51 to 75 of 96 API Design Jobs in England

+ mobile applications Building and maintaining high‐performance APIs and distributed microservices Solving problems around scalability, reliability, security, and automation Working with modern API protocols including GraphQL and gRPC Enhancing the platform that connects both traditional and on‐chain financial services Must‐have experience: Strong backend engineering background with …/or Golang Solid understanding of microservices, event‐driven systems & distributed architecture Strong knowledge of PostgreSQL and/or Redis Understanding of web semantics, API design & backend web standards Proficiency with Git and version control workflows Experience with CI/CD, build automation and modern engineering pipelines Excellent ...

Type: Full-time Salary: Up to £51,000 Join our clients innovative Research & Development team as a Full-Stack Developer, where you will design, build, and maintain applications using Angular on the frontend and .NET (C#) on the backend. This role involves close collaboration with the Product and Testing … C#), asynchronous programming, and dependency injection. Quality-focused with experience in unit testing (Jest/NUnit or similar) and code review. Knowledge of RESTful API design, OpenAPI/Swagger, and NoSQL databases. Excellent collaboration skills, with experience working closely with product teams, platform teams, developers, and testers. Strong ...

architecture Extensive experience with PostgreSQL, including performance tuning and complex queries. Experience with background job processing using Sidekiq and Redis. Solid understanding of RESTful API design, JSON serialization, and authentication (e.g., JWT, SSO). Hands-on experience with AWS services and containerised deployments (Docker). Experience troubleshooting ...

impact The skills and experience my client are looking for: 5+ years of experience in software engineering, with expertise in Node.js and REST API design. Strong knowledge of AWS and serverless architecture. Strong experience with TypeScript, ensuring clean, efficient, and maintainable code. Experience with CI/CD pipelines using ...

impact The skills and experience my client are looking for: 5+ years of experience in software engineering, with expertise in Node.js and REST API design. Strong knowledge of AWS and serverless architecture. Strong experience with TypeScript, ensuring clean, efficient, and maintainable code. Experience with CI/CD pipelines using ...

owning the cloud-native platform that underpins conversational AI and generative AI products at scale. Sitting at the core of AI delivery, you will design, build, and operate the runtime, infrastructure, and operational layers supporting RAG pipelines, LLM orchestration, vector search, and evaluation workflows across AWS and Databricks. Working … platform powering conversational assistants and generative AI products. Build, operate, and optimise RAG and LLM-backed services, improving latency, reliability, and cost. Design and run cloud-native AI services across AWS and Databricks, including ingestion and embedding pipelines. Scale and operate vector search infrastructure (Weaviate, OpenSearch, Algolia, AWS Bedrock ...

systems are scalable, reusable and clearly owned. You'll establish modern engineering standards across the full SDLC, including CI/CD, automated testing, observability, API design, security and operational readiness, enabling teams to deliver quickly and safely. You'll lead architecture and design reviews, make pragmatic technical … With end-to-end accountability for engineering domains, you'll define service expectations, KPIs and reliability targets while ensuring operational excellence. Collaborating with Product, Design, Data, AI and Operations, you'll translate business priorities into clear engineering roadmaps and guide stakeholders on feasibility and trade-offs, owning delivery outcomes ...

full-stack product delivery, from infrastructure and AI integrations through to React/React Native interfaces, collaborating closely with founders, creators, product, and design to turn lean specs into scalable, user-loved software. We’re looking for a strong generalist with backend depth and real mobile experience. Responsibilities Implement … mobile + web frontend → APIs → data models → integrations) while maintaining quality and velocity. Build React Native mobile apps and shared component systems across products. Design and ship scalable backend services (APIs, integrations, AI workflows). Run tight build → test → iterate → ship loops; provide realistic estimates and surface blockers early. ...

senior individual-contributor role within a high-performing engineering team, building asynchronous, message-driven systems designed for scale, resilience, and near-zero downtime. Design and implement high-throughput, low-latency systems processing millions of real-time payment events Build event-driven architectures using modern Java and reactive frameworks Work … extensively with non-blocking I/O, asynchronous flows, back-pressure, and concurrency Contribute to system and API design, focusing on scalability, fault tolerance, and observability Collaborate closely with architects, engineers, and client teams across Europe Operate in Agile environments (Scrum/Kanban) with a strong engineering culture ...

develop a LAMP-based full-stack platform Audit, refactor, and improve legacy code without full rewrites Introduce modern front-end frameworks (React, Vue, Angular) Design and maintain APIs (REST/GraphQL) Improve performance, security, and scalability Contribute to DevOps, CI/CD, and cloud infrastructure Mentor junior developers … best practices What Theyre Looking For Senior full-stack experience in a LAMP environment Strong PHP and MySQL skills Experience with modern JavaScript frameworks API design experience Comfortable in a hands-on, pragmatic, small-team environment Strong communication and problem-solving skills Package & Benefits ...

working - 3 days per week onsite Salary up to £70,000 - 75,000 A leading Birmingham-based client is seeking an AI Engineer to design, build, and deploy AI applications using Python frameworks and LLM APIs. The position focuses on developing scalable, secure AI services in Azure's public … cloud and involves hands-on work throughout the development lifecycle, including API design, data access, AI integration, and cloud deployment. Key skills and responsibilities, Design, develop, and maintain AI-driven applications and services utilizing Python. Build and manage RESTful APIs with FastAPI. Integrate and oversee Large Language ...

backend and a React/Redux front end, working with complex datasets, real-time dashboards, and advanced visualisations. You'll be involved in API design, PostgreSQL performance optimisation, frontend state management, CI/CD pipelines, and cloud infrastructure, while collaborating closely with Product, Data, and commercial stakeholders. ...

