1 to 25 of 80 API Design Jobs in the UK excluding London

APIs — Develop and extend ASP.NET Core Web APIs and Razor Pages applications (user management, admin tools, financial data services) using C# and Dapper ORM. Design and optimize SQL Server databases — Write and maintain stored procedures, manage database schema changes using SQL Server Database Projects (dacpac/sqlpackage), and optimize … queries across large financial datasets. Maintain Python data pipelines and APIs — Support and extend Python-based Flask API endpoints and data processing pipelines using pandas, ensuring data flows reliably from external sources into the platform. Work with Azure cloud services — Deploy and manage applications on Azure App Service, Azure ...

This is a hands-on software engineering role, ideal for someone who thrives on solving complex problems in a collaborative, agile environment. You will: Design, develop and test Azure cloud native software using C# and .Net technologies, in line with an agreed schedule Ensure code is testable, safe, functional … secure, performant and reliable, all proven through testing Apply software development, microservices and API design best practices, and participate in code reviews Produce relevant and high standard documentation, developer-level tests, and deployment procedures Give accurate task estimates, and provide progress status to management Collaborate with cross-functional ...

both web and mobile applications with offline-first functionality. Key responsibilities include: Maintaining platform stability and performance as usage scales Leading backend architecture and API design decisions Supporting scalability as new customers are onboarded Collaborating with product and business stakeholders to guide technical direction Balancing feature delivery with … Looking For Strong backend engineering experience is essential, ideally within modern PHP environments and production SaaS platforms operating at scale. Experience with: REST API design and architecture SQL schema design and optimisation Modern backend frameworks (Symfony preferred) Collaborative engineering environments and Git-based workflows Exposure to frontend ...

shaping Meteor's digital future. Key Responsibilities Lead, mentor, and inspire a team of developers, fostering a culture of technical excellence and continuous improvement Design, develop, and maintain high-quality software solutions across the full stack Architect and implement systems using .NET, JavaScript, SQL, and modern frontend frameworks Oversee … API design and integrations, ensuring secure and efficient data exchange Translate business and stakeholder requirements into clear technical solutions Conduct code reviews and ensure adherence to coding, security, and quality standards Drive continuous improvement in development workflows, testing, and deployment practices Support the professional development of team members ...

consulting, technology services, and digital transformation, committed to delivering positive change through technology and human collaboration. They are seeking an experienced SC Cleared AWS API Engineer/Architect to design secure, scalable, and well-integrated API and microservices architectures across multiple client applications and services. Key responsibilities … within this role are broadly expected to include: the design of serverless and microservices-based API architectures on AWS. Defining and applying RESTful API design patterns and integration standards. Support system and data integration across distributed services. Assessing and addressing technical debt, recommending pragmatic modernisation approaches. ...

engineering discipline, independent problem-solving ability, and a commitment to building robust, scalable systems. You will work across modern cloud-native architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. Key Responsibilities Design, develop, and maintain high-quality Java applications using … Spring Boot. Build and optimise RESTful APIs and contribute to GraphQL service development. Develop cloud-native solutions using AWS services such as Lambda, API Gateway, DynamoDB, ECS, S3, and others. Contribute to microservices architecture, event-driven systems, and distributed design patterns. Implement CI/CD pipelines using tools ...

venture backed by the strength and stability of an established business. Key Responsibilities End-to-end development of high-quality, scalable SaaS platforms from design through deployment and maintenance. Architect and implement robust backend services primarily using Python and PostgreSQL. Develop and maintain responsive, performant front-end applications with … Provide technical mentorship and leadership to development teams, fostering best practices in coding, testing, and deployment. Participate in code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast ...

SaaS product at scale. This is an office-based role and candidates must be located in or within commutable distance of Bristol. Responsibilities: Design and build microservices behind API Gateway (REST/HTTP), running on Lambda and containerised workloads on EC2/Fargate Model multi-tenant data across … DynamoDB and RDS (PostgreSQL), using S3 for object storage and KMS for secrets and encryption Build and maintain an integrations layer including OAuth/API-key onboarding, webhook ingestion with idempotency, retries and DLQs, rate-limit mediation, circuit breakers and versioned connector contracts Integrate with third-party platforms ...

