Fastapi Python Developer Jobs in UK

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Quantitative Developer – High Performance Trading (C++/Python) – Hybrid London

An elite algorithmic market making firm is seeking a talented Quantitative Developer to join their highly technical team in London. The role involves developing high-performance trading platforms and implementing quantitative models. Candidates should have experience with C++ or Python, strong system design skil ...

Senior Python Developer Hybrid UK (3 days in office)

A leading technology firm in Bromley is seeking a highly skilled Mid-Senior level Python Developer to join their team. You will develop robust applications and leverage your expertise in Python, SQL, and Linux. The role requires strong leadership and communication skills, along with experience in Agile developme ...

Senior Python Developer Azure Scaling AI Platform. £90K. REMOTE

Overview Senior Python Developer with Azure experience and a footing with AI – UK Remote, up to £90,000. Role at Neologik. At Neologik.ai, we’re building an AI-driven platform on Azure to help companies deploy intelligent agents, automate workflows, and scale innovation. Base pay ra ...

Python Quant Developer — Hybrid (London) for High Impact Trading

Durlston Partners is seeking a Python Quant Developer in London. The role involves developing and maintaining a quantitative research environment for a global investment management fund. You will work on data acquisition, pricing of financial instruments, and enhancing existing systems with the goal of seeing pr ...

Senior Front End/Python Developer Network Automation, Vice President

Job Description Networks as a Service (NAAS) is seeking a highly skilled senior level developer with network infrastructure experience add to our development team. Your goal is to deliver products to our global network team which will assist with the transformation to an automated netwo ...

Senior Front End/Python Developer Network Automation, Vice President

Job Description Networks as a Service (NAAS) is seeking a highly skilled senior level developer with network infrastructure experience add to our development team. Your goal is to deliver products to our global network team which will assist with the transformation to an automated netwo ...

Senior Front End/Python Developer Network Automation, Vice President

Job Description Networks as a Service (NAAS) is seeking a highly skilled senior level developer with network infrastructure experience add to our development team. Your goal is to deliver products to our global network team which will assist with the transformation to an automated netwo ...

Senior Front End/Python Developer Network Automation, Vice President

Job Description Networks as a Service (NAAS) is seeking a highly skilled senior level developer with network infrastructure experience add to our development team. Your goal is to deliver products to our global network team which will assist with the transformation to an automated netwo ...

AI Driven Backend Engineer — Cloud Native & Scalable

Faculty is seeking skilled engineers in Greater London to develop the cutting-edge AI platform, Frontier. This role emphasizes backend services and cloud infrastructure. You will collaborate with cross-functional teams to create scalable software solutions in Python while engaging in Agile practices. Ideal candi ...

Lead Python Backend Engineer for Climate Tech

trg.recruitment is hiring a Lead Backend Engineer to lead a small squad and own the technical direction in a climate-tech non-profit. This role is focused on developing scalable backend services using Python and FastAPI, tackling complex mathematical optimization challenges. With 7+ years of experience, you'll m ...

Senior Backend Engineer — Python APIs, Data, Hybrid

A technology-driven financial services firm in Greater London is seeking a Senior Backend Engineer to enhance their market-leading CLO product. The role involves leading projects, collaborating in cross-functional teams, and improving backend services. Ideal candidates will have substantial Python experience, es ...

AI Applied Engineer — Real‑Time PropTech & Automation

Plentific is looking for an AI Applied Engineer to enhance their property management platform through AI-powered features. The role involves developing and deploying solutions using FastAPI and Django, collaborating with cross-functional teams, and integrating advanced AI tools. Ideal candidates will have a stro ...

Senior Backend Engineer — Scalable APIs & Systems

A leading marketing firm in Greater London seeks a Senior Backend Engineer to design and develop scalable backend systems. You will write production-grade code, solve distributed systems challenges, and collaborate with cross-functional teams. The ideal candidate has expertise in Python and frameworks like FastA ...

Azure GenAI Engineer: RAG & Agent AI Pipelines

A leading tech consulting firm in the City Of London is seeking an experienced Azure GenAI Engineer to develop and scale intelligent applications. The role involves hands-on work with Azure's AI stack and modern frameworks, including Python and FastAPI. The ideal candidate will have expertise in AI/ML model deve ...

Azure GenAI Engineer: RAG & Agent AI Pipelines

A leading tech consulting firm in the City Of London is seeking an experienced Azure GenAI Engineer to develop and scale intelligent applications. The role involves hands-on work with Azure's AI stack and modern frameworks, including Python and FastAPI. The ideal candidate will have expertise in AI/ML model deve ...

Hybrid Python Senior Software Engineer

We are hiring a Senior Software Engineer to lead end-to-end feature development and architectural design. This role is built for a technical leader who prioritizes high-impact delivery over routine maintenance. Tech Stack Backend: Python, FastAPI, Ruby on Rails Frontend: React.js, Next. ...

Graduate Full Stack Engineer Fintech, Hybrid in Birmingham

Lovey is seeking a motivated Graduate Full Stack Engineer for their Birmingham office. This full-time, permanent position offers a salary between £30,000 to £35,000, ideal for recent graduates. You'll gain hands-on experience across backend and frontend development in a dynamic fintech environment, working with ...