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 ...

Experience - Java/Kotlin with Spring and Spring Boot - Google Cloud Platform (Cloud Run, Pub/Sub, Secret Manager) - Observability tools (Grafana, Splunk) - REST API design - TDD, pair programming, mobbing - Strong communication and mentoring - Git Preferred Experience - DevOps/CI/CD - Load & performance testing - Mobile integration experience ...

development experience. Proven success in high-performing engineering teams in fast-paced environments. Deep expertise in development with: Python (Django, Flask, or FastAPI) PostgreSQL (design, optimisation, maintenance) Containerisation (Docker/Kubernetes) Event-driven architecture (Kafka/RabbitMQ) Nice to have experience with: TypeScript/JavaScript (NextJS, NodeJS, Tailwind) Terraform … DevOps Experience building and scaling SaaS platforms in production. Strong background in software architecture, microservices, and API design. Hands-on experience with AWS platform. Track record of delivering high-quality software under tight timelines. Strong communication skills, able to motivate and align technical teams. Experience with AI tools, APIs ...

collaborative yet autonomous environment. Your new role We are seeking a Full-Stack Web Developer with strong backend expertise to support the design, development, and delivery of data-driven web applications. This role combines modern web engineering with analytical and automation workflows, working closely with technical and non-technical … outcomes are aligned with project goals. This role includes travel to Wroxham once per week as part of project and client work. Key Responsibilities: Design, develop, and maintain full-stack web applications using Python and Django Build, consume, document, and maintain REST APIs to support internal platforms and analytical ...

maintainable code. This is an exciting opportunity to join collaborative and innovative startup with opportunities for professional growth and learning. What You’ll Do Design and develop high-throughput, low-latency APIs using Typescript/Node.js. Build and maintain real-time data ingestion and processing pipelines. Optimise backend services … delivery. Collaborate with front-end teams to power trading consoles and dashboards. Profile and tune Node.js applications for performance and memory efficiency. Ensure secure API design and compliance with data privacy regulations. Contribute to architecture discussions, code reviews, and documentation. Key requirements Strong experience with Node.js in production ...

leading best practices across the full Software Development Life Cycle (SDLC). Key Requirements: Proven experience building distributed, scalable microservices and applying secure API design principles. Strong hands-on experience with Java and/or Kotlin, Spring Boot, OAuth 2.0, and secure APIs. Experience working in cloud-based … Driven Development (TDD) and Behaviour-Driven Development (BDD). Experience participating in all phases of the Software Development Life Cycle (SDLC), including requirements gathering, design, development, deployment, and maintenance. This is an exciting opportunity to join a leading investment manager and play a key role in driving backend development ...

Your new company Tier 1 Financial Services Client Your new role This role is for someone who can design and guide thebuilding of complex payment systems, making sure they follow regulations, use modern tech, and meet business needs. It requires deep banking knowledge, strong technical architecture skills, and excellent … PSD3, Open Banking, SEPA rulebooks, UK Payment Regulator mandates, ECB/TARGET services updates, ISO 20022 migration, and AML/CTF regulations. Proficiency in API Design, microservices, and integration platforms. Modernprogramming languages (Java, .NET, Python, JavaScript frameworks) What you'll get in return An exciting opportunity to join ...

edge AI functionality across a flagship cybersecurity platform, building scalable, performant systems that harness the power of data, ML models, and infrastructure. Key Responsibilities: Design, develop, and deploy production-grade ML/AI features — from data prep and model training to inference APIs and monitoring. Integrate and scale LLMs … PyTorch and scikit-learn . Hands-on experience with state-of-the-art foundation models, embeddings, and RAG. Strong knowledge of cloud computing, microservices, API design, and event-driven architectures. Experience with Jupyter notebooks for data exploration and model iteration. About You: You are driven, empathetic, and thrive ...

architecture and deployments Exposure to cutting-edge AI and real-time data systems Fast-paced, collaborative engineering environment THE BACKEND ENGINEER ROLE: You'll design, build, and maintain high-performance APIs using Python and FastAPI, working with large volumes of live sports data. The systems are real-time … subject to required skills) your application to our client in conjunction with this vacancy only. KEY SKILLS Python, FastAPI, PostgreSQL, AWS, Docker, Backend Development, API Design, Real-Time Systems, Software Engineering, Sports Data ...

Tooling Expertise: Use Prometheus, Grafana, and Dynatrace for data collection, visualisation, and deep-dive analysis. •Proficiency in Prometheus, Grafana, and Dynatrace. •Strong knowledge of API design, data modelling, and pipelines. •Experience with automation, monitoring platforms, and scripting languages (e.g., Python, PowerShell, Bash, Terraform and Ansible) to enhance operational ...

architectural direction, influencing engineering standards, and shaping the evolution of AI-enabled capabilities across the mobile platform. In this role, you will: Lead the design, development, and maintenance of advanced iOS applications, ensuring high performance, quality, and responsiveness across Expedia Group’s product suite. Architect and implement robust, scalable … system and API designs, including effective data modelling to support complex business requirements. Drive cross-functional collaboration to define, develop, and ship impactful features, ensuring alignment with organisational goals and technical strategy. Champion best practices in software engineering, testability, and maintainability through code reviews and mentoring. Safely integrate ...