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Locations
Locations
Salaries
Date posted
Type of Company
Job types
45 Work From Home API jobs in Hertfordshire + 20 miles
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Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
Our client, a growing consultancy delivering cutting-edge AI and data-led services to government and public sector clients, is looking for a Full Stack Software Engineer to join their forward-thinking team in Milton Keynes. This is a fantastic opportunity to contribute to a nationally recognised AI innovation platform used to drive sensitive data discovery, redaction, and secure archiving for government departments. You'll work across a modern tech stack and play a key role in the development, deployment, and support of a secure full stack system used across the UK public sector. * Design, build, and test full stack software in a secure, client-focused environment * Work with modern front-end technologies (React, TypeScript, HTML/CSS) to deliver intuitive UI/UX * Develop robust back-end services using Java and Spring Boot
1 year Contract. Remote £490 per day. Inside IR35 - Our Central Government client is looking for an experienced Data Engineer to work on a brand new AI-focused Digital project in a GDS environment. Technical Responsibilities * Build and maintain data pipelines in Azure (ADF, Databricks, Key Vault). * Develop ingestion workflows for APIs, structured data, and CSV sources. * Implement Infrastructure as Code (Bicep) for Dev/Test environments. * Deliver Bronze and Silver layer transformations using Python and SQL. * Create data validation and data quality reporting processes. * Support integration across systems (IDS/Postgres, Dataverse CRM, Web App platform). * Implement secure, role-based data access controls. * Ensure code quality, scalability, and compliance with DfE technical and security standards. Delivery and Collaboration
1 year Contract. Remote £490 per day. Inside IR35 - Our Central Government client is looking for an experienced Data Engineer to work on a brand new AI-focused Digital project in a GDS environment. Technical Responsibilities * Build and maintain data pipelines in Azure (ADF, Databricks, Key Vault). * Develop ingestion workflows for APIs, structured data, and CSV sources. * Implement Infrastructure as Code (Bicep) for Dev/Test environments. * Deliver Bronze and Silver layer transformations using Python and SQL. * Create data validation and data quality reporting processes. * Support integration across systems (IDS/Postgres, Dataverse CRM, Web App platform). * Implement secure, role-based data access controls. * Ensure code quality, scalability, and compliance with DfE technical and security standards. Delivery and Collaboration
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React Developer TypeScript - Hedge Fund
React Developer TypeScript - Hedge Fund
Client Server
Victoria, South West London (SW1), SW1H
£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
PREMIUM
Backend Software Engineer TypeScript Node AWS
Backend Software Engineer TypeScript Node AWS
Client Server
Shoreditch, East London (E1), EC2A
£75000 - £85000 per annum + benefits
Backend Software Engineer / Developer (TypeScript Node AWS) Remote to £85k - Are you a backend focussed Software Engineer looking for an opportunity to progress your career, whilst working remotely on a modern tech stack? You could be joining a scaling AI software solutions provider in a senior, hands-on role. As a Backend Software Engineer you will build new features with a focus on backend services and APIs using TypeScript, Node and AWS, also with some Python work for LLM integration. You'll take ownership of projects, working across the full development lifecycle from requirements through to delivery and help to drive the adoption of AI within the development lifecycle. There's a remote first policy so you can work from home on a fulltime basis with the caveat that you'll meet up with the team in London once a month (expenses paid); there's also flexible working h
Backend Software Engineer / Developer (TypeScript Node AWS) Remote to £85k - Are you a backend focussed Software Engineer looking for an opportunity to progress your career, whilst working remotely on a modern tech stack? You could be joining a scaling AI software solutions provider in a senior, hands-on role. As a Backend Software Engineer you will build new features with a focus on backend services and APIs using TypeScript, Node and AWS, also with some Python work for LLM integration. You'll take ownership of projects, working across the full development lifecycle from requirements through to delivery and help to drive the adoption of AI within the development lifecycle. There's a remote first policy so you can work from home on a fulltime basis with the caveat that you'll meet up with the team in London once a month (expenses paid); there's also flexible working h
PREMIUM
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Senior DeFi Backend Engineer
Senior DeFi Backend Engineer
Plexus Resource Solutions Ltd
City of London (EC1)
Up to £175,000 per annum
