26 to 50 of 110 FastAPI Jobs in London

Senior Full Stack Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
clients across multiple sectors. Assess technical trade-offs and guide design decisions across projects. Write, review, and own high-quality code - primarily Python (Flask, FastAPI, or Django) and JavaScript/TypeScript (React preferred). Build and maintain RESTful APIs and modern frontends. Work directly with clients - communicating clearly, understanding ...

Senior Manager, Forward Deployed AI Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
record of delivering production Python services and APIs; working knowledge of cloud‐native application patterns and release practices. Software Engineering Production‐grade Python services (FastAPI, AWS Lambda, event‐driven patterns) and front‐end development with React/Next.js, Material UI and SWR. Cloud architecture design capability across major providers; rounded ...

Senior AI Engineer Manager/Associate Director | Capital Markets

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
LangChain, LangGraph, Agent Development Kit or similar agent frameworks Experience with vector databases such as Pinecone, Chroma or similar API development experience, ideally with FastAPI or similar frameworks Knowledge of MLOps, LLMOps, CI/CD or production deployment practices Experience designing or supporting evaluation frameworks for AI or agentic systems ...

Senior Backend Engineer (Outside IR35)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
mindset: high autonomy, a passion for greenfield engineering, and a track record of thriving in fast-moving startup environments. Familiarity with tools like PostgreSQL, FastAPI, Docker, and GCP/AWS will make you stand out immediately. If you are an experienced contractor ready to take full ownership of a greenfield ...

Applied AI ML Lead - LLM Suite Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Skills Computer science degree or equivalent practical experience Hands‐on experience with system design, application development, testing, and operational stability Proficiency in Python (FastAPI) Experience building microservices and APIs Experience with elastic compute, NoSQL databases, and messaging queues Strong understanding of the Software Development Life Cycle Solid grasp ...

Senior AI Engineer Manager/Associate Director Capital Markets

Hiring Organisation
Datatech Analytics
Location
London, United Kingdom
Employment Type
Permanent
LangChain, LangGraph, Agent Development Kit or similar agent frameworks Experience with vector databases such as Pinecone, Chroma or similar API development experience, ideally with FastAPI or similar frameworks Knowledge of MLOps, LLMOps, CI/CD or production deployment practices Experience designing or supporting evaluation frameworks for AI or agentic systems ...

AI engineer with Agentic experience

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
professional software development experience. Strong backend development experience with Python with a track record of clean, maintainable, testable production code. Production API design & delivery (FastAPI preferred), including versioning, documentation (OpenAPI/Swagger), and observability. Cloud experience (AWS preferred) beyond core compute/storage/DB—e.g., eventing, queues, serverless, logging ...

Senior Wordpress Developer

Hiring Organisation
Alban Recruitment Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £50,000 per annum
more of the following would be highly advantageous: React Node .js Python Laravel TypeScript Docker Linux server administration Cloud hosting platforms Headless WordPress GraphQL FastAPI or Express .js SQL optimisation AI and Emerging Technologies We’re looking for developers who are enthusiastic about the future of AI-assisted software development. ...

Senior Full Stack Engineer - AI for Finance (London)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
financial services. You will own core product development, collaborate with founders, and drive architecture decisions. The role requires expertise in React, Next.js, Python (FastAPI/Django), PostgreSQL, Docker and Kubernetes, with equity and a competitive salary in a fast-growing startup. #J-18808-Ljbffr ...

GenAI Full-Stack Engineer — Build POCs & Scale Solutions

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
GenAI-focused full-stack developer to build and scale GenAI POCs into production-grade applications. You will design and implement backend microservices in Python (FastAPI) or TS (Express), craft responsive UIs in React/TypeScript, and leverage LangChain ecosystems to empower clients with AI-driven capabilities. You will also work ...

Senior Full Stack Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Interested in building software that directly impacts how businesses operate. Preferred Experience 5+ years of software engineering work experience. Experienced in Typescript, Python, React, FastAPI, Django, Flask, and AWS. Strong experience designing distributed systems and scalable applications. Experience owning production systems and making architectural decisions. Familiarity with cloud infrastructure, APIs ...

Backend Developer

Hiring Organisation
First Choice Staff
Location
Feltham, London, United Kingdom
Employment Type
Permanent
Salary
£40,000
covering architecture, processes, and code Essential Skills and Experience Solid proficiency in Python, JavaScript, and SQL Strong understanding of back-end frameworks (e.g. Flask, FastAPI, Node.js or similar) Experience working with cloud platforms (e.g. DigitalOcean, AWS, or Azure) Experience developing or maintaining RPA solutions Ability to work independently, managing ...

Technical Lead - Product

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
delivering end-to-end software products. Proven ability to lead or mentor development teams within an Agile environment. Advanced Python development skills, ideally with FastAPI or similar frameworks. Strong understanding of relational databases, schema design, and SQL. Familiarity with front-end development (TypeScript, React) is highly desirable. Experience designing scalable ...

