1 to 25 of 220 Permanent FastAPI Jobs in the UK

AI Engineer

Hiring Organisation
Cerberus Capital Management
Location
London Area, United Kingdom
performance monitoring. Experience collaborating with engineering teams to ensure scalable and maintainable deployment. Backend & service development: Experience building production-grade Python webservices (e.g., FastAPI, Flask), developing APIs, and integrating ML components into broader systems. Software engineering practices: Comfortable with testing, code reviews, CI/CD pipelines, and version control ...

AI Engineer

Hiring Organisation
Cerberus Capital Management
Location
City of London, London, United Kingdom
performance monitoring. Experience collaborating with engineering teams to ensure scalable and maintainable deployment. Backend & service development: Experience building production-grade Python webservices (e.g., FastAPI, Flask), developing APIs, and integrating ML components into broader systems. Software engineering practices: Comfortable with testing, code reviews, CI/CD pipelines, and version control ...

GenAI Full Stack Developer (SC Cleared/Eligible)

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Permanent
Salary
£85,000
public services and deliver real impact. What You'll Do Develop GenAI applications using frameworks like LangChain, LangGraph, CrewAI . Build microservices with Python (FastAPI) or TypeScript (Express) . Create front-end solutions using React, TypeScript , and modern frameworks like Next.js . Integrate LLMs (OpenAI, Anthropic, Mistral) and vector databases ...

GenAI Full Stack Developer SC Cleared/Eligible

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £88,000 per annum, OTE
public services and deliver real impact. What You'll Do Develop GenAI applications using frameworks like LangChain, LangGraph, CrewAI . Build microservices with Python (FastAPI) or TypeScript (Express) . Create front-end solutions using React, TypeScript , and modern frameworks like Next.js . Integrate LLMs (OpenAI, Anthropic, Mistral) and vector databases ...

GenAI Full Stack Engineer - Consultant / Senior Consultant

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£70,000
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 ...

GenAI Full Stack Engineer - Consultant / Senior Consultant

Hiring Organisation
83zero Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £70,000 per annum
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 ...

GenAI Full Stack Engineer - Managing Consultant

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£85,000
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 ...

GenAI Full Stack Engineer - Managing Consultant

Hiring Organisation
83zero Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £85,000 per annum
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 ...

Generative AI Engineer

Hiring Organisation
83zero
Location
London Area, United Kingdom
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 ...

Generative AI Engineer

Hiring Organisation
83zero
Location
City of London, London, United Kingdom
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 Developer

Hiring Organisation
Reed
Location
Holborn, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum, Inc benefits
years of commercial software development experience. Proven success in high-performing engineering teams within fast-paced environments. Deep expertise in: Python (Django, Flask, or FastAPI) PostgreSQL (design, optimisation, maintenance) Containerisation (Docker/Kubernetes) Event-driven architecture (Kafka/RabbitMQ) Desirable experience includes: TypeScript/JavaScript (NextJS, NodeJS, Tailwind) Terraform ...

AI Automation Engineer

Hiring Organisation
McCabe & Barton
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
integrating Appian with external systems via REST APIs, web services, and connected systems. API Development & Integration - Proficient in designing and building RESTful APIs using FastAPI, Flask, or Django REST Framework for exposing AI models and automation services. Experience with API authentication (OAuth, JWT), rate limiting, error handling, API documentation (Swagger ...

AI Automation Engineer

Hiring Organisation
McCabe & Barton
Location
Central London, London, United Kingdom
Employment Type
Permanent
integrating Appian with external systems via REST APIs, web services, and connected systems. API Development & Integration - Proficient in designing and building RESTful APIs using FastAPI, Flask, or Django REST Framework for exposing AI models and automation services. Experience with API authentication (OAuth, JWT), rate limiting, error handling, API documentation (Swagger ...

Full Stack Engineer

Hiring Organisation
Egregious
Location
Slough, Berkshire, UK
Employment Type
Full-time
Data Scientists, you will also implement novel frontend components to visualise data and support customer insight generation and decision-making. Skills Outstanding Python, FastAPI, asyncio and Postman/Insomnia Strong Git, Docker, Kafka, Kubernetes and Azure/AWS/GCloud Good understanding of Playwright, Selenium/Nodriver, Beautifulsoup Good React ...

