51 to 75 of 219 API Design Jobs in England

and automate their Platform as a Service (PaaS) environment. What You’ll Be Doing: Own architecture and technical decisions across squads; accountable for how software is built and shipped. Design and develop distributed, scalable microservices (C# .NET Core or Node.js) and REST/JSON APIs. Build modern React + TypeScript UIs with component-driven design, advanced state management … and reusable frameworks. Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM) to deliver secure, event-driven systems. Embed testing-first practices (TDD/BDD, contract tests, Jest/RTL, Playwright/Cypress, xUnit/NUnit) to raise code quality. Implement modern CI/CD (GitHub Actions) and Infrastructure as Code (Terraform, CloudFormation, AWS CDK … . Model secure-by-design principles; ensure robust authentication/authorisation (OAuth2, JWT) and data governance. Mentor engineers, set patterns, run PoCs, and unblock complex problems across squads. Champion “Always ship each cycle”; partner with Product to balance scope, delivery, and quality. Drive modernisation: sunset legacy code, reduce tech debt, and improve performance, reliability, and observability. Who We’re More ❯

and automate their Platform as a Service (PaaS) environment. What You’ll Be Doing: Own architecture and technical decisions across squads; accountable for how software is built and shipped. Design and develop distributed, scalable microservices (C# .NET Core or Node.js) and REST/JSON APIs. Build modern React + TypeScript UIs with component-driven design, advanced state management … and reusable frameworks. Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM) to deliver secure, event-driven systems. Embed testing-first practices (TDD/BDD, contract tests, Jest/RTL, Playwright/Cypress, xUnit/NUnit) to raise code quality. Implement modern CI/CD (GitHub Actions) and Infrastructure as Code (Terraform, CloudFormation, AWS CDK … . Model secure-by-design principles; ensure robust authentication/authorisation (OAuth2, JWT) and data governance. Mentor engineers, set patterns, run PoCs, and unblock complex problems across squads. Champion “Always ship each cycle”; partner with Product to balance scope, delivery, and quality. Drive modernisation: sunset legacy code, reduce tech debt, and improve performance, reliability, and observability. Who We’re More ❯

big and taking risks. In this project you will be working on a project utilizing Python, Django & databases including Oracle, MySQL and PostgreSql. Responsibilities: Understand/apply reusable code design, leverage application architecture/framework capabilities and functionality, and design/develop solutions that are highly reliable, scalable, and perform to meet business-defined service levels. Work with … solutions are built and tested. Employ Agile engineering practices, Pair Programming, Continuous Integration, Test Driven Development, etc. Identify and implement improvements to products. Contribute to the technical code and design documentation. Requirements: Strong proficiency in Python, with hands-on experience in Django. Proficient with Sql and ideally a strong background in Relational Databases (Oracle, MySQL, PostgreSql) Experience with build … Nice to have skills: Experience of Web UI frameworks such as REACT or Angular is advantageous. Experience in Cloud and Container based application development is advantageous. Expertise in software design using SOLID or GRASP is advantageous. Knowledge of data modelling/schema design is advantageous. Exposure to Microservice architecture, REST API design/development is advantageous. More ❯

of perspectives who are thinking big and taking risks. In this project you will be working on a project utilizing Python, Django & SQL. Responsibilities: Understand/apply reusable code design, leverage application architecture/framework capabilities and functionality, and design/develop solutions that are highly reliable, scalable, and perform to meet business-defined service levels. Work with … solutions are built and tested. Employ Agile engineering practices, Pair Programming, Continuous Integration, Test Driven Development, etc. Identify and implement improvements to products. Contribute to the technical code and design documentation. Requirements: Strong proficiency in Python, with hands-on experience in Django. Proficient with Sql and ideally a strong background in Relational Databases (Oracle, MySQL, PostgreSql) Experience with build … Nice to have skills: Experience of Web UI frameworks such as REACT or Angular is advantageous. Experience in Cloud and Container based application development is advantageous. Expertise in software design using SOLID or GRASP is advantageous. Knowledge of data modelling/schema design is advantageous. Exposure to Microservice architecture, REST API design/development is advantageous. More ❯

We’re Looking For A strong communicator and a true team player, you'll bring experience in most of the following: Tech Stack C# .NET Core React & TypeScript Web API Docker/Kubernetes AWS or Azure Git SQL/NoSQL Ways of Working Agile/Scrum TDD, CI/CD, DevOps SOLID principles RESTful API design What More ❯

