Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
Locations
- The City, City (EC4)
- Southwark
- Hinxton
- The City, City (EC3)
- The City, City (EC2)
- Arundel Heights
- Bellfields
- Bloomsbury
- Causeway
- Covent Garden
- City of London
- Cambridge
- Central London
- West End
- Milton Keynes
- South East London
- Reading
- North West London
- South West London
- Stevenage
- London
- Cambridgeshire
- Berkshire
- Buckinghamshire
- Hertfordshire
- Surrey
- Essex
- Oxfordshire
- West Sussex
- Bedfordshire
- South East
- East Anglia
- East Midlands
- Midlands
)
C# Developer .Net SQL API
C# Developer .Net SQL API
Client Server
The City, City of London (EC4), EC4R
£75000 - £90000 per annum + benefits
C# Developer / Software Engineer (C# .Net SQL API) London onsite to £90k - There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Apply now to find out more about this C# Developer / Software Engineer (C# .Net SQL API) opportunity.
C# Developer / Software Engineer (C# .Net SQL API) London onsite to £90k - There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Apply now to find out more about this C# Developer / Software Engineer (C# .Net SQL API) opportunity.
PREMIUM
Senior Backend Engineer TypeScript Node API
Senior Backend Engineer TypeScript Node API
Client Server
The City, City of London (EC4), EC2V
£85000 - £100000 per annum + shares + benefits
Senior Backend Engineer / Developer (TypeScript Node API) London / WFH to £100k
Senior Backend Engineer / Developer (TypeScript Node API) London / WFH to £100k
PREMIUM
C++ Developer MacOS API
C++ Developer MacOS API
Client Server
The City, City of London (EC4), EC2V
£65000 - £80000 per annum + benefits
As a C++ Developer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and API integrations.
As a C++ Developer you will focus on enabling the core product, written in C / C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and API integrations.
PREMIUM
)
API-first and integration platforms
API-first and integration platforms
)
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)
PREMIUM
)
Tech Lead – Azure / .NET
Tech Lead – Azure / .NET
ARC IT Recruitment Ltd
The City, City of London (EC4), EC4N
Up to £100,000 per annum c.20% bonus + excellent benefits
This role sits within a core backend and API-focused team responsible for internal platforms that directly support commercial operations. * Act as the technical lead for a backend/API team supporting real-time, high-availability systems * Strong commercial experience with C# and .NET in backend, API-driven systems
This role sits within a core backend and API-focused team responsible for internal platforms that directly support commercial operations. * Act as the technical lead for a backend/API team supporting real-time, high-availability systems * Strong commercial experience with C# and .NET in backend, API-driven systems
RESTful API design and implementation expertise
RESTful API design and implementation expertise
)
Software Engineer in Test (Java)
Software Engineer in Test (Java)
Understanding Recruitment
The City, City of London (EC2), EC2M 7PY
£70000 - £90000 per annum + bonus, hybrid, benefits
Strong experience with Java automation testing, API & backend testing.
Strong experience with Java automation testing, API & backend testing.
NEWFEATURED
)
Martech Product Owner (iGaming)
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.
)
Senior/Lead Full Stack Developer (React / Python) AI Start up!
Senior/Lead Full Stack Developer (React / Python) AI Start up!
Robert Half
City of London (EC1)
Negotiable
API & database experience
API & database experience
)
Skilled in building robust, optimized API endpoints.
Skilled in building robust, optimized API endpoints.
