176 to 200 of 214 FastAPI Jobs in London

Engineering Team Lead | Tech | London, UK

Location
City of Westminster, England, United Kingdom
Virtual Personas Delivery of the Product roadmap Managing a team consisting of a range of skillsets and experience Full stack development, across Python/FastAPI services and React/TypeScript front ends Continuously improving the team's processes for iterative development, including embedding automated testing and CI quality gates into … encouraging our developers Conducting regular 121's, setting objectives and assisting with tailored development plans Our engineering environment includes technologies such as Python (FastAPI), LangChain/LangGraph for multi-agent LLM orchestration, React/TypeScript, PostgreSQL, MongoDB, Redis, Azure (App Service, Container Registry, Blob Storage), Docker, GitHub Actions, and modern ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
Software Engineer on the POS team, you'll work directly across the core POS codebase: the React Native and Expo application, the Python and FastAPI backend service, the Terraform infrastructure, and the Argo CD and Helm deployment configuration. You'll design, build, deploy, and operate the next generation of Cloudbeds … using SQLite, write-ahead logging, synchronization, retry, and conflict‐handling patterns so properties can continue operating during connectivity issues Build and operate Python/FastAPI backend services that support authentication, staff and device workflows, menus, orders, payments, receipts, and hotel‐system integrations Design reliable APIs, data models, caching, synchronization ...

AI‐Powered Systems Integrator: Data Tools for Fund Management

Location
Greater London, England, United Kingdom
environment, building data products and AI-enabled workflows for fund management and finance teams. You will design and ship internal tools using Python, Streamlit, FastAPI and related tech, while reusing existing capability from OE Group's data platform. The role blends integration and product development in a small team. #J ...

Senior Backend Engineer — Build Scalable FinTech Platforms

Location
Greater London, England, United Kingdom
team building scalable systems that power the product for millions of customers. You'll work with Kotlin with Spring Boot and Python with FastAPI, contribute across the full product lifecycle, and mentor colleagues while solving real-world problems in a hybrid London/Athens/Cyprus setup. Expect a fast ...

Senior Backend Engineer

Location
Greater London, England, United Kingdom
routing engine, billing infrastructure and webhook delivery. Python/FastAPI/MongoDB. We process every inbound lead through code you write — sub-100ms p99 latency, idempotent everything, audit-trail everything. Who you are 6+ years building production Python services — async/await fluent Deep MongoDB experience including indexing, aggregation, transactions ...

Senior Machine Learning Scientist

Location
London, United Kingdom
Our client is a leading international bank. If you're looking for a career that will help you stand out, join our client, and fulfil your potential - whether you want a career that could take ...

Senior Machine Learning Scientist

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
Our client is a leading international bank. If youre looking for a career that will help you stand out, join our client, and fulfil your potential - whether you want a career that could take you ...

Senior Python Developer FastAPI Azure

Location
Greater London, England, United Kingdom
London, Greater London | £90k - £110k per year Senior Python Developer/Software Engineer (FastAPI Azure) London/WFH to £110k Are you a backend focused Software Engineer with strong Python skills combined with technical/team leadership experience? You could be progressing your career in a senior, hands-on role ...

Python Engineer

Hiring Organisation
Ncounter Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
£90000 - £100000/annum
stages into secure, reliable services, working alongside architects, consultants and frontend engineers. What you'll be doing: Engineer Python backend services and APIs using FastAPI and asynchronous development patterns Design and integrate LLM capabilities using OpenAI, Azure OpenAI or comparable foundation models Build practical RAG, enterprise search and document intelligence … security, testing, observability and reliability across deployed applications What we're looking for: 5+ years' commercial Python engineering experience, including production backend systems Strong FastAPI, REST API, async Python, PostgreSQL and SQL experience Demonstrable experience integrating LLMs into real applications, rather than purely personal or experimental projects Strong Docker, Kubernetes ...

