions are robust, scalable, and aligned with industry standards.
        The successful candidate for the Engineer, Post Trade role, will be working with the Director Technical Delivery Solution and Delivery, will form part of a team building a complex, ground-up cloud-based critical market infrastructure service in a bold new venture for LSEG. Role Profile - This opening requires a candidate who takes great pride in delivering excellence with excellent logical and technical skills and a can-do attitude combined with a helpful mentality, and a wish to play a critical role in forming and growing a new business. Key Responsibilities - A strong focus on engineering excellence and coding, adopting an open and hands-on approach to problem-solving and delivery. Engage deeply in technical design and implementation to ensure solutions are robust, scalable, and aligned with industry standards.
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        The Senior lead Scala Engineer will play a key role in the engineering and delivery of a critical market-infrastructure service within the Equities platform, with a strong focus on AWS cloud-native development. Reporting directly to the Senior Technical Delivery Engineer, Post Trade, the successful candidate will be responsible for designing, implementing, and maintaining performant, resilient, and scalable backend services built predominantly in Scala. As a senior member of the engineering team, this individual will help shape technical direction, contribute to best-in-class engineering standards, and actively support the continued growth and evolution of the business. Advanced Scala programming * Proven experience delivering enterprise-grade Scala applications in production environments, with a focus on quality, resilience, performance, and observability. Role Profile
        The Senior lead Scala Engineer will play a key role in the engineering and delivery of a critical market-infrastructure service within the Equities platform, with a strong focus on AWS cloud-native development. Reporting directly to the Senior Technical Delivery Engineer, Post Trade, the successful candidate will be responsible for designing, implementing, and maintaining performant, resilient, and scalable backend services built predominantly in Scala. As a senior member of the engineering team, this individual will help shape technical direction, contribute to best-in-class engineering standards, and actively support the continued growth and evolution of the business. Advanced Scala programming * Proven experience delivering enterprise-grade Scala applications in production environments, with a focus on quality, resilience, performance, and observability. Role Profile
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        Senior Founding Engineer

        Corecom Consulting
        London
        £80000 - £120000 per annum + equity + package
        Founding Engineer (EnergyTech / AI) Engineers here take ownership of problems end-to-end, from shaping early ideas through to delivering production features used by customers. * Experience as a Full-Stack Engineer building production systems Engineers who thrive here tend to enjoy working close to the problem, communicating clearly across technical and non-technical teams, and taking initiative rather than waiting for direction. London | Hybrid (3 days onsite) | £70k-£120k + Equity - A venture-backed EnergyTech start-up is building a new type of power company designed for the electrified future. As renewable energy adoption accelerates, the challenge is no longer just generating power, but storing, managing, and intelligently dispatching it. This team is developing software that sits at the centre of that transition, enabling a new generation of energy suppliers built around flexibility, storage, and ...
        Founding Engineer (EnergyTech / AI) Engineers here take ownership of problems end-to-end, from shaping early ideas through to delivering production features used by customers. * Experience as a Full-Stack Engineer building production systems Engineers who thrive here tend to enjoy working close to the problem, communicating clearly across technical and non-technical teams, and taking initiative rather than waiting for direction. London | Hybrid (3 days onsite) | £70k-£120k + Equity - A venture-backed EnergyTech start-up is building a new type of power company designed for the electrified future. As renewable energy adoption accelerates, the challenge is no longer just generating power, but storing, managing, and intelligently dispatching it. This team is developing software that sits at the centre of that transition, enabling a new generation of energy suppliers built around flexibility, storage, and ...
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        Engineering Technical Lead

        EVOLVE IN RECRUITMENT LTD
        Manchester, Greater Manchester, M2 3BB
        From £60,000 to £97,000 per annum
        Job Title: Technical Lead / Staff Software Engineer//Engineering Lead/Technical Director/Chief Engineer - You have the option to progress with us on a technical career track. * Experience in managing and technically leading a software engineering team * Expertise in modern engineering standards such as TDD, contract testing, and secure coding, as well as architectural patterns like event-driven architecture and platform migration. * Experience providing technical subject matter expertise to shape bids and client proposals. Can present proposed approaches and discuss technical implementation with prospective clients during the sales process - Salary: £63,000 - £103,000 - Location: Manchester - Our client is seeking enthusiastic and proactive individuals to join their growing team. Working in a busy but dynamic environment, you will Join our clients Digital & Data team working alongside product, design and a ...
        Job Title: Technical Lead / Staff Software Engineer//Engineering Lead/Technical Director/Chief Engineer - You have the option to progress with us on a technical career track. * Experience in managing and technically leading a software engineering team * Expertise in modern engineering standards such as TDD, contract testing, and secure coding, as well as architectural patterns like event-driven architecture and platform migration. * Experience providing technical subject matter expertise to shape bids and client proposals. Can present proposed approaches and discuss technical implementation with prospective clients during the sales process - Salary: £63,000 - £103,000 - Location: Manchester - Our client is seeking enthusiastic and proactive individuals to join their growing team. Working in a busy but dynamic environment, you will Join our clients Digital & Data team working alongside product, design and a ...
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        Job Title:Senior Engineer o Mentor and coach other engineers * Location: London * Days in the Office:2 days per week - o Work embedded in a cross-functional team with software developers, technical product owners and testers all working together towards common goals to develop JVM applications using Test Driven Development and Pair Programming - o Drive the design and implementation of our systems, knowing the context and why we are implementing what we are implementing, whilst always looking to improve our systems and ways of working - o A willingness to pair program - o Strong verbal communication and collaboration skills - o In-depth knowledge and hands-on experience in a cross-functional, agile development team - o Enthusiasm for code development and education in this area - o Experience in pair programming - o Proficiency in idiomatic Kotlin for application development
        Job Title:Senior Engineer o Mentor and coach other engineers * Location: London * Days in the Office:2 days per week - o Work embedded in a cross-functional team with software developers, technical product owners and testers all working together towards common goals to develop JVM applications using Test Driven Development and Pair Programming - o Drive the design and implementation of our systems, knowing the context and why we are implementing what we are implementing, whilst always looking to improve our systems and ways of working - o A willingness to pair program - o Strong verbal communication and collaboration skills - o In-depth knowledge and hands-on experience in a cross-functional, agile development team - o Enthusiasm for code development and education in this area - o Experience in pair programming - o Proficiency in idiomatic Kotlin for application development
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        What is the average salary for API in City of London?

        Average salary per year
        £82,499

        The average salary for a API in City of London is £82,499. API in City of London salaries range from £64,999 to £92,499.

        Frequently Asked Questions

        How many API jobs are there in City of London?
        There are 2 API jobs within 20 miles of City of London available on JustEngineers right now.

        What other similar jobs are there to API jobs in City of London?
        As well as API jobs in City of London, you can find Engineering, Management, Software Development, amongst many others.