51 to 75 of 171 API Design Jobs in the UK excluding London

to help drive the evolution of its internal software platforms. This is a hands-on, full-stack role focused on the Microsoft stack, with direct input into architecture, product design and team mentorship. Key Responsibilities Designing and developing internal and client-facing apps using C#/.NET (Core ideally) and Angular Implementing new features and improving legacy code with … Ideal Candidate Profile 4+ years of commercial software development experience Strong experience in C#, .NET, MS SQL, Entity Framework Exposure to Angular (or similar modern JavaScript frameworks) Skilled in API design, RESTful services, and structured data workflows Familiarity with Docker, AWS ECS, CI/CD pipelines, and Git Experience working in small agile teams Confidence refactoring and improving More ❯

a hands-on role in building scalable, reliable systems. Youll be working across a broad, cloud-native tech stack with a strong focus on microservices, real-time data, and API-first design. Its an ideal role for someone passionate about clean code, modern DevOps practices, and building systems that scale. Tech Snapshot: Languages & Frameworks: C#, .NET Core Cloud: AWS … C# and .NET Core in production systems Proven knowledge of AWS and designing cloud-native services Hands-on experience with Kubernetes in live environments Solid understanding of GraphQL and API design principles Exposure to infrastructure-as-code (e.g. Terraform ) and modern CI/CD pipelines Passion for clean, maintainable code and continuous improvement A collaborative mindset and a More ❯

implementing, and optimizing UI applications in a microservices-based environment. As a member of our team, you will contribute to all aspects of the software development lifecycle, including estimation, design, coding, test automation, code reviews, deployment, and support. Teams are responsible for specific services or products. Our solutions help airlines manage safe and high-performance flight operations. The Frontend … on, but not limited to, the skills and tech stack for Software Development around: Web and Mobile Frontends Vue.js, TypeScript HTML, CSS/SASS SPA, Micro frontends UX, Responsive Design, Accessibility Design Systems Unit testing, Functional testing Responsibilities: Extend existing infrastructure/architecture or propose new infrastructure/architecture to support new features Propose architecture design changes … to ease implementation/improve product behavior Coding, testing, documenting and debugging assigned development tasks to meet acceptance criteria Set standards for team members code submissions Propose changes at design level to make product testable Guides unit/feature testing creation on existing functions as well as new code Implement product features with limited specifications through engagement with stakeholders More ❯

implementing, and optimizing UI applications in a microservices-based environment. As a member of our team, you will contribute to all aspects of the software development lifecycle, including estimation, design, coding, test automation, code reviews, deployment, and support. Teams are responsible for specific services or products. Our solutions help airlines manage safe and high-performance flight operations. The Frontend … on, but not limited to, the skills and tech stack for Software Development around: Web and Mobile Frontends Vue.js, TypeScript HTML, CSS/SASS SPA, Micro frontends UX, Responsive Design, Accessibility Design Systems Unit testing, Functional testing Responsibilities: Extend existing infrastructure/architecture or propose new infrastructure/architecture to support new features Propose architecture design changes … to ease implementation/improve product behavior Coding, testing, documenting and debugging assigned development tasks to meet acceptance criteria Set standards for team members code submissions Propose changes at design level to make product testable Guides unit/feature testing creation on existing functions as well as new code Implement product features with limited specifications through engagement with stakeholders More ❯

Integration Engineer – SQL Server/Web & API Development Location: UK Remote Contract Length: Initial 6 months + extensions SDS: Inside IR35 Start Date: ASAP We're hiring an experienced Integration Engineer to support a large-scale enterprise transformation project, working across data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who … thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: • Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms • Develop and optimise SQL queries, stored procedures, and transformation logic • Build and consume RESTful and SOAP APIs • Work with XML, XSL, and JSON formats for data … to the continuous improvement of integration workflows What You’ll Bring: • Proven experience as an Integration Engineer, Software Developer, or Backend Engineer • Strong SQL Server skills (procedures, views, table design, indexing, optimisation) • Solid background in .NET Framework/.NET Core for API and backend development • Understanding of JavaScript and modern web service architectures • Familiar with both REST and More ❯

