17 of 17 Contract FastAPI Jobs in the UK

Python Developer - UK Remote Contract - Outside IR35

Hiring Organisation
Infused Solutions Ltd
Location
Nationwide, United Kingdom
Employment Type
Contract
/CD pipelines and automated testing Experience working within Agile delivery environments Strong problem-solving and debugging skills Desirable Experience Experience with FastAPI, Django, or Flask Exposure to event-driven architectures and messaging technologies Experience building data-intensive applications Knowledge of infrastructure-as-code practices Bonus Skills Any commercial ...

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 Full Stack Engineer (GCP, Python, JavaScript) Remote

Hiring Organisation
Exalto Consulting
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £410/day
performance within React. ● NodeJS/Express: Strong experience building and scaling server-side applications using Express. ● Python Expert: Strong experience building backend services using FastAPI and managing database migrations with Alembic. ● AI Tooling: Familiarity with integrating AI APIs (such as Codex or Claude) and using AI-assisted development workflows. ● Agile ...

MLOps Engineer

Hiring Organisation
Morson Edge
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - 800 per day + None
observability systems that enable our engineers to ship with confidence. Key Skills: - Solid programming skills in Python (plus experience with web libraries like FastAPI, Flask, or Django) - Hands-on experience with ML model deployment and monitoring in production Knowledge of containerization (Docker) - Experience with CI/CD pipelines and cloud ...

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. ...

Software Engineer & Cloud Operations Specialist - Node, AWS

Hiring Organisation
S Merrick LTD
Location
United Kingdom
Employment Type
Contract, Work From Home
operations environment At least 3 years production Node.js experience Frequent/daily Node.js backend/API development Production Python API development, ideally Flask or FastAPI 23+ years hands-on AWS infrastructure experience AWS services such as EC2, RDS, Elastic Beanstalk, Lambda, S3, ECR, IAM or CloudFormation Strong Docker/containerisation ...

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 ...

Python Engineer

Hiring Organisation
Teksystems
Location
South East, United Kingdom
Employment Type
Contract, Work From Home
Support Development on the front and back end Be able to work with changing and uncertain goals Essential Skills Working with data pipelines Python FastAPI Working in R&D Environments Additional Skills & Qualifications that may be beneficial Working with AI Models PhD Location Cambridge, UK Rate/Salary 300.00 - 300.00 ...

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 ...

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 ...

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
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 ...

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 ...

Data Engineer (GCP)

Hiring Organisation
Stott & May Professional Search Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £455 per day
Data Engineer (GCP) Start: ASAP Duration: 6 months Location: London (office based) Rate: up to £455 per day (inside IR35) We are looking for a Data Engineer to support the design and development of scalable ...