API Development Jobs in England

101 to 125 of 187 API Development Jobs in England

Mid to Backend Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Pontoon
Node.js, and TypeScript Lead the migration of existing systems from Node.js to Java to align with our strategic infrastructure goals Work with Docker and Kubernetes for containerization and streamlined development Build and manage CI/CD pipelines with GitHub Actions Monitor and maintain system performance, uptime, and deployments Write thorough unit and integration tests to ensure robust, reliable code … Collaborate with cross-functional teams to deliver innovative new features What We're Looking For: Extensive professional experience in backend development with Java and Node.js/TypeScript Solid knowledge of containerization tools (Docker, Kubernetes) Experience managing CI/CD pipelines with GitHub and GitHub Actions Strong understanding of SQL database management Computer Science or related degree Bonus Points For … Experience with Snowflake cloud data warehousing API development using GraphQL Soft Skills: Team player who thrives in a collaborative environment Strong problem-solving skills and ability to meet tight deadlines Effective communicator and adaptable to new tech Why Join Us? Work in London's financial hub with a leading institution committed to innovation and quality. Enjoy a hybrid More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Senior C# Developer - Finance

City of London, London, England, United Kingdom
Client Server Ltd
with he strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on C# .Net backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City office on a fulltime basis … Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management skills You are … As a Senior C# Developer/Software Engineer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior C# Developer/Software Engineer (C# .Net) opportunity. More ❯
Employment Type: Full-Time
Salary: £100,000 - £150,000 per annum
Posted:

PHP Laravel Developer - FinTech SaaS

London, United Kingdom
Hybrid / WFH Options
Oceanredpartners
PHP Full-Stack Developer (Mid-Level). Impact Technology Transformation, Modernisation, and Scalability. Size Medium-sized team, part of an exciting in-house engineering transformation. Skills PHP (Laravel), JQuery, API Development, MySQL, SOLID Principles, and modern DevOps tools. Location London, UK. Hybrid Flexible working policy with a collaborative office culture. Offer £50,000 - £60,000 Benefits Private medical … Are you looking for an opportunity to make a real impact within a fast-growing fintech company undergoing an exciting technology transformation? As part of a motivated and collaborative development team, you'll play a pivotal role in enhancing and modernising the company's tech stack. This involves building a robust backend API, integrating third-party platforms, and … robust, well-optimised APIs. Bonus points if you have worked with DevOps practices or modern tools like Docker or Kubernetes . Role Responsibilities: • Develop and maintain a robust backend API using PHP Laravel. • Enhance the platform with innovative new features that align with the product roadmap. • Seamlessly integrate third-party APIs into the system. • Collaborate with DevOps engineers to More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

.NET Software Architect

Lincoln, Lincolnshire, United Kingdom
Forterro
.NET Software Architect Department: Product Research & Development Employment Type: Permanent Location: UK, Lincoln Description We are seeking a highly skilled .NET Software Architect to work within the R&D Team to assist in design and development of our Cloud ERP solution. The ideal candidate will have extensive experience in .NET development, cloud technologies, and enterprise software architecture. … ensuring adherence to best practices, coding standards, and software design principles. Collaborate with product managers, product owners, and stakeholders to translate business requirements into architectural designs. Guide and mentor development teams, conducting code reviews and ensuring high-quality deliverables. Optimise application performance and scalability, addressing potential bottlenecks and security vulnerabilities. Oversee system integrations with third-party applications, APIs, and … and ASP.NET. Strong understanding of software architecture patterns. Expertise in relational databases (SQL Server, PostgreSQL). Hands-on experience with cloud computing platforms (Azure, AWS). Proficiency in RESTful API development, Web Services. Familiarity with containerization and cloud-native development. Knowledge of authentication frameworks. Experience with DevOps, CI/CD pipelines, and Infrastructure as Code tools. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Developer - .Net & Angular

Shropshire, United Kingdom
Hybrid / WFH Options
hireful
Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack capacity, developing your skills with Angular Typescript … the future of our platform building smart APIs, delivering seamless user experiences, and solving real-world customer challenges. This is your chance to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input. CLICK APPLY and send a CV through. More ❯
Employment Type: Permanent
Salary: GBP 50,000 - 55,000 Annual
Posted:

Full Stack Developer - .Net & Angular

Ludlow, Shropshire, West Midlands, United Kingdom
Hybrid / WFH Options
Hireful
Are you an experienced Full Stack .Net (C#) Developer, with solid experience in API development , keen to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input? Are you keen to work in a full stack capacity, developing your skills with Angular Typescript … the future of our platform — building smart APIs, delivering seamless user experiences, and solving real-world customer challenges. This is your chance to take ownership of end-to-end development, contribute to product innovation, and grow in a tech-led, agile team that genuinely values your input. CLICK APPLY and send a CV through. More ❯
Employment Type: Permanent, Work From Home
Salary: £50,000
Posted:

Software Developer

Bristol, Avon, South West, United Kingdom
Hybrid / WFH Options
ADLIB Recruitment
enable users to use social media or stream their favourite films and series on Netflix. What skills youll be needing C#.Net, Entity Framework, SQL/NoSQL databases,AWS. REST API development using C# and ASP.Net Core. Strong knowledge ofdata structures, algorithm design and complexity analysis. Experience developing, deploying and maintaining APIs onto AWS. Excellent understanding of software design … tests to system and integration tests. Willingness to develop across multiple platforms and architectures. Genuinely passionate about changing lives with assistive technology. What youll be doing Joining a growing development team, you will get involved in the full product lifecycle: understanding customer and business needs, idea generation, planning, designing and developing solutions and supporting features after theyve launched. The … insurance. Theres 25 days holiday plus BHs, flexible hours and hybrid working minimum 2 days a week to be spent in their Bristol office. They support continual learning and development to help you to reach your professional goals and as the development team continues to grow there will be opportunities to coach/mentor others if that appeals. More ❯
Employment Type: Permanent, Work From Home
Salary: £60,000
Posted:

Python Developer – AI & Automation

London, South East, England, United Kingdom
Precise Placements
solutions. Continuously improve automation performance, scalability, and reliability. Skills & Experience Strong experience with low-code/no-code automation platforms (e.g. n8n ). Proficient in Python and experienced with API development and integrations. Familiarity with AI and machine learning concepts, including integrating AI models into workflows. Experience using Microsoft Azure services, particularly for AI agent deployment and management. … mental, legal, and financial services. Cycle to Work scheme, season ticket loan, and paid volunteer day. Hybrid and flexible working arrangements. If you’re passionate about combining Python development with AI and automation to deliver real-world impact, we’d love to hear from you. Apply today and be part of a technology team that’s shaping the future More ❯
Employment Type: Full-Time
Salary: £70,000 - £75,000 per annum
Posted:

Lead Software Engineer

Manchester, Lancashire, United Kingdom
Lloyds Banking Group
to use! We use innovative data mesh architecture on Google Cloud Platform (GCP) to enable decentralized, self-service data products across teams. We're crafting a clear path for development by integrating with GCP APIs and bringing to bear its robust services. If you're passionate about shaping scalable solutions in complex systems and enabling data democratisation, we want … in languages such as Python, Java, or Go, with a focus on building scalable, production-grade solutions. Experience with cloud platforms (AWS, GCP or Azure) Hands-on knowledge of API development, automation, and Infrastructure as Code (IaC) tools (e.g., Terraform). Proven experience in containerisation and orchestration (e.g., Kubernetes). Familiarity with building secure systems, adhering to enterprise More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Software Engineer

Bristol, Gloucestershire, United Kingdom
Lloyds Banking Group
to use! We use innovative data mesh architecture on Google Cloud Platform (GCP) to enable decentralized, self-service data products across teams. We're crafting a clear path for development by integrating with GCP APIs and bringing to bear its robust services. If you're passionate about shaping scalable solutions in complex systems and enabling data democratisation, we want … in languages such as Python, Java, or Go, with a focus on building scalable, production-grade solutions. Experience with cloud platforms (AWS, GCP or Azure) Hands-on knowledge of API development, automation, and Infrastructure as Code (IaC) tools (e.g., Terraform). Proven experience in containerisation and orchestration (e.g., Kubernetes). Familiarity with building secure systems, adhering to enterprise More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Graduate/Junior Developer

