API Development Jobs in England

26 to 50 of 189 API Development Jobs in England

Senior C# .NET Developer

Portsmouth, Hampshire, England, United Kingdom
Hybrid / WFH Options
MORRIS SINCLAIR RECRUITMENT LTD
Scrum ) and thrive in a fast-paced, dynamic setting. They should have a keen interest in emerging technologies , staying ahead of industry trends, and be committed to continuous skill development . A professional and approachable demeanor is key, as is the ability to champion the adoption of innovative technologies within the team. Experience Good knowledge of Microsoft development technologies Visual Studio 2022 onwards Strong C#/.NET experience Net/.Net Core Web API development experience API documentation generation tools Experience using IoC containers SQL Server experience Experience using Entity Framework OOAD skills and good understanding of Design Patterns and Practices Web services (SOAP and/or WCF) Unit testing/Test Driven Development Distributed WinForms systems development Desirable Familiarity with DevOps tools for managing work items and source control, with TFS experience being a plus. Alternatively, experience working in a source-controlled, continuous integration (CI) environment. Background in the finance or pensions sector, with an understanding of industry-specific requirements and practices. Proficient in SQL Server query optimisation, including performance tuning More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Senior Solutions Architect

Holborn, Greater London, England
Nexus Jobs Limited
They are now looking to recruit a Senior Solutions Architect to be based at the Company's Central London Offices. You will extensive and deep Expertise in following Application Development areas: " Expertise in application architecture using modern technologies such as cloud native development, 12 factor Apps, microservices, serverless, API management, Kafka, etc. " Deep knowledge of Microservices, Containers … REST APIs development, API Management tools (e.g. MuleSoft, Apigee), Kafka " Solution architect with broad expertise in wide range of digital technologies in areas of application platform development, web and mobile development, cloud, integration, security, etc. " Application dev experience with at least one of the cloud providers - Amazon AWS or MS Azure " Understanding of distributed computing paradigm … and exposure to building highly scalable systems. " Experience with platform modernization and cloud migration projects " Expertise in Agile development methodologies like TDD, BDD, Performance/Load testing etc. " DevOps experience - CI/CD, Test Automation, Containerization - tools and processes " Should be conversant with emerging technologies - chatbots, voice/conversational interfaces, RPA, Machine Learning, etc. " In-depth, hands-on experience More ❯
Employment Type: Permanent
Posted:

.Net C# Software Developer

Banbury, Oxfordshire, England, United Kingdom
Hybrid / WFH Options
hireful
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? If yes … you’d like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we’d like to speak with you! Job title: .Net (C#) API Developer Location: Banbury, Oxfordshire. Hybrid working: 2 office days per week, 3 from home, flexible. Salary: ~£50K Basic + Benefits package. We can be somewhat flexible though - so please … team. Our desired "list of stuff" that you should demonstrate experience, below. 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! - C# and .NET Core. - ASP.NET Core MVC and Web API. - Extensive use of Entity Framework Core and LINQ for data access More ❯
Employment Type: Full-Time
Salary: £45,000 - £55,000 per annum
Posted:

Net C# Software Developer

Banbury / work from home, Oxfordshire, United Kingdom
Hybrid / WFH Options
hireful
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? If yes … you’d like to join a growing, recently invested in, actually bringing offshore, back onshore, UK Software company – we’d like to speak with you! Job title: .Net (C#) API Developer Location: Banbury, Oxfordshire. Hybrid working: 2 office days per week, 3 from home, flexible. Salary: ~£50K Basic + Benefits package. We can be somewhat flexible though - so please … team. Our desired "list of stuff" that you should demonstrate experience, below. 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! - C# and .NET Core. - ASP.NET Core MVC and Web API. - Extensive use of Entity Framework Core and LINQ for data access More ❯
Employment Type: Permanent
Salary: £45000 - £55000/annum ~£50K Basic + Benefits package
Posted:

Staff Android Engineer

London, United Kingdom
Hybrid / WFH Options
WeAreTechWomen
more regularly. Expected Salary: £59,500 - £92,400 (depending upon experience) Contract type: Permanent What will you be doing? You will work as a software engineer specialising in Android development within a cross-functional Agile development team. You'll be working collaboratively with other highly skilled Android Engineers as well as iOS engineers, BAs, Quality Engineers, Designers and … User Experience specialists on challenging customer-facing projects. As a Staff Engineer you will have responsibility for the development approach and provide technical assurance on complex IT projects. You will also use your knowledge of software engineering to support shaping of new projects and support the professional development of less experienced software engineers. You will work with a … will receive the support and resources needed to achieve your learning goals. Internally this role is known as Product Engineer (L6). Essential skills: Extensive experience in Native Mobile Development in Android (Kotlin and Java) Accessibility best practice Continuous Integration/Continuous Delivery Demonstrable experience in TDD, pair programming Agile development methods such as Scrum or Kanban REST More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Backend Developer

