1 to 25 of 82 API Design Jobs in the UK excluding London

Role : Solution Architect Location : Edinburgh – 3 days a week Job Description: Principle Responsibilities Work as part of API Design and analysis team with responsibility for API Design, aligned to value streams. The solution architect is responsible for analysis of existing system and defining the API … contract. Prepare Design Document and presentation for the stakeholders Work with Global Enterprise/Solution Architects to review end-to-end technical design. Review/Ensure the technical design is technically coherent and future proof and compliance with technology standards and regulatory obligations Identify any issues that ...

Role: API Platform Architect Location: London (2-3days/week On-Site) Job Type: Contract We are seeking an experienced and highly technical API Platform Architect to lead the architecture, engineering, and continuous evolution of our enterprise API Platform. This role is fully hands-on, combining … deep expertise in Azure cloud services, Kubernetes, Terraform, API security, and distributed systems with the ability to guide, review, and contribute to .NET Core API development practices. The architect will define and maintain the vision and standards for the platform while actively engaging in coding, troubleshooting, design ...

Promote and practice best development approaches such as Test-Driven Development (TDD) and Behavior-Driven Development (BDD) to deliver high-quality, maintainable code. Apply design patterns to address complex problems, ensuring code is efficient, readable, and reusable. Adhere to IT and Information Security policies and procedures in all engineering … Your Profile Essential Skills/Knowledge/Experience: Preferred - Experience of building distributed scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.0, Secure API design Understanding of API design for mobile application with event driven architecture Strong analysis and problem-solving skills Knowledge ...

possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

possess a combination of some of the following skills, then LETS TALK! Experience in Java development Backend cloud-based application development Understanding of API design for mobile applications with event-driven architecture Strong analysis and problem-solving skills Preferred - Experience of building distributed scalable microservices using Java/… Kotlin, Spring Boot, OAuth 2.0, Secure API design A working understanding of technologies/areas: AWS, API Design, Automation testing In return, you will be rewarded with a highly competitive benefits package including a bonus and ongoing career development and training. What you need ...

countries. Founded in 1976, HCL is one of India's original IT garage start-ups. For more on HCL, please visit Job Title: API Architect Location: Edinburgh, UK Experience Level: 15+ years Mode of Hiring- Permanent Position 2 days hybrid is mandatory and 3 days remote. Job Description- Looking … maintain the Application Programming Interfaces for specific business functional/technical areas and provide high-level roadmaps for the implementation of the robust API solutions, aligning to a common technical direction ensuring accomplishment of the roadmaps. Key Responsibilities Design and define API architecture and standards. Collaborate with ...

cloud-native platforms supporting mobile applications in a regulated environment. This is a hands-on backend role focused on Java/Kotlin microservices, secure API design, and cloud delivery. You will contribute across the full SDLC while influencing engineering standards, best practices, and technical quality. Key Responsibilities Design … continuous improvement initiatives Required Skills & Experience Strong backend development experience with Java and/or Kotlin Spring Boot, REST APIs, microservices architecture Secure API design, OAuth, authentication/authorisation AWS or cloud platform experience Event-driven systems and distributed architectures Experience working in financial services or regulated environments ...

Backend Engineer – C# .NET | REST APIs | Azure | OAuth | AI Integrations Birmingham (Hybrid) – UK SaaS Scale-Up – Greenfield API & AI Platform One of the UK's fastest-growing SaaS scale-ups is investing heavily in a brand-new API and AI integration platform, and they're looking … Backend Engineer to design and deliver the services that power next-generation AI features, customer products, and third-party integrations. You'll work with a modern engineering team building RESTful APIs, cloud-native services, and event-driven components in a highly collaborative, product-focused environment. What ...

Senior API Technical Consultant (GraphQL Specialist) Design and build next generation of high-scale SaaS platforms. We're looking for a senior/lead engineering consultant with deep expertise in GraphQL to take a leading role in developing our robust TypeScript/Node.js backend. You will be instrumental … evolution of our APIs, ensuring our services are resilient, scalable and secure within a cutting-edge, cloud-native environment (Helm, Kubernetes). The Deliverables Design and build sophisticated, scalable GraphQL APIs and backend services using TypeScript and Node.js. Lead the design and evolution of our API schemas ...