Graduate Full Stack Engineer Fintech, Hybrid in Birmingham

Lovey is seeking a motivated Graduate Full Stack Engineer for their Birmingham office. This full-time, permanent position offers a salary between £30,000 to £35,000, ideal for recent graduates. You'll gain hands-on experience across backend and frontend development in a dynamic fintech environment, working with ...

Software Engineer (AI HealthTech) Up to £100k + Bonus + Equity FULLY REMOTE

Software Engineer (AI HealthTech) Client: AI HealthTech Scale‑Up – Backed by Top‑Tier Investors, Led by World‑Class Engineers Salary: Up to £100k + Bonus + Equity Location: Remote (UK‑based) with an optional Holborn office Respons ...

DevOps Engineer FULLY REMOTE US, CANADA, EUROPE based only

Job Description THIS IS A FULLY REMOTE ROLE -YOU MUST BE LOCATED EITHER IN THE US, CANADA or WESTERN EUROPEWe're seeking a versatile DevOps Engineer to help scale our infrastructure and operations. This is a wear many hats position perfect for someone who thrives i ...

DevOps Engineer FULLY REMOTE US, CANADA, EUROPE based only

Job Description THIS IS A FULLY REMOTE ROLE -YOU MUST BE LOCATED EITHER IN THE US, CANADA or WESTERN EUROPEWe're seeking a versatile DevOps Engineer to help scale our infrastructure and operations. This is a wear many hats position perfect for someone who thrives i ...

Technical Architect

Role: Technical Architect - Python Job Type: Permanent Location: Bradford Mode: Hybrid (3 days in office) Responsibilities Lead the design and architecture of complex Python applications, considering scalability, performance, a ...

Technical Architect

Role: Technical Architect - Python Job Type: Permanent Location: Bradford Mode: Hybrid (3 days in office) Responsibilities Lead the design and architecture of complex Python applications, considering scalability, performance, a ...

Senior AI Architect & Tech Lead — Scalable AI Platforms

Brio Digital is seeking an experienced AI Architect / Technical Lead to drive the technical vision in enterprise AI and software systems. The role demands deep expertise in Python (Django, FastAPI) and modern frontend technologies such as React. Key responsibilities include designing scalable systems and leading ...

Product Engineer – Full‑Stack (React/Python) with Equity

Jack & Jill is seeking a Product Engineer in London to join a high-growth startup focused on creating innovative solutions for enterprise software deployment. The role involves designing intuitive user experiences, direct user engagement, and owning the entire lifecycle of product features. Ideal candidates will ...

Senior Backend Engineer for DAG‑Driven Orchestration

Jack and Jill AI is seeking a Senior Backend Engineer to design an orchestration layer for deploying autonomous technology in heavy industries. You will build integrations using Python and FastAPI, ensuring platform reliability through CI/CD pipelines. This role offers a chance to directly influence the architec ...

Remote AI Engineer & Technical Product Owner

A leading tech company based in the United Kingdom is seeking an AI Engineer (Technical Product Owner) to help build an internal tool for Meta ads. This role combines product thinking with backend engineering, focusing on designing the system and collaborating with founders to drive growth. Ideal candidates will ...

Senior Backend Engineer, AI & Robotics Platform

Oxford Dynamics, located in Oxford, is seeking an experienced Backend Engineer to design and implement scalable backend services using Python and FastAPI. The role requires developing secure REST APIs and supporting event-driven architectures. With 5+ years of experience, you will play a vital role in cross-func ...

Senior AI Software Engineer Python/React (Hybrid)

Oliver Bernard is seeking a Senior Software Engineer to join a prestigious AI startup in London. The role offers flexible working arrangements, ideally with 2-3 days in the office. You will be part of an elite engineering team building impactful software using cutting-edge technologies, including Python, Flask, ...

Senior Backend Engineer — Architect Scalable Microservices

A leading global marketing firm in Greater London seeks a Senior Backend Engineer to design and develop backend systems across its platform. In this hands-on role, you'll implement scalable and secure services, ensuring high engineering standards. Ideal candidates will have expertise in Python, FastAPI, and clou ...

Hybrid Python Senior Software Engineer

We are hiring a Senior Software Engineer to lead end-to-end feature development and architectural design. This role is built for a technical leader who prioritizes high-impact delivery over routine maintenance. Tech Stack Backend: Python, FastAPI, Ruby on Rails Frontend: React.js, Next. ...

Senior Backend Engineer — AI Powered Microservices & LLMs

Weekday AI is seeking a Senior Backend Engineer to build and scale intelligent backend systems for AI-driven applications in London. You'll design robust APIs, create scalable microservices, and integrate advanced AI capabilities like Large Language Models. Collaborating with cross-functional teams, you'll focus ...

GenAI Engineer for the Microsoft GenAI Stack

Avanade is seeking a highly skilled Agentic AI Engineer to develop and deploy cutting-edge generative AI solutions within the Microsoft ecosystem. The ideal candidate will have a strong software development background with expertise in Python and experience in API development using FastAPI, Flask, or Django. Fam ...

