1 to 25 of 36 FastAPI Jobs in the City of London

Lead GenAI Full Stack Engineer / Managing Consultant

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£85,000
skills by exploring and experimenting with emerging technologies, including GenAI. Your skills and experience: Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity ...

Software Developer

Hiring Organisation
Osmosis Investment Management
Location
City of London, London, United Kingdom
unfamiliar territory Experience with cloud platforms, ideally Azure (Functions, Storage, SQL, identity) Highly proficient in Python Familiarity with Django Preferably API dev experience (eg FastAPI) Familiarity with C# (ideally both, but strong in one with willingness to learn the other works) Snowflake experience Experience with AI/ML services ...

AI Engineer

Hiring Organisation
83zero Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£55000 - £70000/annum
will design and develop full stack applications across both GenAI and traditional software projects. Required Skills and Experience Backend development using Python with FastAPI or TypeScript with Node.js or Express Experience building microservices architectures React and TypeScript front end development experience Familiarity with Next.js or Vite Experience with Generative ...

Generative AI Engineer

Hiring Organisation
83zero
Location
City of London, London, United Kingdom
architecture decisions, mentor junior engineers and help shape best practices across the engineering team. Required Skills and Experience Backend development using Python with FastAPI or TypeScript with Node.js or Express Experience building microservices architectures React and TypeScript front end development experience Familiarity with Next.js or Vite Experience with Generative ...

Application Engineer

Hiring Organisation
Aimtech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
Power BI) Python, JavaScript, TypeScript, Angular or React ASP.NET Core, Entity Framework, REST APIs, Swagger/OpenAPI SQL Server, PostgreSQL, NoSQL databases, vector databases FastAPI and AI service integrations (OpenAI, Claude, Gemini) Docker, Kubernetes (AKS), Azure App Services Azure DevOps, Azure Boards, CI/CD pipelines API Management, OAuth2 ...

Senior Full Stack Developer - 2 days a week in London - £60-80k

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
architecture decisions, delivery, and continuous improvement of engineering practices. Key Responsibilities Design and deliver scalable, secure web applications Build backend services using Python (e.g. FastAPI, Flask, or Django) Develop modern frontend applications using React and TypeScript Design and maintain RESTful APIs 5+ years’ experience as a full-stack developer ...

Front Office Python Developer

Hiring Organisation
Harrington Starr
Location
City of London, London, United Kingdom
culture What They’re Looking For Strong Python backend development experience in production environments (at least2 years) Experience building APIs using frameworks such as FastAPI, Flask or Django Good knowledge of at least one Python-compatible frontend framework Strong experience with AWS services and cloud-native development Understanding of event ...

Python Developer

Hiring Organisation
Roc Search
Location
City of London, London, United Kingdom
services • Developing real-time data pipelines and event-driven architectures • Supporting production systems and driving performance improvements 🛠️ Core tech & experience: • Strong Python expertise (Django, FastAPI) • Experience with REST APIs, WebSockets, and real-time data integration • Cloud-native development (Azure preferred) • CI/CD, automated testing, and production support • Hands ...

Back End Developer (DV Cleared)

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£75,000
features end-to-end in collaboration with cross-functional teams. Develop cloud-native and containerised applications using technologies such as Java (Spring Boot), Python (FastAPI), Node.js and modern datastores. Build solutions within an Agile and DevSecOps environment, embedding security and quality throughout the delivery lifecycle. Integrate backend services into ...

Fullstack Software Engineer (Agentic AI)

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
pipeline consuming other data products Basic qualifications: Demonstrated experience with frontend software development (e.g. React) Demonstrated experience of Python development (e.g. using FastAPI) Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience Cloud experience (e.g. Google Cloud and cloud run preferred) including core ...

Software Engineer (Frontend)

Hiring Organisation
Orchestra
Location
City of London, London, United Kingdom
challenges regularly We're united by our mission, focused execution, and speed We deploy to production multiple times a day 🛠️ Tech Stack Backend: Python (FastAPI) + Typescript (express) Frontend: React + Typescript Infrastructure: AWS (serverless!), terraform Containerisation: Docker Database: PostgreSQL + DynamoDB CI/CD: GitHub actions + Blacksmith runners ...

Sr Python Developer – Trading / Risk Platforms

Hiring Organisation
Crisil
Location
City of London, London, United Kingdom
handle complex queries and large datasets Experience with Python libraries (Pandas, NumPy) for data processing Experience building RESTful APIs/services (Flask/FastAPI/Django) Strong understanding of data structures and performance optimization Experience working with large-scale data processing and performance optimization Working knowledge of Unix/Linux ...

