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105 Permanent API jobs in East London + 10 miles
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A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
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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
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Experience with RESTful API design and integration.
Experience with RESTful API design and integration.
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Experience with RESTful API design and integration.
Experience with RESTful API design and integration.
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Python, Flask ,Azure, MySQL, API, Django, FastAPI
Python, Flask ,Azure, MySQL, API, Django, FastAPI
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Familiarity with Endur and the .NET API (Open Components) is a plus.
Familiarity with Endur and the .NET API (Open Components) is a plus.
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Strong foundation in web development, REST API design, and secure best practices
Strong foundation in web development, REST API design, and secure best practices
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Azure Developer
Azure Developer
Queen Square Recruitment Limited
EC2N, City of London
From £500 to £600 per day inside IR35, DOE
Develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API) * Experience with SQL API and familiarity with other APIs
Develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API) * Experience with SQL API and familiarity with other APIs
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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.
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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.
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Collaborate with Data Analysts, Architects, and system owners to improve data quality and support API/Middleware-based data management. * Full lifecycle development experience on the Mulesoft Anypoint Platform (Design Centre, Exchange, Studio, API Manager, Runtime Manager). * Proficiency in RESTful API development and working with XML, XSLT, and XSD.
Collaborate with Data Analysts, Architects, and system owners to improve data quality and support API/Middleware-based data management. * Full lifecycle development experience on the Mulesoft Anypoint Platform (Design Centre, Exchange, Studio, API Manager, Runtime Manager). * Proficiency in RESTful API development and working with XML, XSLT, and XSD.
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Familiarity with JSON and API usage.
Familiarity with JSON and API usage.
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Technical Lead – Integration Team
Technical Lead – Integration Team
Zorba Consulting
SE1, South East London
From £60,000 to £70,000 per annum 28 days hols, health insurance, soci
Join a fast-growing HR software company as a Technical Lead for their Integration team with Client Facing experience, leading/mentoring technical teams and API development & integrations experience (C#, .NET, SQL Server). * 4+ years experience in API development and integrations (REST, SOAP, GraphQL) * Expertise in AWS services (Lambda, API Gateway, S3, DynamoDB, SQS, SNS)
Join a fast-growing HR software company as a Technical Lead for their Integration team with Client Facing experience, leading/mentoring technical teams and API development & integrations experience (C#, .NET, SQL Server). * 4+ years experience in API development and integrations (REST, SOAP, GraphQL) * Expertise in AWS services (Lambda, API Gateway, S3, DynamoDB, SQS, SNS)
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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.
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EIS Service and Support G7 Platform Operations Manager
EIS Service and Support G7 Platform Operations Manager
H M Revenue & Customs (HMRC)
UK
From £56,344 to £62,590 per annum
EIS provide platforms for delivering Application Programming Interface (API) access and File Transfer (FT) capability to HMRC Systems. We provide artefacts and support for API customers (software developers and Other Government Departments) to build and manage authorised software that seamlessly integrates with HMRC digital services.
EIS provide platforms for delivering Application Programming Interface (API) access and File Transfer (FT) capability to HMRC Systems. We provide artefacts and support for API customers (software developers and Other Government Departments) to build and manage authorised software that seamlessly integrates with HMRC digital services.
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Senior Product Engineer remote
Senior Product Engineer remote
Serve Legal
Pimlico, SW1
From £70,000 to £80,000 per annum plus 10% company bonus scheme
Full-Stack Thinker comfortable across front-end, back-end, API and AI development.
Full-Stack Thinker comfortable across front-end, back-end, API and AI development.
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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.
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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.
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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
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
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Lead Product Designer
Lead Product Designer
Halian Technology Limited
W1, Central London
From £100,000 to £115,000 per annum Plus bonus and benefits
This is a rare opportunity to define my clients design culture from the ground upspanning UI/UX, API documentation, and visual identity across the organisation. * Collaborate with Engineering to ensure our API documentation is clear, accessible, and consistent.
This is a rare opportunity to define my clients design culture from the ground upspanning UI/UX, API documentation, and visual identity across the organisation. * Collaborate with Engineering to ensure our API documentation is clear, accessible, and consistent.
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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
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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.)
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About the Company - You'll be joining a global leader in real estate services and technology solutions. Known for combining deep market expertise with cutting-edge innovation, this business is committed to modernising how property and investment decisions are made. You'll be part of a collaborative, forward-thinking environment that values creativity, accountability, and growth-where your contributions will directly shape the future of real estate technology. Role Responsibilities * Architect, build, and optimise scalable ETL pipelines for diverse datasets. * Onboard, document, and curate external datasets for internal use. * Perform data validation, forensic analysis, and troubleshooting. * Deliver high-quality, maintainable Python code and participate in peer reviews. * Collaborate with stakeholders and researchers to support analytics and product development.
About the Company - You'll be joining a global leader in real estate services and technology solutions. Known for combining deep market expertise with cutting-edge innovation, this business is committed to modernising how property and investment decisions are made. You'll be part of a collaborative, forward-thinking environment that values creativity, accountability, and growth-where your contributions will directly shape the future of real estate technology. Role Responsibilities * Architect, build, and optimise scalable ETL pipelines for diverse datasets. * Onboard, document, and curate external datasets for internal use. * Perform data validation, forensic analysis, and troubleshooting. * Deliver high-quality, maintainable Python code and participate in peer reviews. * Collaborate with stakeholders and researchers to support analytics and product development.
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Senior Data Scientist / Engineer
Senior Data Scientist / Engineer
Serve Legal
Pimlico, SW1
From £60,000 to £75,000 per annum plus 10% company bonus scheme
Reports to: Data Director / Executive Sponsor - Location: Remote with occasional travel to London (2 times a month) Contract: Full-time, permanent - Base Salary: £60,000 £75,000 dependent on location and experience + 10% bonus scheme - Why This Role Exists - Serve Legal is forging new ground: transforming operational data into market-ready products, algorithms, and insights that redefine client value. As a driver of our Innovation Labs, you will experiment, prototype, and build compelling data solutions in a startup-within-a-business environmentboldly iterating and owning proofs-of-concept that scale. This is a position with a balance between data science and engineering. Besides exploring and analysing datasets, you will help to establish a cloud native data foundations, with a data warehouse and supporting data pipelines.
Reports to: Data Director / Executive Sponsor - Location: Remote with occasional travel to London (2 times a month) Contract: Full-time, permanent - Base Salary: £60,000 £75,000 dependent on location and experience + 10% bonus scheme - Why This Role Exists - Serve Legal is forging new ground: transforming operational data into market-ready products, algorithms, and insights that redefine client value. As a driver of our Innovation Labs, you will experiment, prototype, and build compelling data solutions in a startup-within-a-business environmentboldly iterating and owning proofs-of-concept that scale. This is a position with a balance between data science and engineering. Besides exploring and analysing datasets, you will help to establish a cloud native data foundations, with a data warehouse and supporting data pipelines.
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Related Jobs
Locations
- London
- City of London
- Central London
- South East London
- North London
- Shoreditch, East London
- North West London
- Mayfair
- Shadwell, East London
- Southwark
- Essex
- West London
- South East
- Derby
- Basildon
- Kent
- South West London
- Cambridge
- Hertfordshire
- Luton
- Surrey
- Birmingham
- Bromley
- Manchester
- Milton Keynes
- Heathrow
- Brighton
- Wales
- Leeds
- West Midlands
- Nottingham
- Reading
- Dartford
- Portsmouth
- Stevenage
- Leicester
- Slough
- Hull
- East Anglia