FastAPI Jobs in London

1 to 25 of 103 FastAPI Jobs in London

Senior Fullstack Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Reed.co.uk
senior or technical lead role. Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development Tools such as Windsurf, Aider or Augment. Demonstrable experience building and scaling SaaS platforms in a production environment. Strong understanding More ❯
Employment Type: Full-Time
Salary: £80,000 - £90,000 per annum
Posted:

Senior Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Reed.co.uk
senior or technical lead role. Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development Tools such as Windsurf, Aider or Augment. Demonstrable experience building and scaling SaaS platforms in a production environment. Strong understanding More ❯
Employment Type: Full-Time
Salary: £80,000 - £90,000 per annum
Posted:

Full Stack Developer

London, United Kingdom
Hybrid / WFH Options
Story Terrace Inc
learning and professional improvement. One to three years progressive full-stack engineering experience. At least one year of demonstrated experience programming with one or more Python frameworks (e.g., Flask, FastAPI, Django, etc). Excellent communication and interpersonal skills, with the ability to collaborate effectively with internal and external teams. Commercial experience with JavaScript or TypeScript (ideally React). Experience with More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Site Reliability Engineer

London, United Kingdom
Hybrid / WFH Options
Zefr
Continuous Delivery: Argo CD Primary Scripting/Automation Language: Python Observability & Monitoring: Monitoring & Alerting: Prometheus, Datadog, Pagerduty Telemetry Standards: OpenTelemetry Application & Data Ecosystem (Supporting): Application Languages/Frameworks: Python, FastAPI, Flask, Node.js, React Data Streaming: Apache Kafka Data Processing/Transformation: Pandas, DBT Workflow Orchestration: Apache Airflow, Ray Machine Learning Stack: Serving: Triton Inference Server MLOps/Experiment Tracking: Weights More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Engineer, Back End

London, United Kingdom
Group M Worldwide Inc
understand TDD, BDD, unit testing, integration testing and when to use them. You are familiar with trunk-based development in git. Experience with back-end web application frameworks (Django, FastAPI, etc) NICE TO HAVE Google Cloud (Cloud Functions, AppEngine, PubSub, Stackdriver, etc.) Docker, Kubernetes Typescript, NodeJS, React, Webpack etc. Java, C# Experience within the advertising/media agency space. Terraform More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Backend Engineer

London, United Kingdom
Hybrid / WFH Options
Fruition Group
Stay ahead of industry trends and champion AI and automation tools to boost team efficiency About You Proven leadership and hands-on experience building production-grade Python services with FastAPI, Flask, or Django REST Framework Deep understanding of microservices architecture, APIs, service discovery, and messaging patterns Experience with cloud platforms (AWS, GCP, Azure) and containerisation (Docker; Kubernetes a plus) Strong More ❯
Employment Type: Permanent, Work From Home
Posted:

Senior Tools Software Engineer Engineering London

London, United Kingdom
Hybrid / WFH Options
Croud
in secure software development and adherence to best practices (e.g., SOLID principles). Hands-on experience with Python frameworks for building RESTful APIs, such as Django/DRF or FastAPI . Clear and effective communication skills tailored to technical and non-technical audiences. Highly Desirable: Experience with Generative AI and LLMs for delivering advanced solutions Familiarity with diverse database types More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full Stack Developer

London, United Kingdom
Lumi Space
pivotal role in building our data services capability fit for the future. What You'll Be Doing Designing, developing, and deploying scalable and robust SaaS applications using Python, React, FastAPI, MongoDB, modern AWS cloud services, Terraform, and Airflow. Building and maintaining both the frontend and backend of our core product, ensuring seamless user experiences and high performance. Implementing DevOps practices More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Full Stack Engineer

London, United Kingdom
Iprova Sàrl
event streaming and messaging queues such as Kafka Expertise in database systems including Redis, Elasticsearch, Neo4j, and PostgreSQL Proficiency in developing APIs using a backend framework (such as Django, FastAPI, Flask, or Express) Commercial experience in front-end development including at least one web development framework, preferably Vue.js Be comfortable with Unix systems Strong problem-solving skills and a collaborative More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Python Developer, Backend Developer, Flask

