1 to 25 of 33 FastAPI Jobs in Central London

Python Developer

Hiring Organisation
Spait Infotech
Location
City of London, London, United Kingdom
development best practices. Create and maintain technical documentation. Ensure application security, scalability, and reliability. Required Skills Strong proficiency in Python. Experience with Django, Flask, FastAPI, or similar frameworks. Strong knowledge of REST APIs and web services. Experience with SQL databases such as MySQL, PostgreSQL, or SQL Server. Familiarity with NoSQL ...

Software Engineer (AI+Fullstack)

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£55,000
skills by exploring and experimenting with emerging technologies, including GenAI. Your skills and experience: 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 ...

Software Engineer (backend)

Hiring Organisation
Primis
Location
City of London, London, United Kingdom
eededRequ ir ed:6+ years of professi onal full-stack develo pment experience with a strong backend focusProficiency in backend technologi es - Python (FastAPI, Django, or F lask) is preferred; Node.js, Java, or Go also consi deredStrong understandin g of RESTful APIs, database design, and data modelling ...

Senior Python Engineer

Hiring Organisation
Levy Global
Location
City of London, London, United Kingdom
your primary language Solid understanding of software engineering principles (SOLID, testing, clean code) Experience with AWS cloud services Hands-on experience with Django, FastAPI and/or Flask Strong REST API development and integration experience Experience working within Agile/Scrum teams Excellent communication and problem-solving skills Nice ...

Senior Full Stack Developer

Hiring Organisation
Glite Tech
Location
City of London, London, United Kingdom
scalable mobile APIs (REST, HTTPS, etc.). Good principles of security management (secrets, protocols, etc.). Experience with some Python web frameworks (Django, Flask, FastAPI, etc.). Desirable Skills 👌 Can speak, or learning to speak, more than one language Experience with real-time and/or in-memory databases Experience ...

Senior Python Developer - FinTech

Hiring Organisation
Client Server
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
London three days a week with flexibility to work from home the other two days. About you: You have strong Python development skills including FastAPI (will also consider Django or Flask experience) You have experience of working on event driven microservices with large scale data You're keen to take ...

Artificial Intelligence Engineering Consultant

Hiring Organisation
MBN Solutions
Location
City of London, London, United Kingdom
agent-based applications Deliver rapid prototypes to validate technical and business use cases Build and maintain production-grade AI services and APIs (e.g. FastAPI or similar) Collaborate with engineers, data scientists, architects, and business stakeholders to deliver end-to-end solutions Evaluate and implement AI technologies across open-source ...

Senior Software Engineer

Hiring Organisation
Searchability®
Location
City of London, London, United Kingdom
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 ...

Python Developer

Hiring Organisation
Radley James
Location
City of London, London, United Kingdom
practices Requirements 7+ years of backend software engineering experience building and scaling production systems Strong Python development experience with modern backend frameworks such as FastAPI, Flask or Django Deep understanding of PostgreSQL, database optimisation and performance tuning Experience scaling distributed systems and data-intensive applications Strong knowledge of Redis, caching … containerised deployments Familiarity with CI/CD pipelines, automated testing and Git-based development workflows Excellent problem-solving and communication skills Technology Stack Python FastAPI/Flask/Django PostgreSQL Redis Celery Kafka/RabbitMQ/Azure Service Bus Docker Kubernetes Azure/AWS/GCP REST APIs Microservices Architecture ...

Lead Software Engineer

Hiring Organisation
MARSH CORPORATE SERVICES LIMITED
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
pensions covenant/advisory/trustee-facing tools, and strong ability to connect technical design to covenant outcomes. Experience with Python-based services (e.g., FastAPI) and modern web stacks (e.g., Next.js/React.js) in real-world delivery. Practical experience delivering GenAI/agentic solutions (prompt engineering, RAG, governance patterns ...

Full Stack Engineer

Hiring Organisation
Sing King
Location
City of London, London, United Kingdom
evolve us from our existing combination of backend and frontend systems into a new bespoke solution incorporating an API currently being developed in Python (FastAPI with PostgreSQL) and a web-app frontend in React.js or similar. WHAT YOU’LL DO ● Lead the CMS architecture, the heart of the creation ...

