26 to 50 of 58 FastAPI Jobs in London

stage environment (ownership, ambiguity, fast iteration) Someone who can collaborate well with technical + non-technical/domain experts Nice to have: Django/FastAPI AWS/cloud platform experience Scientific/healthcare/bioinformatics data exposure (not essential) Why it's interesting: Real-world impact in healthcare/life ...

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 ...

Backend Software Engineer/Developer (Python FastAPI SQL) London to £95k Are you a data centric Backend Software Engineer with strong Python, SQL and FastAPI skills? You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses … aware You're collaborative and pragmatic with great communication skills Apply now to find out more about this Backend Software Engineer/Developer (Python FastAPI Data Azure) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. ...

monitoring of models. Support scalable ML solutions across use cases like recommendations, forecasting, and automation. Work with tools like Airflow, Azure ML, and FastAPI to deliver production-ready systems. Automate model deployment workflows using CI/CD tools (e.g. GitHub Actions, Azure DevOps). Contribute to the reliability, observability … Collaborative team player with excellent communication skills. Technical Stack: Languages: Python (primary), SQL, Bash Cloud: Azure, AWS Tools: MLflow, Azure ML, Airflow, Docker, Fargate, FastAPI Data: Snowflake, Delta Lake, Redis, Azure Data Lake Infra & Ops: Terraform, GitHub Actions, Azure DevOps, Grafana, Azure Monitor Desirable skills/knowledge/experience: Knowledge ...

Steadrock's internal systems: Compute Infrastructure (DGX) Manage our NVIDIA DGX server (Linux environment, CUDA, system health) Build, test, and maintain internal APIs (FastAPI/Flask) Design stable ngrok/reverse-proxy/network connections for remote access Optimise GPU utilisation and monitor performance AI Agent & Automation Development Develop pipelines … What You Need Technical Strong Python Experience with Linux (Ubuntu), bash, SSH Understanding of GPUs, CUDA basics, or willingness to learn fast Experience with FastAPI, Flask or similar Basic networking knowledge (ports, tunnels, proxies) SQL or NoSQL experience Preferred Experience with LLM APIs (OpenAI, Anthropic, DeepSeek, Qwen) Exposure to Docker ...

squad. You'll be building backend APIs and deploying them into a modern AWS + Kubernetes environment. 🔑 The Role • Building backend APIs in Python (FastAPI ideally) • Working with PostgreSQL • Deploying services into AWS (EKS preferred) • Managing container workloads in Kubernetes • Building infrastructure with Terraform • Implementing CI/CD pipelines (GitHub … Actions, GitLab, Jenkins, ArgoCD) • Shipping production-grade cloud-native applications 🎯 What We’re Looking For 👉 Strong Python backend development experience 👉 API development (FastAPI highly desirable) 👉 Solid SQL/PostgreSQL knowledge 👉 AWS experience (EKS ideal) 👉 Kubernetes deployment experience 👉 Terraform (Infrastructure as Code) 👉 CI/CD automation experience Nice to have: 👉 Experience ...

squad. You'll be building backend APIs and deploying them into a modern AWS + Kubernetes environment. 🔑 𝗧𝗵𝗲 𝗥𝗼𝗹𝗲 • Building backend APIs in Python (FastAPI ideally) • Working with PostgreSQL • Deploying services into AWS (EKS preferred) • Managing container workloads in Kubernetes • Building infrastructure with Terraform • Implementing CI/CD pipelines (GitHub … Actions, GitLab, Jenkins, ArgoCD) • Shipping production-grade cloud-native applications 🎯 𝗪𝗵𝗮𝘁 𝗪𝗲’𝗿𝗲 𝗟𝗼𝗼𝗸𝗶𝗻𝗴 𝗙𝗼𝗿 👉 Strong Python backend development experience 👉 API development (FastAPI highly desirable) 👉 Solid SQL/PostgreSQL knowledge 👉 AWS experience (EKS ideal) 👉 Kubernetes deployment experience 👉 Terraform (Infrastructure as Code) 👉 CI/CD automation experience Nice to have: 👉 Experience ...

Job Title: AI/ML Engineer – Data Science Location: United Kingdom (Remote/Hybrid) Eligibility: Permanent UK Citizenship required Experience: 5–7 years (Mandatory in Data Science/AI-ML) Role Overview We are seeking ...

