101 to 125 of 265 API Design Jobs in the UK

the go-to technical voice for engineering and delivery, shaping how apps, services, and systems come together. It’s a varied role that mixes hands-on coding with architectural design and technical leadership. You’ll design and build modern environments, integrate multiple SaaS platforms, and help set the standards for how things are done across the organisation. You … cloud architecture • Infrastructure as code using Terraform and CloudFormation • Docker and Kubernetes • Automation and CI/CD pipelines • GitHub and GitHub Actions Software and Frameworks • React, Node, Next.js, Python • API design and integration • RESTful services and automation Data and Platforms • Salesforce • Google Workspace • Atlassian tools such as Jira and Confluence • Databases including DynamoDB, MongoDB, and RDS Security and … best practice You’ll bring a broad technical background, strong problem-solving ability, and the confidence to define the right approach. If you enjoy combining coding, cloud engineering, and design thinking, and want a role with purpose, autonomy, and impact, then this is for you. More ❯

the go-to technical voice for engineering and delivery, shaping how apps, services, and systems come together. It’s a varied role that mixes hands-on coding with architectural design and technical leadership. You’ll design and build modern environments, integrate multiple SaaS platforms, and help set the standards for how things are done across the organisation. You … cloud architecture • Infrastructure as code using Terraform and CloudFormation • Docker and Kubernetes • Automation and CI/CD pipelines • GitHub and GitHub Actions Software and Frameworks • React, Node, Next.js, Python • API design and integration • RESTful services and automation Data and Platforms • Salesforce • Google Workspace • Atlassian tools such as Jira and Confluence • Databases including DynamoDB, MongoDB, and RDS Security and … best practice You’ll bring a broad technical background, strong problem-solving ability, and the confidence to define the right approach. If you enjoy combining coding, cloud engineering, and design thinking, and want a role with purpose, autonomy, and impact, then this is for you. More ❯

the go-to technical voice for engineering and delivery, shaping how apps, services, and systems come together. It’s a varied role that mixes hands-on coding with architectural design and technical leadership. You’ll design and build modern environments, integrate multiple SaaS platforms, and help set the standards for how things are done across the organisation. You … cloud architecture • Infrastructure as code using Terraform and CloudFormation • Docker and Kubernetes • Automation and CI/CD pipelines • GitHub and GitHub Actions Software and Frameworks • React, Node, Next.js, Python • API design and integration • RESTful services and automation Data and Platforms • Salesforce • Google Workspace • Atlassian tools such as Jira and Confluence • Databases including DynamoDB, MongoDB, and RDS Security and … best practice You’ll bring a broad technical background, strong problem-solving ability, and the confidence to define the right approach. If you enjoy combining coding, cloud engineering, and design thinking, and want a role with purpose, autonomy, and impact, then this is for you. More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by writing and reviewing code, setting engineering standards and guiding architecture in order to enable … engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the design, architecture, and development of high-quality software systems f or airline-operations products. Collaborate with relevant product managers, QE leads and to understand technical direction, project scope, and roadmaps … for relevant mission. Design, develop, and maintain automated test frameworks and tools to ensure high-quality software releases and streamline the development process. Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement. Own the technical delivery of key product features, ensuring they meet performance, security, and scalability requirements. Champion modern More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

with data scientists, product managers, and other engineers to build systems that enable insight, automation, and intelligent data-driven decision-making at scale. Your main responsibilities will be to: •Design, develop, and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. •Build scalable RESTful APIs and backend services using modern frameworks and … end technologies (HTML/CSS, JavaScript, React or similar). •Experience working with containerised applications (e.g. Docker, Swarm or Kubernetes) in a Linux-based environment. •Solid understanding of RESTful API design, microservices architectures, and asynchronous workflows. •Familiarity with ETL processes, data warehousing and distributed systems. Not necessary for you apply, but would be great if you also have More ❯

generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and mobile domains. It's an opportunity to design, architect and build a modern frontend using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation … scale, regulated environments - ideally in Investment, Asset or Wealth Management. Solid experience in building and deploying frontend applications in React or React Native with hands-on knowledge of secure API design and authentication services. Experience in Java and Spring Boot, or iOS (Swift) or Android (Kotlin) along with exposure to Figma and Vercel is a big plus. Capable More ❯

generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and mobile domains. It's an opportunity to design, architect and build a modern frontend using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation … scale, regulated environments - ideally in Investment, Asset or Wealth Management. Solid experience in building and deploying frontend applications in React or React Native with hands-on knowledge of secure API design and authentication services. Experience in Java and Spring Boot, or iOS (Swift) or Android (Kotlin) along with exposure to Figma and Vercel is a big plus. Capable More ❯

until the problem is solved. You need to be outcomes driven and be able to proactively identify and solve these problems to achieve that outcome. Responsibilities Your responsibilities include: Design, develop, and deploy robust backend services using Java and Spring Boot Build scalable APIs Analyse schemas and write optimised SQL queries against large data sets Collaborate with DevOps on More ❯

decision-making — bringing clarity and cohesion to a complex technology landscape. What you’ll be doing Designing and delivering enterprise-grade SaaS architectures for performance, scalability, and security. Leading design discussions, setting standards, and ensuring alignment across multiple product teams. Driving the modernisation of legacy systems and enabling reusable, API-first architectures. Partnering with engineering, product, and security … Architect or Principal Engineer within a complex, large-scale software environment. Strong background in .NET, cloud-native development (AWS or Azure) , and event-driven microservices . Deep understanding of API design, containerisation (Docker/Kubernetes) , and SQL/NoSQL database technologies. A passion for simplification, scalability, and pragmatic delivery. Strong stakeholder management and communication skills across technical and … business audiences. Hands-on, delivery-focused approach — you take ownership from design through to production. Why join? This is an opportunity to make a tangible impact within an established, well-funded organisation undergoing a significant technical transformation. Our client offers a collaborative, engineering-led culture where architecture has influence, innovation is encouraged, and delivery excellence is expected. If you More ❯

decision-making — bringing clarity and cohesion to a complex technology landscape. What you’ll be doing Designing and delivering enterprise-grade SaaS architectures for performance, scalability, and security. Leading design discussions, setting standards, and ensuring alignment across multiple product teams. Driving the modernisation of legacy systems and enabling reusable, API-first architectures. Partnering with engineering, product, and security … Architect or Principal Engineer within a complex, large-scale software environment. Strong background in .NET, cloud-native development (AWS or Azure) , and event-driven microservices . Deep understanding of API design, containerisation (Docker/Kubernetes) , and SQL/NoSQL database technologies. A passion for simplification, scalability, and pragmatic delivery. Strong stakeholder management and communication skills across technical and … business audiences. Hands-on, delivery-focused approach — you take ownership from design through to production. Why join? This is an opportunity to make a tangible impact within an established, well-funded organisation undergoing a significant technical transformation. Our client offers a collaborative, engineering-led culture where architecture has influence, innovation is encouraged, and delivery excellence is expected. If you More ❯

decision-making — bringing clarity and cohesion to a complex technology landscape. What you’ll be doing Designing and delivering enterprise-grade SaaS architectures for performance, scalability, and security. Leading design discussions, setting standards, and ensuring alignment across multiple product teams. Driving the modernisation of legacy systems and enabling reusable, API-first architectures. Partnering with engineering, product, and security … Architect or Principal Engineer within a complex, large-scale software environment. Strong background in .NET, cloud-native development (AWS or Azure) , and event-driven microservices . Deep understanding of API design, containerisation (Docker/Kubernetes) , and SQL/NoSQL database technologies. A passion for simplification, scalability, and pragmatic delivery. Strong stakeholder management and communication skills across technical and … business audiences. Hands-on, delivery-focused approach — you take ownership from design through to production. Why join? This is an opportunity to make a tangible impact within an established, well-funded organisation undergoing a significant technical transformation. Our client offers a collaborative, engineering-led culture where architecture has influence, innovation is encouraged, and delivery excellence is expected. If you More ❯

