9 of 9 Contract FastAPI Jobs in the UK excluding London

Python Developer - 6 months - Wokingham

Hiring Organisation
Hamilton Barnes
Location
Wokingham, Berkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 325 Daily
well-structured code. Develop and maintain RESTful APIs using OpenAPI/Swagger, Connexion, or FastAPI. Work with Python web frameworks such as Flask, Django, FastAPI, and Jinja2. Data, Analytics & Databases Perform data manipulation and analysis using tools like Pandas and NumPy. Design, query, and maintain both relational databases (eg, PostgreSQL ...

Senior Python Quant Developer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£800 - £900 per day
join on an initial 12-month contract basis. What you'll need to succeed : Extensive hands-on Python Development experience building REST APIs with FastAPI or similar. Strong quantitative background - must have. Strong experience with Pandas, NumPy, and/or SciPy. Good experience with time series or market data models. ...

AI Engineer - LLM & Agentic Systems

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £650 per day, Negotiable
problems. Owning delivery end-to-end - from initial exploration through to production deployment, integration and ongoing iteration. Working with MCP-style architectures (FastMCP/FastAPI) and LangChain/LangGraph or equivalent frameworks to build reliable, scalable systems. Integrating AI into products, APIs and core business workflows - with a sharp ...

Senior ML Platform Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £700 per day
real systems. Experience building or supporting high-throughput data pipelines and distributed or scalable infrastructure. Hands-on experience with web backends such as FastAPI and pragmatic frontend development using vanilla JavaScript. Confidence designing developer-friendly CLIs and operator tooling that are reliable and hard to misuse. Experience with containerisation ...

Technical Lead

Hiring Organisation
InvitISE Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
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 Technology x People
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per 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 ...

Senior ML Platform Engineer - Robotics

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £750 per day
deployment. The Role You will: * Own and extend internal web applications used for robot data collection, review, QA, and dataset publishing* Build and maintain FastAPI backends, vanilla JavaScript frontends, CLI tooling, and supporting services* Improve recording workflows, state machines, config validation, batch processing, stale-data recovery, and archival processes* Containerise … have: * Senior-level software engineering experience, ideally 5+ years* Strong production Python experience* Experience with typing, async/await, threading, multiprocessing, and concurrent workloads* FastAPI or another async Python web framework* Vanilla JavaScript, including DOM manipulation, fetch, and WebSockets* Experience building internal tooling, operator tooling, platform tooling, or workflow orchestration ...

Python Backend Engineer

Hiring Organisation
Daniel James Resourcing Ltd
Location
St. Albans, Hertfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
Up to £550/ day Outside IR35
working on systems that continuously ingest and process large volumes of operational and telemetry-style data from connected platforms and devices. Tech environment: Python FastAPI Azure Functions Azure Service Bus/Event Hub Kubernetes/AKS Docker Cosmos DB Distributed messaging systems Event-driven microservices Real-time processing pipelines What … resilience, retries, observability, scaling, and failure handling Engineers who still code heavily day-to-day Highly desirable: IoT, telemetry, or time-series style systems FastAPI Kafka/Service Bus/RabbitMQ/Event Hub Kubernetes Azure-native backend engineering This is a fast-moving contract process with a single technical ...

Software Engineer (SC Cleared)

Hiring Organisation
Experis
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Contract
Contract Rate
£520 - £580 per day + Inside IR35
Doing As a Software Engineer, you will: Develop user-facing applications, APIs, and backend services Build solutions using technologies such as: Python FastAPI React Enable the integration and operational use of AI and data-driven capabilities Contribute to scalable, cloud-native application development Your work is expected to span across … Innovation is prioritised over maintaining legacy systems What We're Looking For Strong experience in modern software engineering Hands-on development experience with Python (FastAPI) and/or React Experience building APIs, services, and user-facing applications Security Requirements Active SC (Security Check) clearance is require and you must ...