1 to 25 of 30 Permanent API Design Jobs in the North of England

office) About the Role We're looking for a Senior Application Engineer with strong backend and cloud development expertise to help design and build scalable, secure services that power Internal Platforms. What You'll Do Design and build scalable backend services and APIs supporting mobile and event-driven … requirements through deployment and maintenance Provide technical guidance and mentorship to engineers within the team Promote best practices such as TDD, BDD, and secure API design Collaborate with technical leads, IT teams, and business stakeholders to deliver high-quality solutions Apply design patterns and engineering best practices ...

development aligns with OWASP secure coding standards Contributing to CI/CD pipeline improvements and secure deployment practices Participating in architecture and technical design reviews Collaborating with UI/UX teams using Figma prototypes Maintaining high-quality technical documentation Tech Stack & Experience Core technologies: .NET 10/ASP.NET Core … Entity Framework Core RESTful API design/OpenAPI/Swagger Angular 21 (mandatory) TypeScript/RxJS DevExpress DevExtreme v25 (mandatory) Microsoft Azure (App Services, SQL, Storage) Azure Entra ID Azure Key Vault Infrastructure as Code (Bicep preferred) CI/CD pipelines (Azure DevOps or equivalent) Bitbucket (Git) What ...

built. You'll also play a mentorship role - raising the engineering bar across the team and championing Responsible AI practices as we scale. Responsibilities Design scalable, secure, and fault-tolerant full-stack architectures that seamlessly blend traditional web services with generative AI components, ensuring high availability and resilience across … cost-optimised use of Azure AI APIs, GPU compute, and container orchestration resources Set the standard for code quality through comprehensive code reviews, technical design documents, and architectural decision records; mentor junior and mid-level engineers to grow their capabilities hampion Responsible AI practices including model evaluation, bias monitoring ...

digital transformation programme. With a rapidly growing customer base and multiple products operating across complex environments, the business is now strengthening its integration and API capability to ensure its platforms communicate seamlessly across internal systems, partners, and external services. This role sits within a highly collaborative engineering environment where … teams to enable reliable, secure, and high-performing integrations that support enterprise-level SaaS delivery. What You’ll Be Doing Designing and building scalable API-led integrations across a modern SaaS platform ecosystem Developing and maintaining RESTful APIs and event-driven integrations between internal services and third-party systems ...

autonomy over how things get built. You'll also play a mentorship role - raising the engineering bar across the team as we scale. Responsibilities Design scalable, secure, and fault-tolerant full-stack architectures, ensuring high availability and resilience across Azure-hosted environments Architect robust backend services in Python using … modern frameworks (FastAPI, Pydantic), implementing clean API design, efficient data pipelines, and integration patterns within our Azure ecosystem Establish and enforce best practices for the TypeScript/React frontend, ensuring a highly performant, accessible, and intuitive user experience, including real-time interfaces and interactive data visualisations Lead ...

will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Working in a team of Front-End engineers Writing clear & concise code Working closely with Back-End engineers Participate … architecture design code reviews API design with the Back-End engineers and other team members to establish more functional, cohesive code Create, maintain documentation while implementing the best coding practices standards Hands-on approach Participation in sprint rituals What you’ll need 6+ years experience developing large ...

suited to an experienced consultant who enjoys setting technical direction, mentoring engineers, and acting as a trusted technical partner to clients. Responsibilities Lead the design and delivery of full stack JavaScript solutions Set technical direction, standards, and best practices across projects Remain hands-on, contributing to critical areas … Required Experience Extensive commercial experience with JavaScript/TypeScript Strong front-end experience with React (or equivalent) Strong back-end experience with Node.js and API design Proven experience in a Lead/Tech Lead/Senior Consultant role Experience designing and delivering scalable systems Strong stakeholder management ...

