Date posted
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Locations
Locations
Salaries
Date posted
Type of Company
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Design, build, and manage API integrations between HubSpot and other business-critical systems. * Hands-on experience with API integrations and working with third-party tools.
Design, build, and manage API integrations between HubSpot and other business-critical systems. * Hands-on experience with API integrations and working with third-party tools.
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Contribute to backend/API testing and assist with security testing initiatives * Strong knowledge of API testing and backend system validation
Contribute to backend/API testing and assist with security testing initiatives * Strong knowledge of API testing and backend system validation
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70 exact matches jobs are outside your preferred location
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About the Business - Quilter plc is a leading wealth management business, helping to enable brighter financial futures for every generation. Quilter oversees £126.3 billion in customer investments (as of August 2025). It has an adviser and customer offering spanning financial advice, investment platforms, multi-asset investment solutions, and discretionary fund management. The business is comprised of two segments: Affluent and High Net Worth. Affluent encompasses the financial planning business, Quilter Financial Planning, the Quilter Investment Platform and Quilter Investors, the multi-asset investment solutions business. High Net Worth includes the discretionary fund management business, Quilter Cheviot, together with Quilter Cheviot Financial Planning offering a highly personalised service to private clients, charities, trustees, and professional partners.
About the Business - Quilter plc is a leading wealth management business, helping to enable brighter financial futures for every generation. Quilter oversees £126.3 billion in customer investments (as of August 2025). It has an adviser and customer offering spanning financial advice, investment platforms, multi-asset investment solutions, and discretionary fund management. The business is comprised of two segments: Affluent and High Net Worth. Affluent encompasses the financial planning business, Quilter Financial Planning, the Quilter Investment Platform and Quilter Investors, the multi-asset investment solutions business. High Net Worth includes the discretionary fund management business, Quilter Cheviot, together with Quilter Cheviot Financial Planning offering a highly personalised service to private clients, charities, trustees, and professional partners.
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Are you a C++ Software Developer? Do you have a minimum of 12 months commercial experience? If yes, then read on, and let us tell you why Synertec is adding real value into the Public and Commercial Sectors. Location: Wellington, Somerset OR Bristol, OR Milton Keynes - Salary: £40,196.18 - £51,680.11 DOE - Core Benefits: Hybrid Working Policy (2 days maximum in office), 25 days holiday rising to 30 (plus Bank Holidays), Company Pension Scheme (8% employer contribution) Health Cash Plan (after completion of Probationary Period) Embark on your journey with confidence through our Comprehensive Induction and Training Program. We invest in your professional development from day one, providing the tools and knowledge to excel in your role. Join us and experience a workplace that values your individuality and prioritises your well-being.
Are you a C++ Software Developer? Do you have a minimum of 12 months commercial experience? If yes, then read on, and let us tell you why Synertec is adding real value into the Public and Commercial Sectors. Location: Wellington, Somerset OR Bristol, OR Milton Keynes - Salary: £40,196.18 - £51,680.11 DOE - Core Benefits: Hybrid Working Policy (2 days maximum in office), 25 days holiday rising to 30 (plus Bank Holidays), Company Pension Scheme (8% employer contribution) Health Cash Plan (after completion of Probationary Period) Embark on your journey with confidence through our Comprehensive Induction and Training Program. We invest in your professional development from day one, providing the tools and knowledge to excel in your role. Join us and experience a workplace that values your individuality and prioritises your well-being.
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You will lead end-to-end development of scalable web applications using ReactJS, React Native, .NET, and Azure, including API design and IoT integrations. * REST/GraphQL API development.
You will lead end-to-end development of scalable web applications using ReactJS, React Native, .NET, and Azure, including API design and IoT integrations. * REST/GraphQL API development.
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Front-End Developer, React.js, Hybrid, COR7367
Front-End Developer, React.js, Hybrid, COR7367
Corriculo Ltd
CV31, Leamington Spa
£65k - 80k per year + Benefits
Working closely with back-end teams, you’ll ensure seamless API integrations while optimising applications for performance, accessibility, and user experience. * Familiarity with TypeScript and RESTful API integration
Working closely with back-end teams, you’ll ensure seamless API integrations while optimising applications for performance, accessibility, and user experience. * Familiarity with TypeScript and RESTful API integration
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Keywords: WordPress Developer, PHP Developer, Front End Developer, Web Developer, HTML, CSS, JavaScript, Git, API, Accessibility, Digital Agency.
Keywords: WordPress Developer, PHP Developer, Front End Developer, Web Developer, HTML, CSS, JavaScript, Git, API, Accessibility, Digital Agency.
