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        17 Permanent API jobs in Belfast + 20 miles

        43 exact matches jobs are outside your preferred location

        Graph Database Specialist (Neo4j / PostGIS)

        Searchstone Ltd
        Europe
        From £70,000 to £92,000 per annum + Benefits, Strong Contractors Consi
        Strong API design for data-heavy systems
        Strong API design for data-heavy systems
        NEW

        Business Analyst

        TALENT INTERNATIONAL UK LTD
        UK
        £40000.00 - £45000.00 per year
        Technical Integration: Working closely with tech suppliers and using API testing tools to ensure seamless system performance. * Technical Toolkit: Experience with API testing tools (e.g., Postman, Insomnia) is essential. If you're a proactive BA who knows their way around an API and wants to see their work impact a national network every day, we want to hear from you.
        Technical Integration: Working closely with tech suppliers and using API testing tools to ensure seamless system performance. * Technical Toolkit: Experience with API testing tools (e.g., Postman, Insomnia) is essential. If you're a proactive BA who knows their way around an API and wants to see their work impact a national network every day, we want to hear from you.
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        Contract Solution Architect SaaS / Integration / Identity - Midlands (Hybrid Working) Up to £750 per day (Inside IR35) 6-Month Initial Contract | Immediate Start - Active SC Clearance Required - We are supporting a globally recognised engineering and technology organisation operating at the forefront of advanced aerospace, defence, and power systems. They are seeking an experienced Solution Architect to support a major enterprise SaaS platform programme within a highly secure environment. This role will be instrumental in designing end-to-end architectures and ensuring new platforms integrate securely and effectively within a complex enterprise landscape. As a Solution Architect, you will assess the current technology landscape and produce high-level architectural designs that enable secure and scalable SaaS platform implementations.
        Contract Solution Architect SaaS / Integration / Identity - Midlands (Hybrid Working) Up to £750 per day (Inside IR35) 6-Month Initial Contract | Immediate Start - Active SC Clearance Required - We are supporting a globally recognised engineering and technology organisation operating at the forefront of advanced aerospace, defence, and power systems. They are seeking an experienced Solution Architect to support a major enterprise SaaS platform programme within a highly secure environment. This role will be instrumental in designing end-to-end architectures and ensuring new platforms integrate securely and effectively within a complex enterprise landscape. As a Solution Architect, you will assess the current technology landscape and produce high-level architectural designs that enable secure and scalable SaaS platform implementations.
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        Job Title: Solutions Architect (Applications and Integration) Location: Remote (occasional travel to London required) Salary: £75,000 - £85,000 (Depending on location) Would you like to work for an organisation plays a pivotal role in safeguarding and improving the quality of health and social care services across England. My client plays a vital role in improving outcomes across health and social care by using data, technology, and insight to drive meaningful change. With a strong focus on innovation and digital transformation, they are investing in modern cloud platforms, artificial intelligence, and advanced analytics to become a truly intelligence-led regulator. Solutions Architect Responsibilities * Define and promote integration patterns and approaches (e.g. APIs, event-driven integration, messaging, batch, data synchronisation) appropriate to business needs.
        Job Title: Solutions Architect (Applications and Integration) Location: Remote (occasional travel to London required) Salary: £75,000 - £85,000 (Depending on location) Would you like to work for an organisation plays a pivotal role in safeguarding and improving the quality of health and social care services across England. My client plays a vital role in improving outcomes across health and social care by using data, technology, and insight to drive meaningful change. With a strong focus on innovation and digital transformation, they are investing in modern cloud platforms, artificial intelligence, and advanced analytics to become a truly intelligence-led regulator. Solutions Architect Responsibilities * Define and promote integration patterns and approaches (e.g. APIs, event-driven integration, messaging, batch, data synchronisation) appropriate to business needs.
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        Full Stack Web Developer

        Oscar Associates (UK) Limited
        UK
        £35000 - £45000 per annum
        Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
        Ful Stack Web Developer | £35,000 - £45,000 | Remote-first | Lancashire HQ (2-3 days onsite per year) I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They're looking for a Web Software Developer to join a collaborative internal engineering team responsible for building and improving these systems. This role offers the opportunity to work on business-critical applications used across the organisation, contributing to the development of modern web-based platforms while learning from experienced engineers in the team. The environment places a strong emphasis on clean code, structured development practices, and quality-focused ...
        more

