101 to 125 of 171 API Design Jobs in the UK

Software Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
Nottingham, Nottinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £60,000 per annum
infrastructure. THE ROLE: Key responsibilities include: Owning and maintaining AWS infrastructure (Lambda, Step Functions, DynamoDB, S3). Building and enhancing internal Python libraries (API design, releases, versioning). Managing trackers, Lambdas, Step Functions, DynamoDB tables, and API integrations (including Slack-based pipelines). Operating across the full … engineering lifecycle, from design through to production deployment. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Python AWS services including Lambda, Step Functions, S3, DynamoDB, EC2/ECS. Infrastructure-as-code (Terraform or CloudFormation). CI/CD, testing, and software engineering best practices. THE BENEFITS ...

Software Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £60,000 per annum
infrastructure. THE ROLE: Key responsibilities include: Owning and maintaining AWS infrastructure (Lambda, Step Functions, DynamoDB, S3). Building and enhancing internal Python libraries (API design, releases, versioning). Managing trackers, Lambdas, Step Functions, DynamoDB tables, and API integrations (including Slack-based pipelines). Operating across the full … engineering lifecycle, from design through to production deployment. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Python AWS services including Lambda, Step Functions, S3, DynamoDB, EC2/ECS. Infrastructure-as-code (Terraform or CloudFormation). CI/CD, testing, and software engineering best practices. THE BENEFITS ...

Software Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
Leeds, West Yorkshire, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £60,000 per annum
infrastructure. THE ROLE: Key responsibilities include: Owning and maintaining AWS infrastructure (Lambda, Step Functions, DynamoDB, S3). Building and enhancing internal Python libraries (API design, releases, versioning). Managing trackers, Lambdas, Step Functions, DynamoDB tables, and API integrations (including Slack-based pipelines). Operating across the full … engineering lifecycle, from design through to production deployment. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Python AWS services including Lambda, Step Functions, S3, DynamoDB, EC2/ECS. Infrastructure-as-code (Terraform or CloudFormation). CI/CD, testing, and software engineering best practices. THE BENEFITS ...

Software Engineer

Hiring Organisation
Wave Group
Location
Maidenhead, England, United Kingdom
Improving engineering practices and contributing to shared standards Sharing knowledge through documentation, pairing and onboarding support Technology environment Frontend: React, TypeScript, shared component libraries, design systems and accessible UI principles Backend: Node.js with TypeScript, REST APIs, SQL and NoSQL databases Infrastructure: Modern CI/CD pipelines, automated testing … ownership of engineering projects end-to-end Experience working across multiple services or codebases in a product team Good understanding of databases, integrations and API design Experience building secure, performant and observable systems Clear communication skills and the ability to explain technical decisions A collaborative, supportive approach with ...

Senior Software Engineer

Hiring Organisation
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Location
Ipswich, England, United Kingdom
holds up under real world pressure. What you will be doing: Designing and building scalable backend systems in Python, with a strong focus on API design and data handling Owning features end to end, from discovery through to deployment and iteration Contributing to architectural decisions across a microservices … team What they are looking for: Strong Python experience, with a track record of building and maintaining production systems Solid understanding of system design, particularly around APIs and distributed architectures Experience working with AWS and modern deployment practices Engineers who care about code quality, CI/CD, and building ...

Senior Software Engineer

Hiring Organisation
SR2
Location
Ipswich, Suffolk, United Kingdom
Employment Type
Permanent
Salary
£65000 - £70000/annum + benefits
holds up under real world pressure. What you will be doing: * Designing and building scalable backend systems in Python, with a strong focus on API design and data handling * Owning features end to end, from discovery through to deployment and iteration * Contributing to architectural decisions across a microservices … team What they are looking for: * Proven Python experience, with a track record of building and maintaining production systems * Solid understanding of system design, particularly around APIs and distributed architectures * Experience working with AWS and modern deployment practices * Engineers who care about code quality, CI/CD, and building ...

Java Software Engineer

Hiring Organisation
Addition
Location
Cheltenham, England, United Kingdom
Industry: Security & Intelligence/Government Technology What You’ll Be Doing: Develop and maintain secure, high-performance Java backend services for mission-critical systems Design scalable microservices and APIs that power data-driven platforms and operational tools Build distributed applications capable of handling large data volumes with speed … support live environments Main Skills Needed: Strong Java development experience (Java 11+) using frameworks like Spring Boot Solid understanding of software architecture, OOP and API design Experience building microservices and distributed systems Proven ability to deliver scalable, high-performance backend applications Familiarity with DevSecOps tools (Docker, Kubernetes ...

