Fastapi Python Developer Jobs in UK

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Principal AI Architect & VP — Hybrid, Scale AI Solutions

Citibank (Switzerland) AG in Greater London is seeking a Principal AI Software Engineer, Senior Vice President, to architect scalable backend systems for AI tools. The role demands advanced Python and FastAPI knowledge and includes responsibilities like driving AI initiatives and collaborating with cross-functio ...

Senior Backend Engineer, Fintech Data & ML Platform

Wave Group is seeking a Senior Software Engineer to be part of their cross-functional product team in Central London. You'll engage in backend-heavy engineering within a Python/FastAPI stack, taking ownership of code reviews, mentoring team members, and driving projects from an early stage. The company offers a ...

Senior Backend Engineer, Fintech Data & ML Platform

Wave Group is seeking a Senior Software Engineer to be part of their cross-functional product team in Central London. You'll engage in backend-heavy engineering within a Python/FastAPI stack, taking ownership of code reviews, mentoring team members, and driving projects from an early stage. The company offers a ...

Senior Backend Engineer, AI Platform & APIs

W Talent is looking for a talented Senior Backend Engineer to join our London team full-time. In this role, you will build and scale the core infrastructure of our AI platform, own backend systems, and influence product direction. The candidate should have over 5 years of software engineering experience, strong ...

Senior Python Backend Engineer — AI/LLM & Systems Lead

DeepRec.ai is seeking a hands-on software engineer in London to design and build scalable backend systems while integrating AI features. The role emphasizes coding and leadership, requiring 4-8 years of software engineering experience and strong Python skills. Applicants should have experience with APIs and fram ...

Principal AI Architect & VP — Hybrid, Scale AI Solutions

Citibank (Switzerland) AG in Greater London is seeking a Principal AI Software Engineer, Senior Vice President, to architect scalable backend systems for AI tools. The role demands advanced Python and FastAPI knowledge and includes responsibilities like driving AI initiatives and collaborating with cross-functio ...

Senior Backend Engineer Orchestration for Autonomous Tech

Jack & Jill is seeking a Senior Backend Engineer to join their innovative team, aimed at building a orchestration platform for autonomous technology deployment. This role requires significant experience with API design and backend systems, particularly in Python and FastAPI. You will have the opportunity to shap ...

Production Engineer: AI Infra, CI/CD & Observability

A leading tech firm in the UK seeks a skilled Production Engineer to spearhead groundbreaking projects that tackle the climate crisis with innovative technology. You will develop scalable infrastructure, enhance CI/CD pipelines, and ensure system health. The ideal candidate has expertise in infrastructure, CI/CD ...

Senior Backend Engineer — AI Platform Infrastructure

A leading AI workflow builder in the UK is seeking a Senior Backend Engineer to develop and scale infrastructure for financial services. The ideal candidate has over 7 years of experience in backend engineering, with expert Python and FastAPI knowledge. Responsibilities include designing robust backend systems a ...

Junior Backend Engineer: AI Driven SaaS for Critical Industries

A tech company focused on critical industries is seeking a Backend Engineer to join their team. The role involves building and maintaining backend features and API integrations using Python and FastAPI. Candidates should have at least 1 year of experience in backend engineering, with strong knowledge of SQL and ...

Principal AI Architect & VP — Hybrid, Scale AI Solutions

Citibank (Switzerland) AG in Greater London is seeking a Principal AI Software Engineer, Senior Vice President, to architect scalable backend systems for AI tools. The role demands advanced Python and FastAPI knowledge and includes responsibilities like driving AI initiatives and collaborating with cross-functio ...

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: ...

Software Engineer (Integrations)

Alpha is a leading language service provider (LSP), with a global presence and a commitment to delivering cutting-edge tech-driven solutions. We are seeking a highly skilled and motivated developer to join our team. This is an exciting opportunity to work on impactful projects, leveraging modern technologies ...

Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company

Our client is looking for a Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company.Must Have's:6+ years as full stack developerStrong proficiency with React and modern Ja ...

Software Engineer (Integrations)

Alpha is a leading language service provider (LSP), with a global presence and a commitment to delivering cutting-edge tech-driven solutions. We are seeking a highly skilled and motivated developer to join our team. This is an exciting opportunity to work on impactful projects, leveraging modern technologies ...

Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company

Our client is looking for a Sr. Software Engineer to Design, develop, and maintain full stack web applications using Python, Django, React and Next.js for a software company.Must Have's:6+ years as full stack developerStrong proficiency with React and modern Ja ...

Real Time AI Engineer for HealthTech & Multi Agent LLMs

Stott and May is looking for an experienced AI Engineer to join an industry-leading HealthTech start-up in the United Kingdom. In this permanent role, you will be responsible for end-to-end design, development, and optimization of multi-agent LLM systems. The ideal candidate will have experience building product ...