        Full Stack Web Developer

        Oscar Associates (UK) Limited
        UK
        £45000 - £55000 per annum
        I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
        I'm working with an established UK organisation that is investing heavily in its in-house technology capability. The company is currently rebuilding and modernising a suite of internal software platforms, replacing legacy systems and developing new solutions to support core business processes. They are looking for a Senior Web Software Developer to join a small, collaborative internal engineering team responsible for designing and building these systems from the ground up. This role offers the opportunity to work on business-critical applications used across the organisation, helping shape the architecture and development standards as the company transitions to a modern web-based platform. The team places a strong emphasis on clean code, structured development practices, and quality-first engineering, and they are looking for someone who enjoys solving real-world ...
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        Senior Full Stack Engineer (Python Focused) Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
        Senior Full Stack Engineer (Python Focused) Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
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        Senior Full Stack Engineer - Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
        Senior Full Stack Engineer - Outisde IR35 up to £525 - Intial 6 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
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        Location: UK / Remote / Hybrid - Contract Type: Contract / Interim - About the Role - We are seeking Developers across multiple specialisms to join multidisciplinary digital teams within central government. You will help design, build and support high-quality, user-centred digital services delivered in line with GDS and modern engineering practices. Key Responsibilities * Build, test, deploy and iterate secure digital services across discovery, alpha, beta and live phases. * Collaborate closely with designers, user researchers, content designers, product managers and delivery teams to create user-centred solutions. * Apply government-wide accessibility and inclusive design standards to ensure services work for all users. * Support live service operations, including monitoring, troubleshooting and continual improvement.
        Location: UK / Remote / Hybrid - Contract Type: Contract / Interim - About the Role - We are seeking Developers across multiple specialisms to join multidisciplinary digital teams within central government. You will help design, build and support high-quality, user-centred digital services delivered in line with GDS and modern engineering practices. Key Responsibilities * Build, test, deploy and iterate secure digital services across discovery, alpha, beta and live phases. * Collaborate closely with designers, user researchers, content designers, product managers and delivery teams to create user-centred solutions. * Apply government-wide accessibility and inclusive design standards to ensure services work for all users. * Support live service operations, including monitoring, troubleshooting and continual improvement.
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        PREMIUM
        Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
        Job Title: Java Developer - Rate: £400 (InsideIR35) Duration: 12 Months - Location: Remote - Clearance: BPSS - Stages: 1 Stage - Must Have Government Experience - Key Responsibilities * Design, develop, and maintain Java applications in line with digital and engineering standards * Build and supportmicroservicesandRESTful APIs * Collaborate with product owners, designers, testers, and DevOps engineers in agile teams * Write clean, maintainable, and well-tested code (TDD/BDD where applicable) * Participate in code reviews and contribute to continuous improvement * Ensure applications meetsecurity, accessibility, and performancestandards * Troubleshoot and resolve defects across development and production environments * Support CI/CD pipelines and automated deployment processes - Essential Skills & Experience * Strong commercial experience withJava (Java 8+)
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        Location: Remote - Duration: 12 months with possible extension - Rate: Up to £550 per day via an approved umbrella company - Must be willing and eligible to go through the SC Clearance process - Our client, a reputable organisation in the IT sector, is hiring for a skilled SC Cleared Salesforce Developer to join a dynamic team on a 12-month contract, with the possibility of extension. This is an excellent opportunity to work on high-profile projects remotely, supporting critical infrastructure. * Developing and customising Salesforce solutions using Apex, Visualforce, and Lightning Components. * Designing and implementing Salesforce architecture, including data models, workflows, and business processes. * Configuring Salesforce environments, including setup, integrations, and customisations. * Troubleshooting complex technical issues and debugging code to ensure optimal performance.
        Location: Remote - Duration: 12 months with possible extension - Rate: Up to £550 per day via an approved umbrella company - Must be willing and eligible to go through the SC Clearance process - Our client, a reputable organisation in the IT sector, is hiring for a skilled SC Cleared Salesforce Developer to join a dynamic team on a 12-month contract, with the possibility of extension. This is an excellent opportunity to work on high-profile projects remotely, supporting critical infrastructure. * Developing and customising Salesforce solutions using Apex, Visualforce, and Lightning Components. * Designing and implementing Salesforce architecture, including data models, workflows, and business processes. * Configuring Salesforce environments, including setup, integrations, and customisations. * Troubleshooting complex technical issues and debugging code to ensure optimal performance.
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        FEATURED
        We are working with a well established engineering group seeking a Senior Fullstack Developer to support the continued development of their core operational and customer facing systems. This is a hands-on, delivery-focused role, where you will be actively building, improving and maintaining live systems used across the business. The role would suit a senior developer who enjoys staying close to the code, while supporting and mentoring a junior developer. You will contribute directly to customer portals, APIs and IoT integrations while contributing to technical decisions and supporting development best practice within the team. Key Duties and Responsibilities * Design, develop and deploy scalable web applications across frontend and backend environments using modern frameworks and cloud platforms.
        We are working with a well established engineering group seeking a Senior Fullstack Developer to support the continued development of their core operational and customer facing systems. This is a hands-on, delivery-focused role, where you will be actively building, improving and maintaining live systems used across the business. The role would suit a senior developer who enjoys staying close to the code, while supporting and mentoring a junior developer. You will contribute directly to customer portals, APIs and IoT integrations while contributing to technical decisions and supporting development best practice within the team. Key Duties and Responsibilities * Design, develop and deploy scalable web applications across frontend and backend environments using modern frameworks and cloud platforms.
        more