London, United Kingdom
Experis
community, contributing to knowledge-sharing initiatives and events. Share your expertise to motivate and mentor your team. Required Skills: Proven experience designing and building REST APIs (ideally with Flask, FastAPI, or similar frameworks). Expertise in designing architectures that meet scalability, reliability, and security goals. Strong problem-solving skills, particularly in product development. Solid understanding of backend best practices, coding More ❯
Employment Type: Permanent
Salary: £70000 - £90000/annum Benefits
Posted:

AI Software Engineer

London, United Kingdom
Experis
scientists and defence analysts to productionise ML models (e.g., for threat detection, anomaly detection, autonomous systems, or decision support tools) Build and maintain secure APIs and infrastructure using Python (FastAPI/Flask), Docker, and Kubernetes Contribute to DevSecOps workflows including automated testing, monitoring, and continuous integration Requirements: 3+ years of experience in software engineering, with a focus on AI/ More ❯
Employment Type: Permanent
Salary: £50000 - £75000/annum
Posted:

Back-End Developer (Python Application Development)

London, United Kingdom
Hybrid / WFH Options
Venquis
environment (e.g., asset management, hedge funds, investment banks) Strong working knowledge of Amazon Web Services (AWS) and cloud-native development Experience with RESTful API design and frameworks such as FastAPI, Flask, or Django Proficient in working with relational databases (PostgreSQL, MySQL) and ORMs (e.g., SQLAlchemy) Familiarity with Docker , container orchestration, and infrastructure-as-code (e.g., Terraform or CloudFormation) Solid understanding More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Pipeline Engineer (Brahma)

London, United Kingdom
DNEG Group
Rez (or similar) for environment and package management. Knowledge of Alembic, OpenColorIO, USD (Universal Scene Description) and other open standards from the ASWF. Experience with web frameworks (e.g., Flask, FastAPI, Django) and database systems (PostgreSQL, Neo4j, Redis). Experience with performance profiling, system monitoring, and observability tools. Understanding of network protocols, security best practices, and compliance requirements. Open-source contributions More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer - Energy & Resources Analytics Platform

London, United Kingdom
Baringa Partners LLP
CI/CD), cloud platforms (Azure, AWS), and Infrastructure as Code (Terraform, Pulumi). Familiarity with various frameworks across front-end and back-end stacks (React, Angular, Vue, Blazor, FastAPI, Spring Boot, Django, .NET). Experience designing and justifying architectural choices. Ability to communicate complex concepts clearly to both technical and non-technical audiences. Experience with agile methodologies (Scrum/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Hedge Fund Trading - Contract Python Developer - Futures, FX, Credit, PnL, Data eng, AWS, Javascript

London, United Kingdom
Scope AT Limited
A passion for learning new skills, including financial concepts and trading workflows. Candidate background - Python development, including: - Scientific libraries (eg, Pandas, Polars, NumPy, SciPy). - Web technologies (eg, Flask, FastAPI). - Data engineering experience. - Familiarity with cloud infrastructure (eg, AWS). Nice-to-Have - JavaScript UI frameworks (eg, React, Vue, Angular). - Docker and Kubernetes. - Previous experience in investment banking More ❯
Employment Type: Contract
Rate: GBP Annual
Posted:

Tech Lead - Platform

London, United Kingdom
Homerun B.V
developments in tech Ensure high-quality code and best practices. Write clean, maintainable and efficient code and ensure code quality through TDD and observability practices Develop RESTful APIs using FastAPI and Pydantic Work with SQL and NoSQL databases, as well as ORM tools like SQLAlchemy and SQLModel Participate in Agile XP methodologies like pair programming and code reviews Deploy applications More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Data Engineer

London, United Kingdom, Vauxhall
Citywire
including BigQuery. -Containerisation: Comfortable building and deploying containerised applications using Docker, ideally in ECS Fargate or similar. -APIs & Microservices: Hands-on experience building and integrating with RESTful APIs using FastAPI, Django REST Framework, or similar. -Data Workflows: Experience designing and maintaining real-time and batch data pipelines, including dbt Core and stream processing tools. -Infrastructure Know-How: Confident working with More ❯
Employment Type: Permanent
Posted:

