1 to 25 of 219 FastAPI Jobs in London

professional experience in software engineering and technology, across relevant technical roles and responsibilities; Solid experience with Python and backend development using frameworks such as FastAPI, Flask, or Django; Experience designing and developing RESTful APIs; Good understanding of front-end development with React JS, JavaScript (ES6+), and TypeScript; intermediate knowledge ...

with a strong focus on building scalable, high-performance systems. Technical Skills: Python expertise, with hands‐on experience building backend services and APIs using FastAPI, Flask or similar. Experience in designing and developing end-to-end (E2E) tests to ensure smooth integration between backend and frontend components. A solid understanding ...

through to robust, production-ready applications for enterprise clients. What you'll be doing: Build production applications and APIs using Python and FastAPI Develop LLM, RAG and AI agent solutions Build RAG pipelines covering embeddings, retrieval and generation Work with OpenAI, Anthropic, Mistral, Llama and similar LLMs Use LangChain, LangGraph ...

Python development experience, with 2+ years of AI/ML development Strong proficiency in Python and experience with frameworks such as Django, Flask, or FastAPI Experience with API development, integration, and web services in production environments Hands‐on experience integrating AI or ML models, LLM APIs, or automation frameworks into ...

Security Check) Clearance or be eligible for such level of clearance.## **Technical Expertise*** **Backend Development**: Experience in building microservices using either Python with **FastAPI**, or TypeScript with **Express** or equivalent* **Frontend Development**: Experience in building React applications using TypeScript, leveraging frameworks such as **Next.js** or **Vite**.* **GenAI Frameworks**: Familiarity ...

through to robust, production-ready applications for enterprise clients. What you'll be doing: Build production applications and APIs using Python and FastAPI Develop LLM, RAG and AI agent solutions Build RAG pipelines covering embeddings, retrieval and generation Work with OpenAI, Anthropic, Mistral, Llama and similar LLMs Use LangChain, LangGraph ...

Lambda ECS or EKS API Gateway SNS and SQS EventBridge IAM CloudWatch Serverless and event-driven architectures Desirable experience Stronger Python backend development using FastAPI or Flask. Kubernetes or Amazon EKS. DevSecOps and secure-by-design engineering. Observability, monitoring and automated alerting. < REST APIs and distributed systems. Ansible, CloudFormation ...

Lake/Apache Iceberg, and advanced SQL for large‐scale transformations. Microservices & APIs: experience building modular, production‐grade microservices and REST APIs using Python (FastAPI, Flask, or equivalent); understanding of service design principles including versioning, fault tolerance, and observability. Cloud platforms: working knowledge of cost and usage data schemas across ...

Services, Azure Functions, virtual machines, storage, networking, and monitoring Docker and Linux-based application hosting SQL Server, PostgreSQL, or SQLite IIS, Nginx, Flask, FastAPI, Django, Node.js, or similar web stacks Secure file transfer, API integrations, and healthcare system interfaces Monitoring, alerting, logging, and incident response platforms We offer an excellent ...

ShadCN UI, Redux, Zustand, Jest, Cypress.Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recoveryBackend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django Channels, Flask, RESTful APIs.Databases & Storage: PostgreSQL, MS SQL Server, MongoDB, Firestore, BigQuery, Azure Blob Storage.Cloud & DevOps: Azure (App Services, OpenAI ...

years of professional software development experience with a proven track record of building high-performance, client-facing web applications. Backend Stack: Proficient with Python, FastAPI, PostgreSQL, Redis, and designing secure REST APIs. Frontend Stack: Proficient with TypeScript, React, Jest, and Storybook. Experience with Micro Frontends (MFEs) is a major plus. ...

architecture, RESTful APIs, cloud platforms such as AWS, GCP, or Azure, and containerization with Docker and Kubernetes Solid grasp of modern web technologies including FastAPI, Asyncio, database systems like PostgreSQL, and hands-on experience leveraging AI developer tooling like Claude, Cursor, or GitHub Copilot to accelerate your engineering workflows Exposure ...

delivery. What You’ll Bring Track Record: 5+ years building high-performance, client-facing web applications. Backend Expertise: Deep hands-on experience with Python , FastAPI , PostgreSQL , Redis , and secure RESTful APIs. Frontend Proficiency: Mastery of TypeScript , React , Jest , and Storybook . (Experience with Micro-Frontends is a massive bonus). ...