DeFi - Remote - Upto€200k+ Tokens - Plexus is partnering with a long-standing DeFi protocol building a next-generation trading platform. Theyre pioneering a new model for automated strategies and and are now looking for a Senior DeFi Backend Engineer to help build the core systems powering it. Youll join a highly technical team working across general backend systems engineering along with apis, optimising the application for performance, arbitrage bots and more. 3+ years experience with backend Python : Including async systems, data pipelines, or protocol-level integrations. 1+ year of recent Rust experience : With the ability to read, modify, and contribute to Rust-based components. DevOps: Ideally with docker experience - Background in DeFi : Having worked at a DeFi company or shipped meaningful DeFi projects (AMMs, bots, indexers, trading systems, or protocol integ
DeFi - Remote - Upto€200k+ Tokens - Plexus is partnering with a long-standing DeFi protocol building a next-generation trading platform. Theyre pioneering a new model for automated strategies and and are now looking for a Senior DeFi Backend Engineer to help build the core systems powering it. Youll join a highly technical team working across general backend systems engineering along with apis, optimising the application for performance, arbitrage bots and more. 3+ years experience with backend Python : Including async systems, data pipelines, or protocol-level integrations. 1+ year of recent Rust experience : With the ability to read, modify, and contribute to Rust-based components. DevOps: Ideally with docker experience - Background in DeFi : Having worked at a DeFi company or shipped meaningful DeFi projects (AMMs, bots, indexers, trading systems, or protocol integ
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Software Engineer
Software Engineer
EMBL-EBI
Hinxton, Saffron Walden (CB10), CB10 1SD
From £43,015 to £72,738 per annum based on experience and family
We are looking for a Developer with a strong record in software development and interest in developing AI-based systems for one of the most internationally used data resources in biological science, UniProt. Our team is very dynamic and interdisciplinary, comprising talented and enthusiastic software engineers and bioinformaticians working closely together with biologists and scientists. The UniProt resource is one of the most internationally used resources for protein sequence and functional annotation, providing comprehensive, high-quality, and freely accessible data to a large and diverse research community in genomics, proteins and proteomics. As part of the Computational Annotation team in UniProt, you will be working in the design, development and maintenance of systems that automatically assign high-quality functional annotations to millions of unreviewed prote
We are looking for a Developer with a strong record in software development and interest in developing AI-based systems for one of the most internationally used data resources in biological science, UniProt. Our team is very dynamic and interdisciplinary, comprising talented and enthusiastic software engineers and bioinformaticians working closely together with biologists and scientists. The UniProt resource is one of the most internationally used resources for protein sequence and functional annotation, providing comprehensive, high-quality, and freely accessible data to a large and diverse research community in genomics, proteins and proteomics. As part of the Computational Annotation team in UniProt, you will be working in the design, development and maintenance of systems that automatically assign high-quality functional annotations to millions of unreviewed prote
PREMIUM
Software Engineer
Software Engineer
EMBL-EBI
Hinxton, Saffron Walden (CB10), CB10 1SD
From £43,015 to £72,738 per annum based on experience and family
About the Team - We are looking for a Software engineer with strong record in software development and interested in developing services for one of the most internationally used data resources in biological science, UniProt. Our team is very dynamic and interdisciplinary comprising talented and enthusiastic software engineers and bioinformaticians working closely together with biologists and scientists. The UniProt resource is one of the most internationally used protein databases serving a large and diverse research community in genomics, proteins and proteomics. Duties & Responsibilities - As part of your daily work, you will be designing and developing software and APIs for the UniProt data services and website, providing protein information to the scientific community and computational biologists.
About the Team - We are looking for a Software engineer with strong record in software development and interested in developing services for one of the most internationally used data resources in biological science, UniProt. Our team is very dynamic and interdisciplinary comprising talented and enthusiastic software engineers and bioinformaticians working closely together with biologists and scientists. The UniProt resource is one of the most internationally used protein databases serving a large and diverse research community in genomics, proteins and proteomics. Duties & Responsibilities - As part of your daily work, you will be designing and developing software and APIs for the UniProt data services and website, providing protein information to the scientific community and computational biologists.