Machine Learning Engineer

Hiring Organisation
Intellect Group
Location
City of London, London, United Kingdom
vector databases, embeddings, or RAG pipelines Any open-source contributions, Kaggle competitions, or personal ML projects Exposure to MLOps tools and deployment workflows (Docker, FastAPI, etc.) What's on Offer £35,000 – £45,000 base salary depending on experience Roles across London and hybrid-friendly companies Fast-moving environments where ...

Founding Engineer

Hiring Organisation
Higher - AI recruitment
Location
City of London, London, United Kingdom
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 ...

Machine Learning Engineer

Hiring Organisation
Eames Consulting
Location
City of London, London, United Kingdom
concept implementations and deliver measurable outcomes. Familiarity with MCP frameworks or equivalent orchestration patterns, including structured context management and tool integration (e.g., FastMCP, FastAPI, LangGraph, LangChain). Strong understanding of LLM capabilities, limitations, and trade-offs, with practical experience mitigating hallucinations, latency, reliability, and cost challenges. Experience deploying and operating ...

LEAD PRODUCT ENGINEER

Hiring Organisation
Albert Bow
Location
City of London, London, United Kingdom
products Proven ability to make architecture decisions Comfortable in fast-moving, ambiguous environments Startup/founding engineer background Experience scaling early-stage products Python, FastAPI, React, TypeScript, LLMs, agent systems, Postgres, Redis, Kubernetes, GCP Why this role stands out: Real ownership and influence Profitable company → equity is meaningful Fast-moving ...

Software Engineer

Hiring Organisation
Burns Sheehan
Location
City of London, London, United Kingdom
from Principal Engineers and senior technical leaders The ideal Software Engineer will have commercial experience with Python and frameworks such as Django, Flask or FastAPI, alongside a genuine interest in building high-quality products and developing their technical craft. Software Engineer | Python Engineer | Backend Engineer | Software Engineer ...

AI Engineer/Developer

Hiring Organisation
Michael Page
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 - 75,000 Annual
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 ...

Full Stack Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
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 ...

Software Engineer

Hiring Organisation
Primis
Location
City of London, London, United Kingdom
compliance reporting, integrations with financial data providers and banking APIs, and the frontend dashboards that make that data actionable for clients. The Stack Python · FastAPI · Pydantic · React · Vite · Postgres · Redis · Vercel · Render · Kinde ✅ What they're looking for Strong Python development experience, particularly in data-intensive or financial applications Solid ...

Software Engineer

Hiring Organisation
Avyn
Location
City of London, London, United Kingdom
build a lead-generation pipeline, ship a CRM integration, design a network-visualisation interface, or improve our agentic dev flows. The backend is Python (FastAPI, Postgres) on GCP, and you'll be hands-on with deployments, CI/CD, and infrastructure. What we're looking for 2–4 years' experience ...

Full Stack Engineer

Hiring Organisation
SR2
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £95000/annum
through strong technical practice and communication Making pragmatic engineering decisions without overengineering everything into oblivion Tech stack: Frontend: Vue.js/TypeScript Backend: Python/FastAPI Cloud & Infrastructure: AWS/Azure, Terraform, GitHub Actions They are absolutely open to engineers from adjacent stacks. Strong product engineers are being considered if they ...

Artificial Intelligence Engineer

Hiring Organisation
Omnis Partners
Location
City of London, London, United Kingdom
safety, reliability) Shipping AI-driven products used in real-world enterprise settings Alongside this, you’ll stay close to the engineering fundamentals — Python backend (FastAPI/Django), infrastructure, and production deployment. Why people join environments like this: ✅ High talent bar across the team ✅ Direct access to founders and decision-makers ...

Software Engineering Manager

Hiring Organisation
Ethiq
Location
City of London, London, United Kingdom
retention, and partner with the founders on what the team builds and why. High ownership, high intensity, fast. The stack is Python and FastAPI on the backend, React and TypeScript on the frontend, Postgres, ElasticSearch and vector databases for data, and LLMs, agents and RAG across the AI layer. What ...

Data Scientist

Hiring Organisation
Russell Tobin
Location
City of London, London, United Kingdom
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 ...

Agentic AI Engineer

Hiring Organisation
Russell Tobin
Location
City of London, London, United Kingdom
LangChain, LangGraph, or similar frameworks Demonstrable experience building Agentic AI systems and AI agents Strong understanding of RAG architectures and LLM optimisation Experience with FastAPI, MCP/FastMCP, or similar technologies Familiarity with cloud-native AI deployments and data-driven applications Important Applications must clearly demonstrate hands-on Agentic ...