Global AI/ML Engineer Manager for AI-powered products

Location
Greater London, England, United Kingdom
culture of learning, experimentation, and curiosity; Champion engineering excellence, clean architecture, and maintainable code across squads; Lead complex backend problem-solving in Python, especially FastAPI; Architect and support secure, scalable, and stable APIs and services integrating with LLMs and AWS; Promote DevOps practices, CI/CD pipelines, and automated quality … collaboration between engineering, design, and product teams. Требования: 10+ Years of hands-on software engineering experience with strong backend and API expertise using Python, FastAPI, or Flask; 1+ Year of hands-on experience with LLMs, including RAG solutions, agentic workflows, product integrations, Model Context Protocol servers, or Claude Skills; Experience ...

Software Engineer

Location
Greater London, England, United Kingdom
between tactical edge sensors in low-bandwidth environments and strategic HQs running enterprise analytics. Python Engineering: High proficiency in Python for microservices, API development (FastAPI/Flask), data processing, and backend service development. Docker & Container Orchestration: Deep knowledge of containerisation using Docker, multi-stage builds, minimal base images (for bandwidth … standards, automated testing, and building pipelines that package software into deployable Docker artifacts. The Experience You'll Bring Development & Tech: Python, Microservices, REST APIs, FastAPI, Flask, Asynchronous Programming, Object-Oriented Programming (OOP), Test-Driven Development (TDD). DevOps & Deployment: Docker, Docker Compose, Multi-Stage Builds, Kubernetes, K3s, Edge Computing ...

Senior Python Engineer (Data)

Location
Greater London, England, United Kingdom
data scientists in a supportive environment. How to make an impact Deliver high-performance APIs with a focus on speed and reliability, utilizing FastAPI to serve machine learning insights. Deploy and manage cloud-native services using strong AWS knowledge and Infrastructure as Code (IaC) principles. Leverage Kafka to deliver near … services from design through to production. Your background Extensive professional experience in Python backend development, including building and maintaining highly available backend services (FastAPI preferred) at scale. Proven ability to design, build, and maintain data-intensive applications and infrastructure. Deep understanding of AWS services and hands-on experience with Infrastructure ...

Senior Full-Stack Engineer - Team Agent

Location
Greater London, England, United Kingdom
Office or Iasi Hub. What You'll Do Build and ship features end-to-end for Taktile's AI agent platform: backend in Python (FastAPI) on AWS serverless infrastructure, and frontend in React and TypeScript. Build conversational copilot experiences end to end: chat UI components, streaming responses, rich in-chat … need to have passion for owning systems end to end and grow your DevSecOps skills as well. Team's tech stack Backend: Python (FastAPI, Pydantic) Frontend: React, TypeScript Data: DynamoDB, Postgres Cloud: AWS serverless (Lambda, API Gateway) AI: LLM orchestration, tool-use frameworks, streaming execution Requirements Strong engineering fundamentals with ...

Software Engineer

Location
Greater London, England, United Kingdom
AlliedOffsets is a leading provider of data and technology solutions on the voluntary carbon markets. We have built the industry’s first meta-registry of carbon offsetting projects, retirement transactions, corporate buyers, and intermediaries, in ...

Backend Python Developer

Location
Greater London, England, United Kingdom
Software Engineer (multiple vacancies) - Python | FastAPI | AWS | Microservices £75,000-£100,000 base salary + equity at a household name Flexible benefits budget | Monthly socials | 90 day work-from-anywhere perk Python, FastAPI, PostgreSQL, DynamoDB, AWS, EKS Central London, 1 day a week InsurTech | Microservices | Greenfield Development We've partnered … They're looking for a number of bright, engaging software engineers familiar with or interested in working with their tech stack. Tech stack: Python (FastAPI, Starlette) gRPC GraphQL PostgreSQL DynamoDB AWS EKS CI/CD pipelines What you'll be doing: Contributing to the design and development of scalable backend ...

Python Engineer (Terminal/Modelling/Data)

Location
Greater London, England, United Kingdom
without needing much of a runway, this is built for you. What You'll Do Build and maintain backend services and APIs, on Django, FastAPI, or similar, that power a live product used daily by energy market professionals. Design and operate data pipelines that ingest, transform, and serve energy market … hands‐on experience with AWS and infrastructure-as-code (Terraform). You've run production infrastructure, not just experimented with it. Proficiency with Django, FastAPI, or a comparable async Python framework. Experience with data pipelines and relational databases (PostgreSQL), and building systems that serve data reliably at scale. Expert‐level ...

