1 to 25 of 26 FastAPI Jobs in the South East

permanent Key Responsibilities Yourresponsibilitieswillinclude, but not limited to: Backend architecture &APIs (primary focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput workloads. Build well-versioned RESTful APIs aligned to OpenAPI/Swagger, with strong conventions for consistency, idempotency, and backward compatibility. Implement authentication ...

building scalable mobile APIs (REST, etc.). Good principles of security management (secrets, protocols, etc.). Experience with some Python web frameworks (Django, Flask, FastAPI, etc.). Desirable Skills Can speak, or learning to speak, more than one language Experience with real-time databases. Experience with in-memory databases. Experience ...

capabilities , including: Large Language Models (LLMs) Retrieval-Augmented Generation (RAG) AI agents and orchestration workflows Designing and maintaining backend services and APIs (primarily Python, FastAPI/Flask) Building and scaling data pipelines and search systems using: ElasticSearch, Weaviate, Pinecone, and other vector databases Engineering secure, containerised architectures using Docker ...

design patterns Experience with Agile processes Experience with Terraform Experience with Unit Testing Preferably PyTest Optional, but recommended skills: HTML/CSS React Typescript FastAPI framework Does this sound like your next career move? Apply today! Working with Certain Advantage We go the extra mile to find the best people ...

Reviewing feature designs from a testability perspective Participating in architecture discussions with a quality lens Our Client's Tech Stack (Context) Backend: Python 3.11+, FastAPI Frontend: TypeScript, React Infra: AWS (ECS/Fargate, S3, RDS, CloudFront) Data: PostgreSQL, CSV/Parquet CI/CD: GitLab CI IaC: Terraform Testing: Pytest ...

stage environment (ownership, ambiguity, fast iteration) Someone who can collaborate well with technical + non-technical/domain experts Nice to have: Django/FastAPI AWS/cloud platform experience Scientific/healthcare/bioinformatics data exposure (not essential) Why it's interesting: Real-world impact in healthcare/life ...

Steadrock's internal systems: Compute Infrastructure (DGX) Manage our NVIDIA DGX server (Linux environment, CUDA, system health) Build, test, and maintain internal APIs (FastAPI/Flask) Design stable ngrok/reverse-proxy/network connections for remote access Optimise GPU utilisation and monitor performance AI Agent & Automation Development Develop pipelines … What You Need Technical Strong Python Experience with Linux (Ubuntu), bash, SSH Understanding of GPUs, CUDA basics, or willingness to learn fast Experience with FastAPI, Flask or similar Basic networking knowledge (ports, tunnels, proxies) SQL or NoSQL experience Preferred Experience with LLM APIs (OpenAI, Anthropic, DeepSeek, Qwen) Exposure to Docker ...

permanent Key Responsibilities Yourresponsibilitieswillinclude, but not limited to: Backend architecture &APIs (primary focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput w click apply for full job details ...

squad. You'll be building backend APIs and deploying them into a modern AWS + Kubernetes environment. The Role • Building backend APIs in Python (FastAPI ideally) • Working with PostgreSQL • Deploying services into AWS (EKS preferred) • Managing container workloads in Kubernetes • Building infrastructure with Terraform • Implementing CI/CD pipelines (GitHub … Actions, GitLab, Jenkins, ArgoCD) • Shipping production-grade cloud-native applications What We're Looking For Strong Python backend development experience API development (FastAPI highly desirable) Solid SQL/PostgreSQL knowledge AWS experience (EKS ideal) Kubernetes deployment experience Terraform (Infrastructure as Code) CI/CD automation experience Nice to have: Experience ...

Job Title: AI/ML Engineer – Data Science Location: United Kingdom (Remote/Hybrid) Eligibility: Permanent UK Citizenship required Experience: 5–7 years (Mandatory in Data Science/AI-ML) Role Overview We are seeking ...

Job Title: AI/ML Engineer – Data Science Location: United Kingdom (Remote/Hybrid) Eligibility: Permanent UK Citizenship required Experience: 5–7 years (Mandatory in Data Science/AI-ML) Role Overview We are seeking ...