Hybrid - 3 days in office) Sector: Technology Transformation Type: Permanent The Role We are seeking an experienced Technical Architect to lead the planning, design, and implementation of Python-based applications. You will ensure projects are completed on time and within scope while coordinating between cross-functional teams to align … technical delivery with business goals. Your Responsibilities Architectural Leadership: Lead the design of complex Python applications, focusing on scalability, performance, and maintainability. Framework Selection: Evaluate and select appropriate frameworks (Django, Flask, FastAPI) based on specific project needs. Technical Documentation: Create detailed design documents, including system diagrams, data flow ...

ambiguity and proposing simple, robust solutions Contributing to architectural documentation and decision records Tech Stack & Experience Core technologies: .NET 10/ASP.NET Core Web API Entity Framework Core with Azure SQL .NET MAUI (iOS & Android) - offline-first design Angular 21 (strict TypeScript) DevExpress DevExtreme (v25) Microsoft Azure … experience with modern Angular (v15+) Hands-on Azure architecture and deployment experience Experience implementing Infrastructure as Code Experience integrating Azure Entra ID Strong REST API design knowledge Experience implementing CI/CD pipelines Security-first mindset with strong attention to detail Ability to work independently within defined architectural ...

someone who enjoys shaping technical direction while remaining close to code. Key Responsibilities Platform Modernisation Architect and develop scalable backend services using Python Design and implement secure, well-structured RESTful APIs Lead the re-engineering of legacy functionality into modern, cloud-native services Contribute to long-term backend architecture … decisions Cloud & Infrastructure Design and build solutions within AWS environments Apply cloud best practices for scalability, resilience and security Contribute to CI/CD pipelines and deployment workflows Embed monitoring, logging and observability within cloud-hosted systems Legacy Transition Support phased migration away from the existing PHP platform Provide ...

someone who enjoys shaping technical direction while remaining close to code. Key Responsibilities Platform Modernisation Architect and develop scalable backend services using Python Design and implement secure, well-structured RESTful APIs Lead the re-engineering of legacy functionality into modern, cloud-native services Contribute to long-term backend architecture … decisions Cloud & Infrastructure Design and build solutions within AWS environments Apply cloud best practices for scalability, resilience and security Contribute to CI/CD pipelines and deployment workflows Embed monitoring, logging and observability within cloud-hosted systems Legacy Transition Support phased migration away from the existing PHP platform Provide ...

evolving technology landscape. This role is focused on the Microsoft tech stack, so we are looking for someone with good experience in C#.NET. Responsibilities Design, develop, test, and deploy backend applications using .NET and C# Translate business requirements into clean, maintainable, and scalable technical solutions Contribute to system design … contribute to improving overall code quality Diagnose and resolve bugs, performance issues, and production incidents Work with SQL databases, including query optimisation and schema design Collaborate with frontend developers and stakeholders to deliver complete features Continuously improve technical skills and contribute ideas to enhance systems and processes Requirements 3+ ...

collaboration in a fast-moving startup environment. The RoleTechnical Strategy & Leadership Work alongside the founder to define and evolve the technical roadmap Lead architectural design and critical technology decisions Champion engineering best practices, code quality, and technical excellence Mentor, coach, and grow engineers at all levels Foster a culture … ownership, collaboration, and innovation Backend Architecture & Development Architect, build, and scale backend services and RESTful APIs Design, optimise, and maintain MongoDB database solutions Improve system reliability, performance, and scalability Resolve complex production issues with robust solutions Implement microservices and modern backend patterns Collaboration & Delivery Partner with Product, Design ...

Stack Developer - Remote - Competitive Salary I'm working with an exciting organisation that is looking to appoint a Senior Full Stack Developer to help design and deliver secure, cloud-native applications within a modern Microsoft and Azure ecosystem. This is an excellent opportunity for an experienced full-stack engineer … maintaining unit and frontend tests (NUnit and ViTest) Contributing to CI/CD pipeline improvements and secure deployment practices Participating in architecture and technical design reviews Ensuring all development aligns with OWASP security best practices Tech Stack & Environment Core technologies: .NET 10/ASP.NET Core Angular 21 (mandatory) DevExpress ...

support junior and senior engineers Conduct code reviews and uphold engineering best practices Backend Engineering Build and maintain scalable backend services and RESTful APIs Design and optimise MongoDB database solutions Improve and maintain existing backend infrastructure Troubleshoot production issues and implement robust solutions Collaboration & Delivery Work closely with cross … have experience with: MongoDB (data modelling, indexing, aggregation, performance tuning) Node.js and the wider JavaScript/TypeScript ecosystem Express.js and/or Fastify RESTful API design AWS or similar cloud platforms Microservices architecture Testing frameworks (Vitest, Jest, Mocha, etc.) CI/CD pipelines & DevOps practices GitHub workflows Observability ...