)
Director of Technology Architecture and Data
Director of Technology Architecture and Data
Henderson Scott
North West London, London, NW1 7AW
£125000 - £135000 per annum + Hybrid, 30 Days AL,
Oversee cloud architecture (primarily Microsoft Azure), integration patterns, and API frameworks. * API management, data architecture, integration patterns
Oversee cloud architecture (primarily Microsoft Azure), integration patterns, and API frameworks. * API management, data architecture, integration patterns
FEATURED
)
Applications Support Analyst / Engineer
Applications Support Analyst / Engineer
Kudos Partners
Datchet Common, Slough (SL3), SL3
£75,000 per annum plus 12% bonus - generous benefits package
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
)
Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
)
Data Engineer
Data Engineer
McGregor Boyall Associates Limited
Turnham Green, West London (W4), W4 1SY
£30000 - £35000 per annum
Develop API integrations to connect multiple business systems
Develop API integrations to connect multiple business systems
)
Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
Design and implement Service-Oriented Architecture, API gateways, and scalable integration strategies. * Expert in JavaScript, API protocols, message queuing, and synchronising data across POS, WMS, CRM, and loyalty systems.
)
Senior Automated & Manual Tester – Mobile, Playwright, C#, SQL, Azure
Senior Automated & Manual Tester – Mobile, Playwright, C#, SQL, Azure
Smart Sourcer Limited
City of London (EC1)
From £70,000 to £75,000 per annum + 10% bonus + excellent benefits
Hands-on experience with Playwright or similar automation tools (e.g. Selenium) with extensive experience enhancing automated test frameworks for UI & API testing * Maintaining and enhancing UI/API test frameworks (e.g., Selenium, Playwright)
Hands-on experience with Playwright or similar automation tools (e.g. Selenium) with extensive experience enhancing automated test frameworks for UI & API testing * Maintaining and enhancing UI/API test frameworks (e.g., Selenium, Playwright)
NEW
)
A solid understanding of integration patterns and API connections.
A solid understanding of integration patterns and API connections.
)
Strong understanding of API integrations, RESTful services, and event streaming.
Strong understanding of API integrations, RESTful services, and event streaming.
)
Front Office Developer - Technical Team Lead
Front Office Developer - Technical Team Lead
CMC Markets UK Plc
The City, City of London (EC3), EC3A 7BX
Competitive Salary + Bonus, Pension, Private Health, Life Assurance
Proven experience designing and developing API-based, microservices-driven architectures.
Proven experience designing and developing API-based, microservices-driven architectures.
FEATURED
Solutions Consultant – Integrations
Solutions Consultant – Integrations
ARC IT Recruitment Ltd
West End, Central London (W1), W1G
£competitive + Bonus + Excellent Benefits
Familiar with setting up API connections, mapping data and managing transformation rules.
Familiar with setting up API connections, mapping data and managing transformation rules.
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.
Senior Full Stack Engineer React TypeScript
Senior Full Stack Engineer React TypeScript
Client Server
The City, City of London (EC4), EC2V
£80000 - £90000 per annum + benefits
You have strong React and Redux front end skills combined with backend JavaScript, TypeScript, Node.js and API experience
You have strong React and Redux front end skills combined with backend JavaScript, TypeScript, Node.js and API experience
PREMIUM
)
Data Engineer (Football Club)
Data Engineer (Football Club)
Singular Recruitment
Central London (W1)
From £50,000 to £70,000 per annum
API Development:Experience building data-centric APIs, especially withFastAPIon serverless platforms likeGoogle App Engine.
API Development:Experience building data-centric APIs, especially withFastAPIon serverless platforms likeGoogle App Engine.
FEATURED
Define and implement application security standards including threat modelling, secure SDLC, API security and DevSecOps practices
Define and implement application security standards including threat modelling, secure SDLC, API security and DevSecOps practices
PREMIUM
Related Jobs
Locations
- The City, City (EC4)
- Southwark
- Hinxton
- The City, City (EC3)
- The City, City (EC2)
- Arundel Heights
- Bellfields
- Bloomsbury
- Causeway
- Covent Garden
- City of London
- Cambridge
- Central London
- West End
- Milton Keynes
- South East London
- Reading
- North West London
- South West London
- Stevenage
- London
- Cambridgeshire
- Berkshire
- Buckinghamshire
- Hertfordshire
- Surrey
- Essex
- Oxfordshire
- West Sussex
- Bedfordshire
- South East
- East Anglia
- East Midlands
- Midlands