API Design Jobs in England

201 to 225 of 342 API Design Jobs in England

Senior Python Engineer | AI Start Up

London Area, United Kingdom
Oho Group Ltd
You’ll play a key role in building scalable backend services, data pipelines, and infrastructure that power cutting-edge AI products used by customers worldwide. ✉️ What You’ll Do Design, build, and maintain high-performance backend systems in Python Develop APIs, data pipelines, and integrations that support AI-driven features Work closely with ML and product teams to deploy … Pulumi AI/ML Ecosystem: PyTorch, Hugging Face, LangChain (or similar) 👀 About You 4+ years of professional experience building production-grade systems in Python Solid understanding of backend architecture, API design, and data modeling Comfortable working with cloud infrastructure and distributed systems Strong problem-solving skills and a bias for shipping clean, maintainable code Experience collaborating in a More ❯
Posted:

Senior Python Engineer | AI Start Up

City of London, London, United Kingdom
Oho Group Ltd
You’ll play a key role in building scalable backend services, data pipelines, and infrastructure that power cutting-edge AI products used by customers worldwide. ✉️ What You’ll Do Design, build, and maintain high-performance backend systems in Python Develop APIs, data pipelines, and integrations that support AI-driven features Work closely with ML and product teams to deploy … Pulumi AI/ML Ecosystem: PyTorch, Hugging Face, LangChain (or similar) 👀 About You 4+ years of professional experience building production-grade systems in Python Solid understanding of backend architecture, API design, and data modeling Comfortable working with cloud infrastructure and distributed systems Strong problem-solving skills and a bias for shipping clean, maintainable code Experience collaborating in a More ❯
Posted:

Software Lead

Leeds, West Yorkshire, England, United Kingdom
SR2
Proven ability to lead technically by example while remaining hands-on in delivery Strong background in cloud (AWS) and infrastructure as code (Terraform) Solid understanding of SQL and database design Experience with modern frontend stacks and API design Enthusiasm for mentoring, collaboration and delivering software with impact If you’re looking for a role that blends technical More ❯
Employment Type: Full-Time
Salary: £70,000 - £90,000 per annum
Posted:

Senior AI Software Engineer

City of London, London, United Kingdom
Tempest Vane Partners
opportunities. This is a chance to join a globally respected firm where AI isn’t an experiment, it’s a business driver. What You’ll Get The opportunity to design and deploy world-class AI systems used across global investment teams. A high-impact seat within a team driving technological and analytical innovation across the firm. A collaborative environment … ML libraries and frameworks. Solid background in data architecture, with proven experience across SQL, NoSQL, and graph databases such as Neo4j or Amazon Neptune. Strong understanding of distributed systems, API design, and modern deployment practices using Docker, Kubernetes, and CI/CD pipelines. Comfort working in cloud-based environments (AWS preferred), including data connectivity and infrastructure-as-code More ❯
Posted:

Senior AI Software Engineer

London Area, United Kingdom
Tempest Vane Partners
opportunities. This is a chance to join a globally respected firm where AI isn’t an experiment, it’s a business driver. What You’ll Get The opportunity to design and deploy world-class AI systems used across global investment teams. A high-impact seat within a team driving technological and analytical innovation across the firm. A collaborative environment … ML libraries and frameworks. Solid background in data architecture, with proven experience across SQL, NoSQL, and graph databases such as Neo4j or Amazon Neptune. Strong understanding of distributed systems, API design, and modern deployment practices using Docker, Kubernetes, and CI/CD pipelines. Comfort working in cloud-based environments (AWS preferred), including data connectivity and infrastructure-as-code More ❯
Posted:

Senior AI Software Engineer

slough, south east england, united kingdom
Tempest Vane Partners
opportunities. This is a chance to join a globally respected firm where AI isn’t an experiment, it’s a business driver. What You’ll Get The opportunity to design and deploy world-class AI systems used across global investment teams. A high-impact seat within a team driving technological and analytical innovation across the firm. A collaborative environment … ML libraries and frameworks. Solid background in data architecture, with proven experience across SQL, NoSQL, and graph databases such as Neo4j or Amazon Neptune. Strong understanding of distributed systems, API design, and modern deployment practices using Docker, Kubernetes, and CI/CD pipelines. Comfort working in cloud-based environments (AWS preferred), including data connectivity and infrastructure-as-code More ❯
Posted:

Senior AI Software Engineer

london, south east england, united kingdom
Tempest Vane Partners
opportunities. This is a chance to join a globally respected firm where AI isn’t an experiment, it’s a business driver. What You’ll Get The opportunity to design and deploy world-class AI systems used across global investment teams. A high-impact seat within a team driving technological and analytical innovation across the firm. A collaborative environment … ML libraries and frameworks. Solid background in data architecture, with proven experience across SQL, NoSQL, and graph databases such as Neo4j or Amazon Neptune. Strong understanding of distributed systems, API design, and modern deployment practices using Docker, Kubernetes, and CI/CD pipelines. Comfort working in cloud-based environments (AWS preferred), including data connectivity and infrastructure-as-code More ❯
Posted:

Senior AI Software Engineer

london (city of london), south east england, united kingdom
Tempest Vane Partners
opportunities. This is a chance to join a globally respected firm where AI isn’t an experiment, it’s a business driver. What You’ll Get The opportunity to design and deploy world-class AI systems used across global investment teams. A high-impact seat within a team driving technological and analytical innovation across the firm. A collaborative environment … ML libraries and frameworks. Solid background in data architecture, with proven experience across SQL, NoSQL, and graph databases such as Neo4j or Amazon Neptune. Strong understanding of distributed systems, API design, and modern deployment practices using Docker, Kubernetes, and CI/CD pipelines. Comfort working in cloud-based environments (AWS preferred), including data connectivity and infrastructure-as-code More ❯
Posted:

Senior Full Stack Engineer

London Area, United Kingdom
Futureheads Recruitment | B Corp™
where your work will have direct global impact. In this role, you will own the full data stack from ingestion through to analytics, building and maintaining scalable pipelines across API, streaming, and batch processes. You will manage cloud infrastructure on AWS with a DevOps mindset, including CI/CD, infrastructure as code, monitoring, and scaling. Working closely with engineering … and team development. Build, ship, and refine high‐quality features that directly support conservation and sustainability. What They’re Looking For: 5+ years of backend experience with Go, including API design, microservices, and database systems like PostgreSQL. Solid frontend skills with React/Next.js, TypeScript. Experience building scalable, reliable SaaS products that are cleanly architected and maintainable. Strong … knowledge of AWS, CI/CD pipelines, containerisation, and DevOps best practices. A thoughtful approach to system design, balancing performance, scalability, and simplicity. Someone who thrives in fast‐moving, early‐stage environments and enjoys solving deep technical challenges. A great collaborator who values teamwork, communication, and shared mission. What's on offer: £80-95k + meaningful Equity More ❯
Posted:

Senior Full Stack Engineer

City of London, London, United Kingdom
Futureheads Recruitment | B Corp™
where your work will have direct global impact. In this role, you will own the full data stack from ingestion through to analytics, building and maintaining scalable pipelines across API, streaming, and batch processes. You will manage cloud infrastructure on AWS with a DevOps mindset, including CI/CD, infrastructure as code, monitoring, and scaling. Working closely with engineering … and team development. Build, ship, and refine high‐quality features that directly support conservation and sustainability. What They’re Looking For: 5+ years of backend experience with Go, including API design, microservices, and database systems like PostgreSQL. Solid frontend skills with React/Next.js, TypeScript. Experience building scalable, reliable SaaS products that are cleanly architected and maintainable. Strong … knowledge of AWS, CI/CD pipelines, containerisation, and DevOps best practices. A thoughtful approach to system design, balancing performance, scalability, and simplicity. Someone who thrives in fast‐moving, early‐stage environments and enjoys solving deep technical challenges. A great collaborator who values teamwork, communication, and shared mission. What's on offer: £80-95k + meaningful Equity More ❯
Posted:

Senior Full Stack Engineer

london, south east england, united kingdom
Futureheads Recruitment | B Corp™
where your work will have direct global impact. In this role, you will own the full data stack from ingestion through to analytics, building and maintaining scalable pipelines across API, streaming, and batch processes. You will manage cloud infrastructure on AWS with a DevOps mindset, including CI/CD, infrastructure as code, monitoring, and scaling. Working closely with engineering … and team development. Build, ship, and refine high‐quality features that directly support conservation and sustainability. What They’re Looking For: 5+ years of backend experience with Go, including API design, microservices, and database systems like PostgreSQL. Solid frontend skills with React/Next.js, TypeScript. Experience building scalable, reliable SaaS products that are cleanly architected and maintainable. Strong … knowledge of AWS, CI/CD pipelines, containerisation, and DevOps best practices. A thoughtful approach to system design, balancing performance, scalability, and simplicity. Someone who thrives in fast‐moving, early‐stage environments and enjoys solving deep technical challenges. A great collaborator who values teamwork, communication, and shared mission. What's on offer: £80-95k + meaningful Equity More ❯
Posted:

Senior Full Stack Engineer

slough, south east england, united kingdom
Futureheads Recruitment | B Corp™
where your work will have direct global impact. In this role, you will own the full data stack from ingestion through to analytics, building and maintaining scalable pipelines across API, streaming, and batch processes. You will manage cloud infrastructure on AWS with a DevOps mindset, including CI/CD, infrastructure as code, monitoring, and scaling. Working closely with engineering … and team development. Build, ship, and refine high‐quality features that directly support conservation and sustainability. What They’re Looking For: 5+ years of backend experience with Go, including API design, microservices, and database systems like PostgreSQL. Solid frontend skills with React/Next.js, TypeScript. Experience building scalable, reliable SaaS products that are cleanly architected and maintainable. Strong … knowledge of AWS, CI/CD pipelines, containerisation, and DevOps best practices. A thoughtful approach to system design, balancing performance, scalability, and simplicity. Someone who thrives in fast‐moving, early‐stage environments and enjoys solving deep technical challenges. A great collaborator who values teamwork, communication, and shared mission. What's on offer: £80-95k + meaningful Equity More ❯
Posted:

Senior Full Stack Engineer

london (city of london), south east england, united kingdom
Futureheads Recruitment | B Corp™
where your work will have direct global impact. In this role, you will own the full data stack from ingestion through to analytics, building and maintaining scalable pipelines across API, streaming, and batch processes. You will manage cloud infrastructure on AWS with a DevOps mindset, including CI/CD, infrastructure as code, monitoring, and scaling. Working closely with engineering … and team development. Build, ship, and refine high‐quality features that directly support conservation and sustainability. What They’re Looking For: 5+ years of backend experience with Go, including API design, microservices, and database systems like PostgreSQL. Solid frontend skills with React/Next.js, TypeScript. Experience building scalable, reliable SaaS products that are cleanly architected and maintainable. Strong … knowledge of AWS, CI/CD pipelines, containerisation, and DevOps best practices. A thoughtful approach to system design, balancing performance, scalability, and simplicity. Someone who thrives in fast‐moving, early‐stage environments and enjoys solving deep technical challenges. A great collaborator who values teamwork, communication, and shared mission. What's on offer: £80-95k + meaningful Equity More ❯
Posted:

Senior Software Engineer I

London, United Kingdom
Menlo Security, Inc
of being written, making it a critical part of the Menlo Security platform to keep end users safe. Responsibilities Evaluate and implement the latest development and deployment technologies for API design, highly available and scalable distributed systems, multithreaded/asynchronous applications with performance and security in mind Technically lead large scale projects, and participate in building, deploying and … operating the Menlo Security platform Architect, design, develop and own new features and services and be a key contributor to Menlo's technical roadmap Partner with product, security, operations, and other cross-functional stakeholders to align on requirements and schedules Requirements 3-5 years of experience in cloud computing technologies or related technical fields 3-5 years of hands More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Back End Developer

Greater Manchester, England, United Kingdom
Provide
In this role, you will develop and maintain server-side logic and APIs for web and mobile applications, collaborate with frontend teams to ensure seamless integration, and support database design, development, and optimization. You’ll also play an active role in improving system performance, fixing bugs, and contributing to new features. The ideal candidate will have hands-on experience … in backend development with a focus on Java and Spring Framework (or similar). Strong knowledge of RESTful API design and both SQL and NoSQL databases is essential. This role is well-suited to a backend developer who wants to grow within a collaborative engineering team that values clean, scalable code and strong development practices. Essential Skills Java More ❯
Posted:

Contract - Back End Developer - Python/AWS - £500-£700/day (Outside IR35) - ID44270

Oxfordshire, England, United Kingdom
Humand Talent
or Flask) to architect and deliver production-grade systems for cutting-edge AI products. This is a role for engineers who enjoy owning backend services end-to-end – from design to deployment and everything in between. You'll play a pivotal role in building secure, scalable APIs, optimising infrastructure, and integrating backend services directly with AI models and real … chance to define best practices from the ground up in a company that genuinely values engineering excellence. Why This Role is Great In this role, you’ll get to: Design scalable backend architecture using FastAPI and Python for high-performance workloads Build and maintain robust APIs following RESTful conventions and OpenAPI/Swagger standards Own the performance of PostgreSQL … your knowledge of CI/CD tools like GitHub Actions or Argo CD to ship high-quality code fast Be hands-on with authentication systems (OAuth2, OIDC) and secure API design Operate with a security-first mindset , using tools like GuardDuty, CloudWatch, and IAM best practices Grow in a high-trust, high-ownership culture where autonomy is valued More ❯
Posted:

Contract - Back End Developer - Python/AWS - £500-£700/day (Outside IR35) - ID44270

Oxford, Oxfordshire, UK
Humand Talent
or Flask) to architect and deliver production-grade systems for cutting-edge AI products. This is a role for engineers who enjoy owning backend services end-to-end – from design to deployment and everything in between. You'll play a pivotal role in building secure, scalable APIs, optimising infrastructure, and integrating backend services directly with AI models and real … chance to define best practices from the ground up in a company that genuinely values engineering excellence. Why This Role is Great In this role, you'll get to: Design scalable backend architecture using FastAPI and Python for high-performance workloads Build and maintain robust APIs following RESTful conventions and OpenAPI/Swagger standards Own the performance of PostgreSQL … your knowledge of CI/CD tools like GitHub Actions or Argo CD to ship high-quality code fast Be hands-on with authentication systems (OAuth2, OIDC) and secure API design Operate with a security-first mindset, using tools like GuardDuty, CloudWatch, and IAM best practices Grow in a high-trust, high-ownership culture where autonomy is valued More ❯
Employment Type: Full-time
Posted:

Software Architect

Cheshire East, Cheshire, UK
Hybrid / WFH Options
Uniting Ambition
plus excellent benefits Cheshire (hybrid) Shape the next generation of software architecture for critical medical services, with worldwide reach and millions of customers benefiting from the new technology. Design and build multi-tenant SaaS solutions, working closely with engineering squads, product owners and the senior management team, to create a first class architecture. Full application, database, security architecture. Leveraging …/large environments Experience designing and delivering cloud platform solutions, ideally with the AWS well architected framework Domain driven architecture and hexagonal architecture knowledge and experience Strong background in API design, multi-tenant applications, data structures, design patterns, testing methodologies.. Get in touch for a more detailed spec please MandyKettle@unitingambition.com Hybrid working, offices are very smart More ❯
Employment Type: Part-time
Posted:

Software Architect

Cheshire East, England, United Kingdom
Hybrid / WFH Options
Uniting Ambition
plus excellent benefits Cheshire (hybrid) Shape the next generation of software architecture for critical medical services, with worldwide reach and millions of customers benefiting from the new technology. Design and build multi-tenant SaaS solutions, working closely with engineering squads, product owners and the senior management team, to create a first class architecture. Full application, database, security architecture. Leveraging …/large environments Experience designing and delivering cloud platform solutions, ideally with the AWS well architected framework Domain driven architecture and hexagonal architecture knowledge and experience Strong background in API design, multi-tenant applications, data structures, design patterns, testing methodologies.. Get in touch for a more detailed spec please MandyKettle@unitingambition.com Hybrid working, offices are very smart More ❯
Posted:

Software Architect

east anglia, united kingdom
Hybrid / WFH Options
Uniting Ambition
plus excellent benefits Cheshire (hybrid) Shape the next generation of software architecture for critical medical services, with worldwide reach and millions of customers benefiting from the new technology. Design and build multi-tenant SaaS solutions, working closely with engineering squads, product owners and the senior management team, to create a first class architecture. Full application, database, security architecture. Leveraging …/large environments Experience designing and delivering cloud platform solutions, ideally with the AWS well architected framework Domain driven architecture and hexagonal architecture knowledge and experience Strong background in API design, multi-tenant applications, data structures, design patterns, testing methodologies.. Get in touch for a more detailed spec please MandyKettle@unitingambition.com Hybrid working, offices are very smart More ❯
Posted:

Fullstack Engineer

sheffield, south yorkshire, yorkshire and the humber, united kingdom
Hybrid / WFH Options
Octopus Energy
given day you'll likely... Work collaboratively across the company to continuously refine how our platform can create the greatest impact, scale efficiently, and operate reliably for our users Design, develop, and maintain features for the MOPO Platform that enhance functionality and user experience Optimise database performance and ensure efficient data storage and retrieval for our growing network Build … following experience... Strong proficiency in Python and Django for backend development Good working knowledge of (or similar Javascript framework, e.g. React) In-depth knowledge of MariaDB and SQL RESTful API design and development Version control systems (e.g., Git) and CI/CD pipelines Web security best practices and performance optimization Server deployment and maintenance (e.g. nginx, cron, package More ❯
Posted:

.NET Developer

Cambridge, Cambridgeshire, England, United Kingdom
Hybrid / WFH Options
Avanti
a single intelligent platform. We’ve been doing this since 2002, and today we’re driving forward a major migration to Azure, combining legacy .NET applications with new Blazor, API and data-driven solutions. The Role We’re looking for a skilled .NET Developer to join our small, senior-led team. This is a hands-on role where you … ll be involved in everything from legacy migration to greenfield product development. You’ll work closely with our Technical Director and senior developers to design, build, and deploy robust applications that power personalised customer communications across the travel sector. Key Responsibilities Develop and maintain applications in C#, .NET, SQL Server, and Blazor Migrate older Web Forms systems into modern … Azure-based solutions Design and consume APIs using Entity Framework Core Work across front-end and back-end components (HTML, CSS, JavaScript) Collaborate on architecture, planning and continuous deployment pipelines Contribute to R&D projects, driving new innovation About You You’re a self-sufficient, full-stack developer who loves to solve problems, modernise systems, and build high-quality More ❯
Employment Type: Full-Time
Salary: £50,000 - £60,000 per annum
Posted:

Engineering Manager

Manchester, England, United Kingdom
Hybrid / WFH Options
Suits Me
team of engineers, helping them grow technically and professionally Owning delivery of critical platform services that power Suits Me's financial products Overseeing the full development lifecycle, from architectural design and planning to deployment, observability, and continuous improvement Establishing engineering standards, including code quality, CI/CD, testing, and documentation practices Driving adoption of best practices around API design, data modelling, and event-driven architectures Partnering with Product, Platform, and Security teams to ensure our systems are robust, scalable, and compliant Managing technical priorities, resource planning, and delivery schedules in line with strategic goals Contributing to longer-term technology strategy and roadmap evolution What you’ll bring to Suits Me Proven experience managing or technically leading … a backend or platform engineering team Strong foundation in modern backend technologies - ideally including Node.js/TypeScript, containers, and serverless architectures Deep understanding of system design, distributed systems, and operational reliability Familiarity with cloud-native development (AWS preferred) Excellent communication skills and the ability to align technical delivery with business objectives A collaborative, supportive leadership style that promotes autonomy More ❯
Posted:

Engineering Manager

warrington, cheshire, north west england, united kingdom
Hybrid / WFH Options
Suits Me
team of engineers, helping them grow technically and professionally Owning delivery of critical platform services that power Suits Me's financial products Overseeing the full development lifecycle, from architectural design and planning to deployment, observability, and continuous improvement Establishing engineering standards, including code quality, CI/CD, testing, and documentation practices Driving adoption of best practices around API design, data modelling, and event-driven architectures Partnering with Product, Platform, and Security teams to ensure our systems are robust, scalable, and compliant Managing technical priorities, resource planning, and delivery schedules in line with strategic goals Contributing to longer-term technology strategy and roadmap evolution What you’ll bring to Suits Me Proven experience managing or technically leading … a backend or platform engineering team Strong foundation in modern backend technologies - ideally including Node.js/TypeScript, containers, and serverless architectures Deep understanding of system design, distributed systems, and operational reliability Familiarity with cloud-native development (AWS preferred) Excellent communication skills and the ability to align technical delivery with business objectives A collaborative, supportive leadership style that promotes autonomy More ❯
Posted:

Engineering Manager

bolton, greater manchester, north west england, united kingdom
Hybrid / WFH Options
Suits Me
team of engineers, helping them grow technically and professionally Owning delivery of critical platform services that power Suits Me's financial products Overseeing the full development lifecycle, from architectural design and planning to deployment, observability, and continuous improvement Establishing engineering standards, including code quality, CI/CD, testing, and documentation practices Driving adoption of best practices around API design, data modelling, and event-driven architectures Partnering with Product, Platform, and Security teams to ensure our systems are robust, scalable, and compliant Managing technical priorities, resource planning, and delivery schedules in line with strategic goals Contributing to longer-term technology strategy and roadmap evolution What you’ll bring to Suits Me Proven experience managing or technically leading … a backend or platform engineering team Strong foundation in modern backend technologies - ideally including Node.js/TypeScript, containers, and serverless architectures Deep understanding of system design, distributed systems, and operational reliability Familiarity with cloud-native development (AWS preferred) Excellent communication skills and the ability to align technical delivery with business objectives A collaborative, supportive leadership style that promotes autonomy More ❯
Posted:
API Design
England
10th Percentile
£52,500
25th Percentile
£61,250
Median
£75,000
75th Percentile
£98,125
90th Percentile
£126,250