Senior AI Engineer

Location
Greater London, England, United Kingdom
integrated services. Define and drive architecture for scalable, secure, reliable, and maintainable AI solutions deployed in production. Develop robust, well-tested backend APIs with FastAPI, containerized via Docker and deployed on Kubernetes. Architect and own search and retrieval solutions using Azure AI Search and MongoDB, including design of indexing strategies … including building and shipping production backend services. Hands‐on experience building applications with LLMs such as Azure OpenAI, OpenAI, Anthropic, or similar. Experience with FastAPI or comparable Python web frameworks. Production experience with Docker and Kubernetes, including deployment and management on AKS. Strong hands‐on experience with Azure, including Azure ...

Senior Python Engineer: FastAPI on Azure | Hybrid London

Location
Greater London, England, United Kingdom
role, and shape the architecture of a complex SaaS calculation platform for cyber security insurance markets. You will design, implement, and review code for FastAPI services, work with Azure (AWS optional), mentor engineers, and drive best practices, CI/CD, and quality assurance. This hybrid role offers a London office ...

Backend Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
London, United Kingdom
Employment Type
Permanent
hiring a Backend Engineer to build the platform its product runs on. You'll design multi-tenant data and workflow services in Python and FastAPI and own the integration layer between a Java/Spring core and Python AI services. This is one of nine engineering hires across front … back-end engineering for production SaaS or platform systems. Real multi-tenant or enterprise-system experience covering isolation, permissions and auditability. Strong Python with FastAPI or comparable frameworks, solid SQL/PostgreSQL, and the ability to work at Java/Spring service boundaries. Production AWS experience, plus confidence with ...

Data Engineer

Location
Greater London, England, United Kingdom
dashboards, and integrate systems via APIs. In a team this size, you’ll also get involved in application development - building internal tools with Streamlit, FastAPI, or HTMX that put data directly in the hands of our investment and asset management teams. In your first 3 months you’ll have taken … manual data processes using Python, replacing spreadsheets and ad-hoc workflows with robust, repeatable jobs. Build performance dashboards and reports in Streamlit and HTMX (FastAPI) that Finance, Asset Management, and Fund Management actually use. Integrate internal and third-party systems via REST APIs, improving data accessibility across the business. Champion ...

Full-stack Engineer

Location
Greater London, England, United Kingdom
product instincts — you think about the why as much as the how Frontend excellence: React, TypeScript Backend proficiency: Node.js/NestJS or Python/FastAPI Solid understanding of distributed systems patterns and when to apply them Experience working alongside design functions and translating designs into high-quality product Track record … clinicians work every day. Our stack GCP · GKE · Terraform · GitOps & ArgoCD · PostgreSQL + Redis · TypeScript across the stack (React, NestJS) · Python/FastAPI for ML workloads · Pub/Sub for events · Self-hosted ML models What we offer 28 days holiday + bank holidays Latest MacBook and the right equipment ...

Full Stack Engineer

Location
Greater London, England, United Kingdom
feature flags, and well-maintained non-production environments, enabling rapid iteration and feedback. Our Backend Stack Python is the dominant backend language used Flask & FastAPI Typing is used within our Python stack to power automated documentation and API definitions Relational Databases (PostgreSQL) at the heart of majority of services … from persistent storage to API endpoints, applying industry best practices for validation and reliability. Have experience with Python and web frameworks (we currently use FastAPI with strong typing and Pydantic). Have experience building and consuming APIs, ideally within a service-oriented architecture. Have a working knowledge ...

Senior Machine Learning Engineer (Maternity Leave Cover)

Location
Greater London, England, United Kingdom
Senior Machine Learning Engineer (Maternity Leave Cover) Department: Platform Delivery Employment Type: Fixed Term - Full Time Location: London Description The Machine Learning Engineer role sits within Client Delivery, embedded in the Data & Analytics Consulting (DACs ...

Backend Python Eng | FastAPI, AWS, Microservices | Equity

Location
Greater London, England, United Kingdom
Burns Sheehan Ltd is hiring Software Engineers to help rewrite and scale backend services using Python, FastAPI, and AWS. You will contribute to design, implementation, and production deployments within cross-functional squads in a product-led environment. Ideal candidates have 2-5 years in backend engineering, experience with microservices ...