Embedding model optimisation and semantic search Context window management and chunking strategies MCP & Tool Integration Model Context Protocol (MCP) implementation LLM tool calling and API design AWS Lambda integration with agents AI Safety & Evaluation Guardrail implementation (hallucination detection, toxicity filtering) Response evaluation frameworks and A/B testing … Advanced Python AWS SDK (boto3) Infrastructure as Code awareness (CloudFormation/Terraform) Git and CI/CD for ML systems UX Engineer - Skills & Requirements Design & Prototyping Advanced Figma skills Wireframing, interactive prototyping, and design systems Responsive web and mobile design Conversational UX Chatbot and conversational interface design ...

interfaces, and define non-functional requirements. Ensure solutions are fit for purpose by collaborating with stakeholders and vendors, while assessing the impact of strategic design decisions. Work closely with both business and technology teams to shape the solution intent and architectural vision. Rapidly develop high-level architecture, refining details … prioritise technology-focused backlog items for the architecture runway. Provide clarity to development teams on architectural aspects, offering solution options to overcome impediments. Conduct design reviews to confirm all non-functional requirements are met (e.g., security, performance, scalability, usability, reliability). Operate as an individual contributor. Required Skills ...

interfaces, and define non-functional requirements. Ensure solutions are fit for purpose by collaborating with stakeholders and vendors, while assessing the impact of strategic design decisions. Work closely with both business and technology teams to shape the solution intent and architectural vision. Rapidly develop high-level architecture, refining details … prioritise technology-focused backlog items for the architecture runway. Provide clarity to development teams on architectural aspects, offering solution options to overcome impediments. Conduct design reviews to confirm all non-functional requirements are met (e.g., security, performance, scalability, usability, reliability). Operate as an individual contributor. Required Skills ...

Senior Backend Software Engineer (API, Cloud, Integration Focused) Location: Manchester/Hybrid (2 times a week in the office) Salary: Up to £75,000 (DOE) Sector: Tech For Good About the Opportunity How would you like to work on products designed to improve people's lives? This … Manchester as they embark on an ambitious roadmap of new products and services. They are looking for an experienced Backend Engineer with strong API development skills to help drive the next phase of their platform evolution. This role sits at the heart of their distributed architecture and plays ...

platforms * Overhaul monolithic systems into scalable APIs, microservices and event-driven architectures (Azure, AWS) * Work closely with UI and backend architects to align system design, scalability and performance * Introduce and promote AI-enabled engineering practices such as Copilot and GPT-based tooling for efficiency and quality improvements Technical Leadership … evolution, including cloud migration, containerisation (Kubernetes) and automation initiatives * Diagnose and resolve complex performance issues across large-scale systems * Champion software craftsmanship, TDD, BDD, design patterns and scalable coding practices Team Management & Engineering Culture * Manage and mentor cross-functional engineering teams, supporting growth, performance and delivery excellence * Build engineering ...

thrives on solving complex challenges, driving innovation, and actively contributing to the development of scalable, high-performance enterprise applications. You'll lead architectural design while remaining deeply involved in implementation, reporting to the Head of Financial Messaging Engineering, working side-by-side with engineering teams to build robust solutions … Java 21+, Spring Boot, and Node.js. Expertise in backend technologies: Hibernate, Oracle DB/PostgreSQL, Kafka, Redis, Elastic Search/Apache Solr Proficiency in API design and development using REST and GraphQL. Solid understanding of secure coding practices Desired experience with DevOps tools and practices : CI/ ...

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 … 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 ...