Senior Java Developer – AWS Cloud Platform Nottingham – Hybrid Full time – permanent We are seeking a Senior Software Engineer to design, develop, and deploy scalable, secure, and high-performing applications on the AWS Cloud platform. You will play a key role in shaping new features that are both delightful and essential to users, while ensuring robust architecture and high-quality … Architecture, and Engineering teams to bring innovative ideas to life, own and lead development on team-owned components, and contribute to continuous improvement within your technical domain. Key Responsibilities: Design, develop, and deploy cloud-native applications on AWS, leveraging services such as EC2, Lambda, S3, API Gateway, RDS, and CloudFormation. Collaborate with Product Management and stakeholders to translate … business requirements into technical solutions. Own and lead development of team-owned components and features, ensuring maintainability, scalability, and performance. Contribute to the design and implementation of microservices and APIs using Java, Spring Boot, and Spring Cloud. Participate in code reviews, technical discussions, and architecture design sessions to uphold engineering excellence. Ensure robust CI/CD pipelines for More ❯

practice and technology to all areas of our business specifically designed for our global reach. About the Role We're seeking a Principal Full Stack Engineer to lead the design, development, and scaling of AI-powered digital products that serve infrastructure, engineering, and consulting professionals around the globe. This is a hands-on leadership role that blends deep technical … providing technical direction and mentoring a small cross-functional team of engineers and data scientists, helping ensure excellence and strong delivery outcomes. What You'll Do Build scalable products: Design, build and maintain robust, secure full-stack applications that integrate AI/ML models and serve our external clients and internal users across Mott MacDonald at global scale. Lead … including CloudWatch, Sentry, or DataDog, to ensure application stability, performance optimisation, and effective issue resolution Experience managing or mentoring engineering teams, including cross-functional collaboration. Understanding of secure architecture, API design, and performance optimisation. Experience with modern DevOps practices including CI/CD, containerisation (Docker, Kubernetes), and infrastructure as code (Terraform). Why Join Us Build purposeful, high More ❯

software company that delivers end-to-end cloud solutions for practices and businesses. Youll work with innovative tools, a collaborative culture and meaningful career progression Role Overview: You'll design and implement the API infrastructure that enables our product, third party integrations, our users and AI services to interact with our established product portfolio. Working with autonomy and … technical ownership, you'll architect scalable, secure APIs that handle sensitive payroll and accounting data while enabling rapid deployment of AI capabilities across our business. Key Responsibilities: Design and implement RESTful APIs that expose product capabilities to AI services and third-party integrations Build production-grade APIs using C# .NET, SQL, and Azure services Write clean, maintainable, well-tested … C# .NET skillsfor building APIs and services Solid SQL knowledgeincluding database querying, basic optimization, and working with relational databases Experience building RESTful APIsfor web or mobile applications Understanding of API design principlesincluding REST conventions, HTTP methods, status codes, and error handling Familiarity with authenticationusing OAuth, JWT, or API keys Azure cloud exposure- you've worked with or More ❯

telemetry, log ingestion, and event correlation across distributed systems. While familiarity with platforms like Splunk or Dynatrace is a plus, we value platform-agnostic thinking and the ability to design resilient, scalable logging solutions using the best-fit tools for the environment. As a Lead Software Engineer, you will drive the design, implementation, and evolution of our observability … infrastructure-as-code (IaC) and configuration management tools. · Conduct observability code reviews and implement automated validation checks. · Build AI-native tools for autonomous issue detection and resolution. · Lead the design of distributed systems focused on reliability, scalability, and performance. · Manage data routing, transformation, and endpoint monitoring integrations. · Mentor junior engineers and foster a culture of continuous improvement. · Collaborate across … architecture and AI Ops o CI/CD (eg. GitHub Actions, Azure DevOps) o Infrastructure as Code (eg. Terraform, Ansible) o Cloud-native development (eg. Azure, AWS, GCP) o API design (eg. REST, gRPC) · Proven leadership and mentoring experience. · Agile delivery experience and strategic thinking around observability maturity. Preferred Qualifications 5+ years with a technical bachelor's degree More ❯

development teams in commercial or enterprise settings Strong technical background in C#, .NET Core, MVC, Angular, SQL Server Working knowledge of PHP (Laravel preferred) Deep understanding of SOLID principles, design patterns, and RESTful API design Hands-on experience with CI/CD pipelines and agile delivery (TeamCity, Octopus Deploy, GitLab CI/CD) Excellent communication and stakeholder … teams across .NET and PHP Deliver high-quality software through structured planning and pragmatic execution Balance short-term delivery with long-term system stability and scalability Contribute to technical design, code reviews, and issue resolution Champion clean code, modular architecture, and disciplined CI/CD practices Manage resourcing across permanent and contract teams Support recruitment, onboarding, and professional development More ❯