Job Title: AI/ML Engineer – Data Science Location: United Kingdom (Remote/Hybrid) Eligibility: Permanent UK Citizenship required Experience: 5–7 years (Mandatory in Data Science/AI-ML) Role Overview We are seeking ...

Senior Software Engineer | London | £100,000 - £160,000 | Python | FastAPI | AWS Location: London based - hybrid Salary: £100,000 - £160,000 + equity Tech Stack: Backend: Python (experience with FastAPI or Django or Flask beneficial) Cursor, Claude Code AWS - experience with Azure & GCP beneficial Are you a backend engineer who cares … complex problems, and be part of an exceptional team, get in touch at . Senior Software Engineer | London | £100,000 - £160,000 | Python | FastAPI ...

Develop dashboards for monitoring AI-driven conversations and system activity Design UI components that visualise AI outputs, analytics, and system insights Build and maintain FastAPI REST endpoints powering AI features and automations Implement real-time UI updates using WebSockets for live AI data streams Participate in early architectural discussions, implementation … ES6+), and familiarity with Next.js or TypeScript is strongly preferred. Additional exposure to any of the following is a plus: Tailwind CSS, Python and FastAPI, building or consuming REST APIs, Git and GitHub workflows, or a basic understanding of AI-backed systems such as LLMs, automation pipelines, or analytics dashboards. ...

Develop dashboards for monitoring AI-driven conversations and system activity Design UI components that visualise AI outputs, analytics, and system insights Build and maintain FastAPI REST endpoints powering AI features and automations Implement real-time UI updates using WebSockets for live AI data streams Participate in early architectural discussions, implementation … ES6+), and familiarity with Next.js or TypeScript is strongly preferred. Additional exposure to any of the following is a plus: Tailwind CSS, Python and FastAPI, building or consuming REST APIs, Git and GitHub workflows, or a basic understanding of AI-backed systems such as LLMs, automation pipelines, or analytics dashboards. ...

Develop dashboards for monitoring AI-driven conversations and system activity Design UI components that visualise AI outputs, analytics, and system insights Build and maintain FastAPI REST endpoints powering AI features and automations Implement real-time UI updates using WebSockets for live AI data streams Participate in early architectural discussions, implementation … ES6+), and familiarity with Next.js or TypeScript is strongly preferred. Additional exposure to any of the following is a plus: Tailwind CSS, Python and FastAPI, building or consuming REST APIs, Git and GitHub workflows, or a basic understanding of AI-backed systems such as LLMs, automation pipelines, or analytics dashboards. ...

Develop dashboards for monitoring AI-driven conversations and system activity Design UI components that visualise AI outputs, analytics, and system insights Build and maintain FastAPI REST endpoints powering AI features and automations Implement real-time UI updates using WebSockets for live AI data streams Participate in early architectural discussions, implementation … ES6+), and familiarity with Next.js or TypeScript is strongly preferred. Additional exposure to any of the following is a plus: Tailwind CSS, Python and FastAPI, building or consuming REST APIs, Git and GitHub workflows, or a basic understanding of AI-backed systems such as LLMs, automation pipelines, or analytics dashboards. ...

Develop dashboards for monitoring AI-driven conversations and system activity Design UI components that visualise AI outputs, analytics, and system insights Build and maintain FastAPI REST endpoints powering AI features and automations Implement real-time UI updates using WebSockets for live AI data streams Participate in early architectural discussions, implementation … ES6+), and familiarity with Next.js or TypeScript is strongly preferred. Additional exposure to any of the following is a plus: Tailwind CSS, Python and FastAPI, building or consuming REST APIs, Git and GitHub workflows, or a basic understanding of AI-backed systems such as LLMs, automation pipelines, or analytics dashboards. ...

