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146 API jobs in Hertfordshire + 20 miles
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Location: London / Hybrid (2 days in the office, 3 days from home) Salary: £55,000 - £65,000 - A Guidewire developer is required for a leading Lloyd's of London Insurance organisation, implementing a Guidewire Claims system. This is to join a brand-new team onboarding and implementing a Guidewire Claims system. You will have experience working with Guidewire, across either PolicyCenter BillingCenter or ClaimsCenter. As this is an initial migration and implementation you will be essential in assisting the organisation migrate from their existing claims platform to Claims Center which will be hosted in Guidewires Cloud. Ability to interact with stakeholders and to be involved in decisions affecting the implementation due to go live in 2026 is essential. You will have experience customising Guidewire in Gosu.
Location: London / Hybrid (2 days in the office, 3 days from home) Salary: £55,000 - £65,000 - A Guidewire developer is required for a leading Lloyd's of London Insurance organisation, implementing a Guidewire Claims system. This is to join a brand-new team onboarding and implementing a Guidewire Claims system. You will have experience working with Guidewire, across either PolicyCenter BillingCenter or ClaimsCenter. As this is an initial migration and implementation you will be essential in assisting the organisation migrate from their existing claims platform to Claims Center which will be hosted in Guidewires Cloud. Ability to interact with stakeholders and to be involved in decisions affecting the implementation due to go live in 2026 is essential. You will have experience customising Guidewire in Gosu.
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Senior Data Engineer
Senior Data Engineer
Anson Mccade
WC1, Central London, W C1R
GBP 65,000.00 - 70,000.00 per year;GBP 57,000.00 per year;GBP 64,000.0
£65,000 - 70,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £57,000 - £64,000 (London up to £70,000) + Excellent Benefits - Hybrid / UK-Wide Locations - A respected digital consultancy is on the lookout for a Senior Data Engineer to join its growing data practice. This is a brilliant opportunity to be part of a human-focused, tech-forward environment that delivers bespoke data solutions for clients in both the public and private sectors. Senior Engineers here don't just write code-they shape outcomes. You'll join a collaborative, agile team that values technical excellence, continuous improvement, and inclusive delivery. The consultancy is known for combining engineering, data and user-centred design to build impactful platforms that matter. In this role, you'll take the lead in crafting data pipelines, designing c
£65,000 - 70,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £57,000 - £64,000 (London up to £70,000) + Excellent Benefits - Hybrid / UK-Wide Locations - A respected digital consultancy is on the lookout for a Senior Data Engineer to join its growing data practice. This is a brilliant opportunity to be part of a human-focused, tech-forward environment that delivers bespoke data solutions for clients in both the public and private sectors. Senior Engineers here don't just write code-they shape outcomes. You'll join a collaborative, agile team that values technical excellence, continuous improvement, and inclusive delivery. The consultancy is known for combining engineering, data and user-centred design to build impactful platforms that matter. In this role, you'll take the lead in crafting data pipelines, designing c
PREMIUM
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Front-End Engineer (Contract) Secure AI Systems for Defence - Contract | Inside IR35 | £600£700/day | Hybrid / Secure Site | SC/DV Cleared | UK Nationals Only - Contract Length: Initial 3-month engagement (rolling), part of a 69 month roadmap - Were supporting a cutting-edge AI organisation delivering a government-funded mission into the Defence sector. Theyre seeking a talented Front-End Engineer to help build and iterate on user interfaces that bring complex machine learning outputs to life - transcription analysis, graph-based risk models, and natural-language interfaces for end users in secure, disconnected environments. This is not your typical dashboard gig. Its a chance to design and build offline-first, insight-rich tools that support real-world decision-makingwhere clarity and usability can have operational consequences. o Live and retrospective transcription
Front-End Engineer (Contract) Secure AI Systems for Defence - Contract | Inside IR35 | £600£700/day | Hybrid / Secure Site | SC/DV Cleared | UK Nationals Only - Contract Length: Initial 3-month engagement (rolling), part of a 69 month roadmap - Were supporting a cutting-edge AI organisation delivering a government-funded mission into the Defence sector. Theyre seeking a talented Front-End Engineer to help build and iterate on user interfaces that bring complex machine learning outputs to life - transcription analysis, graph-based risk models, and natural-language interfaces for end users in secure, disconnected environments. This is not your typical dashboard gig. Its a chance to design and build offline-first, insight-rich tools that support real-world decision-makingwhere clarity and usability can have operational consequences. o Live and retrospective transcription
