26 to 50 of 383 Permanent FastAPI Jobs

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 ...

Software Engineer - Data & AI

Location
Woking, England, United Kingdom
agile sprints, balancing exploratory R&D with production-grade delivery. Give honest estimates and flag scope risk early. What You'll Bring Python (FastAPI), Node.js, REST APIs. SQL and PostgreSQL. Redis/Valkey for session and WebSocket coordination at scale. Strong JavaScript/TypeScript, HTML5, CSS React (or equivalent), component ...

Senior Fullstack Engineer (Payments Experience)

Location
Greater London, England, United Kingdom
delivery. What You’ll Bring Track Record: 5+ years building high-performance, client-facing web applications. Backend Expertise: Deep hands-on experience with Python , FastAPI , PostgreSQL , Redis , and secure RESTful APIs. Frontend Proficiency: Mastery of TypeScript , React , Jest , and Storybook . (Experience with Micro-Frontends is a massive bonus). ...

Senior Full Stack/Native Cloud Engineer (Vice President)

Hiring Organisation
Jefferies Financial Group
Location
London, UK
Employment Type
Full-time
another complex enterprise technology environment. Advanced backend engineering experience with Java 8+, Spring Boot, and microservices-based architectures. Strong Python development experience, preferably with FastAPI or similar modern API frameworks. Proven experience designing and building cloud-native, distributed, scalable, and resilient systems. Hands-on experience with Kafka or similar event ...

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 ...

Senior Full-Stack Developer

Location
Greater London, England, United Kingdom
experience as a Full‐Stack Developer or Software Engineer working on complex applications. Advanced Python and TypeScript skills, with experience using frameworks such as FastAPI, Pydantic, Node.js, Express or Next.js. Strong React experience and confidence building sophisticated, user‐friendly front‐end applications. Strong SQL and database experience, including performance optimisation ...

Senior Software Engineer Python

Location
United Kingdom
environment, this role offers both autonomy and real impact. Requirements Backend Architecture & APIs (Primary Focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput workloads. Build well-versioned RESTful APIs aligned to OpenAPI/Swagger, with strong conventions for consistency, idempotency, and backward compatibility. ...

Senior Software Engineer Python

Hiring Organisation
MarkIT Placements
Location
Didcot, Oxfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
environment, this role offers both autonomy and real impact. Requirements Backend Architecture & APIs (Primary Focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput workloads. Build well-versioned RESTful APIs aligned to OpenAPI/Swagger, with strong conventions for consistency, idempotency, and backward compatibility. ...

Full Stack Engineer - Must be DV Cleared

Hiring Organisation
VIQU IT Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
partners and turning what they need into something buildable. What You Will Need Python. Serious commercial experience building back end services, APIs and tooling. FastAPI, Django, Flask, whichever you have used in anger. TypeScript. Serious commercial experience on modern front ends with React, Vue or Angular. Linux. Properly comfortable without ...

Senior Full Stack Software Engineer

Location
Greater London, England, United Kingdom
technology stack consists of: React Native mobile applications React web applications GraphQL layer using Apollo Server and Apollo Client Python services running Flask and FastAPI Kubernetes based microservice architecture running on Google Cloud Platform Cloud Postgres and Google BigQuery datastores with DBT data transformations Google PubSub and MQTT messaging Terraform ...

Polyglot Engineer (JS/Python/Go)

Location
Greater London, England, United Kingdom
JavaScript/TypeScript, Python, and/or Go, with the ability to rapidly learn new languages; Experience with modern frameworks across the stack (FastAPI, Gin, Express, etc.); Production experience with React, modern build tools, state management, responsive design, and accessibility standards; Comprehensive testing experience (unit, integration, E2E, security) and performance ...

Software engineer, generative AI (UK)

Location
Greater London, England, United Kingdom
architecture, RESTful APIs, cloud platforms such as AWS, GCP, or Azure, and containerization with Docker and Kubernetes Solid grasp of modern web technologies including FastAPI, Asyncio, database systems like PostgreSQL, and hands-on experience leveraging AI developer tooling like Claude, Cursor, or GitHub Copilot to accelerate your engineering workflows Exposure ...

Senior Full Stack Engineer

Location
Greater London, England, United Kingdom
improved UX WHAT WE’RE LOOKING FOR Solid experience with Python in a web application context. You have some experience with web frameworks like FastAPI, Django or Flask. We use FastAPI. Experience with Javascript/Typescript and a modern JS framework such as React, Angular or Vue.js. We generally ...

