76 to 91 of 91 FastAPI Jobs in England

workflows. What You’ll Do Build & own core backend systems · Build and optimise databases for complex, real-world data · Design and implement APIs using FastAPI for AI workflows and product features · Build and scale LangGraph-based multi-agent systems with checkpointing, retries, and observability · Integrate and scale vector search, knowledge … real customer usage and feedback What We’re Looking For Essential · 2-3 years building backend systems for real users · Production experience with FastAPI (or similar modern Python frameworks) · Solid understanding of API design, PostgreSQL, and distributed systems fundamentals · Experience deploying and operating services on cloud infrastructure ...

Python | React Location: London (hybrid) Salary: £80,000 – £150,000 + meaningful equity Hiring for mid-senior-lead levels! Tech Stack: Backend: Python (Flask, FastAPI) Frontend: React, TypeScript Cloud: GCP or AWS Do you like building software that actually gets used? Not demo-ware. Not slide-ware. Real systems … Just smart people building important things properly. What you’ll be doing: Designing and scaling backend services and APIs in Python using Flask and FastAPI Building intuitive, high quality front end experiences in React and TypeScript Integrating AI models and third party systems into robust production workflows Owning features ...

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, and API specifications. Security & Scalability: Ensure robust application security … Architecture: Strong command of OOP concepts, Design Patterns, and Domain-Driven Design. Web Frameworks: Expertise in at least one major framework (Django, Flask, or FastAPI). APIs: Strong understanding of RESTful API design and web application principles. Technical Lead: Proven track record of designing large-scale applications and providing architectural ...

architecture across the portfolio. Essential Requirements 3-6+ years building production-grade full-stack applications, with clear ownership. Strong backend experience in Python (FastAPI preferred) and solid database skills (PostgreSQL/MongoDB). Proven experience building and shipping mobile apps with React Native. Strong React fundamentals (Next.js experience … Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Frontend : React/Next.js Mobile: React Native Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). ...

FULL STACK ENGINEER - LONDON (WATERLOO, HYBRID) KEY POINTS Salary up to £75,000 Hybrid working - 3 days per week in Waterloo, London Python, FastAPI, PostgreSQL, React or Next.js End-to-end ownership across frontend and backend ABOUT THE CLIENT We're working with an ambitious AI-driven organisation building advanced … with React and/or Next.js to deliver clean, responsive user experiences. On the backend, you'll design and maintain APIs using Python and FastAPI, ensuring systems are scalable and performant. You'll work extensively with real-time sports data, translating complex logic into clean, maintainable code. Experience with ...

This is a hands-on role focused on delivering high-quality user experiences in React and TypeScript while building and extending the Python/FastAPI services that power the platform. You will work closely with product and design to translate Figma concepts into production-ready interfaces such as real-time … personalised care flows, ensuring they feel intuitive while meeting the demands of a regulated environment. On the backend, you will develop and extend FastAPI services, design clean REST APIs, and work with PostgreSQL and SQLAlchemy to manage structured data. You will also contribute to implementing OAuth2 authentication across the stack ...

product Experience with Hotwire (Turbo & Stimulus) and Tailwind CSS Familiarity with background job processing (Sidekiq, Delayed Job, etc.) Experience with Python and FastAPI - our data pipeline and some supporting services are built in Python, and you'd be expected to maintain and contribute to these alongside the Rails codebase Familiarity … infrastructure and deployment platforms Experience working in a startup or high-growth environment Our Stack Backend: Ruby on Rails, PostgreSQL, Sidekiq Data & Services: Python, FastAPI Frontend: Hotwire (Turbo + Stimulus), Tailwind CSS, Three.js Infrastructure: Render Tooling: GitHub Actions, Sentry About Resi Resi is the UK’s number one home extension ...

BACKEND ENGINEER - LONDON (WATERLOO, HYBRID) KEY POINTS Salary up to £75,000 Hybrid working - 3 days per week in Waterloo, London Python, FastAPI, PostgreSQL, AWS & Docker Building real-time AI solutions within the sports industry ABOUT THE CLIENT We're supporting a rapidly growing, AI-focused organisation operating within … 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 and data-heavy, so experience with asynchronous programming and scalable backend architecture ...

Technical Lead | Product Technical Lead | Tech Lead | Product Manager | AI/Data Science | Python | FastAPI | SaaS | Hybrid 2 days a week | Central London | £85,000 + 15% bonus I am currently working with a brilliant consultancy with deep expertise in their field of Data and Cyber Security solutions, predominantly with … fullest. Key skills Strong software engineering skills, delivering end-to-end software products. Highly product orientated. Highly skilled in Python development, with knowledge of FastAPI framework. Good databases knowledge with schema design and SQL. Some front-end development preferably TypeScript & React is highly desirable. Experience of designing scalable systems ...

part of a team that's pushing boundaries. What you'll do Design, build, and optimize high-performance Back End systems in Python and FastAPI Develop and maintain Back End systems that handle large volumes of Real Time data Write clean, testable, and maintainable code following best practices Contribute … collaborative, fast-moving environment What we're looking for Strong professional experience with Python Solid experience building RESTful APIs with FastAPI (or similar frameworks like Flask/Django) Passion for performance, scalability, and automation Experience or interest in AI A proactive mindset - someone who loves solving problems and experimenting with ...

features used by enterprise customers. Develop modern, responsive interfaces using React/Next.js . Design and optimize APIs, data pipelines, and integrations using Python (FastAPI/Django) . Collaborate with design, product, and AI teams to deliver new functionality quickly and reliably. Contribute to architectural decisions, system scalability, and engineering … Looking For: Proven experience as a Full-Stack Engineer in a startup or fast-paced environment. Strong proficiency in React/Next.js and Python (FastAPI/Django) . Experience shipping scalable, production-grade software. Exposure to or interest in AI/ML-driven products . Startup experience or comfort with ...

thrives in a collaborative, fast-paced startup environment. What you’ll do Build and maintain scalable backend services using Python and FastAPI Develop modern, responsive user interfaces using React and Next.js Design and integrate APIs that power data-driven scientific applications Work with large biological datasets and build efficient data … startup or fast-moving environment Strong problem-solving skills and the ability to take ownership of projects Nice to have Experience with FastAPI Exposure to data engineering or data pipelines Experience working with scientific or data-heavy applications Interest in biotech, healthcare, or scientific software Following your application Jay Robins ...

Platforms Itential Automation Platform Cisco NSO – Service development and lifecycle Apache Airflow Hasi Corp Vault Openshift Automation development Python Fast API Rest API Netconf Yang modelling XML/Json Jinja/TextFSM Pytest Unit testing ...

specified. You'll ship features end-to-end: from problem framing through to production. The stack is Next.js/React on the front, FastAPI/Python on the back, PostgreSQL/Supabase for data, deployed on Vercel/AWS. Day-to-day looks like: Designing and building core platform features … shipped products, not just features. You can point to something real. You're strong across the stack but especially deep in Python/FastAPI and React/Next.js. You've worked with LLMs in production - prompt engineering, evals, handling non-determinism. Not just tutorials. You have taste. You care about ...

🏠 Founding Engineer (AI PropTech) | Up to £140,000 + Equity | Hybrid (London) 🏠 We the exclusive talent partner on behalf of a seed start-up who're building AI agents for the real estate market. They ...

AI Engineer - OpenAI/Python - Birmingham Hybrid 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 ...