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Senior Technical Consultant - Genesys
Senior Technical Consultant - Genesys
COMPUTACENTER (UK) LIMITED
Hatfield, Hertfordshire, AL10 9TW
Unspecified
Life on the team - Join a high-impact team at the forefront of global service delivery innovation. As part of the GSD Systems team, youll play a key role in delivering and enhancing the contact centre technologies that support Computacenters Global Service Desk (GSD). With over 4,000 agents relying on our solutions daily, we ensure seamless multi-channel experiences from voice and email to web chat and chatbot with industry-leading reliability. You'll be surrounded by forward-thinking professionals who are passionate about technology, continuous improvement, and delivering exceptional customer experiences. This is your opportunity to shape the future of contact centre solutions within a dynamic, global organisation that values innovation, autonomy, and technical excellence. What you'll do * Act as the technical authority for the Genesys Cloud CX platform, leading the
Life on the team - Join a high-impact team at the forefront of global service delivery innovation. As part of the GSD Systems team, youll play a key role in delivering and enhancing the contact centre technologies that support Computacenters Global Service Desk (GSD). With over 4,000 agents relying on our solutions daily, we ensure seamless multi-channel experiences from voice and email to web chat and chatbot with industry-leading reliability. You'll be surrounded by forward-thinking professionals who are passionate about technology, continuous improvement, and delivering exceptional customer experiences. This is your opportunity to shape the future of contact centre solutions within a dynamic, global organisation that values innovation, autonomy, and technical excellence. What you'll do * Act as the technical authority for the Genesys Cloud CX platform, leading the
CRM/CX Marketing Manager - Chelsea, London | 5 days on site £50,000£63,000 base + 12% bonus + 9% pension + benefits - Are you a CRM or CX marketing professional ready to take ownership of a global platform and shape how a brand engages with its customers? Were hiring a CRM/CX Marketing Manager to lead customer engagement through a robust marketing automation ecosystem. This is a high-impact role at the heart of a dynamic in-house marketing team, offering the opportunity to work hands-on with enterprise tech like Emarsys and SAP. What Youll Do * Own and manage the CRM platform (Emarsys), ensuring campaigns and automated programmes are delivered with precision and creativity * Build and optimise workflows, audience segments, and reporting for both automated journeys and ad hoc campaigns * Collaborate daily with marketing, digital, and IT teams to deliver a world-class c
CRM/CX Marketing Manager - Chelsea, London | 5 days on site £50,000£63,000 base + 12% bonus + 9% pension + benefits - Are you a CRM or CX marketing professional ready to take ownership of a global platform and shape how a brand engages with its customers? Were hiring a CRM/CX Marketing Manager to lead customer engagement through a robust marketing automation ecosystem. This is a high-impact role at the heart of a dynamic in-house marketing team, offering the opportunity to work hands-on with enterprise tech like Emarsys and SAP. What Youll Do * Own and manage the CRM platform (Emarsys), ensuring campaigns and automated programmes are delivered with precision and creativity * Build and optimise workflows, audience segments, and reporting for both automated journeys and ad hoc campaigns * Collaborate daily with marketing, digital, and IT teams to deliver a world-class c
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Job Title: Business Intelligence (BI) Analyst - Location: Milton Keynes (2 days on-site) Salary: £35,000 - £50,000 DOE + Bonus - About Us - We're a fast-growing data consultancy helping forward-thinking clients transform their customer engagement through intelligent use of CRM platforms and AI. We specialise in building integrated data ecosystems that drive smarter business decisions, better customer insights, and measurable ROI. Our clients range from scaling SaaS startups to global enterprises across sectors like retail, finance, technology, and healthcare. We work at the intersection of data, automation, and customer intelligence. As we scale, we're looking for a talented BI Analyst to join our analytics team and help our clients extract true business value from their data. The Role - As a BI Analyst, you will play a critical role in helping our clients understand
Job Title: Business Intelligence (BI) Analyst - Location: Milton Keynes (2 days on-site) Salary: £35,000 - £50,000 DOE + Bonus - About Us - We're a fast-growing data consultancy helping forward-thinking clients transform their customer engagement through intelligent use of CRM platforms and AI. We specialise in building integrated data ecosystems that drive smarter business decisions, better customer insights, and measurable ROI. Our clients range from scaling SaaS startups to global enterprises across sectors like retail, finance, technology, and healthcare. We work at the intersection of data, automation, and customer intelligence. As we scale, we're looking for a talented BI Analyst to join our analytics team and help our clients extract true business value from their data. The Role - As a BI Analyst, you will play a critical role in helping our clients understand