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Senior Back-End Developer, Java Spring Boot, Hybrid, COR7370
Senior Back-End Developer, Java Spring Boot, Hybrid, COR7370
Corriculo Ltd
CV31, Leamington Spa
£65k - 80k per year + Benefits
A solid understanding of RESTful API development and microservices
A solid understanding of RESTful API development and microservices
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Handle API integrations, DNS management, and web service configurations. * Deep understanding of API integrations, DNS management, and web service configurations.
Handle API integrations, DNS management, and web service configurations. * Deep understanding of API integrations, DNS management, and web service configurations.
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Senior Software Engineer for Southampton based organisation
Senior Software Engineer for Southampton based organisation
Claremont Consulting
SO14, Southampton
£55000.00 - £66000.00 per annum + Many benefits, superb pension
Technical knowledge and experience in producing resilient services to provide API services to front end systems.
Technical knowledge and experience in producing resilient services to provide API services to front end systems.
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Lead .Net Software Developer
Lead .Net Software Developer
Hireful
Milton Keynes, Buckinghamshire
£65k - £75k base salary plus Bonus and awesome benefits
Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer - Salary: £65k - £75k base + Bonus - Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more - Location: Milton Keynes – Hybrid (2 days a week in office) If you’ve got strong .Net (C#) experience and skills in GitHub, APIs, Pos
Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer - Salary: £65k - £75k base + Bonus - Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more - Location: Milton Keynes – Hybrid (2 days a week in office) If you’ve got strong .Net (C#) experience and skills in GitHub, APIs, Pos
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Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
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Toolbox Management: Handle data repair jobs across all client sites, create new sites, configure exports, and set up API and ADV3 accounts.
Toolbox Management: Handle data repair jobs across all client sites, create new sites, configure exports, and set up API and ADV3 accounts.
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Job Title: Solution Architect - Location: Windsor, UK - Work Model: Hybrid (1 day per week in office) Job Type: Contract (Inside IR35) Duration: 6 Months - We are seeking an experienced Solution Architect to join our team in Windsor. You will play a key role in defining, communicating, and implementing strategic technology standards and roadmaps, ensuring robust and scalable solutions for business transformation initiatives. This is a hybrid role requiring one day per week in the office. * Identify, publish, and communicate strategic technology standards, frameworks, principles, and roadmaps to guide technology decisions and leverage efficiency opportunities. * Analyze the impact of implementing new technologies into the IT infrastructure. * Assist Solution Architects, Product Specialists, and Project Managers in matching technology services to specific business servi
Job Title: Solution Architect - Location: Windsor, UK - Work Model: Hybrid (1 day per week in office) Job Type: Contract (Inside IR35) Duration: 6 Months - We are seeking an experienced Solution Architect to join our team in Windsor. You will play a key role in defining, communicating, and implementing strategic technology standards and roadmaps, ensuring robust and scalable solutions for business transformation initiatives. This is a hybrid role requiring one day per week in the office. * Identify, publish, and communicate strategic technology standards, frameworks, principles, and roadmaps to guide technology decisions and leverage efficiency opportunities. * Analyze the impact of implementing new technologies into the IT infrastructure. * Assist Solution Architects, Product Specialists, and Project Managers in matching technology services to specific business servi
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Experience creating RESTful APIs and ensuring API extensibility?
Experience creating RESTful APIs and ensuring API extensibility?
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Software Engineer with AI Integration
Software Engineer with AI Integration
Alexander Mae (Bristol) Ltd
BS1, Bristol
From £30,000 to £35,000 per annum
Integrate external AI services (e.g., OpenAI API) into prototypes and production features.
Integrate external AI services (e.g., OpenAI API) into prototypes and production features.
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Senior Software Engineer - Pensions, ISA and Investments
Senior Software Engineer - Pensions, ISA and Investments
Hargreaves Lansdown
BS1, Bristol
£65000 - £80000 per annum + generous bonus, pension and more
Understanding of Microservices & principles of RESTful API development, including structuring, documenting, versioning, testing and stubbing/mocking.
Understanding of Microservices & principles of RESTful API development, including structuring, documenting, versioning, testing and stubbing/mocking.
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Familiarity with API Security, Container Security, AWS Cloud Security
Familiarity with API Security, Container Security, AWS Cloud Security
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Strong hands-on experience with Microsoft Azure core services (networking, compute, storage) and platform services (AKS, App Services, API Management, Event Hub/Service Bus).
Strong hands-on experience with Microsoft Azure core services (networking, compute, storage) and platform services (AKS, App Services, API Management, Event Hub/Service Bus).
