26 to 50 of 69 FastAPI Jobs in the City of London

Senior Python Engineer

Hiring Organisation
Anson McCade
Location
City of London, London, United Kingdom
discussions. Identify opportunities to improve engineering workflow and Agile practices. Tech Stack You’ll work with a modern and flexible tech setup including: Python · FastAPI · AWS · OpenSearch · PostgreSQL · Django · GitHub · Kubernetes · Helm · Terraform What You’ll Need Strong experience building backend systems in Python (any framework). Solid understanding ...

Data Engineer (Football Club)

Hiring Organisation
Singular Recruitment
Location
City of London, London, United Kingdom
Composer or Vertex Pipelines. Domain Knowledge: Understanding of sports-specific data types ( event, tracking, scouting, video ) API Development: Experience building data-centric APIs using FastAPI , especially in serverless environments (e.g., Google App Engine) Streaming Data: Familiarity with real-time data pipelines and data ingestion at scale DevOps/MLOps: Exposure ...

Site Reliability Engineer

Hiring Organisation
Global Fintech
Location
City of London, London, United Kingdom
Support, DevOps, SRE, or related technical roles, ideally within financial technology environments. Strong technical expertise with Python, Unix, PostgreSQL, and familiarity with Kafka, CockroachDB, FastAPI, GraphQL, Snowflake, Redis, and QuestDB or equivalent technologies. Proven experience designing and implementing monitoring and alerting tools (DataDog, Grafana). Solid experience with AWS Cloud ...

Junior Data Engineer

Hiring Organisation
OTA Recruitment
Location
City of London, London, United Kingdom
with BI tools (e.g., Power BI, Plotly/Dash) for visualization. Experience in frontend development – React/Javascript Experience in structuring APIs – Django, Flask, FastAPI Familiarity with distributed systems (e.g., Spark, Kafka) for large-scale analytics. Knowledge of testing practices (e.g., TDD) in data workflows. Passion for clean, well-documented ...

Machine Learning Engineer

Hiring Organisation
Higher - AI recruitment
Location
City of London, London, United Kingdom
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 ...

Senior Fullstack Engineer

Hiring Organisation
Tech Talent Partners
Location
City of London, London, United Kingdom
building end-to-end and from zero-to-one, working closely with the founding team as well as clients using the product. Required : Python, FastAPI, Postgres, ElasticSearch, RabbitMQ, Typescript, React and -ideally- LLMs. To find out more, please apply with your resume. ...

Back-End Engineer - London - Up to £115,000 Starting Base + Exceptional Bonuses/Benefits

Hiring Organisation
Hunter Bond
Location
City of London, London, United Kingdom
rapidly growing team, while working on cutting-edge AI technology. What You'll Work On: Design and implement scalable backend systems using Python (FastAPI, Flask, or Django) Integrate AI-generated code into production-ready services Take ownership of projects from idea to production — collaborating across product and AI teams Experiment ...

Software Engineer

Hiring Organisation
develop
Location
City of London, London, United Kingdom
Improve system performance, reliability, and developer experience Contribute to a positive, inclusive, and high-trust engineering culture Tech Stack Languages & Frameworks: TypeScript (Next.js), Python (FastAPI), Node.js Infrastructure: Vercel, Google Cloud Platform Architecture: Monorepo with shared internal packages AI & Data: Production AI features with ongoing development and iteration What They ...

Python Developer

Hiring Organisation
Insight Global
Location
City of London, London, United Kingdom
Strong understanding of monitoring platforms and scripting. Ability to schedule scripts and ensure data integrity. Proficiency in: JSON and data manipulation React REST APIs, FastAPI Unix/Linux OpenShift, Docker, Kubernetes Experience with unit testing and writing clear Jira tickets. Plusses Previous experience in Bank of America Knowledge of elastic ...

Full Stack Engineer

Hiring Organisation
Premier Group
Location
City Of London, England, United Kingdom
solutions. Work closely with cross-functional teams (developers, DevOps, data scientists, product managers) in an agile methodology . Their Tech Stack includes: Backend: Python, FastAPI Frontend: Vue.js (they are moving to React and this person will support with this move) Cloud: AWS Databases: Elasticsearch & Postgres And more... Do not miss ...

Senior Frontend Developer

Hiring Organisation
Tiro Partners Limited
Location
City of London, London, United Kingdom
Tech Stack (Engineering Environment) Frontend: React, TypeScript, Vite, Zustand/Recoil, Tailwind (or similar), Web Workers, WebGL/WebGPU (nice to have) Backend: Python, FastAPI, Pydantic, PostgreSQL Infrastructure: GitHub Actions, GCP, Docker, Kubernetes Paradigms: Event-driven architecture, functional programming, real-time data flows Responsibilities Build and maintain complex, high-performance ...

