Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
Locations
- London
- Central London
- North West London
- South East London
- North London
- East London
- Watford
- South East
- West London
- Southwark
- Dorking
- Southampton
- East Anglia
- Essex
- Bristol
- Brighton
- Hampshire
- Portsmouth
- High Wycombe
- Cambridge
- Glasgow
- Scotland
- Slough
- Devon
- Reading
- Cheltenham
- Surrey
- Birmingham
- Swindon
- Milton Keynes
- North East
- Newcastle Upon Tyne
- Uxbridge
- Leeds
- Yorkshire
- Guildford
- Leicester
- County Antrim
- Manchester
- Basildon
- West Midlands
- Bracknell
- Maidenhead
- Basingstoke
- Oxford
- East Midlands
46 Permanent API jobs in City of London + 20 miles
)
skilled with API development, message buses and languages such as C#, Python, or PHP
skilled with API development, message buses and languages such as C#, Python, or PHP
FEATURED
)
Integration Architect
Integration Architect
Lynx Recruitment Limited
SW1W, South West London
From £85,000 to £100,000 per annum
Create high-level architectural assets, including API catalogues, application and connectivity models, guiding detailed design - Solid understanding of SOA, REST, and API management principles - Proficient with XSD, XML, XSLT, JSON, API
Create high-level architectural assets, including API catalogues, application and connectivity models, guiding detailed design - Solid understanding of SOA, REST, and API management principles - Proficient with XSD, XML, XSLT, JSON, API
)
Strong experience with API and event-driven architectures.
Strong experience with API and event-driven architectures.
NEWFEATURED
)
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
)
Lead Java SDET
Lead Java SDET
Deerfoot Recruitment Solutions
The City, EC4N 6JD
£90000 - £120000 per annum + Benefits + Bonus + Hybrid Working
Lead SDET | SDET | Software Development Engineer in Test | Test Manager | Test Lead | Lead Test Engineer | Principal Test Engineer | QA Lead | Quality Assurance Lead | Software Test Lead | Automation Lead | Java | Unit Testing | Contract Testing | REST | API | Java OOP | API Testing | Cucumber | Selenium WebDriver | JSON | Performance Testing | Leadership
Lead SDET | SDET | Software Development Engineer in Test | Test Manager | Test Lead | Lead Test Engineer | Principal Test Engineer | QA Lead | Quality Assurance Lead | Software Test Lead | Automation Lead | Java | Unit Testing | Contract Testing | REST | API | Java OOP | API Testing | Cucumber | Selenium WebDriver | JSON | Performance Testing | Leadership
FEATURED
)
Build and maintain an API used by the product as well as external partners.
Build and maintain an API used by the product as well as external partners.
NEW
)
Exposure to GPU technology (Vulkan API, OpenGL, OpenCL, CUDA etc.,)
Exposure to GPU technology (Vulkan API, OpenGL, OpenCL, CUDA etc.,)
Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway
Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway
NEW
)
Senior/Lead Full Stack Developer (React / Python) AI Start up!
Senior/Lead Full Stack Developer (React / Python) AI Start up!
Robert Half
EC1, City of London
Negotiable
API & database experience
API & database experience
)
Senior Software Engineer
Senior Software Engineer
Halian Technology Limited
W1, Central London
From £90,000 to £95,000 per annum Plus bonus and benefits
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
NEW
Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
NEW
)
Senior Data Engineer
Senior Data Engineer
I3 Resourcing Limited
The City, EC3V 3ND
£70000 - £80000 per annum + + EXCELLENT BONUS + BENEFITS
Extensive experience in AWS services, e.g. EC2, S3, RDS, DynamoDB, Redshift, Lambda, API Gateway
Extensive experience in AWS services, e.g. EC2, S3, RDS, DynamoDB, Redshift, Lambda, API Gateway
)
Senior Node.js Developer
Senior Node.js Developer
ARC IT Recruitment Ltd
SW1V, South West London, SW1W 9SJ
Up to £100,000 per annum
Build and implement new API systems integrating with ferry operators, third-party service providers, and more.
Build and implement new API systems integrating with ferry operators, third-party service providers, and more.
)
Software Engineer C++ Mac Extensions EDR
Software Engineer C++ Mac Extensions EDR
Client Server
The City, EC4
£65000 - £80000 per annum + benefits
As a Software 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 Software 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.
NEWPREMIUM
)
Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
NEW
)
Forward Deployed Engineer
Forward Deployed Engineer
McGregor Boyall Associates Limited
EC1, City of London
£70000 - £90000 per annum
Strong data modelling, pipeline development, and API design experience.
Strong data modelling, pipeline development, and API design experience.