        Senior Fullstack Software Engineer UK Remote - Are you ready to put your technical expertise to work in transforming services that directly improve lives across the UK? Our client provides emergency accommodation and vital support for some of the countrys most vulnerable people including survivors of domestic abuse, refugees, and individuals seeking asylum. Their mission is to create safe environments and deliver innovative solutions that protect and empower those most in need. They are now looking for a Senior Software Engineerto take a key role in rebuilding and modernising their software landscape. This is a unique opportunity to shape critical systems that underpin essential frontline services. Whats on Offer * Fully remote within the UK * Salary up to £80,000 * 33 days annual leave * Pension & healthcare * A role with genuine social impact
        Senior Fullstack Software Engineer UK Remote - Are you ready to put your technical expertise to work in transforming services that directly improve lives across the UK? Our client provides emergency accommodation and vital support for some of the countrys most vulnerable people including survivors of domestic abuse, refugees, and individuals seeking asylum. Their mission is to create safe environments and deliver innovative solutions that protect and empower those most in need. They are now looking for a Senior Software Engineerto take a key role in rebuilding and modernising their software landscape. This is a unique opportunity to shape critical systems that underpin essential frontline services. Whats on Offer * Fully remote within the UK * Salary up to £80,000 * 33 days annual leave * Pension & healthcare * A role with genuine social impact
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        Microsoft Dynamics 365 Business Central Optimisation Consultant £50,000 - £60,000 + excellent benefits | Remote / Home Based - This is a newly created role focused on helping existing customers get real value from their ERP Systems, not just fixing issues but actively improving how they use it. Sitting in a new function between Support and Implementation, this role is all about optimisation. You'll work closely with customers to review how they're using D365 Business Central, identify gaps or inefficiencies, and deliver practical improvements through configuration, enhancements and small project work. You'll join a growing environment where support goes beyond ticket resolution. This position sits at the top end of the support capability, combining deep Business Central expertise with consultancy, small project delivery and continuous improvement across a varied customer ...
        Microsoft Dynamics 365 Business Central Optimisation Consultant £50,000 - £60,000 + excellent benefits | Remote / Home Based - This is a newly created role focused on helping existing customers get real value from their ERP Systems, not just fixing issues but actively improving how they use it. Sitting in a new function between Support and Implementation, this role is all about optimisation. You'll work closely with customers to review how they're using D365 Business Central, identify gaps or inefficiencies, and deliver practical improvements through configuration, enhancements and small project work. You'll join a growing environment where support goes beyond ticket resolution. This position sits at the top end of the support capability, combining deep Business Central expertise with consultancy, small project delivery and continuous improvement across a varied customer ...
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        FEATURED
        Location: Remote (UK / Europe) Rate: £400 £500 per day (Outside IR35) Duration: 6 Months - Start Date: ASAP - Company: 167 Solutions Ltd (on behalf of a global client) Overview - 167 Solutions Ltd is hiring a Salesforce Developer (Contract) to support a large-scale Salesforce transformation programme. This is a fully remote opportunity working within an enterprise environment across multiple Salesforce Clouds. Key Responsibilities * Design, develop and implement Salesforce solutions using Apex and Lightning Web Components (LWC) * Customise Salesforce across Sales Cloud, Service Cloud and Experience Cloud * Build and maintain integrations using REST/SOAP APIs * Work closely with Architects, Consultants and stakeholders to deliver scalable solutions * Support data migration, data modelling and system optimisation * Follow Salesforce best practices, CI/CD and deployment processes
        Location: Remote (UK / Europe) Rate: £400 £500 per day (Outside IR35) Duration: 6 Months - Start Date: ASAP - Company: 167 Solutions Ltd (on behalf of a global client) Overview - 167 Solutions Ltd is hiring a Salesforce Developer (Contract) to support a large-scale Salesforce transformation programme. This is a fully remote opportunity working within an enterprise environment across multiple Salesforce Clouds. Key Responsibilities * Design, develop and implement Salesforce solutions using Apex and Lightning Web Components (LWC) * Customise Salesforce across Sales Cloud, Service Cloud and Experience Cloud * Build and maintain integrations using REST/SOAP APIs * Work closely with Architects, Consultants and stakeholders to deliver scalable solutions * Support data migration, data modelling and system optimisation * Follow Salesforce best practices, CI/CD and deployment processes
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        £450 per day Fully Remote (UK-based) Occasional Out-of-Hours Work Required Im supporting a long-term programme looking for an experienced Scala Developer to join a high-performing engineering team on a 12-month Outside IR35 contract. * Strong commercial experience with Scala * Experience building high-quality, scalable backend services * Exposure to microservices, REST APIs, functional programming * Strong understanding of CI/CD and modern engineering practices * Cloud experience (AWS ideally) * Able to support occasional out-of-hours work when required?? * £450/day (Outside IR35) * 12 months * Remote * Immediate interviews & quick onboarding If youre available and interested, drop me a message or send over your CV.
        £450 per day Fully Remote (UK-based) Occasional Out-of-Hours Work Required Im supporting a long-term programme looking for an experienced Scala Developer to join a high-performing engineering team on a 12-month Outside IR35 contract. * Strong commercial experience with Scala * Experience building high-quality, scalable backend services * Exposure to microservices, REST APIs, functional programming * Strong understanding of CI/CD and modern engineering practices * Cloud experience (AWS ideally) * Able to support occasional out-of-hours work when required?? * £450/day (Outside IR35) * 12 months * Remote * Immediate interviews & quick onboarding If youre available and interested, drop me a message or send over your CV.
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        FEATURED
        Senior Microsoft Dynamics 365 Business Central Developer £70-75k + Benefits | Remote UK, Spain or Portugal - Do you enjoy owning the technical delivery of complex ERP solutions and working directly with clients to shape how systems support real business operations. You would play a key role in delivering end to end Microsoft Dynamics 365 Business Central software solutions across a varied client base, ranging from SMEs through to large multinational organisations. This is a position where technical depth matters, but so does the ability to engage with stakeholders, translate business requirements, and guide projects through design, build and implementation. You will take ownership of solution design and development, ensuring high quality delivery while setting strong technical standards across the team.
        Senior Microsoft Dynamics 365 Business Central Developer £70-75k + Benefits | Remote UK, Spain or Portugal - Do you enjoy owning the technical delivery of complex ERP solutions and working directly with clients to shape how systems support real business operations. You would play a key role in delivering end to end Microsoft Dynamics 365 Business Central software solutions across a varied client base, ranging from SMEs through to large multinational organisations. This is a position where technical depth matters, but so does the ability to engage with stakeholders, translate business requirements, and guide projects through design, build and implementation. You will take ownership of solution design and development, ensuring high quality delivery while setting strong technical standards across the team.
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        FEATURED