Senior Software Engineer | London | £100,000 - £160,000 | Python | FastAPI | AWS Location: London based - hybrid Salary: £100,000 - £160,000 + equity Tech Stack: Backend: Python (experience with FastAPI or Django or Flask beneficial) Cursor, Claude Code AWS - experience with Azure & GCP beneficial Are you a backend engineer who cares … complex problems, and be part of an exceptional team, get in touch at imogen@sr2rec.co.uk. Senior Software Engineer | London | £100,000 - £160,000 | Python | FastAPI ...

effective data architecture solutions. Experience working with or supporting cloud migrations. Languages: Python (primary), SQL, Bash Cloud: Azure, AWS Tools: Airflow, DBT, Docker, Fargate, FastAPI Data Platforms: Snowflake, Delta Lake, Redis, Azure Data Lake Infrastructure and Operations: Terraform, GitHub Actions, Azure DevOps, Grafana, Azure Monitor Desirable Skills and Experience Experience … working with enterprise data platforms such as Snowflake and Azure Data Lake. Experience deploying data or machine learning models as APIs using FastAPI or Azure Functions. Understanding of monitoring, model performance tracking and observability best practices. Familiarity with orchestration tools such as Airflow or Azure Data Factory. ...

High trust, high ownership: Make decisions that move the whole company forward. We value autonomy, speed, and impact. Stack: Build with modern tools — Python, FastAPI, TypeScript, LLMs, MLOps What We’re Looking For 2+ years of software development experience Proven track record of building and shipping full-stack products … working in a fast-moving, high-ambiguity startup You’re looking for a large team with established roadmaps and guardrails Tech Stack Core: Python, FastAPI, TypeScript, React AI/ML: OpenAI, Anthropic, computer use, evals, voice agents Infrastructure: Azure, Docker Process: Initial Screen (30 min video call with ...

intensive technical assessment, reflecting the complexity and rigor of the platform. What You’ll Do ● Architect and implement production-grade REST APIs using Python (FastAPI) to manage complex financial data submissions. ● Design secure ingestion pipelines for large-scale datasets (CSV/Parquet), leveraging S3, presigned URLs, automated webhooks, and high … from concept through to production. ● 5+ years environment in data-heavy environment in a highly regulated financial services space Nice-to-Haves ● Experience with FastAPI, Pydantic, or SQLAlchemy. ● Infrastructure as Code exposure (Terraform preferred). ● Experience working with data-heavy workflows, market data, or formats such as Parquet. ● Background ...

Software Developer Annual Salary: £40k - £45k, dependent on experience Location: Cannon Street, London Job Type: Permanent - 4 days a week onsite Start Date: Immediately A new exciting permanent opportunity, for a Software Developer to join ...

This role is outside IR35 and offers the opportunity to work with cutting-edge technologies. Hiring Company: A forward-thinking organization utilizing Python (Flask, FastAPI), PostgreSQL, and AWS to deliver scalable, high-quality backend systems. Key Responsibilities: Architect with Purpose: You will reason about software placement within broader business systems … logic from persistent storage layers to API endpoints. Execute with Python: Apply deep expertise in Python and web frameworks, specifically transitioning from Flask to FastAPI and using Python Typing. Build Scalable APIs: Demonstrate a strong background in Service Oriented Architecture to develop scalable, well-documented APIs. Query with Precision ...

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 ...

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). ...

Backend Software Engineer/Developer (Python FastAPI SQL) London to £95k Are you a data centric Backend Software Engineer with strong Python, SQL and FastAPI skills? You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses ...

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 ...

role. 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 … 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 ...

Senior Full Stack Engineer (AI) | London | £100k to £150k | React | Django | FastAPI Location: London Salary: £100,000-£150,000 + benefits This role is for Engineers who are intellectual and driven by deep complexity. This is about building tools that help people make sense of exceptionally complex systems. You will … competent as they are ambitious. What you will be doing Building and evolving full stack applications used by technical teams, using Django, FastAPI & React Creating interfaces that help users understand complex behaviour and data Working closely with others to shape how tools should work and feel Balancing speed, quality ...

Behind AI | Global Impact, High Ownership | Remote (UK) | £80-100k + Bonus + Equity Designing and owning backend services in Python (Django/FastAPI) Building scalable APIs and workflows supporting global usage Improving reliability, performance, and developer experience Working closely with Product and Design to shape features … Python) | Building the Human Intelligence Layer Behind AI | Global Impact, High Ownership | Remote (UK) | £80-100k + Bonus + Equity Python (Django core) FastAPI (in parts) PostgreSQL TypeScript/Vue.js AWS Modern CI/CD practices What They’re Looking For - Senior Product Engineer II (Python) | Building the Human ...

Senior Software Engineer | London (hybrid) | £85k - £99k + Equity | Python | FastAPI | SaaS Location: London (hybrid) Salary: £84,000 to £99,000 plus equity Tech Stack: Backend: Python (FastAPI), experience in any strongly typed language is required Frontend: TypeScript (Vue.js) Cloud Systems: experience across any GCP, Azure … email at imogen@sr2rec.co.uk. We're arranging interviews within the next 2 weeks. Senior Software Engineer | London (hybrid) | £85k - £99k + Equity | Python | FastAPI | SaaS ...

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 ...