Senior ML Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
navigate ambiguity, and deliver results Excellent communication skills and ability to collaborate both within engineering organizations and on cross‐functional teams Experience with OpenAPI, FastAPI, or similar It’s a bonus if you have Experience with MLFlow, model versioning, and storage Familiarity with Databricks or similar platforms Experience supporting high ...

Senior Backend Engineer | AI Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
teams to understand their needs and provide scalable platform solutions. Continuously improve developer experience and platform adoption across the organization. Tech Stack: Backend Python FastAPI Agent Development Kit (ADK) Datastores PostgreSQL BigQuery Firestore Infrastructure Google Cloud Platform (GCP) RabbitMQ Terraform Monitoring & Observability Grafana Prometheus Langfuse incident.io Sentry What to Expect ...

AI & ML Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
tooling, contributing ideas and recommendations for continuous improvement. Who you will work with Data and AI Team About you Strong Python engineering skills (FastAPI, testing, typing) and experience with cloud‐native development (GCP preferred). Hands‐on experience with GCP Vertex AI (model endpoints, pipelines, embeddings, vector search) or equivalent ...

Backend Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
engine: scheduling, execution, state, retries, concurrency and cancellation, the machinery that decides what runs, when, and what happens when it doesn't. Python and FastAPI on AWS, shipped to production multiple times a day Design for load that isn't smooth: capacity, back-pressure and isolation for a system whose ...

AI & ML Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
work with Data and AI Team About you The role requires a blend of technical depth and product sense, including Strong Python engineering skills (FastAPI, testing, typing) and experience with cloud-native development (GCP preferred). Hands-on experience with GCP Vertex AI (model endpoints, pipelines, embeddings, vector search ...

AI & ML Engineer — Production-Ready AI on GCP

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
work with Data and AI Team About you The role requires a blend of technical depth and product sense, including Strong Python engineering skills (FastAPI, testing,typing) and experience with cloud-native development (GCP preferred). Hands-on experience with GCP Vertex AI(model endpoints, pipelines, embeddings, vector search ...

Lead Full Stack Engineer London, Bristol, Manchester

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
APIs, data layers, infrastructure and delivery pipelines that make AI safe, reliable and useful for citizens and civil servants. Our stack includes Python (Django, FastAPI), TypeScript, modern JS frameworks (React, Astro, Svelte), PostgreSQL, AWS and Terraform. We integrate frontier LLMs through providers such as Amazon Bedrock, and the AI-integration ...

Senior Data Scientist

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
projects, such as NER, table extraction, OCR integrations, or GNN solutions. Familiarity with orchestration and deployment tools: Airflow, Redis,Flask/Django/FastAPI,SQL,R-Shiny/Dash/Streamlit. Openness to evaluate and adopt emerging technologies and programming languages as needed. Public contributions or demos on GitHub, Kaggle ...

Senior AI Engineer - Perm UK

Hiring Organisation
INFUSED SOLUTIONS LIMITED
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
development experience. Experience productionising Machine Learning, NLP or Generative AI models. Strong experience designing and building RESTful APIs and microservices using frameworks such as FastAPI , Flask or Django . Strong SQL skills with experience designing performant relational database solutions. Commercial experience with AWS and/or Azure cloud platforms. Experience … functional teams. Desirable Experience Experience with any of the following would be highly advantageous: Large Language Models (LLMs) Amazon Bedrock Azure AI Foundry PyTorch FastAPI Knowledge Graphs Kubernetes Docker Infrastructure as Code MLOps Event-Driven Architecture Vector Databases Retrieval-Augmented Generation (RAG) Technology Stack Python SQL FastAPI PyTorch Docker Kubernetes ...

Senior Fullstack Engineer - Remote (Python + React)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
data models, ensure security, and optimize performance across cloud-hosted services. The candidate should have 8+ years in backend development, experience with Python, FastAPI/Flask, ReactJS, and AWS. Hybrid UK/London work with strong ownership is expected. #J-18808-Ljbffr ...

Senior Java / Python Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
experience with Java and/or Python within enterprise environments Experience building backend services, APIs or distributed systems using technologies such as Spring Boot, FastAPI, Flask or Django Strong SQL and data processing skills, with exposure to large-scale data environments Previous experience working with risk platforms, risk data, trading ...

AI Engineer - Financial Service Consulting

Hiring Organisation
Datatech Analytics
Location
London, United Kingdom
Employment Type
Permanent, Part Time
another regulated industry, is essential. Tech skills include Python, SQL, LLM development (prompt engineering, fine-tuning, RAG), LangChain/LangGraph, agent frameworks, vector databases, FastAPI, and AWS, Azure, GCP or Databricks. CI/CD, MLOps and LLMOps familiarity expected. Strong communication and stakeholder skills matter at every level. ...