Graduate Full Stack Engineer (Python/React) Fintech Growth

targetjobs UK is seeking a motivated Graduate Full Stack Engineer to join its tech team in Birmingham. The role involves working on backend-focused tasks while contributing to frontend features using technologies like Python, FastAPI, Next.js, and TypeScript. Ideal candidates are recent graduates with a degree i ...

Lead Engineer at Blenheim Chalcot in London Django Software Foundation

Requirements Excellent stakeholder management experience is essential to being successful in this role. Technical Skills 5+ years of experience with React.js and/or Next.js 5+ years of experience with Node.js (Express.js, Fastify, etc) 3+ years of exper ...

Founding Backend Engineer for AI EdTech London (Equity)

Jack & Jill is seeking a Backend Engineer in London to architect and build a mission-critical platform using Python and FastAPI. This founding role allows you to shape the technical architecture of an early-stage AI EdTech startup, working with a technical founder on a product that already has an existing waitli ...

AI Software Architect — Real Time Property Tech Innovator

A leading proptech company in Greater London seeks an AI Applied Engineer to develop and deploy AI-powered features that enhance user interaction and operational efficiency. This role requires strong Python expertise with frameworks such as FastAPI and Django, experience in AI/ML applications, and skills in inte ...

Graduate Full Stack Engineer (Python/React) Fintech Growth

targetjobs UK is seeking a motivated Graduate Full Stack Engineer to join its tech team in Birmingham. The role involves working on backend-focused tasks while contributing to frontend features using technologies like Python, FastAPI, Next.js, and TypeScript. Ideal candidates are recent graduates with a degree i ...

Founding Full Stack Engineer – Equity in Enterprise AI

A tech startup seeks a Full Stack Engineer to transform a prototype into a production-grade enterprise SaaS platform. As the first full-time engineer, you will have significant equity and work closely with an expert founding team. Key responsibilities include building a secure backend, developing a user interfac ...

AI Software Architect — Real Time Property Tech Innovator

A leading proptech company in Greater London seeks an AI Applied Engineer to develop and deploy AI-powered features that enhance user interaction and operational efficiency. This role requires strong Python expertise with frameworks such as FastAPI and Django, experience in AI/ML applications, and skills in inte ...

Full Stack Engineer

Our client is a Financial Services organisation seeking an experienced Full Stack Developer to join their internal technology function. The role will focus on designing, building, and supporting enterprise-grade applications, APIs, AI-driven services, and digital platforms across Microsoft Azure and modern ...

Lead Software Engineer

We’re looking for a Lead Software Engineer to take ownership of designing and delivering scalable, cloud-native systems. You’ll play a key role in shaping architecture, leading engineering efforts, and mentoring a high-performing team. This is a hands-on leadership position suited to someone who enjoys ...

Lead Software Engineer

We’re looking for a Lead Software Engineer to take ownership of designing and delivering scalable, cloud-native systems. You’ll play a key role in shaping architecture, leading engineering efforts, and mentoring a high-performing team. This is a hands-on leadership position suited to someone who enjoys ...

Senior Python Backend Engineer – Real Time IoT & AI

IC Resources is seeking an experienced Backend Engineer to join their innovative technology team in London. This role involves designing and developing large-scale backend architectures that process real-time data. Key technologies include Python (FastAPI), Postgres, and AWS. The ideal candidate will have a back ...

Senior Product Engineer – AI Data Platform (Hybrid)

A leading AI technology company in the UK is looking for a Senior Engineer to join their innovative team focused on building data-driven solutions. The role emphasizes product ownership and collaborative culture, offering a competitive salary of up to £120k. The ideal candidate will have a strong background in P ...

Senior Python Software Engineer

Senior+ Software Engineer - Python/Blockchain £80,000 - £150,000 + bonus + Equity (circa 60-75% of salary) Python, Blockchain, FastAPI, AWS, Kubernetes Hybrid (Central London - 2-3 days a week) Profitable Gov/SecTech Blockchain Scale up High-trust work with ...

Back End Developer

Back End Engineer Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Company: Tiro Partners Limited About the Role This startup is building a cutting‑edge platform to transform how engineers design physical ...

AI Developer

AI DeveloperJob Type: Full-Time, PermanentLocation: Reading, hybrid working arrangements, 3 days a week onsite. Hours: Monday to Friday, 37.5 hours per weekSalary: Competitive, dependent on experienceAn excellent new opportunity for a hands-on AI Developer efficient with coding, AI & DevO ...