England, United Kingdom
Hybrid / WFH Options
Sage City
Newcastle Office Why You'll Love Working With Us: - Innovative Technologies: Dive into the world of .NET C# framework and tackle difficult assignments with your broad knowledge of software development principles, practices, and procedures. - High-Quality Development: Successfully develop, deliver, and maintain high-quality software, including requirements, design, code, and documentation. - Collaborative Environment: Work closely with product managers … with various Sage teams, including product management, QA/XD, and different product lines or business units, to drive results. - Mentorship Opportunities: Mentor and coach junior members of the development team, sharing your expertise and guiding their growth. - Agile Methodologies: Leverage your extensive experience with Agile Development, SCRUM, and Extreme Programming methodologies to deliver exceptional results. Key Responsibilities … Knowledge of best practices for securing web applications, including authentication, authorization, and data protection. - Version Control (Git): Experience with Git for version control, including branching, merging, and pull requests. - API Development: Proficiency in designing and developing RESTful APIs. Desirable Skills: - Behavior Driven Design (BDD): Familiarity with BDD principles and tools like SpecFlow or Cucumber for writing and automating More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Staff and Team Lead, Onyx Application Engineering

London, United Kingdom
Hybrid / WFH Options
GlaxoSmithKline
of state-of-the-art data driven applications. This role requires a blend of leadership and hands-on technical expertise. The ideal candidate will be responsible for overseeing the development, deployment, and maintenance of high-performance applications tailored to meet the unique needs of our scientific user base. This includes collaborating with cross-functional teams to understand user requirements … application architectures, and ensuring the integration of cutting-edge data analytics and tools. The role demands a proactive approach to staying abreast of the latest technological advancements in application development and software engineering practices, ensuring that our applications not only meet current demands but are also forward compatible with emerging scientific and technological trends. The Staff Application Engineer and … Team Lead will also be responsible for building and leading a high-performing team of skilled engineers. This includes resource allocation, employee development, and ensuring adherence to best practices in software development lifecycle management. The role also encompasses the maintenance and support of existing applications, guaranteeing security, high availability, reliability, and optimal performance. The ideal candidate should demonstrate More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Android Developers - Remote - up to £95K + Package

Central London, London, United Kingdom
Hybrid / WFH Options
Halian Technology Limited
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Employment Type: Permanent
Salary: £95,000
Posted:

Senior Android Developers - Remote - up to £95K + Package

City of London, London, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

London Area, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

East London, London, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

Bolton, Greater Manchester, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

Bury, Greater Manchester, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

Altrincham, Greater Manchester, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

Leeds, West Yorkshire, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

Leigh, Greater Manchester, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

Central London / West End, London, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Senior Android Developers - Remote - up to £95K + Package

Ashton-Under-Lyne, Greater Manchester, United Kingdom
Hybrid / WFH Options
Halian | Managed Services, Recruitment Agency & Contract Staffing
basis. This is a great opportunity to create exceptional customer experiences and work on cutting-edge technology! As a Senior Engineer, you will be responsible for leading the design, development, and maintenance of high-performance native applications. Whilst overseeing multiple teams, you will play a pivotal role in shaping the development strategy, and collaborating with cross-functional teams … delivery of high-quality solutions. Location: Mainly Remote – Occasional office visits in London. Salary: up to £95,000 + competitive benefits, depending on experience. Requirements: Experience in Native Mobile Development in Android (Kotlin and Java) Postman CI/CD Rest API Development Agile development methods such as Scrum or Kanban Must have leadership experience. These roles More ❯
Posted:

Full Stack Developer - Customer Experience Engineer

London, United Kingdom
Hybrid / WFH Options
Judge.me
our Head of Customer Support to build next-generation systems that enable our team to deliver world-class support efficiently and effectively. What Makes This Role Special High-Impact Development : Every system you build directly affects customer satisfaction and business growth. Your technical solutions will be measured by real business outcomes. Cutting-Edge AI Integration : Work at the forefront … engineering challenge of doing more with less. Full Ownership : Take end-to-end ownership of internal platforms, from conception through deployment and ongoing optimization. Core Responsibilities Technical Integration & Platform Development Design and implement robust API integrations between Intercom, internal systems, and third-party platforms Build and maintain our internal web-based admin tools and dashboards Develop scalable, maintainable … streamline complex workflows Research, prototype, and implement emerging technologies that enhance customer experience Develop intelligent routing and escalation systems Create A/B testing frameworks for automation initiatives Backend Development & Analytics Build backend systems that capture and process customer interaction data Develop dashboards and reporting tools that measure system performance and effectiveness Create analytics features that help identify patterns More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Azure Fullstack Engineer

London, United Kingdom
IBM Computing
wide network of clients, whom may be at their site or one of our CIC or IBM locations. Our culture of evolution centres on long-term career growth and development opportunities in an environment that embraces your unique skills and experience. We offer: A multitude of training opportunities from classroom to e-learning, mentoring and coaching programs as well … We're seeking a seasoned Senior Application Developer to spearhead our Azure cloud initiatives. As a thought leader, you'll guide strategic decisions, architect complex solutions, and mentor our development team. Responsibilities Define the technical strategy and architecture for Azure-based applications, aligning with business goals and technological advancements. Mentor and guide junior developers, fostering a culture of continuous … growth and improvement. Conduct thorough code reviews, uphold coding standards, and promote high-quality software development practices across the team. Serve as a key liaison between stakeholders and the development team, translating requirements into technical solutions and leading high-profile projects. Contribute to the overall technical vision and direction of our cloud development efforts. Required technical and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer

Bury, Lancashire, United Kingdom
Hybrid / WFH Options
Car Benefit Solutions
you a passionate Software Engineer looking to make a real impact? At Car Benefit Solutions, we're on the lookout for a talented developer to join our dynamic Web Development team. As a Software Engineer, you will play a key role in shaping the future of our technology solutions. In this role, you will design, develop, and maintain various … software applications, ensuring that our systems run smoothly and meet the needs of our clients and internal teams. You will be involved in the back-end development, working with our Agile teams to deliver high-quality software solutions. You will collaborate closely with our wider Software Services Team to translate user requirements into technical specifications and will proactively contribute … to the continuous improvement of our software development processes. If you are passionate about software development and are looking for an opportunity to make a real impact, we would love to hear from you! The salary banding for this role is £40,000- £45,000 per annum. The working hours are 35 hours per week, from Monday to More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Back-End API Developer

England, United Kingdom
Vector Resourcing Ltd
We are searching for a Back-End API Developer who will be crucial in developing secure, scalable APIs to power complex business applications. You'll work across server-side logic, integrations, and performance optimisation to support front-end and mobile platforms. Responsibilities - Build and maintain RESTful APIs - Develop secure, reusable server-side logic and services - Integrate third-party APIs … SQL/NoSQL) - Write automated tests for reliability and quality - Monitor and improve performance and scalability - Proficient in Node.js, Python, Java, Ruby, Go, or .NET - Strong experience with RESTful API development - Knowledge of API gateways, webhooks, and event-driven design - Experience with API documentation (Swagger/OpenAPI preferred) Be first to hear about new opportunities with More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior AI Engineer

Haywards Heath, Sussex, United Kingdom
Hybrid / WFH Options
First Central Services
seasoned AI expert ready to take your skills to the next level? Do words like Azure OpenAI, Cognitive Services, prompt engineering, Retrieval-Augmented Generation (RAG) architectures, vector stores, and API integrations make you light up inside? If so, we want to hear from you! At 1st Central , we're on an exciting journey with AI and Generative AI - and … s about bringing smart ideas to life and making a real impact. You'll be at the heart of our AI strategy - from initial concept and prompt design, through development and testing, to deployment, production, monitoring and continuous improvement optimising cutting-edge AI solutions across the business. One day you might be collaborating with our Data Scientists, Software Engineers … or save time-and you know how to turn those ideas into working solutions. What's involved: Lead the design and implementation of AI engineering frameworks and standards, emphasising API integrations, Azure infrastructure, and Azure security & networking. Architect and develop AI and Generative AI solutions using services like Azure OpenAI and Azure Cognitive Services Implement prompt engineering techniques and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior AI Engineer

Manchester, Lancashire, United Kingdom
Hybrid / WFH Options
First Central Services
seasoned AI expert ready to take your skills to the next level? Do words like Azure OpenAI, Cognitive Services, prompt engineering, Retrieval-Augmented Generation (RAG) architectures, vector stores, and API integrations make you light up inside? If so, we want to hear from you! At 1st Central , we're on an exciting journey with AI and Generative AI - and … s about bringing smart ideas to life and making a real impact. You'll be at the heart of our AI strategy - from initial concept and prompt design, through development and testing, to deployment, production, monitoring and continuous improvement optimising cutting-edge AI solutions across the business. One day you might be collaborating with our Data Scientists, Software Engineers … or save time-and you know how to turn those ideas into working solutions. What's involved: Lead the design and implementation of AI engineering frameworks and standards, emphasising API integrations, Azure infrastructure, and Azure security & networking. Architect and develop AI and Generative AI solutions using services like Azure OpenAI and Azure Cognitive Services Implement prompt engineering techniques and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Axway API Developer

Preston, Lancashire, United Kingdom
CBSbutler Ltd
Axway API Developer + 6 month initial contract + Full remote + £650 to £690 per day + SC Cleared role Key Skills: + Axway API Development/Administration + SC Clearance Responsibilities Designing, developing and deploying of Axway policies and containers using Axway Policy Studio v7.7 Working with DevOps toolset for develop and maintain Automated Testing … and Code Deployment Provide Assistance to Axway support team to resolve technical issues Administrating the Axway Environment, using Axway Policy Studio, Axway API Manager, Cassandra and API Gateway for Deployment of Axway Patches, monitor capacity, providing service improvements Liaise with customers to define project requirements, document and design solutions Knowledge of: SFTP HTTPS SSL/TLS oAuth JSON More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
API Development
England
10th Percentile
£44,500
25th Percentile
£52,500
Median
£70,000
75th Percentile
£87,500
90th Percentile
£100,000