Founding Data Engineer

Hiring Organisation
Harnham
Location
City of London, London, United Kingdom
detail, and ability to work independently Experience with workflow orchestration (Prefect, Airflow, Dagster), cloud data warehouses (BigQuery, Snowflake), or backend Python frameworks (Django, FastAPI) is a plus Benefits 25 days annual leave plus bank holidays Meaningful equity options as the first engineering hire Flexible working: 3 days/week ...

Senior Backend Engineer Python

Hiring Organisation
Plexus Resource Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
with Web3 technologies, including blockchains, DAOs, and smart contracts. Requirements: Strong proficiency in Python and SQL. Hands-on experience with modern Python web frameworks (FastAPI, Flask, or Django). Solid understanding of cloud infrastructure and deployment environments. 3+ years of professional software engineering experience. Benefits: Bonus Equity Flexible Holiday Allowances ...

Senior Backend Engineer

Hiring Organisation
Tech Talent Partners
Location
City of London, London, United Kingdom
building end-to-end and from zero-to-one, working closely with the founding team as well as clients using the product. Required : Python, FastAPI, Postgres, ElasticSearch, RabbitMQ and -ideally- LLMs. Experience building scalable data pipelines, developing robust APIs and services, improving connectivity and maintaining high code quality. To find ...

Senior Full Stack Engineer (Python/TypeScript)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
Senior Full Stack Engineer – AI Startup – Up to 150k 🚀🧠 💰 Salary: £80,000 - £150,000 + meaningful equity 🏙️ Location : London, hybrid 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) 📈 Team size: 27 heads Our y-combinator backend client are building an elite engineering team within the AI space. ...

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 ...

Senior Software Engineer (Python/React)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
Salary: £70,000 - £140,000 + 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 ...

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 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 ...

Frontend Developer

Hiring Organisation
Mirai Talent
Location
City of London, London, United Kingdom
ready code in a fast-moving environment Skills & Experience Essential Strong Front-End development experience (with some back-end capability) Extensive Python experience, including FastAPI, Flask, NumPy Experience working with relational databases, particularly PostgreSQL Solid understanding of UI/UX principles and portal-based applications HTML, CSS and Javascript ...

Green Tech / Energy Tech Start-Up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity

Hiring Organisation
Owen Thomas | Pending B Corp™
Location
City of London, London, United Kingdom
apps for installers on the move Tech Stack: -> React, TypeScript, Konva, Tailwind -> Node.js, PostGREST, Prisma -> PostgreSQL/PostGIS, Docker, Atlas -> (Sunsetting Python + FastAPI) Requirements for Carbon Emission/Green Tech Start-up | Full Stack Engineer | LDN 2 Days Per Week | £50K - £110K + Healthy Equity -> 2+ years commercial experience ...

AI/ML Engineer (Customer Facing, FDE, Python AI Agent/LLM)

Hiring Organisation
The Developer Link
Location
City of London, London, United Kingdom
researchers to push the boundaries of AI-enabled legal technology. What We’re Looking For • Strong hands-on Python development experience (for example FastAPI, data pipelines, automation, integrations). • Experience with AI/ML workflows, NLP, or LLM-driven solutions. • Strong communication skills and confidence working directly with both technical ...

Senior Backend Engineer

Hiring Organisation
M-XR
Location
City of London, London, United Kingdom
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 ...

Founding Engineer

Hiring Organisation
Global M
Location
City of London, London, United Kingdom
adapt, and make AI spending transparent. You: Have 5+ years building and scaling systems that matter. Are full-stack with backend chops—TypeScript, Python, FastAPI, Next.js, PostgreSQL/ClickHouse. You get stuff done. Thrive in startup chaos. “Not my job” isn’t in your vocabulary. Lead from the trenches, care ...

Backend AI Engineer

Hiring Organisation
Harnham
Location
City of London, London, United Kingdom
founding team, you’ll design backend architecture, build data pipelines, and integrate AI/LLM components into production systems. Role Breakdown: 50% Backend Engineering: FastAPI, Flask, Node.js, CI/CD 30% Data Engineering: ETL, DBT, Airflow 20% AI/LLM Integration: LangChain, RAG pipelines, orchestration Key Responsibilities: Design and build ...

Senior AI Backend Engineer

Hiring Organisation
Harnham
Location
City of London, London, United Kingdom
components into distributed systems that enable real-world, production-scale AI deployment . 🔧 What You’ll Do Architect and develop backend systems (Python, FastAPI, Flask, NodeJS) Design and implement RAG pipelines (LangChain, Qdrant, embeddings) Build ETL & CI/CD workflows (Airflow, dbt, MLFlow) Integrate AI/LLM components into backend ...