Full Stack Engineer

Hiring Organisation
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Location
City of London, London, United Kingdom
technical decisions as the platform evolves and scales Owning meaningful parts of the product rather than small isolated tickets Tech stack Backend: Python (FastAPI, Flask, or Django experience beneficial), Postgres Frontend: TypeScript, Vue 3 Cloud: Azure, GCP, or AWS experience a bonus You do not need to match this exactly. ...

Machine Learning Engineer

Hiring Organisation
Higher - AI recruitment
Location
City of London, Greater London, UK
communication skills and the ability to flourish in a team Located in London/Paris and open to working in office Tech Stack: Python FastAPI Python, Typescript, or React Open source LLMs Building for production Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare ...

Full Stack Engineer

Hiring Organisation
Higher - AI recruitment
Location
City of London, Greater London, UK
users Strong understanding of product development and navigating large codebases Located in London/Paris and open to working in office Tech Stack: Python FastAPI Typescript + React Open source LLMs On premise deployments Benefits Currently Offered (likely to improve as company grows): 100% coverage for travel expenses Childcare support ...

Lead Python Engineer

Hiring Organisation
Opto Talent
Location
City of London, London, United Kingdom
years of software engineering experience, ideally within AI, SaaS, or automation platforms. Strong experience building backend systems in Python. Experience with frameworks such as FastAPI, Flask, or Django. Experience working with APIs, data pipelines, and scalable systems. Familiarity with cloud infrastructure and microservices architectures. Experience with Git, CI/ ...

Senior Software Engineer

Hiring Organisation
Retelligence
Location
City of London, London, United Kingdom
Builder: You have experience in production environments and enjoy seeing your code solve tangible business problems. Stack Versatility: You are highly proficient in Python ( FastAPI ) and TypeScript ( React/Next.js ), with a solid grasp of SQL and GCP . Independent Execution: You are comfortable working with high levels of trust ...

Senior Software Engineer

Hiring Organisation
Retelligence
Location
City of London, London, United Kingdom
production-grade product features. Data & Pipelines: Experience building ingestion workflows and connecting disparate internal data sources. Stack Versatility: You are highly proficient in Python ( FastAPI ) and TypeScript ( React/Next.js ), with a solid grasp of SQL and GCP . The Profile The Practical Automator: You have a track record ...

Artificial Intelligence Engineer

Hiring Organisation
Omnis Partners
Location
City of London, London, United Kingdom
safety, reliability) Shipping AI-driven products used in real-world enterprise settings Alongside this, you’ll stay close to the engineering fundamentals — Python backend (FastAPI/Django), infrastructure, and production deployment. Why people join environments like this: ✅ High talent bar across the team ✅ Direct access to founders and decision-makers ...

Founding Engineer

Hiring Organisation
Omnam Investment Group
Location
City of London, London, United Kingdom
ability to execute independently in a fast-moving environment Skillset We Value Proficiency in Python, Typescript, or similar modern languages Experience with backend frameworks (FastAPI, Django, Node.js, Rails, etc.) Strong SQL, data modeling, and database design knowledge Familiarity with IaC, containers, CI/CD, and observability tools Bonus : experience ...

Senior Backend Engineer

Hiring Organisation
M-XR
Location
City of London, Greater London, UK
with the experience that defines how we do it. What you will do Design and implement user-facing APIs to support frontend user flows (FastAPI) Build robust user authentication, authorisation, and account management (Auth0) Integrate payment processing and subscription management (Stripe) Design and manage user databases and data models (MongoDB ...

Software Engineer (Python/React)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
Salary: £50,000 - £85,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used ...

Full Stack Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
Salary: £60,000 - £85,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used ...

Senior Full Stack Engineer - Remote

Hiring Organisation
Birchwell Associates Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
work independently Technical Environment The primary stack is Ruby on Rails. However, we are open to candidates with strong experience in: Python (Django/FastAPI) Node.js Go Elixir The focus is on strong backend engineering fundamentals rather than a specific language. Preferred Experience Experience scaling systems to large user bases ...

Senior Software Engineer

Hiring Organisation
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Location
City of London, London, United Kingdom
Location: London (hybrid, minimum 2 days in office) Salary: £80,000 - £90,000 + shares + benefits Tech stack: Python (Django or Flask or FastAPI) - considering Engineers with a strong background in web development from any backend language React AWS This is a role built around ownership in the truest ...