24 of 24 FastAPI Jobs in Central London

engineers and leading technical projects Comfortable working in fast-paced startup environments Experience with AI/LLM integrations is highly desirable Python backend experience (FastAPI, Flask, Django) is beneficial Excellent communication and stakeholder management skills This role offers hybrid working, with an office location based in London. For any additional ...

Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI, Claude, Gemini) Docker, Kubernetes (AKS), Azure App Services Azure DevOps, Azure Boards, CI/CD pipelines API Management, OAuth2 ...

architecture decisions, delivery, and continuous improvement of engineering practices. Key Responsibilities Design and deliver scalable, secure web applications Build backend services using Python (e.g. FastAPI, Flask, or Django) Develop modern frontend applications using React and TypeScript Design and maintain RESTful APIs 5+ years’ experience as a full-stack developer ...

culture What They’re Looking For Strong Python backend development experience in production environments (at least2 years) Experience building APIs using frameworks such as FastAPI, Flask or Django Good knowledge of at least one Python-compatible frontend framework Strong experience with AWS services and cloud-native development Understanding of event ...

features end-to-end in collaboration with cross-functional teams. Develop cloud-native and containerised applications using technologies such as Java (Spring Boot), Python (FastAPI), Node.js and modern datastores. Build solutions within an Agile and DevSecOps environment, embedding security and quality throughout the delivery lifecycle. Integrate backend services into ...

leverages graph databases, machine learning, and modern cloud infrastructure to deliver intelligent procurement and customer service solutions. Our stack includes: Backend Services : Python 3.13, FastAPI, async micro-services architecture Data Layer : Neo4j graph database, PostgreSQL, complex data modelling AI/ML : OpenAI integration, semantic search, conversational agents, unstructured data analysis ...

enhancement and maintenance of existing applications. Optimize microservices for peak performance. Requirements: Minimum of 5 years' Python coding experience 3+ years using the FastAPI framework. AI experience (Claude, Cursor etc) Experience within a Front-end Development role Experience within a line management capacity Proficiency in microservices and related tools Expertise ...

team as it grows. The best candidates will be energised by that scope, not daunted by it. REQUIREMENTS: Strong Python in production, ideally including FastAPI or similar async frameworks Proven experience building and deploying LLM-powered applications, not prototypes that never saw users Solid understanding of data modelling and PostgreSQL ...

leverages graph databases, machine learning, and modern cloud infrastructure to deliver intelligent procurement and customer service solutions. Our stack includes: Backend Services : Python 3.13, FastAPI, async micro-services architecture Data Layer : Neo4j graph database, PostgreSQL, complex data modelling AI/ML : OpenAI integration, semantic search, conversational agents, unstructured data analysis … small team Adaptable : Comfortable with ambiguity and rapid iteration Mentoring: Able to mentor less-experienced Software Engineers. Nice-to-Have Qualifications Experience with FastAPI or similar async Python web frameworks Experience with Neo4j or other graph databases Experience with graph algorithms and network analysis Experience with Helm and Kubernetes operators ...

Salary: £50,000 - £85,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used ...

Then a mixture of the following on top: GenAI LLM APIs Experience designing, testing and deploying AI/ML solutions Chat Bots/Agents FastAPI Microsoft Agent Framework LangChain Vector database ML Engineering Job Offer Car allowance of 5k Private medical 25 days + BHS Option to buy 10 more ...

work independently Technical Environment The primary stack is Ruby on Rails. However, we are open to candidates with strong experience in: Python (Django/FastAPI) Node.js Go Elixir The focus is on strong backend engineering fundamentals rather than a specific language. Preferred Experience Experience scaling systems to large user bases ...

leverages graph databases, machine learning, and modern cloud infrastructure to deliver intelligent procurement and customer service solutions. Our stack includes: Backend Services : Python 3.13, FastAPI, async micro-services architecture Data Layer : Neo4j graph database, PostgreSQL, complex data modelling AI/ML : OpenAI integration, semantic search, conversational agents, unstructured data analysis … with observability tools (OpenTelemetry, Prometheus, Grafana) Familiarity with agentic coding workflows — using AI agents to scaffold, refactor, test, and document code autonomously Experience with FastAPI or similar async Python web frameworks Experience with Neo4j or other graph databases Experience with graph algorithms and network analysis Experience with Helm and Kubernetes ...

Salary: £60,000 - £85,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used ...

agentic workflows with tool usage and multi-step reasoning Strong understanding and implementation experience of RAG systems Familiarity with MCP/FastMCP/FastAPI or similar orchestration patterns Strong understanding of LLM trade-offs including hallucination mitigation, latency, and cost optimisation Experience deploying AI systems in cloud environments such ...

manual processes. They’re building something that handles tenant communication, operations, compliance and transactions through AI agents instead. What They're Looking For Python FastAPI LLMs (production systems) AI agent frameworks (LangGraph or similar) RAG pipelines Postgres Redis Async processing and queuing (Celery, RabbitMQ, SQS) Event-driven architecture CI/ ...

experience required: • Python and production-grade coding • LLMs, AI Agents & Agentic Workflows • LangChain/LangGraph or similar frameworks • RAG Systems • MCP/FastMCP/FastAPI architectures • Cloud platforms (AWS, Azure, or GCP) • AI system deployment, orchestration & optimisation. This role offers the opportunity to work on large-scale AI products ...

Kubernetes (EKS) Strong knowledge of API design and security (API Gateway, OpenAPI, OAuth2, JWT) Experience with cloud-native frameworks such as Flask or FastAPI Solid understanding of Kubernetes security, IAM, encryption, and CI/CD tooling Exposure to enterprise integrations and event-driven architecture patterns Why This Opportunity is Great ...

environments, diagnosed the problems, fixed them, and unlocked the next phase of growth. This is about scaling products, not just teams. Tech Stack: Python · FastAPI · React · TypeScript · GCP Salary: £190,000 - £270,000 + Equity Working Arrangements: 3 days per week in Central London office Why it might interest ...

solutions, not just implement them Setting technical direction and raising engineering standards within a small team What They’re Looking For: Strong Python experience (FastAPI, Django, Flask etc) Track record of owning or significantly evolving production systems Experience making architectural decisions and working across the full lifecycle Comfortable operating ...

RSSB are now seeking an experienced Principal Technical Lead to drive the hands-on technical delivery of a new greenfield industry services platform. This is an exciting delivery-focused role for a senior engineer who ...

We are hiring for a Full Stack Developer, working closely with a wide range of business lines. You will be given the opportunity to work with technical and non-technical experts and develop innovative solutions ...

Lead Python Developer – Climate Tech 👥 Non-Profit | Major Philanthropic Backing | Real Engineering Problems 📍 London (Hybrid, 2/3 days per week) 🔧 Python, FastAPI, PostgreSQL, GCP, Docker I'm working with a fast-growing climate-tech non-profit tackling one of the most important infrastructure challenges in the energy transition. Backed … optimisation, and performance challenges at scale - a long way from your average API job. ⚡ Requirements: 7+ years experience developing and maintain scalable Python/FastAPI back-end services Ideally worked with high-performance APIs for complex hierarchical data queries and grid modelling computations Managed and optimised GCP cloud infrastructure, implementing ...

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 company ...