We are seeking a highly skilled and experienced Lead Mulesoft Developer to architect, design, and implement integration solutions using MuleSoft Anypoint Platform. The ideal candidate will have strong experience in Salesforce integration, SaaS platforms, and leading development teams in enterprise environments. Project Start Date : Dec'25/Jan'26 Key Responsibilities: Lead the design and development of integration … solutions using MuleSoft. Collaborate with cross-functional teams including Salesforce developers, architects, and business stakeholders. Develop APIs, orchestrations, and data transformations using MuleSoft Anypoint Studio. Ensure best practices in API design, security, and performance. Manage and mentor junior developers and provide technical guidance. Integrate various SaaS platforms and on-premise systems. Conduct code reviews, unit testing, and performance … documentation and support deployment processes. Required Skills: 8+ years of experience in integration development, with at least 5 years in MuleSoft. Strong hands-on experience with MuleSoft Anypoint Platform , API Manager , and Runtime Manager . Proven experience integrating Salesforce with other systems using MuleSoft. Deep understanding of RESTful APIs , SOAP , RAML , and JSON/XML . Experience with CI More ❯

We are seeking a highly skilled and experienced Lead Mulesoft Developer to architect, design, and implement integration solutions using MuleSoft Anypoint Platform. The ideal candidate will have strong experience in Salesforce integration, SaaS platforms, and leading development teams in enterprise environments. Project Start Date : Dec'25/Jan'26 Key Responsibilities: Lead the design and development of integration … solutions using MuleSoft. Collaborate with cross-functional teams including Salesforce developers, architects, and business stakeholders. Develop APIs, orchestrations, and data transformations using MuleSoft Anypoint Studio. Ensure best practices in API design, security, and performance. Manage and mentor junior developers and provide technical guidance. Integrate various SaaS platforms and on-premise systems. Conduct code reviews, unit testing, and performance … documentation and support deployment processes. Required Skills: 8+ years of experience in integration development, with at least 5 years in MuleSoft. Strong hands-on experience with MuleSoft Anypoint Platform , API Manager , and Runtime Manager . Proven experience integrating Salesforce with other systems using MuleSoft. Deep understanding of RESTful APIs , SOAP , RAML , and JSON/XML . Experience with CI More ❯

Solutions Architect (Integration | API Design)St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role … We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯

Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: £95,000 +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role … We're seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯

Solutions Architect (Integration | API Design) St Albans (Hybrid) £90,000 + Bonus + Lucrative Shares Scheme Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They’re seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and … services. The Role: We’re seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform — ensuring zero downtime throughout. In addition … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We’re Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯

Solutions Architect (Integration | API Design) St Albans (Hybrid) £90,000 + Bonus + Lucrative Shares Scheme Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They’re seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and … services. The Role: We’re seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform — ensuring zero downtime throughout. In addition … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We’re Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯

influence: you’ll own the internal AI stack, mentor other engineers, and help define how AI and automation are adopted across the company. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML systems for business intelligence. Build robust APIs, microservices, and data pipelines to power intelligent, data-driven tools. Develop retrieval-augmented generation … in Python plus at least one other backend language (TypeScript or Java preferred). Proven experience with AWS , containerisation, and infrastructure as code (Terraform, Docker). Solid understanding of API design, data modelling, and microservice architecture. Excellent communication skills, with the ability to translate technical outcomes into business impact. Tech Environment Languages: Python, TypeScript, Java AI/LLM More ❯

influence: you’ll own the internal AI stack, mentor other engineers, and help define how AI and automation are adopted across the company. What You’ll Do Lead the design, architecture, and implementation of internal AI/ML systems for business intelligence. Build robust APIs, microservices, and data pipelines to power intelligent, data-driven tools. Develop retrieval-augmented generation … in Python plus at least one other backend language (TypeScript or Java preferred). Proven experience with AWS , containerisation, and infrastructure as code (Terraform, Docker). Solid understanding of API design, data modelling, and microservice architecture. Excellent communication skills, with the ability to translate technical outcomes into business impact. Tech Environment Languages: Python, TypeScript, Java AI/LLM More ❯