NEW
)
Strong foundation in web development, REST API design, and secure best practices
Strong foundation in web development, REST API design, and secure best practices
NEW
Client Roles - At Peregrine, were proud to be recruiting on behalf of our clients. We are recruiting an exciting opportunity for a Principal Design Architect, responsible for designing and assuring complex, high-impact solutions that align with enterprise architecture standards and strategic business objectives. A technology-led organisation working at the intersection of energy and digital infrastructure. They deliver secure, large-scale solutions that support national initiatives and enable innovation across the energy sector. The Principal Design Architect is a senior technical leader operating across multiple projects or domains, the role combines deep technical expertise with strong stakeholder engagement skills to shape architecture outcomes from concept to delivery. The Principal Solution Architect provides governance, coaching, and quality assurance for soluti
Client Roles - At Peregrine, were proud to be recruiting on behalf of our clients. We are recruiting an exciting opportunity for a Principal Design Architect, responsible for designing and assuring complex, high-impact solutions that align with enterprise architecture standards and strategic business objectives. A technology-led organisation working at the intersection of energy and digital infrastructure. They deliver secure, large-scale solutions that support national initiatives and enable innovation across the energy sector. The Principal Design Architect is a senior technical leader operating across multiple projects or domains, the role combines deep technical expertise with strong stakeholder engagement skills to shape architecture outcomes from concept to delivery. The Principal Solution Architect provides governance, coaching, and quality assurance for soluti
NEW
)
Global Claims IT Leader
Global Claims IT Leader
MARSH CORPORATE SERVICES LIMITED
The City, EC3R 5BU
Pension Scheme, Private Health Insurance & life insurance
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
NEWPREMIUM
Role: Full Stack Software Engineer (UK-based, early-stage startup) £60,000 - £80,000 per annum | No Sponsorship | x3 week in office - Backed by technology start up accelerator and VC - Join a mission-driven AI startup transforming how medical and healthcare organisations collaborate. Using machine learning and advanced recommendation systems, the team helps to matchmake some of the leading Medical and Pharmaceuticalbusinesses with their extensive network of professionals. This allows them to engage seamlessly all while reducing operational costs so resources can focus on changing lives. This is the chance to work on cutting-edge AI technology at an early stage with real influence on product and architecture to help medical organisations do more with their resources while changing lives and impact clients across the US and FTSE markets.
Role: Full Stack Software Engineer (UK-based, early-stage startup) £60,000 - £80,000 per annum | No Sponsorship | x3 week in office - Backed by technology start up accelerator and VC - Join a mission-driven AI startup transforming how medical and healthcare organisations collaborate. Using machine learning and advanced recommendation systems, the team helps to matchmake some of the leading Medical and Pharmaceuticalbusinesses with their extensive network of professionals. This allows them to engage seamlessly all while reducing operational costs so resources can focus on changing lives. This is the chance to work on cutting-edge AI technology at an early stage with real influence on product and architecture to help medical organisations do more with their resources while changing lives and impact clients across the US and FTSE markets.
NEWFEATURED
)
Java Quantitative Developer Low Latency
Java Quantitative Developer Low Latency
James Joseph Associates Limited
EC2N, City of London
From £150,000 to £175,000 per annum Circa 50-100% Bonus + Pension + Be
Our client is a leading and well-established player in the Digital Asset and Cryptocurrency Quantitative/Algorithmic trading industry. The business is going from strength to strength, they are currently going through a period of exponential growth and are enjoying record profits The business is actively expanding as there is additional headcount for a number trade platform specialist Java Development with a focus on either/or Quantitative Development or low-latency performance optimization. You will be working on greenfield projects to build out and enhance their low latency trading systems. Working in a fast-paced trading environment as a Quant Developer, where you will collaborate closely with expert traders, quantitative analysts, and engineering specialists to craft and fine-tune trading strategies across both spot and derivative markets.
Our client is a leading and well-established player in the Digital Asset and Cryptocurrency Quantitative/Algorithmic trading industry. The business is going from strength to strength, they are currently going through a period of exponential growth and are enjoying record profits The business is actively expanding as there is additional headcount for a number trade platform specialist Java Development with a focus on either/or Quantitative Development or low-latency performance optimization. You will be working on greenfield projects to build out and enhance their low latency trading systems. Working in a fast-paced trading environment as a Quant Developer, where you will collaborate closely with expert traders, quantitative analysts, and engineering specialists to craft and fine-tune trading strategies across both spot and derivative markets.