PREMIUM
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Company Description - At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for jobseekers and companies around the world to find a perfect match in fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the worlds leading job platform. Job Description - Join our team and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. Working in the Design and Platform Performance domain, you willlead the technology side of web and mobile analytics for a platform with ov
Company Description - At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for jobseekers and companies around the world to find a perfect match in fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the worlds leading job platform. Job Description - Join our team and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. Working in the Design and Platform Performance domain, you willlead the technology side of web and mobile analytics for a platform with ov
EQUALITY BOOST
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Are you a Python Developer, keen help shape the technology that powers over 5,000 schools across the UK? Are you a Python Software Engineer who’s excited by the idea of building intuitive, high-impact web applications that truly make a difference to the education sector? If you love writing clean code, collaborative development and solving real-world problems, this is your chance to work on meaningful products in a modern engineering environment. Role: Python Developer, Python Software Engineer, Software Engineer, Software Developer - Location: 100% work from home - Salary: £35k - £42k base salary + great benefits - You will design and maintain Python and Django applications, craft reliable REST APIs, optimise MySQL-backed systems and contribute to product features from concept to deployment. You will work closely with other developers, designers and product managers
Are you a Python Developer, keen help shape the technology that powers over 5,000 schools across the UK? Are you a Python Software Engineer who’s excited by the idea of building intuitive, high-impact web applications that truly make a difference to the education sector? If you love writing clean code, collaborative development and solving real-world problems, this is your chance to work on meaningful products in a modern engineering environment. Role: Python Developer, Python Software Engineer, Software Engineer, Software Developer - Location: 100% work from home - Salary: £35k - £42k base salary + great benefits - You will design and maintain Python and Django applications, craft reliable REST APIs, optimise MySQL-backed systems and contribute to product features from concept to deployment. You will work closely with other developers, designers and product managers
FEATURED
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Salesforce Developer
Salesforce Developer
Halian Technology Limited
Central London (W1)
From £50,000 to £60,000 per annum Plus bonus and benefits
Job Specification: Mid-Level Salesforce Developer (FinTech) Location:Hybrid - Employment Type:Full-time - Level:Mid-Level - About the Role - We are seeking a skilledMid-Level Salesforce Developerto join my clients growing fintech engineering team. You will be responsible for developing, enhancing, and maintaining our Salesforce platform to support high-performance financial products, compliant workflows, and exceptional customer experiences. Youll work closely with product, operations, and engineering teams to translate business requirements into scalable Salesforce solutions. Key Responsibilities * Design, build, and deploy custom solutions usingLightning Web Components (LWC),Apex,SOQL/SOSL, andSalesforce APIs. * Configure Salesforce objects, flows, validation rules, process automation, and integrations. * Maintain and improve existing codebase, ensuring performance,
Job Specification: Mid-Level Salesforce Developer (FinTech) Location:Hybrid - Employment Type:Full-time - Level:Mid-Level - About the Role - We are seeking a skilledMid-Level Salesforce Developerto join my clients growing fintech engineering team. You will be responsible for developing, enhancing, and maintaining our Salesforce platform to support high-performance financial products, compliant workflows, and exceptional customer experiences. Youll work closely with product, operations, and engineering teams to translate business requirements into scalable Salesforce solutions. Key Responsibilities * Design, build, and deploy custom solutions usingLightning Web Components (LWC),Apex,SOQL/SOSL, andSalesforce APIs. * Configure Salesforce objects, flows, validation rules, process automation, and integrations. * Maintain and improve existing codebase, ensuring performance,
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Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Salary: up to £65,000, plus company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a minimum of 5 years and have the right to work in the UK. About Us - Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years' experience primarily serving the UK public sector and central government. We deliver high-quality solutions that make a real difference to users, citizens, and consumers. At Triad, collaboration thrives, knowledge is shared, and every voice matters. Our close-knit, supportive culture ensures you're valued from day one. Whether working with cutting-edge tech or shaping strategy for national-scale proj
Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Salary: up to £65,000, plus company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a minimum of 5 years and have the right to work in the UK. About Us - Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years' experience primarily serving the UK public sector and central government. We deliver high-quality solutions that make a real difference to users, citizens, and consumers. At Triad, collaboration thrives, knowledge is shared, and every voice matters. Our close-knit, supportive culture ensures you're valued from day one. Whether working with cutting-edge tech or shaping strategy for national-scale proj
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automation Test Engineer
automation Test Engineer
TALENT INTERNATIONAL UK LTD
City of London (EC4V), EC4V
£440.00 - £450.00 per day
Micro-service architecture and API testing principles
Micro-service architecture and API testing principles
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Senior Frontend Developer
Senior Frontend Developer
Pathfinder Business Solutions Ltd
Milton Keynes (MK9), MK9 3QA
From £50,000 to £60,000 per annum Full Benefits Pack
REST-based API development
REST-based API development
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Senior Full Stack Engineer
Senior Full Stack Engineer
McGregor Boyall Associates Limited
City of London (EC1)
£80000 - £120000 per annum + bonus
Strong knowledge of system design principles, scalable architecture patterns, and API design.
Strong knowledge of system design principles, scalable architecture patterns, and API design.
Familiarity with REST API and Soap Services
Familiarity with REST API and Soap Services
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Deep knowledge of REST API design, scalability, fault tolerance, and performance optimization.
Deep knowledge of REST API design, scalability, fault tolerance, and performance optimization.
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Data exchange and processing skills (e.g. ETL, ESB, API...)
Data exchange and processing skills (e.g. ETL, ESB, API...)
FEATURED
Design, develop, and deliver custom solutions within Planon's API framework.
Design, develop, and deliver custom solutions within Planon's API framework.
FEATURED
Design, develop, and deliver custom solutions within Planon's API framework.
Design, develop, and deliver custom solutions within Planon's API framework.
FEATURED
Deep understanding of API standards, GraphQL, WebSocket, and gRPC. * Strong experience with Node.js, Express, Spring Boot, and REST API patterns. * Hands-on with Azure services, serverless architecture, and API Gateway.
Deep understanding of API standards, GraphQL, WebSocket, and gRPC. * Strong experience with Node.js, Express, Spring Boot, and REST API patterns. * Hands-on with Azure services, serverless architecture, and API Gateway.
NEW
122 exact matches jobs are outside your preferred location
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Solid understanding of cloud-based architectures, especially Azure or AWS, including API gateways, security services, hosting models, DevOps, and infrastructure-as-code.
Solid understanding of cloud-based architectures, especially Azure or AWS, including API gateways, security services, hosting models, DevOps, and infrastructure-as-code.
FEATURED
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The successful candidate will demonstrate significant expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable technology solutions using Web API, Azure App Service, and .NET Core to satisfy business requirements and enhance operational efficiency. * Define architectural patterns for microservices and API management. Azure API Development * Develop and maintain APIs using Azure API Management, Web API, and .NET Core to enable secure and efficient integrations. * Ensure API performance, security, and compliance with best practices. * Monitor and optimize application and API performance using Azure Monitor, Application Insights, and Log Analytics. * Expertise in Mic
The successful candidate will demonstrate significant expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable technology solutions using Web API, Azure App Service, and .NET Core to satisfy business requirements and enhance operational efficiency. * Define architectural patterns for microservices and API management. Azure API Development * Develop and maintain APIs using Azure API Management, Web API, and .NET Core to enable secure and efficient integrations. * Ensure API performance, security, and compliance with best practices. * Monitor and optimize application and API performance using Azure Monitor, Application Insights, and Log Analytics. * Expertise in Mic
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Senior .Net Integration Developer
Senior .Net Integration Developer
Rise Technical
Maidenhead, Berkshire
£50000.00 - £70000.00 per annum + + Training + Holiday
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
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MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
FEATURED