Brighton, Sussex, United Kingdom
Hybrid / WFH Options
Better Days Recruitment Ltd
and beyond. The Tech division are looking for a talented and enthusiastic Junior Developer to learn from and work closely with the CTO. The role will be full stack development working mainly on web applications. Working in a process-led environment, you will support ongoing web and mobile development projects with a primary focus on Laravel stack and … React Native mobile applications. You will collaborate with the CTO to build and maintain structured, scalable systems following the existing architecture and processes. Conduct front end UI development, debugging and snagging and perform basic penetration testing. Occasionally join client calls to gather requirements, communicating effectively and professionally. This is a fantastic opportunity to start your development career, develop … Or experience of working with or knowledge of the PHP framework (object orientated programming) Amazon Web Services Any knowledge or experience of SES and SMS Knowledge/experience of API development Experience or knowledge or React is desirable PHP unit testing Strong problem solver with a high attention to detail Outstanding communication skills verbally and written Enjoys working More ❯
Employment Type: Permanent
Salary: GBP 25,000 - 35,000 Annual
Posted:

Graduate/Junior Developer

Brighton, Brighton and Hove, East Sussex, United Kingdom
Hybrid / WFH Options
Better Days Recruitment Ltd
and beyond. The Tech division are looking for a talented and enthusiastic Junior Developer to learn from and work closely with the CTO. The role will be full stack development working mainly on web applications. Working in a process-led environment, you will support ongoing web and mobile development projects with a primary focus on Laravel stack and … React Native mobile applications. You will collaborate with the CTO to build and maintain structured, scalable systems following the existing architecture and processes. Conduct front end UI development, debugging and snagging and perform basic penetration testing. Occasionally join client calls to gather requirements, communicating effectively and professionally. This is a fantastic opportunity to start your development career, develop … Or experience of working with or knowledge of the PHP framework (object orientated programming) Amazon Web Services Any knowledge or experience of SES and SMS Knowledge/experience of API development Experience or knowledge or React is desirable PHP unit testing Strong problem solver with a high attention to detail Outstanding communication skills verbally and written Enjoys working More ❯
Employment Type: Permanent
Salary: £25000 - £35000/annum Good Company benefits
Posted:

Senior Backend Engineer, Node.js + AWS

London, United Kingdom
Hybrid / WFH Options
Deel
Engineers, Product Teams, Designers, and QA professionals to create seamless experiences. Participate in Product Planning: From discovery to deployment, we value your input throughout all stages of the Software Development Lifecycle Develop and Enhance Features: Collaborate to develop robust new features, APIs, and continuously improve our industry-leading products. Help find and fix bugs at "Deel Speed." Provide an … Exceptional, Customer-Centric Experience: Ensure top-tier products and services through quality engineering and attentive, customer-focused development. What you'll bring to the Team: Expertise in Backend Development: Strong proficiency in Node.js, TypeScript/JavaScript best practices, along with experience in at least one other server-side language. Database Mastery: You're a SQL guru, particularly with PostgreSQL … scalability, ensuring they manage rapid growth and increasing demands efficiently. High-Volume Performance: Proven expertise in optimizing systems for large transaction volumes, handling concurrency, idempotency, and performance under load. API Development: Skilled in building APIs, including input validation, JWT tokens, and ensuring security & scalability through queue-based systems. Experience: at least 8 years of experience as a Software More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Developer

London, United Kingdom
Hybrid / WFH Options
Home Made
things, in and out of their comfort zone. Salary: Depending on experience Work Location: Southwark, London - we offer hybrid working for this role What you'll be responsible for: Development & Enhancement Build new features and functionality for web applications Develop and maintain RESTful APIs and backend services Create responsive, user-friendly frontend interfaces Collaborate with team members on system … tasks and deployment processes Support AWS infrastructure management and optimization Contribute to CI/CD pipeline improvements Help with server monitoring and maintenance Experience you'll already have: Frontend Development Frontend frameworks (React, Vue , or Angular) Excellent knowledge of Javascript and related FE technologies (React, Typescript, Webpack etc) HTML5, CSS3, and responsive design principles Understanding of modern build tools … and workflows Backend Development Solid experience with Node.js and server-side JavaScript Knowledge of RESTful API design and development Experience with databases (SQL and NoSQL) Understanding of authentication and security best practices General 2-3 years of experience as a Software Engineer Version control with Git Experience with testing frameworks and methodologies Understanding of agile development More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Application Specialist - London - £550/pd

