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15 Permanent API jobs in West Sussex + 20 miles
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Experience in creating front end and API automated test projects
Experience in creating front end and API automated test projects
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Validate API services using Postman and interpret HTTP error codes for backend integration
Validate API services using Postman and interpret HTTP error codes for backend integration
FEATURED
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Senior Software Engineer - C++
Senior Software Engineer - C++
MaxAd
Causeway, Petersfield (GU31), GU31
£58000.00 - £63000.00 per annum + Excellent Benefits
API fundamentals * Python and Bash
API fundamentals * Python and Bash
MS Power Platform Developer with AI Chatbot - Location: Esher (two days WFH) Salary: c.£50K - £60K - This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power
MS Power Platform Developer with AI Chatbot - Location: Esher (two days WFH) Salary: c.£50K - £60K - This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power
Gatwick (1-2 days per week in office) £65-75k + Benefits. Your new company - This leading financial and consulting business are looking to bolster their engineering team with a Senior Full Stack .Net Developer to join their core team of 16 Devs. You will be working in their state-of-the-art offices near to Gatwick/Crawley and will be required to work 1-2 days per week in the office. Your new role - This is a full-stack, full software lifecycle role where Devs are encouraged to bring ideas to the table and challenge the status quo. From architecture and development through to deployment you'll play a key role in building cutting-edge solutions by developing .NET microservices and dynamic Angular front-end applications (we can consider React cross-training to Angular). Working in a collaborative Agile environment, you'll partner with product owners, QA engineers, and fe
Gatwick (1-2 days per week in office) £65-75k + Benefits. Your new company - This leading financial and consulting business are looking to bolster their engineering team with a Senior Full Stack .Net Developer to join their core team of 16 Devs. You will be working in their state-of-the-art offices near to Gatwick/Crawley and will be required to work 1-2 days per week in the office. Your new role - This is a full-stack, full software lifecycle role where Devs are encouraged to bring ideas to the table and challenge the status quo. From architecture and development through to deployment you'll play a key role in building cutting-edge solutions by developing .NET microservices and dynamic Angular front-end applications (we can consider React cross-training to Angular). Working in a collaborative Agile environment, you'll partner with product owners, QA engineers, and fe
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Location: Epsom - Salary: Competitive - Team: 4 direct reports, with opportunity to grow * Hybrid working (2 days office / 3 days remote) * Private medical cover * Excellent pension contributions and bonus scheme * Car scheme for employees & family wellbeing support * 25+ days holiday plus volunteering leave * Onsite gym & other great facilities * Flexible working and extensive training options - We're looking for a driven, hands-on Data Services Team Lead / Manager to guide a team of data engineers, oversee daily operations and deliver high-quality data solutions for a well-established local client. The ideal individual is someone who enjoys being technical whilst also inspiring and developing their team. This role would also be a great opportunity for a Data Engineer who has led projects and is ready to step into a leadership position.
Location: Epsom - Salary: Competitive - Team: 4 direct reports, with opportunity to grow * Hybrid working (2 days office / 3 days remote) * Private medical cover * Excellent pension contributions and bonus scheme * Car scheme for employees & family wellbeing support * 25+ days holiday plus volunteering leave * Onsite gym & other great facilities * Flexible working and extensive training options - We're looking for a driven, hands-on Data Services Team Lead / Manager to guide a team of data engineers, oversee daily operations and deliver high-quality data solutions for a well-established local client. The ideal individual is someone who enjoys being technical whilst also inspiring and developing their team. This role would also be a great opportunity for a Data Engineer who has led projects and is ready to step into a leadership position.