evolve and automate their Platform as a Service (PaaS) environment. What Youll Be Doing: Own architecture and technical decisions across squads; accountable for how software is built and shipped. Design and develop distributed, scalable microservices (C# .NET Core or Node.js) and REST/JSON APIs. Build modern React + TypeScript UIs with component-driven design, advanced state management … and reusable frameworks. Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM) to deliver secure, event-driven systems. Embed testing-first practices (TDD/BDD, contract tests, Jest/RTL, Playwright/Cypress, xUnit/NUnit) to raise code quality. Implement modern CI/CD (GitHub Actions) and Infrastructure as Code (Terraform, CloudFormation, AWS CDK … . Model secure-by-design principles; ensure robust authentication/authorisation (OAuth2, JWT) and data governance. Mentor engineers, set patterns, run PoCs, and unblock complex problems across squads. Champion Always ship each cycle; partner with Product to balance scope, delivery, and quality. Drive modernisation: sunset legacy code, reduce tech debt, and improve performance, reliability, and observability. Who Were Looking More ❯

Lead - Liverpool | Hybrid | £70,000-£80,000 DOE About the Role We're looking for a Technical Lead with deep expertise in the Microsoft technology stack to lead the design, development, and delivery of robust software solutions. This role combines hands-on technical leadership with mentorship and strategic oversight - ideal for someone who thrives at the intersection of architecture … coding, and team enablement. Key Responsibilities Lead technical design and development across projects built on the Microsoft stack (e.g., .NET Core, C#, Azure, SQL Server). Architect scalable, secure, and maintainable solutions aligned with business goals and best practices. Guide and mentor developers , performing code reviews and fostering an environment of technical excellence. Collaborate cross-functionally with product managers … with strong hands-on expertise in C# and .NET/.NET Core . Proven experience designing and delivering cloud-native applications on Microsoft Azure . Strong knowledge of RESTful API design , Microservices architecture , and event-driven systems . Proficiency with SQL Server and ORM frameworks (e.g., Entity Framework). Experience with DevOps tools (Azure DevOps, GitHub Actions, or More ❯

day you will: Lead a cross-functional engineering team through discovery, delivery, and optimisation Ship clean, well-tested code across the full stack (React/JS + .NET Core) Design and evolve API-driven, event-enabled architecture Own systems end-to-end with real DevOps autonomy Champion engineering best practices — CI/CD, observability, automated testing, modern cloud … patterns Help define our engineering culture, ways of working, and standards Collaborate closely with Product, Design, Data and Platform teams to build experiences used at scale We're looking for a Lead Engineer, who thrives in a modern engineering culture (DevOps, cloud-native thinking, CI/CD, and strong craftsmanship), wants to build experiences used by millions every day … React/JavaScript on the front end + .NET Core on the back Strong AWS knowledge — we love serverless, containers, and building things the “right” cloud-native way Excellent API design skills and experience running distributed systems Someone who cares about Agile delivery, DevOps principles, and craftsmanship A leader who loves mentoring engineers and lifting teams The ability More ❯

Fullstack Developer(AI) to help build the next generation of intelligent, personalized financial platforms. This role blends modern front-end engineering with AI-powered workflows, automation, and human-centered design to deliver seamless digital experiences for users across global markets. You'll join a lean, high-impact product and engineering team where autonomy, creativity, and rapid iteration are core … to how we work. We use AI as a force multiplier-amplifying human creativity, streamlining development, and unlocking new possibilities in financial technology. 🔧 Responsibilities Collaborate with design, backend, and data teams to deliver adaptive, scalable web experiences. Optimize personalization and tracking systems while ensuring accessibility, privacy, and security compliance. Scout and implement AI-driven tools to enhance development workflows … content compatible with AI workflows. Break down complex projects into agile deliverables and contribute to technical documentation. 🧠 Requirements Strong front-end engineering skills (React, TypeScript/JavaScript, CSS, responsive design). Experience with AI-enhanced development tools (e.g., AI code assistants, automated testing, intelligent pipelines). Familiarity with headless CMS platforms and web content workflows. Understanding of web analytics More ❯