Software Engineer, Data

London, United Kingdom
Integer, LLC
time-zone hours and legal authorisation to work in your country of residence. Proficient in designing, developing, and maintaining RESTful APIs for data services using Python frameworks such as FastAPI, Flask, or Django. Strong experience with Python's data ecosystem (e.g., Pandas, NumPy) and deep expertise in SQL for building robust data extraction, transformation, and analysis pipelines. Hands-on experience More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Python Engineer - SC Cleared

London, United Kingdom
Opus Recruitment Solutions
departments and will work on high-impact public sector programmes, helping to build secure, scalable, and user-focused digital services. Skillset: Proven experience in Python development (e.g., Django, Flask, FastAPI). Active SC Clearance (must be valid and transferable). Experience working in agile, multidisciplinary teams . Strong understanding of RESTful APIs , microservices, and integration patterns. Familiarity with cloud platforms More ❯
Employment Type: Contract
Posted:

Python Developer

South West London, London, United Kingdom
Hybrid / WFH Options
Stealth IT Consulting Limited
to impactful Proofs of Concept (POC), engage with clients, and explore new business development avenues as you shape the future of AI-driven solutions. What Were Looking For: Python (FastAPI), Typescript (Express) or similar Frontend Development: React, Next.js, or Vite GenAI tools: LangChain, LangGraph, CrewAI, or Vercel AI (Python or JavaScript) LLM platforms: OpenAI, Anthropic, Mistral, or Llama Cloud: AWS More ❯
Employment Type: Permanent, Work From Home
Salary: £55,000
Posted:

Generative Ai Engineer

South West London, London, United Kingdom
Stealth IT Consulting Limited
and tools Collaborate across cross-functional teams, helping build a centre of excellence in GenAI Contribute to business development conversations and future project scoping ?? Your Tech Stack Backend: Python (FastAPI), Node (Express) Frontend: React, Next.js, or Vite GenAI: LangChain, CrewAI, LangGraph, Vercel AI SDK LLMs: OpenAI, Anthropic, Mistral, Llama DevOps: AWS or Azure, containerisation (Docker/Kubernetes) Bonus Points For More ❯
Employment Type: Permanent
Posted:

Engineering - AI Agents Engineer - Analyst - London London United Kingdom Analyst

London, United Kingdom
Hybrid / WFH Options
Goldman Sachs Bank AG
including but not limited to Retrieval-Augmented Generation (RAG), AI agents, and other advanced AI methodologies. Strong fullstack development experience with TypeScript and React for frontend development coupled with FastAPI/Flask for Python backend services, with additional OfficeJS API knowledge preferred Extensive knowledge of AI and machine learning ecosystems, including proficiency in modern RAG/Agent frameworks includingLangchain/ More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer (AI Agents)

London, United Kingdom
Homerun B.V
systems end-to-end 1+ years of professional software engineering experience Solid Python skills and hands-on experience with agent frameworks (LangChain, Google ADK, etc ) Experience using Pydantic , and FastAPI Experience with SQL , DBT , and BigQuery Cloud infrastructure experience (preferably GCP) with Docker & Terraform Experience with AI development environments like Cursor, Windsurf, Claude Code TDD mindset and comfort with Agile More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Python AI Agent Engineer

London, United Kingdom
Hybrid / WFH Options
Intropic
communication with both a technical and non-technical audience Independent and self-driven learner, able to step outside of their area of expertise Python; we work with asyncio, SQLAlchemy, FastAPI, Pydantic, NumPy, Pandas SQL; performance tuning, schema design, monitoring in production, we mainly work with PostgreSQL Experience with transformer LLMs - attractive, nice to have Cloud (AWS) deployments and monitoring, basic More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Product Software Engineer

London, United Kingdom
Faculty
looking for: We're seeking a candidate with the following qualifications: Strong mathematical mindset Proficiency in Python, and its use in building modern web applications using frameworks such as FastAPI or Flask. Familiarity with at least one Infrastructure as Code platform (Terraform/CDK, CloudFormation). Experience with PostgreSQL, MySQL or other similar relational database technologies. Experience with Data Warehousing More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:
FastAPI
London
10th Percentile
£65,000
25th Percentile
£72,500
Median
£80,000
75th Percentile
£87,500
90th Percentile
£102,500