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Full Stack .Net Developer (Angular v20/.Net 8 Microservices)
Full Stack .Net Developer (Angular v20/.Net 8 Microservices)
Hays
Gatwick (RH6)
£40000 - £55000 per annum + £40-55k + Benefits
Full Stack .Net Developer (Angular v20 and .NET 8 Microservices) Gatwick (2 days per week in office) £40-55k + Benefits. Your new company - This leading financial and consulting business are looking to bolster their engineering team with a Full Stack .Net Developer to join their core team of 16 Devs. You will be working in their state-of-the-art offices near to Gatwick/Crawley and will be required to work 2 days per week in the office. Your new role - This is a full-stack, full software lifecycle role where Devs are encouraged to bring ideas to the table and challenge the status quo. From architecture and development through to deployment you'll play a key role in building cutting-edge solutions by developing .NET microservices and dynamic Angular front-end applications. Working in a collaborative Agile environment, you'll partner with product owners, QA engineers, an
Full Stack .Net Developer (Angular v20 and .NET 8 Microservices) Gatwick (2 days per week in office) £40-55k + Benefits. Your new company - This leading financial and consulting business are looking to bolster their engineering team with a Full Stack .Net Developer to join their core team of 16 Devs. You will be working in their state-of-the-art offices near to Gatwick/Crawley and will be required to work 2 days per week in the office. Your new role - This is a full-stack, full software lifecycle role where Devs are encouraged to bring ideas to the table and challenge the status quo. From architecture and development through to deployment you'll play a key role in building cutting-edge solutions by developing .NET microservices and dynamic Angular front-end applications. Working in a collaborative Agile environment, you'll partner with product owners, QA engineers, an
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Fixed Term - Logistics - Havant - About the Role - Salary: £52,000 £60,000 + Excellent Benefits - Working Pattern: 37.5 hours per week | 4 day working week Monday to Thursday | Remote working but required to come to the office when needed. Location: Havant, Portsmouth. Here at Lockheed Martin we are seeking a Logistics Software Engineer to enhance its software development capability and provide ongoing support for a suite of applications used by both internal stakeholders and Ministry of Defence (MoD) customers. This role requires an experienced and innovative professional who can assume ownership of both new and existing development projects. The successful candidate will be capable of defining technical requirements, managing development tasks, and delivering high-quality software solutions that meet or exceed customer expectations. Key Responsibilities
Fixed Term - Logistics - Havant - About the Role - Salary: £52,000 £60,000 + Excellent Benefits - Working Pattern: 37.5 hours per week | 4 day working week Monday to Thursday | Remote working but required to come to the office when needed. Location: Havant, Portsmouth. Here at Lockheed Martin we are seeking a Logistics Software Engineer to enhance its software development capability and provide ongoing support for a suite of applications used by both internal stakeholders and Ministry of Defence (MoD) customers. This role requires an experienced and innovative professional who can assume ownership of both new and existing development projects. The successful candidate will be capable of defining technical requirements, managing development tasks, and delivering high-quality software solutions that meet or exceed customer expectations. Key Responsibilities
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Chichester / Fernhurst (Hybrid: 1 day WFH) | Up to £60k DOE - Liberty Recruitment Group is proud to partner with our luxury manufacturing client in their search for a Group Business Central Analyst. This newly created role offers the chance to take full ownership of the Dynamics 365 Business Central system across multiple entities. Youll play a key role in consolidating three separate BC instances, improving system architecture, reducing reliance on third-party extensions, and enhancing automation, integration, and reporting. * Develop and support BC functionality using AL coding, APIs, and Power Platform tools * Lead the consolidation of multiple BC systems into one streamlined solution * Collaborate with internal teams to automate processes and reduce manual work * Manage RBAC and enhance system security * Upskill users and act as the in-house BC expert
Chichester / Fernhurst (Hybrid: 1 day WFH) | Up to £60k DOE - Liberty Recruitment Group is proud to partner with our luxury manufacturing client in their search for a Group Business Central Analyst. This newly created role offers the chance to take full ownership of the Dynamics 365 Business Central system across multiple entities. Youll play a key role in consolidating three separate BC instances, improving system architecture, reducing reliance on third-party extensions, and enhancing automation, integration, and reporting. * Develop and support BC functionality using AL coding, APIs, and Power Platform tools * Lead the consolidation of multiple BC systems into one streamlined solution * Collaborate with internal teams to automate processes and reduce manual work * Manage RBAC and enhance system security * Upskill users and act as the in-house BC expert