)
Espire Infolabs is hiring for MS Power Platform Engineer for London, UK location. Job Title: MS Power Platform Engineer - Job Type: Permanent - Job Location: London (3 Days/week onsite) We are seeking a skilled Power Platform Engineer with deep insurance industry expertise to design, develop, and implement automation solutions using Microsoft Power Platform technologies. The successful candidate will serve as a technical expert in Power Automate and broader Power Platform capabilities while effectively managing stakeholder relationships and driving digital transformation initiatives within the insurance and re-insurance domain. Key Responsibilities - Technical Development * Design and develop complex automation workflows using Power Automate (formerly Microsoft Flow) * Microsoft Copilot Studio * Build custom applications using Power Apps to meet specific business requ
Espire Infolabs is hiring for MS Power Platform Engineer for London, UK location. Job Title: MS Power Platform Engineer - Job Type: Permanent - Job Location: London (3 Days/week onsite) We are seeking a skilled Power Platform Engineer with deep insurance industry expertise to design, develop, and implement automation solutions using Microsoft Power Platform technologies. The successful candidate will serve as a technical expert in Power Automate and broader Power Platform capabilities while effectively managing stakeholder relationships and driving digital transformation initiatives within the insurance and re-insurance domain. Key Responsibilities - Technical Development * Design and develop complex automation workflows using Power Automate (formerly Microsoft Flow) * Microsoft Copilot Studio * Build custom applications using Power Apps to meet specific business requ
NEWFEATURED
Senior Front End Developer / Engineer (React TypeScript Data Visualisation) London to £80k - Are you a skilled Software Developer with strong React and Data Visualisation skills combined with a good appreciation of financial markets and technology? You could be joining a growing, global, Fintech services company that has seen 30-40% year on year growth for the past 10 years and has ambitious growth plans. As a Senior Front End Developer you'll design and develop new features and enhancements to the front end of the platform with a focus on real-time data visualisation on client dashboards and portals using React, there's approximately 70-80% Greenfield development. You'll collaborate with backend engineers to build complex financial products in a technology driven environment with lots of learning and self development opportunities.
Senior Front End Developer / Engineer (React TypeScript Data Visualisation) London to £80k - Are you a skilled Software Developer with strong React and Data Visualisation skills combined with a good appreciation of financial markets and technology? You could be joining a growing, global, Fintech services company that has seen 30-40% year on year growth for the past 10 years and has ambitious growth plans. As a Senior Front End Developer you'll design and develop new features and enhancements to the front end of the platform with a focus on real-time data visualisation on client dashboards and portals using React, there's approximately 70-80% Greenfield development. You'll collaborate with backend engineers to build complex financial products in a technology driven environment with lots of learning and self development opportunities.
NEWPREMIUM
Senior Front End Developer JavaScript Vue.js
Senior Front End Developer JavaScript Vue.js
Client Server
W6, West London, W6 0LG
£85000 - £100000 per annum
Senior Front End Developer / Engineer (JavaScript Vue.js) London to £100k - Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has been established 10 years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Front End Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll focus on front end components using JavaScript and Vue.js, there's a
Senior Front End Developer / Engineer (JavaScript Vue.js) London to £100k - Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has been established 10 years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Front End Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll focus on front end components using JavaScript and Vue.js, there's a
NEWPREMIUM
Front End Engineer React - Hedge Fund
Front End Engineer React - Hedge Fund
Client Server
Victoria, SW1
£80000 - £95000 per annum + bonus + benefits
React Developer / Front End Engineer (React v19 TypeScript) London / WFH to £95k - Do you have expertise with React? You could be progressing your career at a Hedge Fund with complex work and substantial bonus earning potential. As a React Developer you'll join a globally distributed team to develop engaging and simple user interfaces across all internal business systems. You'll collaborate with UX and Product teams, actively participating in all stages of a project, through product design, development, implementation, testing and maintenance. You'll join colleagues in the impressive Central London office with flexibility to work from home twice a week. * You have strong Front End development skills with React (they're using v19) and TypeScript * You are experienced with other web technologies such as HTML, CSS, Web APIs
React Developer / Front End Engineer (React v19 TypeScript) London / WFH to £95k - Do you have expertise with React? You could be progressing your career at a Hedge Fund with complex work and substantial bonus earning potential. As a React Developer you'll join a globally distributed team to develop engaging and simple user interfaces across all internal business systems. You'll collaborate with UX and Product teams, actively participating in all stages of a project, through product design, development, implementation, testing and maintenance. You'll join colleagues in the impressive Central London office with flexibility to work from home twice a week. * You have strong Front End development skills with React (they're using v19) and TypeScript * You are experienced with other web technologies such as HTML, CSS, Web APIs
NEWPREMIUM
Related Jobs
Locations
- London
- Central London
- North West London
- South East London
- North London
- East London
- Watford
- South East
- West London
- Southwark
- Dorking
- Southampton
- East Anglia
- Essex
- Bristol
- Brighton
- Hampshire
- Portsmouth
- High Wycombe
- Cambridge
- Glasgow
- Scotland
- Slough
- Devon
- Reading
- Cheltenham
- Surrey
- Birmingham
- Swindon
- Milton Keynes
- North East
- Newcastle Upon Tyne
- Uxbridge
- Leeds
- Yorkshire
- Guildford
- Leicester
- County Antrim
- Manchester
- Basildon
- West Midlands
- Bracknell
- Maidenhead
- Basingstoke
- Oxford
- East Midlands