20 of 20 FastAPI Jobs in Central London

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 ...

AI Lead Engineer

Hiring Organisation
167 Solutions Ltd
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
training, testing and evaluation Prompt Engineering and AI workflow optimisation Programming & Frameworks Strong Python development skills PyTorch TensorFlow Scikit-Learn LangChain LangGraph Hugging Face FastAPI REST APIs Data Technologies SQL NoSQL Databases Data Modelling ETL Development Data Pipeline Engineering Vector Databases such as Pinecone, Weaviate or ChromaDB Cloud & DevOps Experience ...

Senior AI Engineer

Hiring Organisation
IO Associates
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
Up to £700 per day
vector databases (e.g., Pinecone, Qdrant, Milvus, Chroma). Software Fundamentals: Background in solid software engineering practices (Git, testing, design patterns, API development via FastAPI/Flask). Cloud Infrastructure: Experience deploying to secure cloud environments (AWS, Azure, or GCP) utilizing standard K8s distributions (EKS, AKS, GKE). Clearance Requirements Hold ...

Senior AI Engineer

Hiring Organisation
Cognizant
Location
City of London, London, United Kingdom
standards. Participate in code reviews and maintain documentation for backend services. Key skills and experience Hands-on experience with Python frameworks such as Flask, FastAPI, or Django. Proven experience building and maintaining RESTful APIs. Solid understanding of API design, security, versioning, and scalability. Python proficiency, LLM orchestration (RAG), and hands ...

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 Python Engineer AI/ML

Hiring Organisation
IT Recruitment Solutions
Location
City Of London, England, United Kingdom
Goffin at IT Recruitment Solutions now! Senior Python Engineer, AI/ML Engineer, Senior Python Developer, Artificial Intelligence, Machine Learning, LLMs, FastAPI, Permanent, London 1 day pe r week £90,000 - £110,000/year + good b enefits ...

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 ...

Artificial Intelligence Engineer

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
scalable AI workflows. The role focuses on building intelligent backend systems using LLM frameworks and cloud-native architectures. Key Responsibilities: • Develop RESTful APIs (FastAPI/Flask) for AI and agent-based systems • Design and implement agentic workflows using frameworks like LangChain, LangGraph, or similar • Integrate LLMs with enterprise systems ...

Python Engineering Lead - 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 ...

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 ...

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 ...

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 ...

Senior Data Engineer (GCP/Platform)

Hiring Organisation
ADLIB Recruitment | B Corp™
Location
City of London, London, United Kingdom
working cross-functionally Comfortable working in a start-up or scaling environment is a bonus Bonus points if you’ve worked with React, FastAPI, or in scientific or energy domains What you’ll get in return The role offers a salary of up to £100,000 DOE, alongside equity ...

Principal Technical Lead

Hiring Organisation
RSSB
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
RSSB are now seeking an experienced Principal Technical Lead to drive the hands-on technical delivery of a new greenfield industry services platform. This is an exciting delivery-focused role for a senior engineer who ...

Software Engineer

Hiring Organisation
Randstad Digital
Location
City of London, London, United Kingdom
engineer bridging the gap between research breakthroughs and production-ready capabilities to generate tangible business value. Build Robust Infrastructure: Develop enterprise-scale APIs (FastAPI) and architect comprehensive cloud-based AI infrastructure on AWS/Azure optimized for scalability and performance. Demonstrate Full-Stack Excellence: Apply your expertise across the entire … applications using LangChain and LangGraph (agent architecture design, state management, and graph-based workflow orchestration). ML & Cloud Ecosystems: Solid understanding of ML algorithms, FastAPI, PyTorch/TensorFlow, MLflow, MLOps practices, containerization (Docker, Kubernetes/AWS EKS), and cloud services (AWS Bedrock, SageMaker, Azure AI Search). Soft Skills: Excellent ...

Backend Software Engineer Python FastAPI SQL

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
Backend Software Engineer/Developer (Python FastAPI SQL Databricks) 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 … loan Employee Assistance Programme Impactful role with great career progression Apply now to find out more about this Backend Software Engineer/Developer (Python FastAPI Databricks Azure) opportunity. ...

Technical Lead

Hiring Organisation
Invitise Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
those in a tech lead or staff engineer role - Python and TypeScript/Node, with solid React/Next.js and NestJS/FastAPI experience - PostgreSQL, including schema design, query performance, ETL/ELT, and analytical workloads at scale - LLM/AI features shipped to production users, covering evals, guardrails, prompt … Tech Lead, Technical Lead, Staff Engineer, Principal Engineer, Private Credit, Private Markets, Capital Markets, AI Platform, Analytics Platform, Python, TypeScript, Node.js, React, Next.js, NestJS, FastAPI, PostgreSQL, pgvector, LangChain, LangGraph, LiteLLM, AWS, LLM, Fintech, Greenfield, Remote, Hybrid/Remote, Contract ...

Senior Back End Developer (Python/Azure)

Hiring Organisation
TXP
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day
Python-based services within a secure, enterprise environment. Focus on API development, system integration, and reliable delivery. Key Responsibilities Build backend services using Python (FastAPI) Develop APIs and integrate across disconnected systems Deploy solutions via Azure Function Apps Implement CI/CD pipelines (GitHub) Write and optimise SQL queries Contribute … secure design Clarify requirements, identify gaps, and shape solutions Support delivery and manage client expectations C# and .Net Skills Skills & Experience Strong Python + FastAPI experience Hands-on delivery background Azure (Function Apps essential) DevOps/CI-CD (GitHub) Solid SQL (querying, not DBA) Architecture awareness (security, scalability) Strong communication ...