51 to 66 of 66 FastAPI Jobs in the City of London

Company | HealthTech (B2B2C) 📏 Size | ~10 people 🌱 Stage | Pre-Seed > Seed 🧢 Role | Software Engineer 🪜 Level | Mid–Senior ✨ Tech | Python, TypeScript, FastAPI, React, Cloud infrastructure, AI/LLMs 🎯 Areas | agentic AI, real-time systems, product development 📍 Based | Central London, near Farringdon 💻 Working | in-office 💰 Offer | £100–120k + meaningful equity Workonomics ...

Full Stack Location: London (hybrid) Salary: Up to £100,000 ( 10% DOE) + equity Tech Stack Python ecosystem - experience with Django, or Flask, or FastAPI TypeScript & React across the frontend - any frontend experience beneficial Cloud native environment This is not a “slot into an existing team” role. This ...

they're now looking for a founding-level engineer to join the core London team. Tech stack: Frontend : React, Next.js, TypeScript Backend : Python, FastAPI Happy for candidates to lean towards to backend or the frontend Why this role stands out: Stealth-stage, high-impact : You’ll work on tech that ...

iterative environment while maintaining high engineering quality Shape backend engineering culture, tooling and processes for a rapidly scaling product 🛠️ Tech Environment Python with FastAPI PostgreSQL Event driven backend services and data heavy workflows Modern AI frameworks and agent driven systems integrated into backend pipelines Engineers who love solving performance, scaling ...

systems that power healthcare innovation at scale. Full remote flexibility across the UK, total ownership of greenfield projects, modern tech stack (Python/FastAPI/Cloud), and a culture that rewards curiosity, autonomy, and clean engineering. An AI HealthTech company is expanding its high-calibre engineering team and looking … designing, building, and scaling complex systems that solve real problems in healthcare. Role Design and build production-grade backend systems using Python and FastAPI Develop distributed, high-performance services and APIs for AI-driven platforms Contribute to architecture decisions, scalability planning, and system optimisation Implement best practices in testing ...

seeking a Backend Engineer to build highly scalable and maintainable services using modern technologies.. What You’ll Do: Develop backend services in Python (FastAPI/Django) Work on microservice architecture, data processing, and customer experience Collaborate across Product, Design, and Engineering teams Contribute to code reviews, pair programming, and Agile … improvements Tech Stack: Python, FastAPI, Django, AWS, Kubernetes, Helm, Terraform, PostgreSQL, Opensearch What We Offer: Competitive salary + performance bonus 28 days holiday + bank holidays + birthday off Private medical insurance, L&D opportunities, mental health support Hybrid working and a vibrant office culture If you’re ready ...

work with one of the UK's fastest growing Scale-Ups as a Backend & Integrations Engineer across thier SaaS apps. A hands on FastAPI & Python focused role for someone who is ready for the fast paced scale-up environment. What you’ll do Own backend features and API integrations (Python … FastAPI, gRPC, SQL). Adapt and extend auto-generated pipelines and front-end outputs. Build connectors for APIs, files, and external systems. Integrate LLM-based capabilities with robust evaluation and monitoring. What we’re looking for Strong Python backend/API experience; SQL and data modeling skills. Proven integrations experience ...

benchmark these systems rigorously to ensure they actually work, not just "feel" smart. Build the Backend Foundation: You will spend significant time in Python (FastAPI, SQLAlchemy) building the APIs, data structures, and services that power the product. You are an engineer who ensures the "AI" is delivered on reliable, production … Experience Production Engineering (5+ years): You are a strong software engineer first. You have extensive experience building and maintaining backend services in Python (ideally FastAPI or similar async frameworks) deployed to modern cloud providers (GCP/AWS) or point solutions (Railway, Render, Vercel) Applied AI Architecture: You have built complex ...

Backend Software Engineer – Python/FastAPI/Event Driven Architecture Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 About the Role: This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating one solution … real-world engineering not just building software, but helping change how things are designed and built. Tech Stack within the engineering environment: Backend: Python, FastAPI, Pydantic, PostgreSQL, Docker Infrastructure: GitHub Actions, GCP, Kubernetes (optional) Paradigms: event-driven architecture Responsibilities Build and maintain backend services using FastAPI and Python for geometry ...

pivotal role in designing, building, and scaling the company’s backend systems and infrastructure. You’ll architect reliable, high-performance services in Python (FastAPI, Flask) and help evolve the platform for large-scale AI workloads. A strong DevOps mindset and experience with production-scale systems will be key to success. … Responsibilities: Architect and develop scalable, high-performance backend services using Python (FastAPI, Flask) and Node.js. Design, build, and maintain an AWS-based platform supporting AI, data, and web products. Manage and optimise Kubernetes clusters for availability, performance, and cost efficiency. Develop and maintain CI/CD pipelines with GitHub Actions ...

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 ...

product and engineering direction, you’ll fit right in. What you’ll work on Designing and building backend systems using Python and frameworks like FastAPI , or similar. Creating reliable, scalable architecture for real-time decisioning systems. Implementing caching, queuing, load balancing, and distributed processing. Shipping high-quality code quickly … with the founding group to define engineering culture, processes, and standards. What we’re looking for Strong backend engineering experience Python . Experience with FastAPI , Django , Flask , or related frameworks . Confidence designing system architecture from scratch and making pragmatic trade-offs. Comfort working in ambiguous, high-autonomy environments. ...

Tech Strategy for a Profitable FinTech Scale-Up Hybrid (London) or remote within the UK £160,000 per annum plus stock options Python | Django | FastAPI | AWS | Rust | Postgres | Event-Driven Architecture | Machine Learning Technical Lead - We're working with a leading fintech scale-up that’s transforming how small businesses … Tech Strategy for a Profitable FinTech Scale-Up Hybrid (London) or remote within the UK £160,000 per annum plus stock options Python | Django | FastAPI | AWS | Rust | Postgres | Event-Driven Architecture | Machine Learning ...

data team scales. ✨ Remote-first culture – flexibility to work from anywhere What you’ll be doing: API strategy & development – own and scale FastAPI endpoints that deliver real-time access to platform data. Data pipeline development – build ingestion and replication pipelines with best-in-class observability, latency, and resilience. Platform technical … with engineers, product managers, and commercial teams to deliver production-grade solutions. Tech stack and requirements: Python – must-have, with production-grade engineering expertise FastAPI – Nice to have Google Cloud Platform (GCP) – must-have, ie BigQuery, Cloud Run, and Cloud Storage dbt – strong advantage, with scope to shape best practice ...

Head of Engineering London/Hybrid Total Package - Up to £150k (Basic salary + equity) Build the Product Engine Behind the Next Era of Climate Action If you are an engineering leader who wants your ...

Project description Luxoft is looking for a Senior Data Engineer for development of new application to be used by investors and investment committees to review their portfolio data, tailored to specific user groups. Responsibilities Work ...