1 to 25 of 120 FastAPI Jobs in the UK excluding London

Senior AI-Driven Full-Stack Engineer (Java/Python)

Location
Scotland, United Kingdom
OpenAI APIs Prompt Engineering RAG (Retrieval Augmented Generation) LangChain/LangGraph AI Agents Vector Databases (FAISS, ChromaDB, Pinecone anyone they can learn and come) FastAPI-based AI services LLM Evaluation and Testing Nice to have React, Azure, AWS, Power BI, automation tools such as PowerApps, Power Automate. #J-18808-Ljbffr ...

GenAI Full Stack Engineer - Managing Consultant

Hiring Organisation
83zero Limited
Location
Manchester, North West, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£80,000
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 Limited
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£80,000
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 Fullstack Engineer

Hiring Organisation
Sanderson Government and Defence
Location
Bristol, South West, United Kingdom
Employment Type
Permanent Contract, On-site
Salary
£70,000
Security Check) Clearance or be eligible to obtain and maintain this level of clearance. Technical Expertise Backend Development Experience building microservices using Python with FastAPI, TypeScript with Express, or equivalent technologies. Frontend Development Experience developing React applications using TypeScript. Familiarity with frameworks such as Next.js, Vite, or similar. Generative ...

Senior Consultant - Agentic AI / Generative AI

Location
Manchester, England, United Kingdom
Redux, Zustand, Jest, Cypress.* Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery* Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django Channels, Flask, RESTful APIs.* Databases & Storage: PostgreSQL, MS SQL Server, MongoDB, Firestore, BigQuery, Azure Blob Storage.* Cloud & DevOps: Azure (App Services, OpenAI ...

Senior Consultant - Agentic AI / Generative AI

Location
Glasgow, Scotland, United Kingdom
Redux, Zustand, Jest, Cypress.* Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery* Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django Channels, Flask, RESTful APIs.* Databases & Storage: PostgreSQL, MS SQL Server, MongoDB, Firestore, BigQuery, Azure Blob Storage.* Cloud & DevOps: Azure (App Services, OpenAI ...

Senior Consultant - Agentic AI / Generative AI

Location
Newcastle upon Tyne, England, United Kingdom
Redux, Zustand, Jest, Cypress.* Build AI product UX patterns (streaming, review loops, provenance/citations, long-running tasks, error-recovery* Backend: Django (5.x+), DRF, FastAPI, Pydantic, Celery, Django Channels, Flask, RESTful APIs.* Databases & Storage: PostgreSQL, MS SQL Server, MongoDB, Firestore, BigQuery, Azure Blob Storage.* Cloud & DevOps: Azure (App Services, OpenAI ...

Digital Developer

Location
Exeter, England, United Kingdom
delivery. Key Responsibilities: Develop responsive and accessible applications using React, Next.js, and TypeScript. Design and maintain backend services and REST APIs using Python and FastAPI or Flask. Develop application functionality using Elasticsearch and other search or data services. Implement secure authentication and authorisation, including OAuth2 and Microsoft Entra ID integrations. ...

Software Developer II

Location
Norwich, England, United Kingdom
standards Produce and maintain clear technical documentation Qualifications Solid working knowledge of most of the following: Experience with Python frameworks (e.g. Flask, Django, FastAPI) Strong working knowledge of AWS services (e.g. Lambda, S3, API Gateway, DynamoDB, RDS Experience designing and building RESTful APIs and microservices Familiarity with infrastructure as code ...

Senior Full-Stack Developer (Bath Area)

Location
Bath, England, United Kingdom
like React Proficiency with writing maintainable Python and Typescript, including experience of working with relevant libraries for data processing and backend API development (i.e., FastAPI, Pydantic, expressJS, NodeJS, NextJS API Router, etc) Good understanding of cloud deployment Strong understanding and proven experience working with browsers and web APIs including HTML ...

Senior Software Engineer, Reference Data Platform (Python/Oracle) - AVP

Location
Belfast City District, Northern Ireland, United Kingdom
specifically with Master Reference Data, market data, instrument/counterparty reference data, or regulatory reporting systems. Experience with Python web frameworks and API design (FastAPI, Flask, or Django) for building internal data services and RESTful APIs. Familiarity with enterprise workload scheduling tools (e.g., Autosys, Airflow, Control-M) and enterprise messaging ...

Senior Software Engineer August 6, 2026

Location
Glasgow, Scotland, United Kingdom
design discussions, ADRs, process improvements, and workstream planning. What You’ll Bring Core Significant commercial software engineering experience. Strong Python, with production experience in FastAPI, Django, Flask, or similar. PostgreSQL fluency, schema design, query optimisation, and ORM frameworks such as SQLAlchemy/SQLModel. Commercial experience with TypeScript and React ...

Application Development Engineer - Python

Hiring Organisation
Morson Edge
Location
Bristol, South West, United Kingdom
Employment Type
Temporary Contract, On-site
Salary
£70 - 80 per hour
streaming systems, using technologies such as Kafka, RabbitMQ or WebSockets. • Experience designing and building REST and/or gRPC APIs, using frameworks such as FastAPI, Flask or Django. • Hands-on experience with Docker and Kubernetes, including deploying, scaling and debugging services in clusters. • Familiarity with CI/CD tooling ...