This is a hands-on role focused on delivering high-quality user experiences in React and TypeScript while building and extending the Python/FastAPI services that power the platform. You will work closely with product and design to translate Figma concepts into production-ready interfaces such as real-time … personalised care flows, ensuring they feel intuitive while meeting the demands of a regulated environment. On the backend, you will develop and extend FastAPI services, design clean REST APIs, and work with PostgreSQL and SQLAlchemy to manage structured data. You will also contribute to implementing OAuth2 authentication across the stack ...

Senior Full Stack Engineer (AI) | London | £100k to £150k | React | Django | FastAPI Location: London Salary: £100,000-£150,000 + benefits This role is for Engineers who are intellectual and driven by deep complexity. This is about building tools that help people make sense of exceptionally complex systems. You will … competent as they are ambitious. What you will be doing Building and evolving full stack applications used by technical teams, using Django, FastAPI & React Creating interfaces that help users understand complex behaviour and data Working closely with others to shape how tools should work and feel Balancing speed, quality ...

BACKEND ENGINEER - LONDON (WATERLOO, HYBRID) KEY POINTS Salary up to £75,000 Hybrid working - 3 days per week in Waterloo, London Python, FastAPI, PostgreSQL, AWS & Docker Building real-time AI solutions within the sports industry ABOUT THE CLIENT We're supporting a rapidly growing, AI-focused organisation operating within … time data systems Fast-paced, collaborative engineering environment THE BACKEND ENGINEER ROLE: You'll design, build, and maintain high-performance APIs using Python and FastAPI, working with large volumes of live sports data. The systems are real-time and data-heavy, so experience with asynchronous programming and scalable backend architecture ...

understand the trade-offs between speed, cost, and model performance. Design, implement, and productionise multi-agent LLM systems that reason, plan, and coordinate. Develop FastAPI-based microservices optimised for low latency and high reliability. Engineer and evaluate RAG pipelines: hybrid retrieval, re-ranking, grounding, and context validation. Integrate real-time … model-faithfulness metrics. What we're looking for Proven ability to build and ship agentic or multi-agent frameworks into production. Expert Python, FastAPI, and asyncio developer. Practical experience with LangChain, Autogen, or custom orchestration layers. Startup mindset: ownership, speed, and pragmatism over perfection. Bonus points Experience working with voice ...

understand the trade-offs between speed, cost, and model performance. Design, implement, and productionise multi-agent LLM systems that reason, plan, and coordinate. Develop FastAPI-based microservices optimised for low latency and high reliability. Engineer and evaluate RAG pipelines: hybrid retrieval, re-ranking, grounding, and context validation. Integrate real-time … model-faithfulness metrics. What we're looking for Proven ability to build and ship agentic or multi-agent frameworks into production. Expert Python, FastAPI, and asyncio developer. Practical experience with LangChain, Autogen, or custom orchestration layers. Startup mindset: ownership, speed, and pragmatism over perfection. Bonus points Experience working with voice ...

understand the trade-offs between speed, cost, and model performance. Design, implement, and productionise multi-agent LLM systems that reason, plan, and coordinate. Develop FastAPI-based microservices optimised for low latency and high reliability. Engineer and evaluate RAG pipelines: hybrid retrieval, re-ranking, grounding, and context validation. Integrate real-time … model-faithfulness metrics. What we're looking for Proven ability to build and ship agentic or multi-agent frameworks into production. Expert Python, FastAPI, and asyncio developer. Practical experience with LangChain, Autogen, or custom orchestration layers. Startup mindset: ownership, speed, and pragmatism over perfection. Bonus points Experience working with voice ...

understand the trade-offs between speed, cost, and model performance. Design, implement, and productionise multi-agent LLM systems that reason, plan, and coordinate. Develop FastAPI-based microservices optimised for low latency and high reliability. Engineer and evaluate RAG pipelines: hybrid retrieval, re-ranking, grounding, and context validation. Integrate real-time … model-faithfulness metrics. What we're looking for Proven ability to build and ship agentic or multi-agent frameworks into production. Expert Python, FastAPI, and asyncio developer. Practical experience with LangChain, Autogen, or custom orchestration layers. Startup mindset: ownership, speed, and pragmatism over perfection. Bonus points Experience working with voice ...