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        116 Permanent API jobs in City of London + 20 miles

        Client Server

        Full Stack Engineer TypeScript API React

        Client Server
        Shoreditch, East London (E1), EC2A
        £50000 - £60000 per annum + benefits
        Full Stack Engineer / Developer (TypeScript API React) London / WFH to £60k - Apply now to find out more about this Full Stack Engineer / Developer (TypeScript API React) opportunity.
        Full Stack Engineer / Developer (TypeScript API React) London / WFH to £60k - Apply now to find out more about this Full Stack Engineer / Developer (TypeScript API React) opportunity.
        more
        NEWPREMIUM
        The Curve Group

        Integration Architect

        The Curve Group
        City of London (EC4R), EC4R 3AB
        Negotiable
        This role is ideal for someone who specialises in system integration, API design, and cloud-based architecture (Azure) and enjoys shaping strategy as well as guiding delivery teams. * Design and govern API-led integrations, interface specifications, message schemas, and data flows. * Hands-on knowledge of Microsoft Azure integration services (API Management, Service Bus, Logic Apps, Event Grid, etc.) * Strong understanding of enterprise integration patterns, API management platforms (Apigee/Azure API Mgmt)
        This role is ideal for someone who specialises in system integration, API design, and cloud-based architecture (Azure) and enjoys shaping strategy as well as guiding delivery teams. * Design and govern API-led integrations, interface specifications, message schemas, and data flows. * Hands-on knowledge of Microsoft Azure integration services (API Management, Service Bus, Logic Apps, Event Grid, etc.) * Strong understanding of enterprise integration patterns, API management platforms (Apigee/Azure API Mgmt)
        more
        Anson Mccade

        QA - Lead Automation Architect

        Anson Mccade
        North West London (NW1)
        £85,000 - £110,000 Annual
        Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
        Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
        more
        PREMIUM
        Technically Gifted Ltd

        Martech Product Owner (iGaming)

        Technically Gifted Ltd
        City of London (EC1V)
        From £70,000 to £80,000 per annum
        Ensure scalable, resilient API integration between MarTech tools, the Bonus Engine, product systems, and data warehouses - Define and manage the Bonus Engine roadmap, evolving API capabilities and reward mechanics to support campaign efficiency and player engagement.
        Ensure scalable, resilient API integration between MarTech tools, the Bonus Engine, product systems, and data warehouses - Define and manage the Bonus Engine roadmap, evolving API capabilities and reward mechanics to support campaign efficiency and player engagement.
        more
        Smart Sourcer Limited

        Senior Identity & Access Management Engineer – Typescript, C#, AWS IAM

        Smart Sourcer Limited
        City of London (EC1)
        From £85,000 to £90,000 per annum + bonus + benefits
        Deliver secure login, SSO, MFA, RBAC/ABAC, and tenant isolation at scale, leveraging AWS services (Lambda, IAM, CloudFront, API Gateway, CDK) Solid AWS expertise (IAM, Lambda, API Gateway, CDK)
        Deliver secure login, SSO, MFA, RBAC/ABAC, and tenant isolation at scale, leveraging AWS services (Lambda, IAM, CloudFront, API Gateway, CDK) Solid AWS expertise (IAM, Lambda, API Gateway, CDK)
        more
        ARC IT Recruitment Ltd

        Lead Software Engineer – Azure / .NET

        ARC IT Recruitment Ltd
        South West London (SW1Y)
        £Competitive + 20% bonus + excellent benefits
        Azure, C#, .NET, API * Produce API documentation that adheres to OpenAPI 3.x standards. * Extensive experience in C#, .NET, SQL, and enterprise-grade API design.
        Azure, C#, .NET, API * Produce API documentation that adheres to OpenAPI 3.x standards. * Extensive experience in C#, .NET, SQL, and enterprise-grade API design.
        more
        Bilge Adam Technologies UK Ltd

        Software Architect

        Bilge Adam Technologies UK Ltd
        Central London (WC1)
        From £75,000 to £90,000 per annum
        Job description - Job Role: Software/Solution Architect - We are looking to hire an experienced Software Architect. What Youll Be Doing - Youll play a key role in shaping how modern software platforms are designed, integrated, and scaled. * Designing and defining end-to-end Software Architecture * Building scalable, modular, secure platforms * Guiding developers with best practices and architectural patterns * Leading integration between cloud services, APIs, and (at times) connectivity components like telematics or infotainment * Improving performance, security, and long-term maintainability * Collaborating closely with Product and operations teams. This is a role where your technical decisions genuinely shape the future of the product. Who Were Looking For - Someone who is having software architecture experience , thinks in systems, and enjoys working with both high
        Job description - Job Role: Software/Solution Architect - We are looking to hire an experienced Software Architect. What Youll Be Doing - Youll play a key role in shaping how modern software platforms are designed, integrated, and scaled. * Designing and defining end-to-end Software Architecture * Building scalable, modular, secure platforms * Guiding developers with best practices and architectural patterns * Leading integration between cloud services, APIs, and (at times) connectivity components like telematics or infotainment * Improving performance, security, and long-term maintainability * Collaborating closely with Product and operations teams. This is a role where your technical decisions genuinely shape the future of the product. Who Were Looking For - Someone who is having software architecture experience , thinks in systems, and enjoys working with both high
        more
        Loopla

        Full Stack Developer

        Loopla
        Euston, North West London (NW1), NW1 2RT
        Competitive
        Vitest/Jest, Docker, CI/CD (GitHub Actions), Shadcn/MUI, MongoDB, microservices, Cloudflare/CDNs, Firebase, Google Maps API, startup experience.
        Vitest/Jest, Docker, CI/CD (GitHub Actions), Shadcn/MUI, MongoDB, microservices, Cloudflare/CDNs, Firebase, Google Maps API, startup experience.
        more
        Smart Sourcer Limited

        Principal Full Stack Engineer – React, C#, AWS

        Smart Sourcer Limited
        City of London (EC1)
        Unspecified
        Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM) to deliver secure, event-driven systems. * Deep knowledge of API design, integration, and auth (OAuth2, JWT), with end-to-end performance focus.
        Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM) to deliver secure, event-driven systems. * Deep knowledge of API design, integration, and auth (OAuth2, JWT), with end-to-end performance focus.
        more
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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 permanent API jobs are there in City of London?
        There are 116 permanent API jobs within 20 miles of City of London available on CWJobs right now.
        What other similar jobs are there to permanent API jobs in City of London?
        As well as permanent API jobs in City of London, you can find permanent Qa Automation, Quality Assurance, QA Analyst, amongst many others.