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Role: Backend Engineer (NestJS, SaaS, ERP) We're hiring a seasoned backend engineer to lead our platform rebuild You'll collaborate closely with the founder, shaping the product and scaling the tech. What You'll Do * Lead backend dev using NestJS * Design scalable APIs and ERP/accounting tool integrations * Work with AI tools (OpenAI, Vertex AI) * Define architecture and set engineering standards * Mentor junior developers What We're Looking For * Strong NestJS + SaaS backend experience * ERP/accounting integration experience * Solid JavaScript/TypeScript skills * Comfortable owning projects end-to-end * Bonus: Experience with AI APIs and frontend (Next.js/Node.js)
Role: Backend Engineer (NestJS, SaaS, ERP) We're hiring a seasoned backend engineer to lead our platform rebuild You'll collaborate closely with the founder, shaping the product and scaling the tech. What You'll Do * Lead backend dev using NestJS * Design scalable APIs and ERP/accounting tool integrations * Work with AI tools (OpenAI, Vertex AI) * Define architecture and set engineering standards * Mentor junior developers What We're Looking For * Strong NestJS + SaaS backend experience * ERP/accounting integration experience * Solid JavaScript/TypeScript skills * Comfortable owning projects end-to-end * Bonus: Experience with AI APIs and frontend (Next.js/Node.js)
Key Responsibilities * Lead the frontend rebuild of the platform's first major version using React (Next.js) and Node.js. * Work closely with design, backend, and product teams to develop interactive features that simplify complex financial processes. * Develop secure, scalable UI components integrated with backend APIs and third-party systems. * Contribute to the development and upkeep of a modern, component-based design system. * Improve usability and performance across browsers and devices with a focus on speed and polish. * Incorporate user feedback to continuously refine the experience. Requirements * Solid experience building modern web applications with React and Node.js. * Background in SaaS development, ideally within finance, ERP, or construction tech domains. * Strong understanding of RESTful APIs, authentication, and state management (e.g., Redux, React Qu
Key Responsibilities * Lead the frontend rebuild of the platform's first major version using React (Next.js) and Node.js. * Work closely with design, backend, and product teams to develop interactive features that simplify complex financial processes. * Develop secure, scalable UI components integrated with backend APIs and third-party systems. * Contribute to the development and upkeep of a modern, component-based design system. * Improve usability and performance across browsers and devices with a focus on speed and polish. * Incorporate user feedback to continuously refine the experience. Requirements * Solid experience building modern web applications with React and Node.js. * Background in SaaS development, ideally within finance, ERP, or construction tech domains. * Strong understanding of RESTful APIs, authentication, and state management (e.g., Redux, React Qu
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Software Development Team Lead
Software Development Team Lead
Hays
EC1, City of London
£90000.0 - £110000.0 per annum + Competitive + Benefits Package
Programming Languages & Frameworks: TypeScript, Node.js, NestJS (REST API framework), AngularJS (or similar frontend frameworks) * Databases & Data Management: PostgreSQL, PostgREST (RESTful API layer over PostgreSQL)
Programming Languages & Frameworks: TypeScript, Node.js, NestJS (REST API framework), AngularJS (or similar frontend frameworks) * Databases & Data Management: PostgreSQL, PostgREST (RESTful API layer over PostgreSQL)
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Programming in Azure / Microsoft capable languages, such as ARM / Bicep, PowerShell, yaml, Python and a understanding of Azure API's from the data plane
Programming in Azure / Microsoft capable languages, such as ARM / Bicep, PowerShell, yaml, Python and a understanding of Azure API's from the data plane
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TDD mindset & solid API design skills
TDD mindset & solid API design skills
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Knowledge of microservice architecture and API design principles
Knowledge of microservice architecture and API design principles
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Senior Android Developers - Remote - up to £95K + Package
Senior Android Developers - Remote - up to £95K + Package
Halian Technology Limited
Soho, W1
£95,000 per annum
Rest API Development
Rest API Development
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5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API Experience developing REST API-driven mobile first web applications
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Backend Software Engineer C# .Net - Asset Management
Backend Software Engineer C# .Net - Asset Management
Client Server
The City, EC4
£100000 - £150000 per annum + bonus + benefits
There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.