Key Responsibilities: Design and develop robust backend services and RESTful APIs using Python (FastAPI, Flask, or Django) Build and deploy microservices that are scalable, loosely coupled, and independently deployable Develop and manage serverless applications using AWS Lambda , API Gateway , DynamoDB , S3 , SNS , SQS , and Step Functions Implement event-driven architectures and data processing pipelines Collaborate with front-end … performance and scalability Required Skills & Experience: 7+ years of backend development experience using Python Strong experience in designing and implementing microservices Hands-on experience with AWS Serverless services: Lambda, API Gateway, S3, DynamoDB, SQS, SNS, etc. Proficient in RESTful API design , JSON, and OpenAPI/Swagger specifications Experience with asynchronous programming in Python (e.g., asyncio, aiohttp, FastAPI … Knowledge of CI/CD tools (e.g., GitHub Actions, Jenkins, CodePipeline) Familiarity with Docker and containerized deployments Strong understanding of software design patterns , clean code practices, and Agile methodologies More ❯

candidate will be responsible for designing, developing, and maintaining scalable backend systems, ensuring high performance and responsiveness to requests from front-end applications and third-party systems. Key Responsibilities: Design and develop robust backend services and RESTful APIs using Python (FastAPI, Flask, or Django) Build and deploy microservices that are scalable, loosely coupled, and independently deployable Develop and manage … serverless applications using AWS Lambda , API Gateway , DynamoDB , S3 , SNS , SQS , and Step Functions Implement event-driven architectures and data processing pipelines Collaborate with front-end developers, DevOps, and product teams to deliver high-quality software Ensure code quality through unit testing , integration testing , and code reviews Automate deployments using CI/CD pipelines and Infrastructure as Code (IaC … performance and scalability Required Skills & Experience: 7+ years of backend development experience using Python Strong experience in designing and implementing microservices Hands-on experience with AWS Serverless services: Lambda, API Gateway, S3, DynamoDB, SQS, SNS, etc. Proficient in RESTful API design , JSON, and OpenAPI/Swagger specifications Experience with asynchronous programming in Python (e.g., asyncio, aiohttp, FastAPI More ❯

Glasgow) Sector: Public IR35 Status: Inside Interview Process: 1 Stage via Microsoft Teams Required Architect with hands-on expertise in Java, MuleSoft, Apache Camel, and RabbitMQ to lead the design and implementation of scalable integration systems. Requires strong experience with event-driven architecture and enterprise integration principles, as well as the ability to deliver secure, robust, and performant messaging … solutions within a DevOps-enabled environment. Key Responsibilities Design scalable integration solutions using MuleSoft, RabbitMQ, and Apache Camel. Define reusable integration patterns and frameworks using enterprise models. Lead API and messaging designs aligned with REST, SOAP, and AMQP standards. Implement asynchronous architectures including pub-sub and event-driven flows. Develop MuleSoft flows and processors with Anypoint Studio and … security integration (encryption, authentication, access control). Solid understanding of microservices, distributed systems, and cloud-native architecture. Desirable Skills MuleSoft: Proficient in Mule 4, Anypoint Studio, Runtime Manager, Exchange, API design, message processors, DataWeave, and integration flows; solid grasp of API policies, error handling, and transaction scopes. RabbitMQ: Skilled in AMQP, exchanges (direct, topic, fanout), queues, bindings More ❯

APIs and AWS Lambda functions to support data processing and integration needs. Integrate SaaS applications with cloud environments, focusing on secure and efficient data flow. Use AWS services like API Gateway, Lambda, EventBridge, SNS, SQS, and Glue to implement integration solutions. Participate in technical discussions about API design, data flow, and integration strategies. Write clean, maintainable, and … delivery of tasks. Monitor, troubleshoot, and optimize integration workflows using AWS tools (CloudWatch, CloudTrail). Required Experience: 3+ years of software development experience, ideally with some system integration or API development exposure. Proficiency in Java or Python. Practical experience with AWS services such as Lambda, API Gateway, EventBridge, SQS, SNS, or Glue. Familiarity with RESTful APIs and API More ❯

helping to define and deliver phase 2 alongside a dedicated Project Manager. ->Build scalable, full-stack web applications using frameworks (PHP) and REST APIs. ->Work with MySQL for schema design, performance tuning, and data analysis. ->Create responsive, accessible UIs using JavaScript, HTML, CSS, and frameworks like Vue.js and React.js. ->Manage deployments and build automation with CI/CD pipelines. … Up | Salary Range £75K - £100K | 5 Days Per Week (after probation passed 3 Days Per Week) | Greater London Requirements: -> Experience developing backend systems in PHP. ->Strong grasp of REST API design and integration. ->Expertise in MySQL and relational databases. ->Proficiency in front-end development using a modern JS framework (Vue.js) ->Comfortable with GitHub workflows, version control, and collaborative More ❯

including digital marketplace, inventory management, vehicle servicing, merchandising, and fleet ownership. Collaborative Environment: Work closely with engineering, product, technology, transformation, and business partners across the UK and Europe to design next-generation, customer-facing, software-as-a-service applications. What You'll Do: Lead and Innovate: Drive collaborative solutioning efforts to understand business needs, define target state architecture, and … and Implement: Define cloud-native architecture solutions and collaborate with Product and Engineering teams for their implementation. Guide and Mentor: Lead teams of experienced architects and delivery leaders, facilitating design discussions, driving technical design reviews, and ensuring successful delivery. Communicate and Influence: Articulate solution designs to all levels of the organization and drive successful delivery throughout discovery, development … or relevant industry experience. Technical Expertise: Strong software engineering background with hands-on experience in .NET, AWS, SQL & No-SQL databases, and event-driven systems. Proficiency in coding, REST API design, microservice implementation, and container technologies like Docker and Kubernetes. Interpersonal Skills: Excellent communication skills, both verbal and written, with the ability to work with technical and non More ❯

