51 to 59 of 59 API Design Jobs in England

Senior Software Developer

Hiring Organisation
Brightbox GRP Ltd
Location
Newcastle Upon Tyne, Tyne and Wear, North East, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £560 per day
Qualifications Extensive experience developing scalable, high-performance backend systems using Node.js and/or Java (v21+). Strong knowledge of microservices architecture and RESTful API design. Demonstrated ability to lead technical initiatives, mentor engineering team members, and promote best practices across projects. Preferred Skills and Experience Hands-on experience … Proficiency in containerization technologies (Docker, Podman) and Kubernetes-based orchestration. Experience implementing secure coding practices and integrating IAM solutions such as Keycloak. Familiarity with API gateway platforms including WSO2, Kong, or Apigee. Advanced understanding of security standards such as TLS, OAuth2, encryption techniques, and threat mitigation strategies. Practical experience ...

Senior Full Stack Engineer

Hiring Organisation
Vallum Associates Limited
Location
Sheffield, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£500 per day
robust test scripts are included Focus on delivering highly available, highly resilient software and service capability Participate in a wider delivery team providing design and development of the new capabilities Support transformation of the current payment estate, with laser focus on modernization and adoption of cloud-based technology … designing, programming, documentation and implementation of the systems Perform reviews of new and existing systems to ensure operational integrity and accomplishment of stated objectives Design, code, test, debug and document programs as required Provide architecture guidance to developers based on best practices and in alignment with global standards Ensuring ...

Lead Technical Business Analyst

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
mitigate risks associated with migration and system cutover. Core Skills & Experience: Proven expertise in PAS systems and complex data migration projects. Strong knowledge of API design and integration . Advanced data modelling skills for structured and semi-structured data. Proficiency in XML, JSON, and Excel for data handling ...

Backend API & Integrations Developer

Hiring Organisation
Buchan and London Recruitment Ltd
Location
Basildon, Essex, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £85,000 per annum
Backend API & Integrations Developer Typical UK Salary: £55,000 – £85,000 per year Key Responsibilities: • Build and maintain backend APIs supporting all portal modules. • Integrate with telecom APIs, SIP platforms, and webhook systems. • Implement database schemas and optimise queries. • Develop the tender module, supplier marketplace backend, and contract summarisation … logic. • Maintain API gateway routing and service-to-service communication. • Work with DevOps on deployment and reliability. Required Skills: • Strong Node.js or Python backend development. • Experience with RESTful API design. • Database experience (PostgreSQL, MySQL, or MongoDB). • Experience integrating 3rd-party APIs. • Understanding of async workflows and queues. ...

Staff Software Engineer - Backend

Hiring Organisation
Fruition Group
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£85,000
large-scale software platform. Working across multiple teams to ensure alignment and scalability throughout the business. Set technical direction and contribute to key design decisions across teams. Lead by example, writing high-quality, maintainable code in Node.js and TypeScript. Design and optimise CI/CD pipelines, improving automation … robust services. Mentor and coach engineers, helping to raise the overall bar for backend development. Drive best practices in platform engineering, cloud infrastructure, and API design. Key requirements: 7+ years' experience in backend or platform engineering roles, with recent experience at senior/staff level. Deep hands-on expertise ...

Fullstack API Engineer

Hiring Organisation
Vallum Associates Limited
Location
Sheffield, South Yorkshire, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
Up to £500 per day Inside IR35
regarding area of responsibility Qualifications Bachelor's Degree required in Computer Science, Engineering or related majors Minimum of 8 years' applied experience as an API engineer Strong experience in API designing and creating architectural artefacts such as gap analysis, low level designs, data models etc. More than … programming in Java and ideally Go and Rust Expertise in JVM tuning and diagnostic for application troubleshooting and performance-optimization Expertise in distributed system design including microservices, Springboot Experience working with Kafka, Docker, k8s, service mesh Experience with monitoring and observability technologies: Splunk, Grafana, Prometheus, Jaeger, Kiali, Open Telemetry ...

Quant Developer

Hiring Organisation
Teksystems
Location
South East, United Kingdom
Employment Type
Contract
edge financial products and deliver robust, production-quality code that powers critical trading and risk systems. Youll collaborate closely with quants and traders to design and implement solutions that make a real impact. What Youll Do Develop high-performance applications in C# or C++, with code deployed in production … environments. Design and implement system architecture and APIs for complex financial workflows. Apply strong quantitative and mathematical skills to model and solve challenging problems. Work with a broad range of financial products, including rates, FX, inflation, and credit. What Were Looking For Proven experience in high-level programming (C# ...

Mulesoft Architect

Location
Telford, Shropshire, United Kingdom
MuleSoft Architect Key responsibilities: Development of API management and microservices Working as the Integration Technology Architect on the adoption of Hybrid Integration or an iPaaS solutions with a particular focus on the Mulesoft Anypoint platform that includes API Designer, AP manager, and API studio Defining and delivering ...

Mulesoft Architect

Hiring Organisation
Infoplus Technologies UK Ltd
Location
Telford, Shropshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 - 450 Daily
MuleSoft Architect Key responsibilities: Development of API management and microservices Working as the Integration Technology Architect on the adoption of Hybrid Integration or an iPaaS solutions with a particular focus on the Mulesoft Anypoint platform that includes API Designer, AP manager, and API studio Defining and delivering ...