There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.
NEWPREMIUM
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Implement schema registries, data contracts, and API-first data governance.
Implement schema registries, data contracts, and API-first data governance.
NEWFEATURED
Knowledge / hands -on with the following tech is a huge advantage - SQL, Rest API's, Postman, SOAP, Automation scripting
Knowledge / hands -on with the following tech is a huge advantage - SQL, Rest API's, Postman, SOAP, Automation scripting
PREMIUM
PowerShell scripting and use of Microsoft Graph API
PowerShell scripting and use of Microsoft Graph API
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Senior Security Engineer (PurView, Sentinel, Defender)
Senior Security Engineer (PurView, Sentinel, Defender)
Invitise Ltd
WC1A, Central London
Up to £70,000 per annum + Excellent Benefits
PowerShell scripting and use of Microsoft Graph API
PowerShell scripting and use of Microsoft Graph API
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Knowledge of FTP/SFTP, SSL Certificates, REST API, SOAP, Postman, SoapUI.
Knowledge of FTP/SFTP, SSL Certificates, REST API, SOAP, Postman, SoapUI.
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Staff Back End Engineer
Staff Back End Engineer
John Lewis & Partners
SW1V, South West London, SW1V 2QQ
From £75,000 to £92,000 per annum
REST API development and/or consumption.
REST API development and/or consumption.
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Strong hands-on experience of the Microsoft AI stack, including Microsoft Copilot, Copilot Studio, Azure AI Foundry, Microsoft Graph API and Copilot within Microsoft 365 applications.
Strong hands-on experience of the Microsoft AI stack, including Microsoft Copilot, Copilot Studio, Azure AI Foundry, Microsoft Graph API and Copilot within Microsoft 365 applications.
• REST API, EDI, and other integration technologies.
• REST API, EDI, and other integration technologies.
PREMIUM
Senior Full Stack Engineer React .Net Python
Senior Full Stack Engineer React .Net Python
Client Server
South Kensington, SW7
£100000 - £150000 per annum + bonus + benefits
You have REST API experience
You have REST API experience
NEWPREMIUM
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Full Stack Lead Engineer
Full Stack Lead Engineer
Hunter Selection
Soho, W1
£60000 - £85000 per annum + health insurance life insurance
Restful API development - React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge | Restful API | API | SQL | NoSQL | messaging queues | WebSockets | DevOps | CI/CD | GitHub | WebAssembly | Infrastructure as Code | React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge | Restful API | API | SQL | NoSQL | messaging queues | WebSockets | DevOps | CI/CD | GitHub | WebAssembly | Infrastructure as Code | React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge | Restful API | API | SQL | NoSQL | messaging queues | WebSockets | DevOps | CI/CD | GitHub | WebAssembly | Infrastructure as Code
Restful API development - React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge | Restful API | API | SQL | NoSQL | messaging queues | WebSockets | DevOps | CI/CD | GitHub | WebAssembly | Infrastructure as Code | React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge | Restful API | API | SQL | NoSQL | messaging queues | WebSockets | DevOps | CI/CD | GitHub | WebAssembly | Infrastructure as Code | React | TypeScript | NodeJS | AWS | Event driven Architecture | CDK | Lambda | Cognito | S3 | SQS | Eventbridge | Restful API | API | SQL | NoSQL | messaging queues | WebSockets | DevOps | CI/CD | GitHub | WebAssembly | Infrastructure as Code
NEWFEATURED