Software Engineer – Global Investment Research – Vice President Goldman Sachs

Location
Birmingham, England, United Kingdom
7+ years of hands‐on software engineering experience with proficiency in Java or Python , combined with modern full‐stack web technologies (e.g., React, TypeScript, FastAPI, Spring Boot). Bachelor’s degree in Computer Science, Software Engineering, Applied Mathematics, or a related quantitative field. Working knowledge of core AWS services, including ...

Senior AI Solutions Engineer - Technical Lead

Hiring Organisation
Randstad Digital
Location
Welwyn Garden City, South East, United Kingdom
Employment Type
Temporary Contract, Hybrid
Salary
£700 - £850 per day + Outside IR35
requirements into scalable cloud architectures and managing timelines, risks, and deployment roadmaps across multiple enterprise accounts . Python: Expert, production-quality Python (for example FastAPI, Pydantic, asyncio, pandas, pytest). R and R Shiny : Solid R and experience building and deploying Shiny applications. LLM and agent engineering: Hands-on experience ...

Software Engineer - Global Investment Research - Vice President

Location
Birmingham, England, United Kingdom
7+ years of hands-on software engineering experience with proficiency in Java or Python , combined with modern full-stack web technologies (e.g., React, TypeScript, FastAPI, Spring Boot). Bachelor’s degree in Computer Science, Software Engineering, Applied Mathematics, or a related quantitative field. Working knowledge of core AWS services, including ...

Platform Software Engineer

Location
Cambridge, England, United Kingdom
ZooKeeper, DB2, SQL Server, Postgres Ansible for configuration management Python Helpful, But Not Required Kubernetes AWS or Azure certification in one or more disciplines FastAPI, React, or TypeScript, for internal developer tooling and portals About i2 Group i2 Group is the global leader in advanced visual analysis solutions. We empower ...

Senior Software Engineer - Python New Exeter, Bristol

Location
Exeter, England, United Kingdom
reasonable responsibilities within your competence to support our growth. Required Skills & Experience: Significant industry experience in software development Proven experience building production APIs with FastAPI (or similar async Python frameworks) Experience with DevOps and MLOps Degree-level qualification in computer science or related field Professional experience with collaborative software development ...

Senior AI Engineer

Location
Manchester, England, United Kingdom
/function calling, Model Context Protocol, agent frameworks, and AI coding tools and agents. Engineering platform: Bitbucket, Jenkins (moving to Harness.io), Docker, Kubernetes, AWS , FastAPI or similar for internal services, and tracing/evaluation tooling. Particularly valuable: developer productivity or developer experience engineering, DORA-style measurement, platform engineering ...

Senior Software Engineer

Location
Oxford, England, United Kingdom
will be doing Systems and architecture (primary focus) Design, build and evolve backend services for high-availability, high-throughput workloads – currently Python and FastAPI, though the principles matter more than the framework. Own the design of well-versioned HTTP APIs: clear contracts, consistency, idempotency, backward compatibility, and documentation people ...

Python Developer - SC Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
Bristol, Gloucestershire, United Kingdom
Employment Type
Contract
Contract Rate
£65 - £70/day
latency, high-throughput systems Strong troubleshooting and root-cause analysis skills Experience with event-driven and streaming architectures (Kafka, RabbitMQ, WebSockets) API development using FastAPI, Flask or Django Hands-on experience with Kubernetes and Docker Strong understanding of concurrency, asyncio, multiprocessing and threading Solid software architecture and design skills Experience ...

Full Stack Developer Engineer - Cyber DevOps

Hiring Organisation
ECS
Location
South East, United Kingdom
Employment Type
Temporary Contract, On-site
Salary
Up to £450 per day + Outside IR35
Full Stack Developer Engineer - Cyber DevOps Rate: £450 (Outside IR35) Location: Remote Contract: 3-6 months Python | FastAPI | JavaScript | React | AWS We're looking for an experienced Full Stack Developer to join a growing Cyber DevOps team, developing innovative applications, automation and engineering tools used across Cyber Security and Network ...

Senior AI Solutions Engineer

Hiring Organisation
Randstad Digital
Location
City of London, South East, United Kingdom
Employment Type
Temporary Contract, On-site
Salary
£700 - £850 per day
4+ years in software, data, or ML engineering, including 2+ years building production LLM apps, RAG, or autonomous agents. Python: Expert-level production Python (FastAPI, Pydantic, asyncio, pytest, packaging). Agentic Frameworks: Hands-on experience with frameworks such as LangGraph, AutoGen, CrewAI, or native agent SDKs. Data & Cloud: Advanced ...

Senior AI Solutions Engineer

Location
Welwyn, England, United Kingdom
partner with IT, architecture, and security teams to ensure platform access and data privacy. Key Skills and Requirements: Proficiency in production-quality Python (e.g., FastAPI, Pydantic, asyncio, pandas, pytest). Experience with R and R Shiny for building and deploying applications. Hands-on expertise with LLM APIs (e.g., OpenAI, Anthropic ...

Senior AI Solutions Engineer

Hiring Organisation
Proclinical
Location
Welwyn, Hertfordshire, United Kingdom
Employment Type
Contract
partner with IT, architecture, and security teams to ensure platform access and data privacy. Key Skills and Requirements: Proficiency in production-quality Python (e.g., FastAPI, Pydantic, asyncio, pandas, pytest). Experience with R and R Shiny for building and deploying applications. Hands-on expertise with LLM APIs (e.g., OpenAI, Anthropic ...