1 to 25 of 30 FastAPI Jobs in Central London

Senior Python Engineer

Hiring Organisation
Method Resourcing Solutions Ltd
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 60,000 - 80,000 Annual
What We're Looking For Essential Professional Python development experience Strong understanding of software design patterns and engineering principles Experience with frameworks such as FastAPI, Django, or Flask Solid knowledge of RESTful APIs and distributed systems Experience working with relational and NoSQL databases Strong testing experience (PyTest, unit, integration ...

Software Engineer (AI+Fullstack)

Hiring Organisation
83zero Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£45000 - £55000/annum benefits, perks, healthcare
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 ...

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 ...

Front End Engineer - AI

Hiring Organisation
Orion Innovation
Location
City of London, London, United Kingdom
years of experience in developing and deploying production-grade AI/ML or automation solutions Strong proficiency in Python , with hands-on experience using FastAPI , REST APIs, and background task orchestration Deep familiarity with agentic frameworks such as LangChain , LangGraph , CrewAI , ReAct , or similar Understanding of LLM orchestration , including prompt ...

Lead Software Engineer

Hiring Organisation
Foxley Talent
Location
City of London, London, United Kingdom
ship fast without losing stability. Setting the technical bar and mentoring the engineers around you. The stack Python on the backend (Django, Flask, FastAPI or similar). AWS, Terraform and Docker for infrastructure. SQL and NoSQL databases. Real time and in memory where it fits. AI and ML in production ...

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 ...

Senior Software Engineer

Hiring Organisation
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Location
City of London, London, United Kingdom
London | Hybrid | Tech for Good Location: London (hybrid) Salary: £80,000 to £95,000 + equity + benefits Tech stack: • Python (Django, Flask or FastAPI preferred) • React/TypeScript • AWS We’re partnered with a mission driven company using technology to support large scale environmental and operational projects ...

Mid & Senior Full Stack Engineers | Green Tech & AI | React.js / Node.js / TypeScript | London 2 Days Per Week | £50K - £120K+Equity

Hiring Organisation
Owen Thomas | B Corp™
Location
City of London, London, United Kingdom
apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL/PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Mid & Senior Full Stack Engineers | Green Tech & AI | React.js/Node.js/TypeScript | London 2 Days Per Week | £50K - £120K+Equity -> 2+ years commercial experience -> STEM Background ...

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 ...

Senior Software Engineer (Python/React)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
Salary: £70,000 - £160,000 + 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 ...

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 ...

Senior Full Stack Engineer

Hiring Organisation
Prolo
Location
City of London, London, United Kingdom
leverages graph databases, machine learning, and modern cloud infrastructure to deliver intelligent procurement and customer service solutions. Our stack includes: Backend Services : Python 3.13, FastAPI, async micro-services architecture Data Layer : Neo4j graph database, PostgreSQL, complex data modelling AI/ML : OpenAI integration, semantic search, conversational agents, unstructured data analysis … small team Adaptable : Comfortable with ambiguity and rapid iteration Mentoring: Able to mentor less-experienced Software Engineers. Nice-to-Have Qualifications Experience with FastAPI or similar async Python web frameworks Experience with Neo4j or other graph databases Experience with graph algorithms and network analysis Experience with Helm and Kubernetes operators ...

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 ...

Lead Software Engineer Python API - Fintech

Hiring Organisation
Client Server
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
good knowledge of cloud based services (they use GCP but AWS or Azure experience is fine) You have experience of building APIs, ideally FastAPI experience You have a good knowledge of CI/CD, testing and deployment You have a thorough understanding of Computer Science fundamentals such as OOP, Data ...

AI Research Engineer

Hiring Organisation
Wave Group
Location
City of London, London, United Kingdom
conduct independent, hypothesis-driven research Strong grounding in experimental design, statistical validation, quantitative evaluation Strong software engineering fundamentals in Python and backend frameworks like FastAPI, Flask, Django Hands-on experience working with ML/AI models (LLMs, NLP, simulation, or related areas) Comfortable working in ambiguity, where the right question ...

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 ...

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 ...

Python Developer

Hiring Organisation
RJC Group
Location
City of London, London, United Kingdom
change lifecycle to gather feedback and ensure successful delivery Key Requirements : Demonstrated commercial experience in Python development Experience developing Web APIs using Flask, FastAPI, Streamlit, or other leading Python frameworks Experience in Azure Cloud environments (AKS) Experience with streaming data (kafka, Azure Service Bus) This London based role offers ...

Python developer | Front Office Trading | £700 Inside | Hybrid, LDN | 6 Months Rolling

Hiring Organisation
VirtueTech Recruitment Group
Location
City of London, London, United Kingdom
pricing, risk, PnL). Translating desk problems into Technical Solutions. This Python developer will be using the full Python ecosystem: NumPy, pandas, SciPy, Plotly, FastAPI, but the desk expects you to go beyond the textbook stack. If you are interested in this Python role with good Front Office experience, please ...

AWS Solution Architect - Associate Manager

Hiring Organisation
Anson Mccade
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Kubernetes (EKS) Strong knowledge of API design and security (API Gateway, OpenAPI, OAuth2, JWT) Experience with cloud-native frameworks such as Flask or FastAPI Solid understanding of Kubernetes security, IAM, encryption, and CI/CD tooling Exposure to enterprise integrations and event-driven architecture patterns Why This Opportunity is Great ...

Principal Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
environments, diagnosed the problems, fixed them, and unlocked the next phase of growth. This is about scaling products, not just teams. Tech Stack: Python · FastAPI · React · TypeScript · GCP Salary: £190,000 - £270,000 + Equity Working Arrangements: 3 days per week in Central London office Why it might interest ...

Senior Python and LLM Developer

Hiring Organisation
Mphasis
Location
City of London, London, United Kingdom
agents and multi-agent workflows using LangChain, LangGraph, StateGraph, CrewAI, LlamaIndex , and similar frameworks 🔹 Develop scalable backend services and high-performance APIs using Python, FastAPI, HTTP, and gRPC 🔹 Create next-generation conversational AI platforms, chatbots, and virtual assistants through advanced prompt engineering and agent orchestration 🔹 Integrate AI applications with … implementing RAG (Retrieval-Augmented Generation) solutions ✔ Strong expertise in: Prompt Engineering Conversational AI NLP Applications AI Agent Development ✔ Experience building scalable APIs using FastAPI ✔ Strong understanding of: HTTP & gRPC Docker & Kubernetes MLOps & AI Deployment Cloud AI Services (AWS, Azure, or GCP) ✔ Experience deploying production-grade AI solutions on enterprise platforms ...