Server-Side Java/AWS engineer

Hiring Organisation
Harvey Nash
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £80,000 per annum
APIs, Graph QL, Python (nice to have), CI/CD What we're looking for: Strong backend engineering experience (Java + AWS) Microservices and API design expertise Exposure to financial services or regulatory environments (preferred) High visibility role, strong engineering culture, and opportunity to work on large-scale ...

Contract Senior Software Engineer (Java or Python)

Hiring Organisation
SoCode Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 650 - 700 Daily
generated code for correctness, security, and financial accuracy Desirable, but no essential: Experience with Apache Airflow or similar workflow schedulers REST or GraphQL API design experience Knowledge of fixed income, FX, or derivatives products and associated P&L/risk methodologies ...

Contract Senior Software Engineer (Java or Python)

Hiring Organisation
SoCode Limited
Location
London, Baker Street, United Kingdom
Employment Type
Contract
Contract Rate
£650 - £700/day
generated code for correctness, security, and financial accuracy Desirable, but no essential: Experience with Apache Airflow or similar workflow schedulers REST or GraphQL API design experience Knowledge of fixed income, FX, or derivatives products and associated P&L/risk methodologies ...

Senior Software Engineer

Hiring Organisation
Osborne Appointments
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Permanent
Salary
£70000/annum + Benefits
similar highly desirable) Solid experience with MySQL, including optimisation and performance tuning Experience with modern JavaScript frameworks (React, Vue, Angular etc.) Strong understanding of API design (RESTful or GraphQL) Experience working with Linux environments Familiarity with Git, CI/CD pipelines, and agile methodologies A proactive, solutions-focused ...

Apex Developer

Hiring Organisation
Tata Consultancy Services
Location
England, United Kingdom
Should be able to write unit test cases using any of the frameworks and should be completely automated. Should have strong exposure in REST API design principles. Should be able to develop reusable components using proper design patterns and implement the right solutions. Should be able ...

Product Development Lead

Hiring Organisation
Brightwork Ltd
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Permanent
engineering standards, and ensuring solutions are scalable, secure and fit for purpose. What you'll do Lead the end-to-end development lifecycle from design through to delivery Define technical direction and architecture across Java and AWS services Architect and develop scalable backend services using latest Java (23+ … Spring Boot Drive best practice across TDD, CI/CD, and scalable API design Collaborate with Product, DevOps and QA teams to align technical delivery with business goals Guide technical change and continuous improvement initiatives Support and mentor engineers, fostering a high-performance culture What you'll bring ...

Senior Data Engineer

Hiring Organisation
Haystack
Location
City of London, London, United Kingdom
cloud platforms is beneficial but not essential) Strong collaboration and communication skills 4+ years of experience in data-focused software development, including data modelling, design patterns, and building scalable, secure systems Working knowledge of software engineering principles and best practices, including testing, packaging, API design, DevOps, DataOps ...

Python Developer

Hiring Organisation
Digisourced
Location
City of London, London, United Kingdom
Programming within an Agile framework. Key Requirements: Languages/Frameworks: Python (Django, FastAPI, Flask). AWS Ecosystem: Lambda, S3, RDS, DynamoDB, VPC, Step Functions. API Design: RESTful, GraphQL, AppSync. IaC: Terraform or AWS CDK. CI/CD: GitLab Cloud, GitHub Actions, or AWS CodePipeline. Experience: Typically 10+ years ...

Senior Full-Stack Engineer

Hiring Organisation
Addition
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£85,000 - £100,000 per annum
high standards for security, auditability, and compliance Main Skills Needed: Strong background in building and running production-grade systems Solid backend engineering expertise and API design experience Good understanding of relational databases and data modelling Experience working in regulated or audit-heavy environments Full stack capability across frontend ...

Mid-Senior Ruby on Rails Engineer (B2B SaaS | Hybrid | UK)

Hiring Organisation
Transreport
Location
City of London, London, United Kingdom
architecture Extensive experience with PostgreSQL, including performance tuning and complex queries. Experience with background job processing using Sidekiq and Redis. Solid understanding of RESTful API design, JSON serialization, and authentication (e.g., JWT, SSO). Hands-on experience with AWS services and containerised deployments (Docker). Experience troubleshooting ...