. You will be responsible for:- Providing expert level technical direction for complex MarTech projects involving AEM, AEP, Adobe Target, and related integrations. Leading design, development, and implementation efforts across multiple platforms. Leading services and direction, providing technical expertise and completing complex development, design, implementation, architecture design … following skills, then LETS TALK! Full stack development background with Java, JavaScript, HTML, CSS, SQL and modern frameworks Familiarity with microservice architecture, API design, and integration patterns Knowledge of AWS services and cloud-based deployment models Strong understanding of CI/CD pipelines (GitHub), OOP/SOLID, Agile ...

. You will be responsible for:- Providing expert level technical direction for complex MarTech projects involving AEM, AEP, Adobe Target, and related integrations. Leading design, development, and implementation efforts across multiple platforms. Leading services and direction, providing technical expertise and completing complex development, design, implementation, architecture design … following skills, then LETS TALK! Full stack development background with Java, JavaScript, HTML, CSS, SQL and modern frameworks Familiarity with microservice architecture, API design, and integration patterns Knowledge of AWS services and cloud-based deployment models Strong understanding of CI/CD pipelines (GitHub), OOP/SOLID, Agile ...

applications. In this role you will Provide expert level technical direction for complex MarTech projects involving AEM, AEP, Adobe Target, and related integrations. Lead design, development, and implementation efforts across multiple platforms. Lead services and direction, provides technical expertise and completes complex development, design, implementation, architecture design … training and experience although a graduate degree is preferred Experience with Java, JavaScript, HTML, CSS, SQL and modern frameworks Familiarity with microservice architecture, API design, and integration patterns Knowledge of AWS services and cloud-based deployment models Strong understanding of CI/CD pipelines (GitHub), OOP/SOLID ...

APIs that connect suppliers to our platform, and support booking and redemption journeys end-to-end. You’ll work closely with engineering to design API-driven integrations, improve data flows, and reduce manual operational processes through better platform design. What you’ll work on Supplier API integrations … Data structure and reporting (Power BI) What you’ll do Own and deliver the platform and integrations roadmap Partner with engineering on API design and system architecture decisions Data consolidation across both brands Reduce manual processes through automation and better tooling Build scalable supplier onboarding and integration capabilities ...

technologies, wed love to hear from you! Role Overview As a Cloud Systems Engineer, you will play a critical role in supporting the specification, design, integration, and test of cloud-based software and interfaces that enable seamless operations and communications for our Optical Ground Stations. This role involves working … systems engineering, and operational workflows. Key Responsibilities Define and document system-level requirements for cloud-based software supporting the operation of Optical Ground Stations. Design scalable, secure, and reliable system architectures and manage APIs, ensuring scalability, security, and operational reliability. Serve as the primary technical point of contact ...

with CI/CD , microservices , and event-driven architectures is essential, and knowledge of Python (pyspark) for data-driven workflows is advantageous Key Responsibilities Design, develop, and maintain full stack applications using React JS , C#.NET Core , and supporting technologies. Build high-performance backend services, RESTful APIs, and microservices with … calculations, and enterprise-grade BI solutions. Strong understanding of data modeling, performance tuning, and governance in Power BI. Architecture: Strong knowledge of microservices , API design , event-driven architectures , and distributed systems. DevOps/CI/CD: Experience with Azure DevOps, Gitlab, GitHub Actions, or similar. Strong understanding ...

Strong experience across the following is highly desirable: Modern C#/.NET engineering Cloud-native application development React or modern frontend frameworks Distributed systems & API design CI/CD and engineering automation Performance optimisation & scalability Mentoring and technical leadership Collaborative product engineering environments Most importantly, they want engineers ...

