1 to 25 of 35 Contract FastAPI Jobs in the UK

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 ...

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 ...

Full Stack Engineer

Hiring Organisation
ISR RECRUITMENT LIMITED
Location
Nationwide, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £525/day (Outside IR35)
infrastructure, taking features from initial refinement through to production. Skills and Experience: Strong hands-on React, TypeScript/JavaScript and Python/FastAPI development skills. Experience building REST APIs, microservices and secure authentication using OAuth2, OpenID Connect and JWT. Practical AWS experience, including IAM, monitoring, secrets management and serverless ...

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 Resource Group Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450/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 ...

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 Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £850/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 ...

Machine Learning and AI Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £686/day
deployment) - should be able to show practice of commit early and deploy often Preferred qualifications: Demonstrated experience of Python backend development (e.g. using FastAPI) Demonstrated experience with biological or scientific data (e.g. genomics, transcriptomics, proteomics), or pharmaceutical industry experience Knowledge of AI/ML approaches and deployment of AI/ ...

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 ...

Data Engineer - Document & Retrieval Pipelines - Contract

Hiring Organisation
VIQU IT
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £650/day
pipelines so changes ship reliably Essential Requirements • Clearance: Active SC clearance • Python: Strong Python, with experience building and testing data pipelines and APIs (FastAPI, PyTest) • Unstructured document ingestion: Extracting clean text from PDF, DOCX and HTML, including layout-aware parsing (headings, tables, multi-column pages) • RAG retrieval pipelines: Chunking strategy ...

AI Software Engineer

Hiring Organisation
Eutopia Solutions Limited
Location
Andover, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£70,000
requests, code reviews and continuous integration. Ability to translate business requirements into secure, reliable and supportable technical solutions. Desirable experience: JavaScript, TypeScript, React, Flask, FastAPI, cloud-hosted environments, Docker, CI/CD pipelines, message queues, event-driven architecture, building workflow automation, internal applications and business system integrations, AI-assisted development ...

AI Engineer - Python

Hiring Organisation
Run-Time Group Ltd
Location
South West London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
Degree in Comp Sci or STEM subject from a Top ranked University 1 - 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, AWS DevOps tools: Kubernetes, Docker,Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams Passion for automation and data ...

Senior Data Scientist

Hiring Organisation
Data Careers
Location
South East London, South East, United Kingdom
Employment Type
Permanent Contract, Remote
Salary
£70,000
skills and a collaborative approach. Desirable Experience Data engineering technologies such as Databricks, PySpark or Spark. Cloud platforms, particularly AWS. Python frameworks such as FastAPI and PyTorch. Experience developing APIs and data pipelines. Infrastructure as Code, CI/CD and containerisation. Hands-on experience with LLMs, RAG, embeddings or generative ...

Senior AI Platform Engineer - MCP AWS Agentic AI

Hiring Organisation
Method-Resourcing
Location
South East, United Kingdom
Employment Type
Temporary Contract, Hybrid
service integration, authentication, authorisation and secure software development. Experience taking ownership of complex engineering projects, making architectural decisions and mentoring other engineers. Desirable: Python, FastAPI, LangGraph, LangChain or similar AI frameworks. JSON-RPC, SSE, WebSockets and event-driven architectures. Experience with RAG, LLM function calling and context management. An interest ...

Engineering Team Lead AI Python

Hiring Organisation
Client Server
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Remote
close to the code while supporting your team to deliver. You'll drive cloud first engineering across an Azure based platform, using Python/FastAPI, React/TypeScript, PostgreSQL, MongoDB and a multi-provider LLM stack including OpenAI, Gemini and Anthropic. You'll champion high quality, scalable and cost effective ...

Python Software Engineer - Fintech

Hiring Organisation
Run-Time Group Ltd
Location
London, United Kingdom
Employment Type
Permanent Contract, Full Time, Hybrid
Salary
£90,000
class - 2;1 Degree in Comp Sci or STEM subject from a Top ranked University 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, AWS DevOps tools: Kubernetes, Docker, Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams Passion for automation ...

Python Software Engineer - Fintech

Hiring Organisation
Run-Time Group Ltd
Location
South West London, South East, United Kingdom
Employment Type
Permanent Contract, On-site
class - 2;1 Degree in Comp Sci or STEM subject from a Top ranked University 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, AWS DevOps tools: Kubernetes, Docker,Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams Passion for automation ...

Senior AI Engineer - Perm - London

Hiring Organisation
INFUSED SOLUTIONS LIMITED
Location
South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
Salary
£75,000
development experience. Experience productionising Machine Learning, NLP or Generative AI models. Strong experience designing and building RESTful APIs and microservices using frameworks such as FastAPI , Flask or Django . Strong SQL skills with experience designing performant relational database solutions. Commercial experience with AWS and/or Azure cloud platforms. Experience … functional teams. Desirable Experience Experience with any of the following would be highly advantageous: Large Language Models (LLMs) Amazon Bedrock Azure AI Foundry PyTorch FastAPI Knowledge Graphs Kubernetes Docker Infrastructure as Code MLOps Event-Driven Architecture Vector Databases Retrieval-Augmented Generation (RAG) Technology Stack Python SQL FastAPI PyTorch Docker Kubernetes ...

Python Developer - Inside IR35 - Up to £700 per day - Hybrid

Hiring Organisation
Hunter Bond
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
Beacon or similar) Strong SQL and large-scale data handling expertise Pandas and NumPy for data processing and analytics REST API development using Flask, FastAPI or Django Strong understanding of performance optimisation and scalable systems Unix/Linux and Shell Scripting experience Domain Experience Investment Banking or Capital Markets background ...

Python Developer

Hiring Organisation
WRK DIGITAL LTD
Location
Leeds, Yorkshire, United Kingdom
Employment Type
Permanent Contract, On-site
Salary
£55,000
engineering role where you'll have the opportunity to work across backend development, large-scale data processing and cloud technologies. Technology Stack Essential Python FastAPI Pandas ETL Pipelines Docker Kubernetes Desirable Azure Databricks Angular Power BI Data Science or Machine Learning experience What They're Looking For Strong commercial Python ...

AI Platform Engineer - TypeScript AWS MCP Agentic AI

Hiring Organisation
Method-Resourcing
Location
South East, United Kingdom
Employment Type
Permanent Contract, On-site
Salary
£90,000
work collaboratively while taking ownership of technical challenges. Desirable experience: Hands-on experience building MCP servers, gateways or tool integrations. Python development, particularly FastAPI or similar frameworks. Experience with LangChain, LangGraph, LlamaIndex or comparable agent frameworks. LLM function calling, tool use and agent orchestration. API gateways, OAuth2, JWT and secure ...

Principal Software Engineer Python AI - FinTech

Hiring Organisation
Client Server
Location
City of London, South East, United Kingdom
Employment Type
Permanent Contract, Hybrid
have strong commercial software engineering experience, at Senior or Principal level You have expertise with Python development combined with experience using Django or FastAPI (happy to use Django going forward) You can lead the design and delivery of software products and take projects from initial concept through to production ...

L1 Software Engineer

Hiring Organisation
Response Informatics
Location
South East, United Kingdom
Employment Type
Contract
Contract Rate
GBP 250 Daily
Required Skills Frontend React.js REST API troubleshooting JavaScript/TypeScript basics Backend Python FastAPI REST APIs Postman/Swagger Cloud AWS (EC2, Lambda, S3, CloudWatch, API Gateway, IAM) Support Incident & ticket management (ServiceNow/Jira) Log analysis and application troubleshooting Qualifications Bachelor's degree in Computer Science, IT, or related ...