Solution Architect Permanent role Job Location : London ( Hybrid) Languages: C#, Python, SǪL Tech Stack: Azure GCP, DDD, EDA, Microservices, API Integration, Distributed Systems Architecture Frameworks: TOGAF, Well Architected, CNCF Cloud Platforms: Microsoft Azure, K8s, familiarity with AWS, Google Cloud Platform Must Have : TOGAF certification, Cloud experience (Azure), Terraform, CI/CD (ADO/GHA), API design and … integration Technologies: EDA, Microservices, API Integration, DDD, Distributed Systems Tools: Visio, UML, Ardoc, Enterprise Architect, Terraform, ADO (for CI/CD), Docker, Kubernetes Nice to Have : Financial Industry experience, Kubernetes, Docker, Experience with security and compliance frameworks (ISO27001 More ❯

The team values clean code, automation, and continuous improvement—and they’re looking for someone who shares that mindset. Key responsibilities as the Senior Back-End Software Engineer are: Design and develop backend services using Node.js and TypeScript , deployed in a cloud-native environment. Build and maintain GraphQL and REST APIs to support a range of digital products and … technologies and bring innovative ideas to the team. Skills & Experience needed: Essential: Strong experience with Node.js and TypeScript Proven background in microservices architecture Solid understanding of GraphQL and RESTful API design Experience with SQL and NoSQL databases Familiarity with CI/CD, automated testing, and modern development workflows Desirable: Experience with Azure or other cloud platforms Knowledge of More ❯

Full-Stack Development Solid software engineering background with proficiency in Python, JavaScript/TypeScript, Java, or Go Experience with modern frameworks (React, Node.js, Django, FastAPI) Knowledge of microservices architecture, API design (REST, GraphQL) Experience with containerization (Docker, Kubernetes) and cloud-native development patterns DevOps & SRE Practices Experience implementing CI/CD pipelines and DevOps methodologies Knowledge of infrastructure More ❯

Full-Stack Development Solid software engineering background with proficiency in Python, JavaScript/TypeScript, Java, or Go Experience with modern frameworks (React, Node.js, Django, FastAPI) Knowledge of microservices architecture, API design (REST, GraphQL) Experience with containerization (Docker, Kubernetes) and cloud-native development patterns DevOps & SRE Practices Experience implementing CI/CD pipelines and DevOps methodologies Knowledge of infrastructure More ❯

and Carlos Cadenas (Index Ventures, GoCardless, Skyscanner). The Role: Technical Lead We are looking for a Technical Lead to join our high-calibre software engineering team. You will design, build, and maintain the core services and APIs that power our proprietary platform, with opportunities to contribute to both back-end and front-end codebases, and explore AI & LLMs … you will help drive the next evolution of our platform, designing architecture, managing engineers and shaping how we integrate AI and large language models into our products and workflows. Design, implement, and maintain scalable back-end services and APIs (primarily in Go, with Python for scripting and data). Mentor and manage team members and share knowledge across disciplines. … Lead by example, build fast and help shape our technical roadmap. Take full lifecycle ownership of end-to-end delivery — from technical design and implementation through to testing, deployment, and monitoring. Contribute to front-end code (VueJS) as needed, supporting a collaborative, full stack environment. Work with relational databases (Postgres) and NoSQL solutions (e.g., MongoDB, Redis). Participate in More ❯

we scale, we’re looking for talented Java Engineers with strong Spring Boot experience to join our high-impact engineering team. The Role: As a Java Engineer, you’ll design, build, and optimise Microservices that power our AI-enabled security analytics platform. You’ll work closely with data scientists, DevOps engineers, and product teams to deliver secure, scalable, and … high-performance services. What You’ll Do: Develop and maintain Java-based microservices using Spring Boot Build highly available, distributed systems for real-time threat intelligence Collaborate on architecture, API design, and system optimisation Implement secure coding practices and contribute to our cybersecurity standards Work in a cloud-native environment (AWS/GCP/Azure) using CI/… with cross-functional teams to ship reliable, enterprise-grade features What We’re Looking For: Strong commercial experience with Java 11+ Expertise in Spring Boot, Spring Cloud, and RESTful API development Experience building microservices in distributed systems Understanding of cloud platforms (AWS/GCP/Azure) Familiarity with Docker, Kubernetes, or similar container technologies Knowledge of security principles or More ❯