Stack Engineer to help us scale data and analytics capabilities across the UK and international markets. In this role, you will contribute to the design, development and maintenance of the data pipelines, platforms and services that power my clients hi tech analytics. Working closely with experienced engineers, analysts … defence. You will also be encouraged to leverage modern AI tools to accelerate high quality, sustainable development. As a Full Stack Engineer, you will: • Design, develop, automatically test and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. • Build scalable RESTful APIs ...

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 … 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 ...

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 ...

Engineer to help us scale our data and analytics capabilities across the UK and international markets. In this role, you will contribute to the design, development and maintenance of the data pipelines, platforms and services that power Cervus’ analytics. Working closely with experienced engineers, analysts, and delivery teams … defence. You will also be encouraged to leverage modern AI tools to accelerate high quality, sustainable development. As a Full Stack Engineer, you will: • Design, develop, automatically test and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. • Build scalable RESTful APIs ...

align with our business objectives. This role requires a strategic thinker with a deep understanding of software development processes and architecture best practices. Responsibilities: Design and develop application architecture frameworks that support business goals and enhance system performance. Collaborate with cross functional teams to gather requirements and translate them … into technical specifications. Evaluate and recommend tools, technologies, and processes to ensure the highest quality product platform. Lead architectural discussions and design reviews, ensuring alignment with enterprise architecture standards. Provide technical leadership and mentorship to development teams, fostering a culture of innovation and continuous improvement. Conduct performance tuning, optimization ...

occasional out-of-hours support. Ensure unit tests are implemented and fit for purpose. Research and evaluate new technologies that could benefit the organisation. Design and develop high-quality Python software that meets complex business needs. Ensure code, documentation, and testing align with engineering standards. Deliver solutions that meet … expectations, and operational reliability. Integrate products with monitoring and support tooling. Experience/Skills required: Experienced Senior Engineer who can make sound trade-offs, design for scale, and contribute to complex systems without over-engineering. Strong engineering judgement and real-world delivery experience. Senior-level experience designing and building ...

primarily backend-focused, leveraging Java and microservices architecture, with some awareness of frontend templating to support full-stack delivery. Key Responsibilities Lead the design and development of scalable backend services Act as a technical authority within the squad, guiding design decisions Contribute hands-on to development while mentoring … closely with: Product managers/QA engineers/Analysts Ensure alignment with shared engineering standards and practices Strong experience with: Microservices and distributed systems design Support delivery in fluid and evolving requirement environments Drive continuous improvement in: Code quality/Development practices/Team collaboration Essential Skills Backend Development ...

maintaining services-while being fully supported by a broad engineering community dedicated to continuous learning and innovation. Key Responsibilities of the Cloud Engineer Design, build, deploy and maintain applications and services on AWS Contribute to technical decision-making and cloud architecture discussions Develop solutions using AWS best practice, cloud … eagerness to learn Experience working in Agile environments Desirable Skills of the Cloud Engineer AWS Associate certification (Solutions Architect, Developer, or DevOps) Microservices and API design experience Containerisation and orchestration (Docker, Kubernetes, ECS, EKS) Knowledge of AWS monitoring, observability, and FinOps principles CI/CD tooling experience (Jenkins ...

maintaining services-while being fully supported by a broad engineering community dedicated to continuous learning and innovation. Key Responsibilities of the Cloud Engineer Design, build, deploy and maintain applications and services on AWS Contribute to technical decision-making and cloud architecture discussions Develop solutions using AWS best practice, cloud … eagerness to learn Experience working in Agile environments Desirable Skills of the Cloud Engineer AWS Associate certification (Solutions Architect, Developer, or DevOps) Microservices and API design experience Containerisation and orchestration (Docker, Kubernetes, ECS, EKS) Knowledge of AWS monitoring, observability, and FinOps principles CI/CD tooling experience (Jenkins ...

token management Virtualisation & Containerisation Docker, Podman Kubernetes GPU containerisation (e.g. NVIDIA Container Toolkit, Run:AI) Architectural Approaches Microservices and serverless architectures Edge computing API design (REST, gRPC/Protobuf) Event-driven systems (Kafka, MQTT) DevSecOps Tooling Version control (Git) CI/CD pipelines (e.g. GitLab CI/ ...