Responsibilities Design, develop, and maintain frontend applications using React and Next.js. Build, test, and deploy backend services and APIs (Python/Django/FastAPI preferred, but other languages/frameworks welcome). Collaborate with founders, growth team, designers, and other engineers to deliver high-impact features. Ensure scalability, performance ...

Design (SbD) frameworks. 2. Full-Stack Engineering (Web & APIs) 4+ years of production experience with modern Web stacks (TypeScript, React, Node.js, or Python/FastAPI). Strong API design experience (REST, GraphQL, gRPC, WebSocket) and relational/non-relational database design (PostgreSQL, SQLite). 3. Systems & Mobile Architecture (Android ...

technology stack consists of: React Native mobile applications React web applications GraphQL layer using Apollo Server and Apollo Client Python services running Flask and FastAPI Kubernetes based microservice architecture running on Google Cloud Platform Cloud Postgres and Google BigQuery datastores with DBT data transformations Google PubSub and MQTT messaging Terraform ...

improved UX WHAT WE’RE LOOKING FOR Solid experience with Python in a web application context. You have some experience with web frameworks like FastAPI, Django or Flask. We use FastAPI. Experience with Javascript/Typescript and a modern JS framework such as React, Angular or Vue.js. We generally ...

backend-heavy role. Polyglot Proficiency: Strong commercial experience with Ruby (preferably Ruby on Rails) for web application development. Solid proficiency in Python (Django, FastAPI, or similar) with an understanding of data processing. Production experience or a strong foundational knowledge of Rust , particularly in building concurrent, memory-safe, and high-performance ...

experience as a Full‐Stack Developer or Software Engineer working on complex applications. Advanced Python and TypeScript skills, with experience using frameworks such as FastAPI, Pydantic, Node.js, Express or Next.js. Strong React experience and confidence building sophisticated, user‐friendly front‐end applications. Strong SQL and database experience, including performance optimisation ...

Experience of working in a Scrum Team and an Agile environment Design, build and support scalable and secure full-stack web applications using Python (FastAPI) Exposure to front-end development using React/Typescript. Support and enhance existing web applications to ensure stability and performance. Work with business and technical ...

partners and turning what they need into something buildable. What You Will Need Python. Serious commercial experience building back end services, APIs and tooling. FastAPI, Django, Flask, whichever you have used in anger. TypeScript. Serious commercial experience on modern front ends with React, Vue or Angular. Linux. Properly comfortable without ...

Azure Storage, Service Bus, API Management or managed identities. Experience with Azure DevOps, GitHub Actions, Bicep, Terraform or comparable application‐infrastructure tooling. Experience with FastAPI, Express, serverless functions or containerised deployment. Experience with Figma, usability testing, product analytics or collaborating closely with product designers. Experience with document-heavy applications, search ...

Kotlin, Java 17+, Spring Boot & Co, JPA/Hibernate, SQL and NoSQL, Elasticsearch, Gradle, JUnit/AssertJ/MockK Metrics, analytics and AI: Python, FastAPI, Polars, LangChain Frontend: React (TanStack Query/React Router/react-hook-form + Zod), TypeScript, nx.dev, Tailwind CSS/shadcn/ui, Vitest/ ...

using React.js (frontend) and Node.js (backend). Build and integrate backend services and APIs using Python with a web framework (e.g. Django, Flask, or FastAPI). Design, query, and manage relational and NoSQL databases (PostgreSQL, SQL, MongoDB). Work on machine learning tasks including object detection, model training, and deployment. ...

demonstrate business value Supporting demonstrations, proposals, bids and the development of new AI offerings Experience Required Building robust AI services and APIs using Python, FastAPI, Django or Flask, supported by strong SQL Create engaging, responsive AI products using TypeScript, JavaScript, React and Next.js Ground LLM applications in trusted business data ...