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Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000-£70,000 DOE - Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. * Designing, building, and maintaining iOS applications in Swift * Creating clean, modern UIs with SwiftUI * Applying SOLID principles to write scalable, maintainable code * Working with RESTful APIs to integrate app functionality * Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation * Collaborating with cross-functional teams on exciting projects * Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office culture and you will have the opportunity to work on div
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000-£70,000 DOE - Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. * Designing, building, and maintaining iOS applications in Swift * Creating clean, modern UIs with SwiftUI * Applying SOLID principles to write scalable, maintainable code * Working with RESTful APIs to integrate app functionality * Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation * Collaborating with cross-functional teams on exciting projects * Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office culture and you will have the opportunity to work on div
A Senior Software Engineer is sought to join a progressive, collaborative development team based in Brighton. As the business embarks on a journey to modernise its technology stack and enhance the user experience, this role offers the chance to make a real impact helping to shape how the platform evolves and performs in the next stage of its journey. This is an excellent opportunity to join a close-knit team where your ideas will be valued and your work will have visible impact. Youll be involved across the full product lifecycle from shaping new features to refining existing functionality. The team typically works three days per week from the Brighton office with hybrid flexibility for the remainder of the week. Develop and maintain core product features using PHP (Laravel) Support and integrate third-party tools such as HubSpot and Stripe
A Senior Software Engineer is sought to join a progressive, collaborative development team based in Brighton. As the business embarks on a journey to modernise its technology stack and enhance the user experience, this role offers the chance to make a real impact helping to shape how the platform evolves and performs in the next stage of its journey. This is an excellent opportunity to join a close-knit team where your ideas will be valued and your work will have visible impact. Youll be involved across the full product lifecycle from shaping new features to refining existing functionality. The team typically works three days per week from the Brighton office with hybrid flexibility for the remainder of the week. Develop and maintain core product features using PHP (Laravel) Support and integrate third-party tools such as HubSpot and Stripe
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This is a newly created position for a Dynamics 365 Analyst with solid integration & configuration experience to join a global leading firm based in the East Grinstead area of West Sussex. This role is paying £45,000 and offers hybrid working (3 days in the office, 2 days from home). To be considered for this position you will have a good understanding and experience of Dynamics 365 & ERP platforms. This will include integration, configuring and upgrading D365 modules, APIs, and web services (REST & Soap). Based in the East Grinstead area of West Sussex, my client is offering a salary of £45,000 in a hybrid work environment (3 days in the office and 2 days from home), and the chance to work on the latest ERP technologies. If you have previous experience with Dynamics 365 and you are looking for a new position, please send me your CV immediately.
This is a newly created position for a Dynamics 365 Analyst with solid integration & configuration experience to join a global leading firm based in the East Grinstead area of West Sussex. This role is paying £45,000 and offers hybrid working (3 days in the office, 2 days from home). To be considered for this position you will have a good understanding and experience of Dynamics 365 & ERP platforms. This will include integration, configuring and upgrading D365 modules, APIs, and web services (REST & Soap). Based in the East Grinstead area of West Sussex, my client is offering a salary of £45,000 in a hybrid work environment (3 days in the office and 2 days from home), and the chance to work on the latest ERP technologies. If you have previous experience with Dynamics 365 and you are looking for a new position, please send me your CV immediately.
FEATURED
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.Net Developer
.Net Developer
Crowd Link Consulting Ltd
Woking (GU21)
From £45,000 to £60,000 per annum Salary + Benefits + Bonus
Web API, HTML, CSS, Web Services, JQuery and JavaScript
Web API, HTML, CSS, Web Services, JQuery and JavaScript
Proven track record and strong experience in software engineering, including experience in API and UI development.