we scale, we’re looking for talented Java Engineers with strong Spring Boot experience to join our high-impact engineering team. The Role: As a Java Engineer, you’ll design, build, and optimise Microservices that power our AI-enabled security analytics platform. You’ll work closely with data scientists, DevOps engineers, and product teams to deliver secure, scalable, and … high-performance services. What You’ll Do: Develop and maintain Java-based microservices using Spring Boot Build highly available, distributed systems for real-time threat intelligence Collaborate on architecture, API design, and system optimisation Implement secure coding practices and contribute to our cybersecurity standards Work in a cloud-native environment (AWS/GCP/Azure) using CI/… with cross-functional teams to ship reliable, enterprise-grade features What We’re Looking For: Strong commercial experience with Java 11+ Expertise in Spring Boot, Spring Cloud, and RESTful API development Experience building microservices in distributed systems Understanding of cloud platforms (AWS/GCP/Azure) Familiarity with Docker, Kubernetes, or similar container technologies Knowledge of security principles or More ❯

culture. Key Responsibilities: Architect and deliver full-stack solutions using modern .NET and JavaScript frameworks Lead the migration of legacy (WinForms/WPF) applications to web and cloud platforms Design and implement secure, scalable and maintainable cloud-native applications Define and uphold coding standards, design principles and development best practices Manage CI/CD pipelines to streamline deployment … Skills: Core: C#, .NET Core, SQL Frontend: JavaScript/TypeScript with React, Angular or Vue.js DevOps: Azure DevOps, CI/CD Pipelines Nice to Have: Docker, Kubernetes, Terraform, Microservices, API design The Lead .NET Developer role offers up to £90,000, plus annual bonus and benefits. You’ll work in a hybrid model (2 days a week onsite More ❯

Principal Web Engineer at MHR, you're not just writing code – you're architecting the future of software solutions. You'll drive excellence in every aspect, from user interface design to maintaining a high-quality code base, collaborating with like-minded Web Developers, shaping innovative solutions, and coaching the team to tackle complex business challenges head-on. Working hybrid … proof of concepts to de-risk delivery and elucidate intricate concepts. Elevate coding standards by automating processes, ensuring extensive test coverage for sustainable delivery. Provide essential guidance during planning, design reviews, and incident management to empower web engineers. Cultivate consensus among peers on cutting-edge technologies and best practices. Play a vital role in recruitment campaigns, hiring highly skilled … working on and building modern enterprise Angular applications. Solid understanding of HTML/HTML5, JavaScript/Typescript, CSS/SASS Good understanding of the following: Accessibility, Responsive and Adaptive design, working with UX/UI design documents Knowledge of the following: Web security, RESTful Web Services Experience with modern unit testing frameworks and methodologies. Strong understanding of RESTful More ❯

Principal Web Engineer at MHR, you're not just writing code – you're architecting the future of software solutions. You'll drive excellence in every aspect, from user interface design to maintaining a high-quality code base, collaborating with like-minded Web Developers, shaping innovative solutions, and coaching the team to tackle complex business challenges head-on. Working hybrid … proof of concepts to de-risk delivery and elucidate intricate concepts. Elevate coding standards by automating processes, ensuring extensive test coverage for sustainable delivery. Provide essential guidance during planning, design reviews, and incident management to empower web engineers. Cultivate consensus among peers on cutting-edge technologies and best practices. Play a vital role in recruitment campaigns, hiring highly skilled … working on and building modern enterprise Angular applications. Solid understanding of HTML/HTML5, JavaScript/Typescript, CSS/SASS Good understanding of the following: Accessibility, Responsive and Adaptive design, working with UX/UI design documents Knowledge of the following: Web security, RESTful Web Services Experience with modern unit testing frameworks and methodologies. Strong understanding of RESTful More ❯

to the development of core components of our stack—from designing performant transpilation passes and hardware integrations to expanding our cloud‐native SDK and CI/CD pipelines. Responsibilities Design and implement the hybrid quantum‐classical workflow orchestration. Integrate advanced error‐mitigation techniques, develop novel quantum application primitives, and optimize system performance (including low-level implementations where necessary). … as: Quantum circuit optimization Gate decomposition and mapping DAG structures and graph manipulation Basis gate sets and device-specific transformations Experience working close to quantum hardware APIs. Experience of API-level interaction and understanding of device-specific properties (e.g., coherence times, gate fidelities, execution queues) Requirements Strong experience in Python and modern software engineering practices Be comfortable with low … level programming when needed (e.g. C++, Rust, C) Strong software engineering background, including: Design patterns Data structures and algorithms API design (REST) Working with databases (SQL and NoSQL) Writing documentation and integration tests Understanding of functional programming concepts (e.g. monoids, composition, higher-order functions) Familiarity with quantum computing concepts such as: Quantum circuits Measurements, observables Noise channels More ❯