Full Stack AI Engineer — Build End to End PE Insights

A leading AI firm in Greater London is looking for a full stack engineer to contribute to all layers of the application. The role involves shipping features that users care about and participating in product strategy sessions. Ideal candidates will have experience with Python, FastAPI, and React, and a passion f ...

Data Systems Engineer — Python APIs & Analytics

Stars Arena is seeking a Software Engineer specializing in data services in London, United Kingdom. The ideal candidate will have extensive experience in Python frameworks such as Django and FastAPI, alongside strong skills in designing and maintaining RESTful APIs. Familiarity with Python’s data ecosystem, incl ...

AI Research Platform Engineer – Full‑Stack & Cloud (Hybrid)

Experis UK is seeking a Software Engineer for an AI Research Platform in Cambridge. This hands-on role involves building and maintaining backend services, developing frontend features, and managing cloud infrastructure. Ideal candidates have strong experience with Python, FastAPI, React, and cloud technologies l ...

Senior Backend Orchestrator for AI Driven Deployments

Jack & Jill is seeking a Senior Backend Engineer in London to build the orchestration layer for autonomous technology deployment. You'll develop and maintain backend systems using Python and FastAPI, ensuring system reliability and working with the CTO on product requirements. This is an opportunity to shape the ...

Senior Backend Architect: Distributed Systems (Remote)

Publicis Groupe is looking for a Senior Backend Engineer in Greater London to lead backend system design and development for OneSuite. The ideal candidate should have solid experience in backend engineering, especially with Python and FastAPI, and contribute to building scalable, reliable systems. The role empha ...

Senior AI Software Engineer Python/React (Hybrid)

Oliver Bernard is seeking a Senior Software Engineer to join a prestigious AI startup in London. The role offers flexible working arrangements, ideally with 2-3 days in the office. You will be part of an elite engineering team building impactful software using cutting-edge technologies, including Python, Flask, ...

Full Stack AI Engineer — Build End to End PE Insights

A leading AI firm in Greater London is looking for a full stack engineer to contribute to all layers of the application. The role involves shipping features that users care about and participating in product strategy sessions. Ideal candidates will have experience with Python, FastAPI, and React, and a passion f ...

Python Engineering Lead / Founding Engineer

Engineering Lead | Software Manager | Founding Engineer Python - Agentic AI - FastAPI - CI/CD Fully Remote (UK / Europe) A small and talented team of talented engineers & data scientists are quietly building something int ...

Web: Full Stack Tech Lead

Full-Stack Web Developer — React, FastAPI, Elasticsearch (AWS/GCP) About Clarity Clarity is redefining customer experience with AI. Our mission is to empower businesses to deliver faster, smarter, and more human service interactions. By combining cutting‑edge AI with intuitive design, w ...

Remote First Full Stack Tech Lead — Equity & Learning Budget

Full-Stack Web Developer — React, FastAPI, Elasticsearch (AWS/GCP) About Clarity Clarity is redefining customer experience with AI. Our mission is to empower businesses to deliver faster, smarter, and more human service interactions. By combining cutting‑edge AI with intuitive design, w ...

Web: Full Stack Tech Lead

Full-Stack Web Developer — React, FastAPI, Elasticsearch (AWS/GCP) About Clarity Clarity is redefining customer experience with AI. Our mission is to empower businesses to deliver faster, smarter, and more human service interactions. By combining cutting‑edge AI with intuitive design, w ...

Remote First Full Stack Tech Lead — Equity & Learning Budget

Full-Stack Web Developer — React, FastAPI, Elasticsearch (AWS/GCP) About Clarity Clarity is redefining customer experience with AI. Our mission is to empower businesses to deliver faster, smarter, and more human service interactions. By combining cutting‑edge AI with intuitive design, w ...

Senior Python Software Engineer

Senior+ Software Engineer - Python | FastAPI | AWS £90,000-120,000 + Bonus and Stock Flexible benefits | 90 day work-from-anywhere perk Remote first or hybrid (London) InsurTech | high traffic, scalable, event-driven, microservices development We’ve p ...

Senior Python Software Engineer

Senior+ Software Engineer - Python | FastAPI | AWS £90,000-120,000 + Bonus and Stock Flexible benefits | 90 day work-from-anywhere perk Remote first or hybrid (London) InsurTech | high traffic, scalable, event-driven, microservices development We’ve p ...

Senior Software Engineer

Overview Lead Talent Consultant at Addition+, helping shape the next generation of Military Defence capabilities! (Engineering and Technology) Role : Senior Software Engineer (Python - FastAPI) Location : London (hybrid) Package : Competitive salary + bonu ...

Senior Backend Engineer Remote, Python & Azure SaaS

A technology firm is seeking a Senior Backend Engineer to lead the design and implementation of core backend services for an Azure-based SaaS platform. This role emphasizes the creation of robust REST APIs, optimization of workflows, and maintenance of cloud infrastructure. Ideal candidates will possess over 6 y ...

Sr. Software Engineer | $100/hr

About The Job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey. Position: Software Engineer Type: ...

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    Fastapi Python Developer Jobs in United Kingdom Job Search Guide, Trends and Insights