26 to 50 of 59 FastAPI Jobs in London

leverages graph databases, machine learning, and modern cloud infrastructure to deliver intelligent procurement and customer service solutions. Our stack includes: Backend Services : Python 3.13, FastAPI, async micro-services architecture Data Layer : Neo4j graph database, PostgreSQL, complex data modelling AI/ML : OpenAI integration, semantic search, conversational agents, unstructured data analysis … small team Adaptable : Comfortable with ambiguity and rapid iteration Mentoring: Able to mentor less-experienced Software Engineers. Nice-to-Have Qualifications Experience with FastAPI or similar async Python web frameworks Experience with Neo4j or other graph databases Experience with graph algorithms and network analysis Experience with Helm and Kubernetes operators ...

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/ ...

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 ...

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 ...

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 ...

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 ...

design fundamentals: DDD, modularity, clean APIs, versioning PostgreSQL, ORMs, migrations, and performance optimisation Experience building developer platforms, multi-tenant systems, or public APIs Python (FastAPI/Flask), Docker, GitHub Actions, Cloud Run, CI/CD, containers Clear communicator across engineers, product managers, and senior stakeholders ...

design fundamentals: DDD, modularity, clean APIs, versioning PostgreSQL, ORMs, migrations, and performance optimisation Experience building developer platforms, multi-tenant systems, or public APIs Python (FastAPI/Flask), Docker, GitHub Actions, Cloud Run, CI/CD, containers Clear communicator across engineers, product managers, and senior stakeholders ...

Salary: £70,000 - £160,000 + 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 ...

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 ...

Rapidly prototype MVPs, validate value with the investment team, and harden the most impactful tools into reliable internal products Build simple internal interfaces using FastAPI, Streamlit, or Next.js to enable intuitive adoption Implement evaluation, observability, and governance to ensure accuracy, reliability, security, and responsible use of AI systems Guide ...

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 ...

manual processes. They’re building something that handles tenant communication, operations, compliance and transactions through AI agents instead. What They're Looking For Python FastAPI LLMs (production systems) AI agent frameworks (LangGraph or similar) RAG pipelines Postgres Redis Async processing and queuing (Celery, RabbitMQ, SQS) Event-driven architecture CI/ ...

Rapidly prototype MVPs, validate value with the investment team, and harden the most impactful tools into reliable internal products Build simple internal interfaces using FastAPI, Streamlit, or Next.js to enable intuitive adoption Implement evaluation, observability, and governance to ensure accuracy, reliability, security, and responsible use of AI systems Guide ...

with a Senior Team, to raise standards, own features from scratch & improve an already super fast-paced technical team Tech Stack: Python ( Django/FastAPI) Typescript ( Vue.js) AWS, serverless NoSQL ( MongoDB/DynamoDB Observabilty/Datadog. This role will give you real ownership, ability to work ...

metrics, logging, and alerting (e.g., Prometheus, Grafana, and related tooling). Key requirements Strong backend development experience with Python , including experience building APIs (e.g., FastAPI or similar frameworks). Experience with Prometheus ‐style observability: metrics, alerting, and dashboards; familiarity with Grafana is a plus. Hands‐on experience with ClickHouse ...

bonus • Working: 3 days in office (Hybrid, Goodge Street, London) • Note: First one month will be 5 days onsite • Tech stack: Python, SQL, APIs, FastAPI, Streamlit, TypeScript, React, Next.js • Visa: This role cannot sponsor Interested? Please apply below. ...

Kubernetes (EKS) Strong knowledge of API design and security (API Gateway, OpenAPI, OAuth2, JWT) Experience with cloud-native frameworks such as Flask or FastAPI Solid understanding of Kubernetes security, IAM, encryption, and CI/CD tooling Exposure to enterprise integrations and event-driven architecture patterns Why This Opportunity is Great ...

Kubernetes (EKS) Strong knowledge of API design and security (API Gateway, OpenAPI, OAuth2, JWT) Experience with cloud-native frameworks such as Flask or FastAPI Solid understanding of Kubernetes security, IAM, encryption, and CI/CD tooling Exposure to enterprise integrations and event-driven architecture patterns Why This Opportunity is Great ...

Highly experienced Python Engineer/Developer Can hit the ground running and make an impact from early Technology needed: Python, Kafka, Flask, OpenAPI + FastAPI Excellent communication and collaborative skills needed Python Developer Day Rate: £400 Outside IR35 Duration: 6-months Start Date: ASAP (No long notice periods please ...

enjoys creating, testing, and improving things Comfortable working in a more entrepreneurial, less structured environment Strong academic background preferred Useful experience may include: FastAPI, React, TypeScript, Streamlit, APIs LLMs, RAG, agentic workflows, automation tools Internal tools, dashboards, workflow systems, CRM-type platforms AI-enabled process improvement or business automation This ...

fast. What You’ll Bring Experience leading technical projects or teams (startups or small teams are a big plus). Strong background in Python , FastAPI , or similar frameworks. Experience working with LLMs , vector databases , and retrieval-augmented generation (RAG). Hands-on experience deploying AI systems in production. Experience ...

Lead Python Engineer AI, Python, FastAPI, Django, Microservices, APIs, Cloud London up to £130k + Equity Build AI-powered systems that automate real-world workflows at scale. This is an opportunity to join a fast-growing AI startup building an AI-driven platform automating up to 80% of property management ...

environments, diagnosed the problems, fixed them, and unlocked the next phase of growth. This is about scaling products, not just teams. Tech Stack: Python · FastAPI · React · TypeScript · GCP Salary: £190,000 - £270,000 + Equity Working Arrangements: 3 days per week in Central London office Why it might interest ...

working closely with founders, sharing opinions, and moving fast Have thick skin, good humour, and a collaborative streak The stack: React Next.js Python (FastAPI) AWS Terraform Claude Code Cursor What we offer: Up to £100,000 base salary Share options Hybrid working. 2 days/week at a brand ...