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Backend Developer - Java/Spring Boot - Warwickshire - Permanent
Backend Developer - Java/Spring Boot - Warwickshire - Permanent
Crimson
CV31, Leamington Spa
£55000 - £65000 per annum
Hybrid working - this opportunity requires 2-3 days / week on site in Warwickshire - Competitive salary offering - Backend Developer required for a leading client based in Warwickshire. You will come on board to design, build and optimise scalable services and APIs, relating to AI-based applications, ensuring seamless integration with the frontend. * Develop scalable server-side applications using Java Spring Boot and microservices architecture. * Build secure, high-performance RESTful APIs to support front-end integration. * Design and optimize relational databases (MySQL, PostgreSQL) for efficient data management. * Resolve performance bottlenecks and enhance system scalability and reliability. * Apply best practices in code quality, testing (JUnit, Mockito), and CI/CD pipelines. * Collaborate with cross-functional teams to deliver cohesive, end-to-end solutions.
Hybrid working - this opportunity requires 2-3 days / week on site in Warwickshire - Competitive salary offering - Backend Developer required for a leading client based in Warwickshire. You will come on board to design, build and optimise scalable services and APIs, relating to AI-based applications, ensuring seamless integration with the frontend. * Develop scalable server-side applications using Java Spring Boot and microservices architecture. * Build secure, high-performance RESTful APIs to support front-end integration. * Design and optimize relational databases (MySQL, PostgreSQL) for efficient data management. * Resolve performance bottlenecks and enhance system scalability and reliability. * Apply best practices in code quality, testing (JUnit, Mockito), and CI/CD pipelines. * Collaborate with cross-functional teams to deliver cohesive, end-to-end solutions.
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Lead Data & Machine Learning Architect
Lead Data & Machine Learning Architect
ZENOVO LTD
Beeches Industrial Estate, BS37 5JF
Up to £60,000 (depending on experience)
Job Title: Lead Data & Machine Learning Architect - Location: Yate (On-Site 2 Days Per Week) Salary: Up to £60,000 (Depending on Experience) This is a chance to join a team who are creating an Energy Management Solutions to minimise energy cost & increase higher returns from energy assets. We are seeking a highly skilled Lead Data & Machine Learning Architect to design and lead the development of robust data and machine learning systems. You will take ownership of the data architecture, drive the development and deployment of machine learning models, and contribute to the strategic use of data across the organisation. Data Architecture * Schema & Model Ownership: Design, implement, and maintain logical and physical data models, primarily using PostgreSQL. * Data Integration: Build and manage robust data pipelines to ingest, clean, and unify data from APIs, sensors, an
Job Title: Lead Data & Machine Learning Architect - Location: Yate (On-Site 2 Days Per Week) Salary: Up to £60,000 (Depending on Experience) This is a chance to join a team who are creating an Energy Management Solutions to minimise energy cost & increase higher returns from energy assets. We are seeking a highly skilled Lead Data & Machine Learning Architect to design and lead the development of robust data and machine learning systems. You will take ownership of the data architecture, drive the development and deployment of machine learning models, and contribute to the strategic use of data across the organisation. Data Architecture * Schema & Model Ownership: Design, implement, and maintain logical and physical data models, primarily using PostgreSQL. * Data Integration: Build and manage robust data pipelines to ingest, clean, and unify data from APIs, sensors, an
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Title:Software Developer - Location:Berkshire - Work Model:Hybrid - Were partnering with a European technology company that provides secure connectivity and data solutions across multiple sectors. Theyre looking to bring a Software Developer into their expanding team. Youll work closely with other developers and support staff, helping to develop and support a new C# communications platform. This platform is responsible for the aggregation, transformation, and delivery of critical alarm signals. Key Responsibilities - Create and maintain APIs for platform management -Actively participate in an Agile development team -Conduct testing, verification, and troubleshooting -Provide 3rd-line support to 1st-line support teams -Ensure compliance with industry standards and regulations in software designs -Document design specifications, test procedures, and project updates - Ke
Title:Software Developer - Location:Berkshire - Work Model:Hybrid - Were partnering with a European technology company that provides secure connectivity and data solutions across multiple sectors. Theyre looking to bring a Software Developer into their expanding team. Youll work closely with other developers and support staff, helping to develop and support a new C# communications platform. This platform is responsible for the aggregation, transformation, and delivery of critical alarm signals. Key Responsibilities - Create and maintain APIs for platform management -Actively participate in an Agile development team -Conduct testing, verification, and troubleshooting -Provide 3rd-line support to 1st-line support teams -Ensure compliance with industry standards and regulations in software designs -Document design specifications, test procedures, and project updates - Ke
We are looking for a motivated and detail-oriented Software Engineer to join our development team. You will have hands-on experience with Java development, Spring framework, relational databases, and a strong desire to grow their technical skills while contributing to Cegeka software solutions. Responsibilities * Design, develop, test, and maintain Java-based applications using the Spring framework. * Write efficient, reliable, and maintainable code that adheres to best practices. * Work with SQL databases (e.g., MySQL, PostgreSQL, Oracle) to design schemas, write queries, and optimise performance. * Collaborate with senior engineers to implement new features and fix bugs. * Participate in code reviews and contribute to improving coding standards. * Assist in troubleshooting, debugging, and performance tuning of applications.