Your responsibilities and tasks will include: Engage in all phases of application development, with a focus on coding and debugging in alignment with security standards throughout the entire lifecycle Design, build, and maintain efficient, reusable, and reliable code/APIs to support applications both for web and mobile Collaborate regularly in a cross-functional team made up of product … and related technologies Capable to use version control software such as GIT Knowledge of SOLID principles Knowledge of clean code practices Experience using web service protocols such as Rest, API design for extensibility and integration Experience debugging complex applications Experience with Agile development project management methodologies Database Development in SQL Server or NoSQL Databases Some familiarity of Docker More ❯

end engineer seeking a role where your impact is tangible and your expertise is recognised , this London-based opportunity offers the challenge and scope you're looking for. Responsibilities: Design, develop, and maintain Java-based backend services using Spring Boot, REST/GraphQL, Kafka, PostgreSQL, and RabbitMQ. Contribute to infrastructure modernisation efforts, working closely with DevOps teams on Kubernetes … through automation. Requirements: 7+ years of professional experience in software engineering, with a strong focus on Java backend development. Solid understanding of Spring Boot, Kafka, RabbitMQ, PostgreSQL, and modern API design patterns. Hands-on experience or familiarity with DevOps tools and concepts – e.g. Kubernetes, Git-based CI/CD, cloud infrastructure (AWS/GCP/Azure). Strong More ❯

full-stack development with a strong portfolio of successful large-scale projects. Work within a startup environment and travel-technology is also a plus. · Seeking an engineer who can design and build high-traffic systems that scale effortlessly under load. Must be fluent in optimizing backend performance and architecting resilient, low-latency infrastructure. · Proficient in modern JavaScript tools and … Lambda, and S3. · Familiarity with version control systems (e.g., Git) and continuous integration/deployment (CI/CD) practices. · Solid understanding of web security practices, including JWT authentication, secure API design, rate limiting, and familiarity with OWASP vulnerabilities. · Ability to troubleshoot and find solutions without needing hand-holding. Salary & Benefits 🎁 No two days are the same at Arcube. More ❯

styles. You've used tools like React Testing Library, Vitest, and Playwright to write reliable, maintainable tests for front-end applications. You're well-versed in software architecture and API design, and capable of delivering secure, scalable, and high-performance systems. You understand development frameworks, tooling, and best practices across the stack. You apply software principles and design More ❯

experience in some of these, but if not we'll help you with them AWS Certification at Associate level eg Solution Architect, Developer or DevOps Expertise in microservices and API design Docker, and container runtime platforms such as Kubernetes, EKS, ECS etc Strong understand of operational concepts on AWS, particularly monitoring and observability, FinOps UtilisingCI/CD tools More ❯

experience in some of these, but if not we'll help you with them AWS Certification at Associate level eg Solution Architect, Developer or DevOps Expertise in microservices and API design Docker, and container runtime platforms such as Kubernetes, EKS, ECS etc Strong understand of operational concepts on AWS, particularly monitoring and observability, FinOps UtilisingCI/CD tools More ❯

CSS, and modern web frameworks. Experience with SQL Server or similar relational databases, and familiarity with testing frameworks. Knowledge of the Microsoft Azure platform, RESTful services, SOAP, and scalable API design. Knowledge of frameworks and libraries like Vue.js, React, JSON, XML, MVC, and jQuery will be beneficial. Exposure to Docker, Kubernetes, Helm Charts, messaging systems like Kafka or RabbitMQ. More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯

Lead Software Engineer – UK Remote | £80,000 to £85,000 | Hands-on Leadership in Scalable Systems w/API Design Are you a technical leader ready to guide a high-performing engineering team? Do you enjoy mentoring others while staying close to architecture and system design? Interested in shaping tools that support real-world infrastructure at scale … others grow. Why This Role is Great Lead a talented team delivering software that supports the installation, configuration and maintenance of distributed systems at scale Balance hands-on technical design with mentoring and team development Collaborate across product, cloud, QA and systems engineering to deliver robust solutions Contribute to technical strategy, system architecture and future roadmaps Create real value … backend software projects TypeScript or Node.js development, or similar backend technologies Designing and deploying services in a modern cloud environment Working with databases (SQL or NoSQL) and scalable system design Agile delivery and team collaboration Building for maintainability, performance and clear documentation Experience or interest in the following would also be valuable: Managing or supporting connected devices or remote More ❯