London, South East, England, United Kingdom
Tenth Revolution Group
technical issues. Experience with system integrations (APIs, web services, batch processes). Knowledge of SaaS/cloud technologies and basic network configuration. Understanding of enterprise security principles and secure development practices. Experience in API development and management (RESTful, SOAP). Proven track record in supporting enterprise platforms and enhancing system capabilities. Excellent communication skills, both technical and … non-technical. Familiarity with ITIL Service Delivery framework. Technical Proficiency Cloud platforms and SaaS/PaaS solutions Application and PAS configuration API management and integration Mimecast, performance testing, patch and group policy management Understanding of security, data and reporting (desirable), Microsoft & Google products, SaaS licensing and commercials Culture and Conduct Be a role model for the organisation's purpose More ❯
Employment Type: Contractor
Rate: £550 per day
Posted:

Developer

London, United Kingdom
White Swan Data
inputs from social media and other unstructured online sources, which produce timely structured data for internal use in models and trading systems Implement and maintain relational database schemas and API integrations which interface the above with internal modeling and trading systems Enhance and refactor existing systems for scale and performance Monitor and optimize system performance to maintain and improve … RDBMS. Programming Proficiency : Strong skills in Java (Spring), experience in Python, and working knowledge of R Cloud & Infrastructure : Hands-on experience with Google Cloud Platform (GCP) and Docker containerization API Development : Experience building and integrating with RESTful APIs, particularly for real-time applications AI/LLM integration: Experience with design and delivery of analytics pipelines which include LLM More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Python Developer

England, United Kingdom
Hedgehog Lab
platforms (AWS, Azure, or GCP) •Improving and evolving legacy systems What You'll Need •3-5 years of Python experience •At least 1 year with Django •Strong backend/API development skills •Familiarity with relational databases and cloud platforms •Confidence working independently and collaboratively Bonus Points •Docker experience • React or frontend exposure • Cloud certifications • DevOps or AI interest … Northern England, we help global brands craft better digital experiences through technical excellence and human-first collaboration. Perks •️ 36 days paid holiday (incl. bank holidays) • Flexible working environment • Learning & development budget • Wellbeing budget + free therapy sessions • Bupa health plan (UK) • 1 volunteering day per year • Monthly socials & seasonal parties Interview Process 1)Intro Call - 30 mins (Google Meet More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer Engineering Team London, UK

London, United Kingdom
Applied Data Science Partners
We are looking for a Software Engineer to support the design, development, and implementation of machine learning models, build scalable applications, and optimise workflows.Not only will you directly contribute to our client deliverables, but you will have the opportunity to experiment with a range of cutting-edge techniques and deliver full-stack data science projects, from solution design through … findings and results to stakeholders through reports, presentations, and meetings REQUIRED SKILLS: Degree in a quantitative field such as engineering, mathematics, finance Previous experience of contributing to the design, development, testing, and deployment of software solutions Proven experience of working collaboratively as part of a software team, using tools like Git to adhere to established best practices Strong understanding … of software engineering concepts and principles, knowledge of best practices in software development and testing Proficiency in at least one programming language and be familiar with multiple programming paradigms (e.g. object-oriented, functional, procedural) Good understanding of cloud deployment Proficiency with Git Intermediate Python, including relevant libraries for data engineering and backend API development (i.e., FastAPI, Pydantic More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Junior Developer - PHP / React - Billingham / Stockton-on-Tees

Billingham, Cleveland, England, United Kingdom
Hybrid / WFH Options
Reed
be willing to work with both languages. Technologies PHP/Laravel JavaScript/Typescript (React/Express) SQL and MongoDB. Docker Git Linux/WSL Microservices Agile (Scrum) methodology, API development Salary is up to £27K for this role. Benefits include hybrid working (after probation period), flexible working, 20 days holiday +BH, pension, cycle to work scheme, free More ❯
Employment Type: Full-Time
Salary: £25,000 - £27,000 per annum, Inc benefits
Posted:

Machine Learning Engineer

London, United Kingdom
Hybrid / WFH Options
TUI Cruises GmbH
in everything we do. . ABOUT YOU Experience in designing, implementing, deploying and using various AI models and algorithms. Experience in deploying AI solutions (e.g. CI/CD pipeline, API development, containers). Strong programming skills in Python. Understanding of machine learning/AI frameworks and libraries. Hands-on experience with cloud technologies and services (e.g., AWS, Azure More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer C# .Net - Asset Manager

City of London, London, England, United Kingdom
Client Server Ltd
be collaborating with he strategy team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City office on a fulltime basis … Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management skills You are … you: As a Senior Software Engineer/Developer you will receive a competitive package: Salary to £150k Bonus paid every six months based on personal performance (10-25%) Professional development Pension Health Insurance Gym membership Social events, free fruit, snacks, coffee etc. Apply now to find out more about this Senior Software Engineer/Developer (C# .Net) opportunity. At More ❯
Employment Type: Full-Time
Salary: £100,000 - £150,000 per annum
Posted:

Lead / Senior Software Engineer (.NET & React Full-Stack)

Christchurch, Dorset, United Kingdom
Hybrid / WFH Options
ClearPoint Ltd
Depending on your level of experience, your role will range from hands-on coding to architectural design and technical leadership. Our projects involve modern software engineering practices, cloud-native development, and scalable microservices architectures. We are looking for engineers with expertise in.NET (C#), ReactJS (TypeScript), and AWS (preferred),and experience with DevOps practices, microservices architecture, containerisation, and CI/… The experience we're looking for Senior Engineers (5-7+ years experience): Expertise in designing and building scalable, cloud-native applications. Strong understanding of microservices architecture and RESTful API development. Experience with DevOps practices, including CI/CD, infrastructure as code, and cloud automation. Hands-on experience with container orchestration (Docker, Kubernetes). Ability to mentor and guide … provide a yearly BYOD allowance and phone allowance, so you can choose the tech that best suits your needs. All our permanent staff get an annual training and professional development budget for books, courses and conferences. You'll also get access to resources from a range of our partners such as AWS, Microsoft, Okta, Snowflake and Salesforce, including training More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

PHP Developer

Shoreham-by-sea, Sussex, United Kingdom
Hybrid / WFH Options
Focus Group
Developer is responsible for building new functionality and supporting existing functionality across Focus Group's portfolio of internal applications and services. This role involves working closely with the internal development team to develop set deliverables that are fit for purpose. Principal Responsibilities/Duties Develop change requests and fixes on Focus Bespoke CMS and CRM applications. Write unit tests … and collaborate with the QA Analyst to ensure new developments meet acceptance criteria. Participate in support desk activities on a rota basis for development-related issues. Contribute to projects as required by the business. Engage actively in standups, team meetings, and planning sessions. Essential Skills Strong ability in writing unit tests. Understanding of Javascript, JQuery, Vue.js. Experience using SQL … preferably MariaDB/MySQL). Proficiency in HTML5/CSS/Bootstrap and Laravel. Knowledge of API Development/PostMan. Experience with Git version control and branching. Ability to build meaningful relationships with colleagues. Proven experience in a similar role. Customer-focused with a desire to understand and meet customer requirements. Experience in the software development lifecycle. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Java Developer

Liverpool, Merseyside, England, United Kingdom
Hybrid / WFH Options
Hays Specialist Recruitment Limited
teams to support CI/CD pipelines Manage cookies and session handling effectively Write and maintain unit tests using JUnit Work with POJOs and mock data for testing and development Integrate front-end components using Thymeleaf and JSON What you'll need to succeed Essential Skills: Java (Core and Advanced) Government Digital Service standard Spring Boot & Spring Framework jQuery … Thymeleaf RESTful API development and testing (Postman, Swagger) CI/CD pipelines and DevOps collaboration Cookies/session management Unit testing with JUnit Handling POJOs and mock data Desirable: Exposure to modern frontend frameworks (e.g., React, Angular, Vue) What you'll get in return Location: Liverpool (2 on-site per week is a must)?? Contract Length: 6 months More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

R&D Tax Technical Writer

London, United Kingdom
Hybrid / WFH Options
EmpowerRD
into clear HMRC-aligned narratives that meet the DSIT guidelines. Your work will directly enable tech companies to claim R&D relief confidently and accurately. Key Responsibilities Technical Narrative Development: Produce high-quality, HMRC-compliant narratives. Client Technical Interviews: Be able to conduct in-depth interviews with software engineers, architects, developers, and tech leads to extract relevant technical information. … Editing & Documentation Review: Maintain high standards for clarity, grammar, technical depth, and consistency across all documentation. Continuous Professional Development: Remain up-to-date with HMRC's evolving R&D guidance, legislative updates, and emerging technologies in software, cloud, AI/ML, and cybersecurity. Requirements Degree in Computer Science, Software Engineering, IT, or similar or proven experience in technical writing … within software/IT domains. Strong understanding of software development lifecycles, code review, test automation, CI/CD, API development, microservices, cloud/native architectures, and emerging domains like AI/ML, cybersecurity, or data engineering. Experience in technical documentation or writing, especially for grant applications, R&D claims, or regulatory purposes. Excellent written communication skills with 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