Senior Software Engineer (Machine Learning)

Location
West of England, England, United Kingdom
responsibilities within your competence to support our growth. Required Skills & Experience: Significant industry experience in (scientific) software development Proven experience building production APIs with FastAPI (or similar async Python frameworks) Strong working knowledge of modern machine learning — able to understand, integrate, and extend the functionality of an ML library (NumPy ...

Software Architect

Location
Greater London, England, United Kingdom
with Python and Django on a service‐oriented architecture deployed at scale on Kubernetes. The rest of the tech stack includes Django REST Framework, FastAPI, PostgreSQL, AWS, React.js, Docker, Redis, Celery, Pandas, NumPy, Git, Jenkins, and Elasticsearch. We put significant emphasis on design patterns, code readability, automated testing, maintainability ...

Senior Software Engineer - Backend

Hiring Organisation
Fitch Group
Location
Greater London, United Kingdom
Employment Type
Full Time
technical engineers. Demonstrated experience delivering enterprise-scale software platforms, APIs, and distributed systems. Strong proficiency in C++, Java (Spring Boot), and/or Python (FastAPI or similar), with the ability to guide engineering teams on architecture, design, and implementation. Experience designing, building, and supporting RESTful APIs and microservices-based architectures. ...

Junior Software Developer

Location
Greater London, England, United Kingdom
using React.js (frontend) and Node.js (backend). Build and integrate backend services and APIs using Python with a web framework (e.g. Django, Flask, or FastAPI). Design, query, and manage relational and NoSQL databases (PostgreSQL, SQL, MongoDB). Work on machine learning tasks including object detection, model training, and deployment. ...

AI & ML Systems Engineer

Hiring Organisation
Logix Resourcing
Location
Cambridge, Cambridgeshire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
Python, PostgreSQL (with PostGIS for spatial data), Redis, or time-series databases. API & Middleware Development: Experience building robust RESTful APIs and WebSocket pipelines (using FastAPI, Flask) for streaming low-latency data and alert triggers between processing backends and Front End applications. Experience with cloud platforms (eg, AWS, Azure ...

Fullstack Developer

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Permanent
backend-heavy role. Polyglot Proficiency: Strong commercial experience with Ruby (preferably Ruby on Rails) for web application development. Solid proficiency in Python (Django, FastAPI, or similar) with an understanding of data processing. Production experience or a strong foundational knowledge of Rust , particularly in building concurrent, memory-safe, and high-performance ...

Senior Python Engineer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£450.00 per day
cloud engineering, and language assessment. Key Skills & Experience: Strong commercial Python development experience, including object-oriented and functional programming. Strong experience with FastAPI, Pydantic, SQLAlchemy, Alembic, Pytest, and type checking. Experience with Pandas, NumPy, Jupyter, OpenTelemetry, Git/GitHub, GitHub Actions, and Docker. Experience developing microservices and/or Lambda ...

frontend developer for Physical AI

Location
Greater London, England, United Kingdom
complex datasets Experience integrating frontends with REST or GraphQL APIs Strong understanding of service-oriented architecture, data modeling, and Python web frameworks such as FastAPI, Flask, or Django Practical experience with PostgreSQL, Docker, Kubernetes, Sentry, Datadog, and OpenTelemetry Experience with unit, integration, and end-to-end testing, CI/ ...

Full Stack Developer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Experience of working in a Scrum Team and an Agile environment Design, build and support scalable and secure full-stack web applications using Python (FastAPI) Exposure to front-end development using React/Typescript. Support and enhance existing web applications to ensure stability and performance. Work with business and technical ...

Full Stack Developer

Hiring Organisation
Version 1
Location
Belfast, UK
Employment Type
Full-time
technology. QualificationsExperience of working in a Scrum Team and an Agile environmentDesign, build and support scalable and secure full-stack web applications using Python (FastAPI)Exposure to front-end development using React/Typescript. Support and enhance existing web applications to ensure stability and performance. Work with business and technical ...

Full Stack Developer

Hiring Organisation
Version 1
Location
Manchester, UK
Employment Type
Full-time
technology. QualificationsExperience of working in a Scrum Team and an Agile environmentDesign, build and support scalable and secure full-stack web applications using Python (FastAPI)Exposure to front-end development using React/Typescript. Support and enhance existing web applications to ensure stability and performance. Work with business and technical ...

Full Stack Developer

Hiring Organisation
Version 1
Location
Edinburgh, UK
Employment Type
Full-time
technology. QualificationsExperience of working in a Scrum Team and an Agile environmentDesign, build and support scalable and secure full-stack web applications using Python (FastAPI)Exposure to front-end development using React/Typescript. Support and enhance existing web applications to ensure stability and performance. Work with business and technical ...