Principal Solutions Architect

Hiring Organisation
Jobleads-UK
Location
Manchester, England, United Kingdom
working hours, patterns and locations to suit you and our business. About the Opportunity As a Principal Solutions Architect, you will specialise in the design, development and governance of integrated digital project controls environments across major capital programmes. This is not a general IT solutions architecture role. … needed. Key Responsibilities Define enterprise aligned solution architectures for programme controls platforms covering cost, schedule, risk, performance reporting and data governance. Lead evaluation, selection, design and configuration of programme controls systems such as EcoSys, Oracle Primavera P6 and Unifier, Aconex, CDEs including SharePoint and ProjectWise, and related digital delivery ...

Principal Solutions Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
working hours, patterns and locations to suit you and our business. About the Opportunity As a Principal Solutions Architect, you will specialise in the design, development and governance of integrated digital project controls environments across major capital programmes. This is not a general IT solutions architecture role. … needed. Key Responsibilities Define enterprise aligned solution architectures for programme controls platforms covering cost, schedule, risk, performance reporting and data governance. Lead evaluation, selection, design and configuration of programme controls systems such as EcoSys, Oracle Primavera P6 and Unifier, Aconex, CDEs including SharePoint and ProjectWise, and related digital delivery ...

Full Stack Engineer

Hiring Organisation
Affinity Labs
Location
City of London, London, United Kingdom
full-stack product delivery, from infrastructure and AI integrations through to React/React Native interfaces, collaborating closely with founders, creators, product, and design to turn lean specs into scalable, user-loved software. We’re looking for a strong generalist with backend depth and real mobile experience. Responsibilities Implement … mobile + web frontend → APIs → data models → integrations) while maintaining quality and velocity. Build React Native mobile apps and shared component systems across products. Design and ship scalable backend services (APIs, integrations, AI workflows). Run tight build → test → iterate → ship loops; provide realistic estimates and surface blockers early. ...

Software Engineer

Hiring Organisation
Forward Role
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
Salary
£80,000
customer-facing software projects. Experience with one or more of the following: Full-stack web development Software as a Service (SaaS) Mobile application development API design and development Cloud platforms (AWS, Azure, GCP) Front-end development and user experience (UX) Clearance required - Due to the nature … client's work, you are required to hold an eDV level security clearance. As an industry leading, nationwide Marketing, Digital, Analytics, IT and Design recruitment agency, we are continually receiving new assignments to work on, so keep a close eye on our website, Facebook, LinkedIn and Twitter pages ...

Software Engineering Team Lead - eDV cleared

Hiring Organisation
Forward Role
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
customer-facing software projects. Experience with one or more of the following: Full-stack web development Software as a Service (SaaS) Mobile application development API design and development Cloud platforms (AWS, Azure, GCP) Front-end development and user experience (UX) Clearance required - Due to the nature … client's work, you are required to hold an eDV level security clearance. As an industry leading, nationwide Marketing, Digital, Analytics, IT and Design recruitment agency, we are continually receiving new assignments to work on, so keep a close eye on our website, Facebook, LinkedIn and Twitter pages ...

Python Engineer

Hiring Organisation
Harvey Nash
Location
Birmingham, West Midlands, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 per annum
working - 3 days per week onsite Salary up to £65,000 per annum A leading Birmingham-based client is seeking a Python Developer to design, build, and deploy applications using Python frameworks and LLM APIs. The position focuses on developing scalable, secure AI services in Azure's public cloud … involves hands-on work throughout the development lifecycle, including API design, data access, AI integration, and cloud deployment. Key skills and responsibilities: Design, develop, and maintain AI-driven applications and services utilising Python. Build and manage RESTful APIs with FastAPI. Integrate and oversee Large Language Models ...

Scala Developer

Hiring Organisation
SF Partners Admin
Location
United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
following key skills: - At least three years commercial scala programming - Strong framework experience (Akka, Play etc) - Relational database experience - PostgreSQL - MongoDB, NoSQL - RESTful API design and integration experience - Solid unit test understanding - Spec2, scalaTest etc - Experience working in a TDD/BDD driven environment - Containerization experience - Docker, Kubernetes … well-established friendly team then please apply now to be considered and for further details. Scala Developer Up to £80,000 Scala, REST Api, NoSQL, TDD/BDD, functional programming, CI/CD, Play, Akka ...

Java Developer - Azure

Hiring Organisation
Infoplus Technologies UK Limited
Location
City of London, London, United Kingdom
/Quarkus), and JVM internals. Deep experience with distributed systems, concurrency, and high-performance architectures. Hands-on experience with message queues (Kafka, RabbitMQ, Pulsar), API design, and event-driven systems. Solid understanding of SQL/NoSQL databases, caching, and data modelling. Strong knowledge of cloud platforms (Azure ...