Full Stack Engineer

Hiring Organisation
Egregious
Location
London, England, United Kingdom
Data Scientists, you will also implement novel frontend components to visualise data and support customer insight generation and decision-making. Skills Outstanding Python, FastAPI, asyncio and Postman/Insomnia Strong Git, Docker, Kafka, Kubernetes and Azure/AWS/GCloud Good understanding of Playwright, Selenium/Nodriver, Beautifulsoup Good React ...

Senior Full Stack Developer

Hiring Organisation
Glite Tech
Location
London Area, 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 databases. Experience with in-memory databases. Experience ...

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 databases. Experience with in-memory databases. Experience ...

Senior AI Engineer

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
Platform (GCP), with a strong focus on Vertex AI services. Build Scalable Backend Services: Develop secure, high-performance APIs and microservices using Python and FastAPI to integrate agentic systems into the wider enterprise architecture. Technical Skillset Requirements Core AI & Frameworks: Agentic Frameworks: Expert-level knowledge of agentic frameworks such ...

Senior AI Engineer

Hiring Organisation
HCLTech
Location
London Area, United Kingdom
Platform (GCP), with a strong focus on Vertex AI services. Build Scalable Backend Services: Develop secure, high-performance APIs and microservices using Python and FastAPI to integrate agentic systems into the wider enterprise architecture. Technical Skillset Requirements Core AI & Frameworks: Agentic Frameworks: Expert-level knowledge of agentic frameworks such ...

Python Developer

Hiring Organisation
mthree
Location
Glasgow, Scotland, United Kingdom
5+ years' Python backend development experience. Strong knowledge of SQL, REST APIs, authentication (OAuth, SAML), and design patterns. Experience with Flask/Django/FastAPI, SQLAlchemy, Git, and Agile/Scrum. Familiarity with microservices, distributed systems, and testing frameworks (e.g., PyTest). Excellent problem-solving and communication skills; degree ...

Python Developer

Hiring Organisation
Syntax Consultancy Ltd
Location
Leeds, West Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£70000 - £80000/annum to £80k (DOE)
drive development projects, and mentor junior developers. Leading the design + development of complex applications using Core Python, and web frameworks (-eg- Django, Flask, FastAPI). SQL Server database experience, including developing/optimizing SQL Server databases, data analysis, and efficient data storage/retrieval. Familiarity with AWS Cloud Services ...

Agentic AI Engineer – Microsoft Ecosystem

Hiring Organisation
Avanade
Location
England, United Kingdom
Foundry, and have at least one year of relevant experience. Strong software development background with proficiency in Python. Experience with API development using FastAPI, Flask, or Django. Knowledge of Docker and containerized deployments. Hands-on experience with LLM models such as OpenAI GPTs, Claude, Gemini, LLaMA, or Mistral. Expertise ...

DevOps Engineer

Hiring Organisation
Zeus® | AI-Powered Logistics
Location
City of London, London, United Kingdom
create or update your LinkedIn account to reflect your employment with Zeus Labs Our tech stack Languages/Frameworks: TypeScript, Angular, React, Express, Python (FastAPI) Testing: Jest (backend unit), planned Cypress + backend acceptance tests Data: PostgreSQL (TypeORM), DynamoDB, Valkey Architecture: SNS/SQS event-driven systems Infrastructure: Amplify ...

DevOps Engineer

Hiring Organisation
Zeus® | AI-Powered Logistics
Location
London Area, United Kingdom
create or update your LinkedIn account to reflect your employment with Zeus Labs Our tech stack Languages/Frameworks: TypeScript, Angular, React, Express, Python (FastAPI) Testing: Jest (backend unit), planned Cypress + backend acceptance tests Data: PostgreSQL (TypeORM), DynamoDB, Valkey Architecture: SNS/SQS event-driven systems Infrastructure: Amplify ...

Python Developer

Hiring Organisation
Propel
Location
Slough, Berkshire, UK
Employment Type
Full-time
Qualifications: ● 3+ years of experience in backend development. ● Strong proficiency in Python. ● Experience with microservices architecture and distributed systems. ● Familiarity with frameworks such as FastAPI (Python). ● Proficiency in working with databases like PostgreSQL, MySQL, MongoDB, or Cassandra. ● Experience in developing and consuming RESTful APIs. ● Knowledge of containerization and orchestration ...