Full Stack Engineer

Overview Join us as a Full Stack Web Application Developer In this key role, you’ll lead and collaborate with multiple stakeholders to design, build and deliver solutions to internal customers You’ll be partnering with the business and technical stakeholders, driving out hig ...

Full Stack Engineer

Overview Join us as a Full Stack Web Application Developer In this key role, you’ll lead and collaborate with multiple stakeholders to design, build and deliver solutions to internal customers You’ll be partnering with the business and technical stakeholders, driving out hig ...

Graduate Full Stack Software Engineer

Lovey | Tech Department Lovey: Helping businesses access the funding they need to grow About Lovey: At Lovey, we believe every business deserves access to the funding it needs to grow. Since 2016, we've helped thousands of UK companies secure finance through technology that makes the proces ...

Graduate Full Stack Software Engineer

Lovey | Tech Department Lovey: Helping businesses access the funding they need to grow About Lovey: At Lovey, we believe every business deserves access to the funding it needs to grow. Since 2016, we've helped thousands of UK companies secure finance through technology that makes the proces ...

Backend Web Developer

Get AI-powered advice on this job and more exclusive features. Direct message the job poster from Ultralytics Overview At Ultralytics, we relentlessly drive innovation in AI, building the world's leading YOLO models. We're looking for passionate individuals obsessed with AI, eager to ...

Software Engineer (AI Platform) London

Software Engineer - London £80k base + meaningful EMI equity About Revax Revax is building a new class of AI-native software for tax advisory teams. Today, advisers lose entire days to researching and drafting advice - fragm ...

Software Engineer (AI Platform) London

Software Engineer - London £80k base + meaningful EMI equity The full job description covers all associated skills, previous experience, and any qualifications that applicants are expected to have.About Revax Revax is bu ...

Senior Software Engineer | ML Infrastructure in London SoCode Recruitment

Ownership of Cloud Infrastructure Kubernetes, Terraform, CI/CD pipelines Build Clean, Modern Dashboards and Analytics Tools Using React or similar Lead on System Design, Performance Tuning, and Reliability What We're Looking For ~5+ years of professional... < ...

Python Engineering Lead / Founding Engineer

Engineering Lead | Software Manager | Founding Engineer Are you the right applicant for this opportunity Find out by reading through the role overview below.Python - Agentic AI - FastAPI - CI/CD Fully Remote (UK / Europe) ...

Lead Engineer at Blenheim Chalcot in London Django Software Foundation

RequirementsExcellent stakeholder management experience is essential to being successful in this role.Technical Skills5+ years of experience with React.js and/or Next.js5+ years of experience with Node.js (Express.js, Fastify, etc)3+ ...

Full Stack Engineer

About 9fin 9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion. Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a ...

Staff Software Engineer (React/Typescript) | Global AI Infrastructure Business | £150k + equity

Staff Software Engineer (React / TypeScript) London (Hybrid working model) £120k - £160k + 20% bonus + impressive equity options We’re partnering with a high-growth, product-led technology company building a next-generation platform at the intersection of AI, data, and enginee ...

AI/ML Engineer

At StarCompliance, we build software that supports critical compliance needs for global clients. AI is now a core capability within our platform, embedded directly into our products and services. We are seeking a Senior AI Engineer to design, build, and scale AI-powered features within the Star pla ...

Senior AI Product Engineer

AtStarCompliance, we build software that supports critical compliance needs for global clients. AI is now a core capability within our platform, embedded directly into our products and services. We are seeking a Senior AI Engineer to design, build, and scale AI‑powered features within the Star plat ...

Junior Java Developer Python, Ruby, Fintech50 in London Quant Capital

Job Opening: Junior Java Developer Location: London Salary: £45,000-50,000 + bonus Quant Capital is urgently seeking a Junior Java Developer to join our high profile client. Our client is an established financial data technology startup, addressing challenges within the ...

Senior Python Developer – Energy Trading (Front Office) £700pd (Inside IR35)

We’re working with a front-office energy trading firm looking to hire a strong Python developer to sit close to the business and support trading activities. This is a high-impact role focused on data modelling, analytics, and direct interaction with traders. Key Responsibilities Des ...

Backend Mobile App Developer (Python, Django) in London Rise Technical

Backend Mobile App Developer (Python, Django) London, United Kingdom Tech Stack Frontend Django Framework Frontend Development Python Mobile Backend Candidate Requirements The ideal candidate will have at least 1 year's experie ...

Graduate Developer Trading Systems C++ / Python in London Quant Capital

Graduate Developer – Trading Systems (C++ / Python) Location: London, United Kingdom Posted: 10 months ago Quant Capital is urgently looking for a graduate developer to join our high-profile client. We seek graduates or junior engineers keen on trading development. Tech S ...

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