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        95 Permanent API jobs in Hatfield + 20 miles

        CRM Marketing Manager

        Berkeley Resourcing Limited
        Chelsea, SW10
        From £50,000 to £63,000 per annum
        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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        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)
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        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

        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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        NEW
        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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        NEW
        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.
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        NEWPREMIUM

        AI Engineer

        Comtecs
        EC1M, City of London
        From £75,000 to £90,000 per annum +Benefits
        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.
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        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
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        NEWFEATURED
        Youll have a working knowledge of a broad stack of cloud technologies, excellent engineering skills, and experience of Ingestion and ETL methods for pushing data into Snowflake from internal (MuleSoft, Salesforce, SaaS platforms etc) and external API-sources.
        Youll have a working knowledge of a broad stack of cloud technologies, excellent engineering skills, and experience of Ingestion and ETL methods for pushing data into Snowflake from internal (MuleSoft, Salesforce, SaaS platforms etc) and external API-sources.
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        NEW
        This is your opportunity to join AXIS Capital a trusted global provider of specialty lines insurance and reinsurance. We stand apart for our outstanding client service, intelligent risk taking and superior risk adjusted returns for our shareholders. We also proudly maintain an entrepreneurial, disciplined and ethical corporate culture. As a member of AXIS, you join a team that is among the best in the industry. At AXIS, we believe that we are only as strong as our people. We strive to create an inclusive and welcoming culture where employees of all backgrounds and from all walks of life feel comfortable and empowered to be themselves. This means that we bring our whole selves to work. All qualified applicants will receive consideration for employment without regard to race, color, religion or creed, sex, pregnancy, sexual orientation, gender identity or expression, na
        This is your opportunity to join AXIS Capital a trusted global provider of specialty lines insurance and reinsurance. We stand apart for our outstanding client service, intelligent risk taking and superior risk adjusted returns for our shareholders. We also proudly maintain an entrepreneurial, disciplined and ethical corporate culture. As a member of AXIS, you join a team that is among the best in the industry. At AXIS, we believe that we are only as strong as our people. We strive to create an inclusive and welcoming culture where employees of all backgrounds and from all walks of life feel comfortable and empowered to be themselves. This means that we bring our whole selves to work. All qualified applicants will receive consideration for employment without regard to race, color, religion or creed, sex, pregnancy, sexual orientation, gender identity or expression, na
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        MMC Corporate - We are looking for a talented and motivated individual to join our Cloud Platforms team at Marsh McLennan, based in Liverpool, United Kingdom. This is a hybrid role, requiring a minimum of three days per week in the office. * Operational Support for public cloud technology solutions, primarily focused on the AWS or Azure cloud platforms. * Obtain and maintain an in-depth understanding of AWS and Azure public cloud technologies to ensure all appropriate options are considered to support business initiatives. * Act as a consultant and subject matter expert for Project Managers, Developers, and Engineering teams, to resolve technical obstacles and improve the product's vision. * Work closely with multiple Project Management and Software Engineering teams on understanding ways to improve IaaS and PaaS service offerings.
        MMC Corporate - We are looking for a talented and motivated individual to join our Cloud Platforms team at Marsh McLennan, based in Liverpool, United Kingdom. This is a hybrid role, requiring a minimum of three days per week in the office. * Operational Support for public cloud technology solutions, primarily focused on the AWS or Azure cloud platforms. * Obtain and maintain an in-depth understanding of AWS and Azure public cloud technologies to ensure all appropriate options are considered to support business initiatives. * Act as a consultant and subject matter expert for Project Managers, Developers, and Engineering teams, to resolve technical obstacles and improve the product's vision. * Work closely with multiple Project Management and Software Engineering teams on understanding ways to improve IaaS and PaaS service offerings.
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        294 exact matches jobs are outside your preferred location

        £70-90k + Benefits - 2 days on site in North London - 3 days remote - I am recruting for a talented and driven Backend Engineer to join a dynamic team, focused on the creation and deployment of innovative software solutions. As a Backend Engineer, you will work closely with cross-functional teams, including engineering, product management, design, and quality assurance, to develop cutting-edge features that power our platform. * Collaborate with cross-functional teams: Contribute to the development of new features by working alongside engineering, product management, design, and QA teams. * Promote best practices: Advocate and enforce coding standards, architectural patterns, and best practices. Your in-depth knowledge of backend technologies will help guide and support your peers, ensuring high-quality code.
        £70-90k + Benefits - 2 days on site in North London - 3 days remote - I am recruting for a talented and driven Backend Engineer to join a dynamic team, focused on the creation and deployment of innovative software solutions. As a Backend Engineer, you will work closely with cross-functional teams, including engineering, product management, design, and quality assurance, to develop cutting-edge features that power our platform. * Collaborate with cross-functional teams: Contribute to the development of new features by working alongside engineering, product management, design, and QA teams. * Promote best practices: Advocate and enforce coding standards, architectural patterns, and best practices. Your in-depth knowledge of backend technologies will help guide and support your peers, ensuring high-quality code.
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        PREMIUM
        Are you an experienced .Net (C#) Developer, with some solid experience in API development, looking to take on your next Software Engineering role in a growing SaaS product company? Keen to grow your technical skills around .Net 8 / C# / API & MySQL development & look into new Generative AI / LLM dev' tools, too? Job title: .Net (C#) API Developer - But basically, if you have solid experience in .Net (C#) & solid experience in ASP.Net core WebAPI (RESTful API), then we'd like to hear from you! - ASP.NET Core MVC and Web API. - Understanding of API versioning, documentation (e.g., Swagger), and security best practices.
        Are you an experienced .Net (C#) Developer, with some solid experience in API development, looking to take on your next Software Engineering role in a growing SaaS product company? Keen to grow your technical skills around .Net 8 / C# / API & MySQL development & look into new Generative AI / LLM dev' tools, too? Job title: .Net (C#) API Developer - But basically, if you have solid experience in .Net (C#) & solid experience in ASP.Net core WebAPI (RESTful API), then we'd like to hear from you! - ASP.NET Core MVC and Web API. - Understanding of API versioning, documentation (e.g., Swagger), and security best practices.
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        NEWFEATURED

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        Frequently Asked Questions

        How many permanent API jobs are there in Hatfield?
        There are 95 permanent API jobs within 20 miles of Hatfield available on CWJobs right now.

        What other similar jobs are there to permanent API jobs in Hatfield?
        As well as permanent API jobs in Hatfield, you can find permanent IT, Software Development, Management, amongst many others.