        Data Analyst (Remote)

        Marstep Resourcing Solutions
        UK
        Up to £28,500 per annum Plus Quarterly Profit Share + Benefits + Caree
        This is a great opportunity to join a long established and growing business where you will have the opportunity to develop a worthwhile career and be rewarded with good benefits and profit share. Salary From £25k to £28.5k - depending upon experience plus profit share of around 15% per annum and an opportunity to develop a long career. You may have some or all of the skills/requirements below, but training can be provided in areas and you will have the chance to learn skills you are not currently familiar with. Location:(Fully Remote) About Us - Data has the power to transform businesses, and we thrive on unlocking its full potential. We're looking for a data analyst who wants to take the next step up and join our growing team, offering a £25,000-£28,500 salary and the flexibility of a fully remote role.
        This is a great opportunity to join a long established and growing business where you will have the opportunity to develop a worthwhile career and be rewarded with good benefits and profit share. Salary From £25k to £28.5k - depending upon experience plus profit share of around 15% per annum and an opportunity to develop a long career. You may have some or all of the skills/requirements below, but training can be provided in areas and you will have the chance to learn skills you are not currently familiar with. Location:(Fully Remote) About Us - Data has the power to transform businesses, and we thrive on unlocking its full potential. We're looking for a data analyst who wants to take the next step up and join our growing team, offering a £25,000-£28,500 salary and the flexibility of a fully remote role.
        more
        FEATURED

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        Frequently Asked Questions

        How many permanent API jobs are there in Belfast?
        There are 17 permanent API jobs within 20 miles of Belfast available on CWJobs right now.

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