We are looking for a motivated and detail-oriented Software Engineer to join our development team. You will have hands-on experience with Java development, Spring framework, relational databases, and a strong desire to grow their technical skills while contributing to Cegeka software solutions. Responsibilities * Design, develop, test, and maintain Java-based applications using the Spring framework. * Write efficient, reliable, and maintainable code that adheres to best practices. * Work with SQL databases (e.g., MySQL, PostgreSQL, Oracle) to design schemas, write queries, and optimise performance. * Collaborate with senior engineers to implement new features and fix bugs. * Participate in code reviews and contribute to improving coding standards. * Assist in troubleshooting, debugging, and performance tuning of applications.
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Frontend Developer - React.js - Warwickshire - Permanent
Frontend Developer - React.js - Warwickshire - Permanent
Crimson
CV31, Leamington Spa
£55000 - £65000 per annum
Hybrid working - Warwickshire - Salary - £55,000 - £65,000 per annum - Frontend Developer required for a leading client based in Warwickshire. You will come on board to focus on the design and development of scalable UI interfaces relating to AI-powered automation products and solutions. * Skilled in designing and building responsive, high-performance applications using React.js, JavaScript (ES6+), HTML5, and CSS3. * Experienced in integrating RESTful APIs and collaborating with back-end teams to ensure seamless data flow. * Proficient in creating reusable, modular components with scalable and maintainable code architecture. * Strong focus on performance, accessibility (WCAG), and user experience, leveraging tools like Material-UI and Tailwind CSS. * Familiar with TypeScript, modern build tools (Webpack, Babel, Vite), and testing frameworks (Jest, React Testing Librar
Hybrid working - Warwickshire - Salary - £55,000 - £65,000 per annum - Frontend Developer required for a leading client based in Warwickshire. You will come on board to focus on the design and development of scalable UI interfaces relating to AI-powered automation products and solutions. * Skilled in designing and building responsive, high-performance applications using React.js, JavaScript (ES6+), HTML5, and CSS3. * Experienced in integrating RESTful APIs and collaborating with back-end teams to ensure seamless data flow. * Proficient in creating reusable, modular components with scalable and maintainable code architecture. * Strong focus on performance, accessibility (WCAG), and user experience, leveraging tools like Material-UI and Tailwind CSS. * Familiar with TypeScript, modern build tools (Webpack, Babel, Vite), and testing frameworks (Jest, React Testing Librar
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Senior Full Stack Engineer
Senior Full Stack Engineer
Spectrum It Recruitment Limited
SO14, Southampton
£60000.00 - £650000 per annum + plus hybrid working and benefits
Senior Full Stack Developer * Salary Negotiable * Hybrid working 2 - 3 days in Southampton, Hampshire * OOP, PHP, Laravel, VueJS - Our client is a fast-growing, founder led, digital healthcare company experiencing rapid growth. They are looking for a talented Senior Full Stack Developer to work with the Head of Development & senior leadership to help strengthen the development and delivery team. This role is primarily focused on the back-end (Laravel/PHP) side, but with solid front-end experience, ideally in Vue.js. Within the space of 4 years the business has developed a leading healthcare home testing service, capitalised on changing market demands and launched a new healthcare product experiencing significant and rapid growth in subscriber numbers. You will help with the development and mentorship of mid-level developers while also being able to collaborate effecti
Senior Full Stack Developer * Salary Negotiable * Hybrid working 2 - 3 days in Southampton, Hampshire * OOP, PHP, Laravel, VueJS - Our client is a fast-growing, founder led, digital healthcare company experiencing rapid growth. They are looking for a talented Senior Full Stack Developer to work with the Head of Development & senior leadership to help strengthen the development and delivery team. This role is primarily focused on the back-end (Laravel/PHP) side, but with solid front-end experience, ideally in Vue.js. Within the space of 4 years the business has developed a leading healthcare home testing service, capitalised on changing market demands and launched a new healthcare product experiencing significant and rapid growth in subscriber numbers. You will help with the development and mentorship of mid-level developers while also being able to collaborate effecti
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