Hybrid Employer: Global Technology Consultancy Mandatory Skill: Google Kubernetes Engine (GKE) Role Purpose We are seeking a hands-on Cloud Platform Engineering Lead to design, build and operate secure, automated cloud platform capabilities. You will enable product teams to deliver API-first services rapidly and reliably, while balancing … deep technical work with coaching and engineering leadership. Key Responsibilities Design, build, and operate platform capabilities using Infrastructure-as-Code and modern CI/CD . Embed secure-by-design principles from architecture to runtime. Define and manage SLOs/SLIs ; drive observability, performance tuning, and automation. Promote ...

thrive in a collaborative, agile environment and want to make a real impact, we want to hear from you. What You’ll Do Design, develop, and maintain robust software applications using C# .NET. Write clean, scalable, and maintainable code that meets business and technical requirements. Collaborate closely with engineers … continuous improvement initiatives. Ensure solutions are reliable, secure, and effective, supporting the platform’s growth and performance. Help drive best practices in system design, test automation, CI/CD, and performance monitoring. What We’re Looking For Strong experience in C# .NET (Framework & Core), with a focus on high ...

thrive in a collaborative, agile environment and want to make a real impact, we want to hear from you. What You'll Do Design, develop, and maintain robust software applications using C# .NET. Write clean, scalable, and maintainable code that meets business and technical requirements. Collaborate closely with engineers … continuous improvement initiatives. Ensure solutions are reliable, secure, and effective, supporting the platform's growth and performance. Help drive best practices in system design, test automation, CI/CD, and performance monitoring. What We're Looking For Strong experience in C# .NET (Framework & Core), with a focus on high ...

week Job Overview: Data Architect plays a key role in CLS's architecture/technology division. Role requires broad knowledge in data architecture and design, with a focus on OLTP, Data Warehouse, Data Reporting, API capability and other database interfaces. This role involves collaborating with cross-functional teams … understand business requirements, providing technical leadership, and ensuring the design meet CLS architectural principles and security standards. Person should be strong technologist very aware of current developments in technology spectrum. Key Responsibilities: Author High Level Solution Design, Solutions Overview and Conceptual Architectures. Design and architect solutions based ...

services and customer facing teams Highly advantageous experience includes: regulated environments, multi cloud operations, AI or ML integration, multi region deployments, education sector systems, API first platforms, legacy to modern engineering uplift Responsibilities for Head of Engineering: Lead and develop engineering managers and technical leads, embedding a culture … ensure delivery aligns with strategic priorities Collaborate with sales, customer experience, professional services and implementation teams to support customer transitions Embed security by design in collaboration with information security and compliance teams Provide architectural direction for SaaS migration, cloud native evolution, microservices, API design and AI engineering ...

cross-functional teams of engineers, product managers, and designers. Build scalable, performant, and resilient backend systems that support critical business needs. Participate in system design and architecture reviews to influence technical direction. Drive software quality through code reviews, testing, and continuous integration. Contribute to a positive and inclusive engineering … culture through mentorship, knowledge sharing, and leadership at your level. Investigate and resolve complex technical issues in production environments. Author and review technical design documents, RFCs, and root cause analyses. Continuously learn and grow in your engineering craft and domain knowledge. Participate in an on-call rotation to ensure ...

layers, contributing to mission-critical digital services used across the UK and internationally. What You'll Do As a Full Stack Developer, you'll design and develop robust APIs and backend services using Node.js, while also contributing to frontend interfaces that deliver seamless user experiences. You'll work within … deliver resilient, maintainable solutions. Responsibilities Develop and maintain backend services and APIs using Node.js Build responsive, accessible frontend components using modern JavaScript frameworks Design event-driven systems using Kafka and SQS Implement infrastructure automation with Terraform Deploy and manage services in AWS (ECS, Cognito, SQS) Containerise applications using Docker ...

/API/Ecommerce/Product design/PDP/Tourism Role: Product Manager Compnay: Ecommerce Location: East London Onsite: Hybrid 2/3 day per week onsite Salary: up to £90,000 + Bonus We're looking for an experienced Product Manager to own and evolve core … shape platform-adjacent products including APIs, pricing models, and rules-based systems Develop product plan to boost CRO. Partner closely with engineers on API contracts, integrations, and architectural trade-offs Translate complex workflows and data flows into clear, scalable product structures Lead cross-functional discussions, aligning technical decisions with ...