Proven track record and strong experience in software engineering, including experience in API and UI development.
Neos Networks offers alternative working arrangements that give employees some flexibility, including office, home and hybrid working. Base location: Havant with hybrid working 2 days per week in the office - Salary: £ to £69,600 dep on experience + performance related bonus + a range of other benefits to support your family, finances, and wellbeing. Working Pattern: Permanent Full time 37 hours per week - Role Purpose - The Application Support Engineer delivers operational and administrative support for Neos Networks monitoring and service management platforms, primarily Splunk and ServiceNow. Key responsibilities include maintaining dashboards that visualise network health, managing data ingestion from infrastructure devices (e.g. switches, routers, firewalls, Power & Environmental services, etc), scripting automation to enhance alerting and response, and supporting
Neos Networks offers alternative working arrangements that give employees some flexibility, including office, home and hybrid working. Base location: Havant with hybrid working 2 days per week in the office - Salary: £ to £69,600 dep on experience + performance related bonus + a range of other benefits to support your family, finances, and wellbeing. Working Pattern: Permanent Full time 37 hours per week - Role Purpose - The Application Support Engineer delivers operational and administrative support for Neos Networks monitoring and service management platforms, primarily Splunk and ServiceNow. Key responsibilities include maintaining dashboards that visualise network health, managing data ingestion from infrastructure devices (e.g. switches, routers, firewalls, Power & Environmental services, etc), scripting automation to enhance alerting and response, and supporting
382 exact matches jobs are outside your preferred location
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Senior Backend Engineer TypeScript Node API
Senior Backend Engineer TypeScript Node API
Client Server
The City, City of London (EC4), EC2V
£85000 - £100000 per annum + shares + benefits
Senior Backend Engineer / Developer (TypeScript Node API) London / WFH to £100k
Senior Backend Engineer / Developer (TypeScript Node API) London / WFH to £100k
NEWPREMIUM
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Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
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Product management, within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from discovery through delivery and iteration for Clients API providers. * Define the long-term vision and strategy for API products, focusing on the needs of developers, clinicians, and patients. * Proven experience in product management, ideally within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from
Product management, within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from discovery through delivery and iteration for Clients API providers. * Define the long-term vision and strategy for API products, focusing on the needs of developers, clinicians, and patients. * Proven experience in product management, ideally within digital services or public sector environments experienced with Apigee (preferred) or similar API management platforms, including API publishing, monitoring, and access control. * Lead the end-to-end product lifecycle for the onboarding service, from
TypeScript Developer Full Stack - Fintech
TypeScript Developer Full Stack - Fintech
Client Server
Shoreditch, East London (E1), EC2A
£50000 - £60000 per annum + benefits
TypeScript Developer / Engineer (Full Stack API React) London / WFH to £60k - Apply now to find out more about this TypeScript Developer / Engineer (Full Stack API React) opportunity.
TypeScript Developer / Engineer (Full Stack API React) London / WFH to £60k - Apply now to find out more about this TypeScript Developer / Engineer (Full Stack API React) opportunity.
PREMIUM
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Senior Service Management & Integration Solution Architect
Senior Service Management & Integration Solution Architect
DXC Technology
London
Unspecified Competitive Salary & Benefits
Extensive knowledge and experience with modern ITSM tools, ITIL and API technologies, solutions, and architectures. * Service Integrations using API based policies
Extensive knowledge and experience with modern ITSM tools, ITIL and API technologies, solutions, and architectures. * Service Integrations using API based policies
PREMIUM
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API-first and integration platforms
API-first and integration platforms
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Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
Champion best practices across testing disciplines including unit, integration, UI, API, and performance * Knowledge of web, mobile, API/microservices testing and contract testing (e.g. PACT)
PREMIUM
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
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Senior .Net Integration Developer
Senior .Net Integration Developer
Rise Technical Recruitment Limited
Maidenhead (SL6)
£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
PREMIUM