101 to 125 of 198 API Design Jobs in the UK

looking for: • Hands-on experience running real production workloads on AWS — not just deploying to it • Strong Postgres/SQL skills: schema design, query tuning, migrations • Solid API design chops: clear contracts, versioning, backwards compatibility • Python-first mindset (FastAPI or similar) • Redis experience: caching patterns, invalidation ...

Responsibilities Contribute across the full SDLC, partnering with Engineering, DevOps, and Product Turn business requirements into robust, secure technical solutions Design and build scalable, high-performing applications and services Write high-quality, maintainable code with strong testing and automation Lead investigations into complex technical issues and ensure system stability … Champion engineering best practices and continuous improvement Shape system and API design using modern architectural principles Communicate clearly with cross-functional teams Mentor junior engineers and support knowledge-sharing Contribute to technical discovery (spikes) and document findings Support CI/CD, IaC, and cloud environments (GitHub Actions, Terraform ...

practices and standards, and delivering high-impact software that scales. Job responsibilities Architects and implements complex, scalable engineering frameworks and solutions using modern software design principles Develops secure, high-quality production code for data-intensive applications and platforms, and reviews and mentors other engineers Creates durable, reusable software frameworks … development and automation capabilities, to improve the value realized by automation at scale. Required qualifications, capabilities, and skills Hands-on practical experience delivering system design, application development, testing, and operational stability at enterprise scale Hands-on experience designing and deploying production AI/ML systems, including LLM-based applications ...

that sit between our LLM providers and our customer-facing products, focusing on reliability, latency, and cost efficiency at scale. What You'll Do: Design and maintain APIs serving LLM-powered features (chat, search, agentic workflows) to 500k+ monthly active users Build and optimise RAG pipelines, including chunking strategies … performance for both relational (Postgres) and vector (pgvector/Pinecone) workloads Collaborate with ML engineers on model-serving infrastructure and prompt-caching strategies Drive API versioning and backwards compatibility as the product iterates quickly Core Tech Stack: Languages: Python (FastAPI), Go, TypeScript (Node.js) Databases: PostgreSQL, Redis, Pinecone/pgvector ...

make a difference You'll take technical ownership of customer-facing solutions, working across React/TypeScript and .NET/C# to design, build, test and run reliable, secure and scalable services. You'll lead complex technical delivery, champion modern engineering practices and help shape high-quality solutions through … testing. CI/CD craftsmanship (Azure DevOps/GitHub Actions or similar) with quality gates and environment parity. Proven record designing scalable, resilient systems; API design/versioning; clean architecture and DDD experience. Track record mentoring engineers and leading code/design reviews; uplifting test automation ...

high-quality software and continuously improving engineering practices Technical Skills Expertise In ✅ C# and .NET (ideally .NET 8) ✅ SQL Server and Entity Framework ✅ RESTful API design and development ✅ CI/CD pipelines and deployment automation (GitHub Actions preferred) ✅ Unit testing and modern testing methodologies ✅ Cloud computing concepts ...

Risk, and Settlements. Responsibilities Define and own the architecture for applications and services across the end‐to‐end commodities trade lifecycle. Lead the design of integrations between ETRM platforms and surrounding systems, establishing scalable patterns and standards utilizing technologies such as Java, messaging frameworks, and enterprise data platforms. Architect … monitoring, alerting, automated controls, reconciliation frameworks, and reprocessing capabilities. Govern architecture decisions with a focus on performance, scalability, maintainability, security, and cost efficiency. Lead design reviews and provide technical direction to engineering teams, promoting strong engineering standards, reusable patterns, and consistent integration approaches. Drive adoption of modern SDLC ...

Chicago). The role offers the opportunity to contribute to business-critical systems while working in a collaborative and supportive environment. Key Responsibilities Design, develop, enhance, and maintain enterprise applications using C# and .NET technologies. Support and improve existing business-critical systems, ensuring stability, performance, and scalability. Work closely … with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute to technical discussions, solution design, code reviews ...

Chicago). The role offers the opportunity to contribute to business-critical systems while working in a collaborative and supportive environment. Key Responsibilities Design, develop, enhance, and maintain enterprise applications using C# and .NET technologies. Support and improve existing business-critical systems, ensuring stability, performance, and scalability. Work closely … with business users, analysts, and technical teams to gather requirements and deliver solutions. Participate in the full software development lifecycle, including design, development, testing, deployment, and support. Collaborate with globally distributed development teams across multiple locations and time zones. Contribute to technical discussions, solution design, code reviews ...

Fabric Purview APIs Streams Data governance and data literacy. KPI and semantic model design. AI and innovation in analytics. Software Engineering: Strong knowledge of: Design, Build, Test, Release, Deploy using Azure Fabric, data engineering tools. Secure coding practices. API design and integration patterns. Integrations using APIs ...

work from home 1 day a week if desired. The salary on offer is £50,000-£62,000 DOE plus good benefits. Key Responsibilities Design, develop, and maintain scalable web applications using modern frameworks and technologies. Integrate Twilio APIs for voice, messaging, and video communication features. Collaborate with product … Twilio APIs (voice, SMS, video) and related integrations. Proven ability to build and work with real-time, event-driven systems. Solid grasp of RESTful API design and microservice architecture. Hands-on experience with AWS serverless technologies including DynamoDB, Lambda, and API Gateway. Familiarity with CI/ ...

Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE. Experience with RAG pipelines and vector databases Knowledge of MLOps tooling ...

Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE.... • Experience with RAG pipelines and vector databases • Knowledge of MLOps tooling ...

ability to operate across teams. You'll help shape the technical direction of Masabi's platform while staying close enough to the detail to design, review and deliver meaningful technical work. Working across the engineering organisation, you'll act as a senior technical leader: defining and evolving architecture, guiding … hybrid model, with occasional travel to the office. Responsibilities_ Shape Masabi's platform architecture, including platform blueprint definition, standards and best practices Design and deliver scalable, robust, cost efficient services aligned with platform blueprint Stay hands-on in code and technical delivery, including reviews and targeted contributions Identify ...

pipelines using Python and common ML and DL libraries ( e.g. Pytorch, Tensorflow ) from early conceptualisation to full deployment in scalable production environments Ability to design, deploy and maintain ML solutions on modern frameworks to meet functional business requirements, adhering to software engineering best practices and with exposure to version … control, testing, MLOps, CI/CD and API design Hands on experience in using one of 3 major cloud technologies ( AWS, Azure or GCP ) in a production environment, as well as ML platforms ( e.g., AWS Sagemaker, Azure Machine Learning studio ) Be a ‘lifelong learner’ and can demonstrate ...

client data will be sourced, validated, and integrated into Mondra, leveraging where possible our existing Import and Export APIs and identifying where custom API development may be required for fulfil Mondra’s data requirements. You will also contribute to the client contracting process, ensuring technical commitments are clearly defined … including mapping data sources, transformation logic, and validation processes. Identify the client’s BI requirements, and define data export strategies (preferably via existing Mondra API). Identify the authentication/authorisation capabilities of the client, and promote the integration with Mondra’s Identity Provider via Single Sign On. Leverage ...

software engineer to contribute across the full SDLC with Engineering, DevOps, and Product. You will turn business requirements into robust, secure technical solutions and design scalable, high-performing applications and services. The role requires hands-on TypeScript (React, AWS CDK), API design, and a strong focus ...

build the next generation of AI e-commerce platforms. What you will be responsible for Driving technical decision-making, including technology selection, architecture design, and system scalability Designing and implementing high-quality features across the backend and frontend stack Identifying and addressing performance bottlenecks in critical areas … professional software development experience, with strong expertise in TypeScript Proven experience building and maintaining production-grade web applications Strong backend engineering experience, including API design, system architecture, and distributed systems concepts Solid understanding of relational databases and advanced SQL Strong focus on software quality, testing, security, and maintainability ...

career in solution architecture and is looking to deepen their expertise in enterprise integration. You will work alongside senior architects and delivery teams to design and shape integration solutions for clients, with a focus on quality, scalability, and best practice. Responsibilities: Support the design and documentation … technical requirements into clear architecture. Contribute to discovery and requirements-gathering workshops, working with clients and stakeholders to understand their integration needs. Produce solution design documentation including architecture diagrams, data flow maps, and integration specifications. Work closely with development teams to ensure solutions are built in line with ...

distributed video recording systems and advanced reporting/analytics applications. In this role, you will be deeply involved in hands‐on development, architectural design, and cross‐studio collaboration to advance our internal ecosystem. Key Responsibilities Design & Implementation: Architect and develop robust backend solutions to meet the fast‐paced … challenges of global game development. Technical Leadership: Contribute to the team’s software design guidelines, coding standards, and architectural blueprints. Global Collaboration: Partner and collaborate with other Rockstar technology teams across our worldwide studios. Continuous Innovation: Develop a deep understanding of existing systems while researching and adopting new technologies ...

care to pets and their owners through smart, scalable technology. As a Services Developer , youll play a key role in building the service and API layer that underpins our digital ecosystem, working in Agile teams to design, develop and deliver high-quality solutions that make a real difference. … youll bring: Strong experience with .NET/.NET Core and C# Exposure to cloud technologies (Azure preferred) Solid understanding of service-oriented architecture and API design Experience working in Agile environments A customer-first mindset with a focus on outcomes Confidence engaging with both technical and non-technical ...

understand how they use the platform, debug their issues, and shape a roadmap that balances immediate needs with long-term architecture. You will: Design and build the sandboxing platform, client library, and API surface for secure code execution across containerized and virtualized environments Ensure strong isolation, security … maintain a product roadmap for sandboxing, balancing immediate needs against long-term architectural investment Lead architecture reviews and own projects end-to-end, from design through deployment, in fast-paced cross-functional settings Ideally you'd have: 4+ years of experience building high-performance systems software, with meaningful time ...

Development Manager - Digital Platform & API Location: Epsom, Surrey (Hybrid - 2 days office/3 days work from home) Position Overview Are you an agile digital delivery specialist looking to shape the future of platform services across a progressive business? We are seeking a Development Manager - Digital Platform & API … high-value transformation projects with continuous operational BAU demands. Key Responsibilities Product Ownership & Strategy: Lead the roadmap, product backlog, and feature prioritization for our API integration layer and a suite of around 20 application platforms, including flagship digital finance tools. Outsourced Delivery & Vendor Management: Direct external software providers ...

working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used by developers around … exceptionally high technical standards High levels of ownership and autonomy Small team, significant impact Opportunity to deepen expertise in performance, graphics, visualisation, and systems design Package Salary up to £200,000 Hybrid working (London) Private healthcare Pension Additional benefits If you’re interested in building the technology behind modern ...

Strong in a semi‐mainstream programming language (e.g. Python, Typescript, Rust, Go, etc) Proficient with frontend/GUI framework Good understanding of data processing, API design/integration, and system architecture Comfortable adopting new tools and technologies as needed — adaptability is more important than narrow specialisation security/… software for business critical, web‐based applications Build eye‐catching, functional, efficient, and reusable web and mobile‐based sites that drive these web applications Design, build, test, document and maintain APIs and integrations Ensure quality control using industry standard techniques such as automated testing, pairing, and code review Work ...