manual test strategies Documenting architectural decisions (ADRs) and maintaining clear technical communication Tech Stack & Experience Core technologies: .NET 10/ASP.NET Core Web API Entity Framework Core with Azure SQL .NET MAUI (offline-first mobile design) Microsoft Azure (App Services, Azure SQL, Blob Storage, Key Vault, Application Insights … years working within fast-paced, 'fail-fast' delivery environments At least 2 years in a leadership position Strong expertise in modern .NET and API design Proven Angular experience (v15+) Hands-on Azure architecture and deployment experience Experience implementing Infrastructure as Code (Bicep preferred) Experience integrating Azure Entra ...

collaborative Agile environment. You will take ownership of complex Magento and front-end initiatives, influence technical direction, and work closely with Product, Design, and Operations to ensure our platforms remain scalable, secure, and high-performing. Location: Hybrid/Remote flexibility Hours: The role is a full-time position … Responsibilities: Lead the design, development, and maintenance of Magento 2 (PHP) features, modules, and integrations, including REST and GraphQL APIs. Drive front-end development using React (JavaScript/TypeScript), consuming Magento GraphQL endpoints to deliver high-quality customer experiences. Own technical solutions from concept through to production, ensuring quality ...

architecture discussions, code reviews, and problem-solving Requirements: 2-3 years software development experience, strong OOP (Java/C#) Proficient in JavaScript, RESTful API design, and full-stack development Salesforce experience is a bonus but not required Mentorship or industry-specific experience is a plus Why Apply ...

architecture discussions, code reviews, and problem-solving Requirements: 2-3 years software development experience, strong OOP (Java/C#) Proficient in JavaScript, RESTful API design, and full-stack development Salesforce experience is a bonus but not required Mentorship or industry-specific experience is a plus Why Apply ...

daily with PHP, Symfony, PostgreSQL, and React, and contribute to infrastructure and deployment processes alongside experienced engineers. Skills: Solid experience with backend development and API design using PHP Experience with relational databases - PostgreSQL End-to-end feature ownership across the stack Familiarity with agile development Desirable Symfony experience ...

Skills- Cloud experience -GCP Infrastructure as Code (Terraform) CI/CD tooling: Jenkins, Spinnaker, Harness API design/integration/documentation Kubernetes (GKE desirable) Software development: NodeJS, Bash, Python ...

skills & experience Strong scripting and programming (Python essential; Bash/Shell desirable) Proven experience with cloud platforms (AWS and/or Azure) Knowledge of API design and security (OAuth2, OIDC, JWT, etc.) Understanding of AI/ML concepts or a strong interest in building expertise in this area ...

comfortable working as the first and currently only tech specialist and someone with experience across: Workflow automation platforms (e.g., Make, n8n, Zapier, Workato) API design, integration, authentication Python, JavaScript or similar scripting languages AI/ML models (LLMs, embeddings, classification, summarisation) Data wrangling and ETL tools Cloud platforms … Automation. Just imagine how content you could be in a role with masses of autonomy that requires you to challenge yourself and design solutions to help businesses operate better and in turn, overcome any market challenges they may face. One for you? If so apply now, wed love ...

apps and SDKs. The Role: This is a hands‐on role where you will: · Lead the technical direction for our iOS solutions · Design and implement complex features, working with Swift, Objective-C and C++ to build reliable, high‐performance components · Stay ahead of iOS changes and lead our response … them · Collaborate with product, data, and client teams to deliver robust solutions · Mentor other engineers, run design and code reviews, and champion best practices · Leverage and be open to AI-coding tools to increase productivity, reduce boilerplate and enhance code quality Our offices are in Trafford Park, Manchester ...

calibre team of Software Developers and DevSecOps engineers working on a microservice architecture running on Kubernetes in AWS. It's built following strict functional design principles, TDD and CI/CD pipelines to automatically deploy to production. Youll combine people leadership with technical evolution of the platform through guiding …/CD practices. Are experienced with AWS and infrastructure as code (e.g., Terraform). Have knowledge of event-driven architecture and API design. Feel confident to jump into different aspects of our code base, orient yourself and remove blockers for the team Are motivated to coach and develop engineers ...