51 to 75 of 110 FastAPI Jobs in London

Solution Architect / Delivery Lead

Hiring Organisation
E-Solutions IT Services UK Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
metadata management platforms. Experience presenting to Design Authority/governance boards. Strong Understanding of Azure data services and API-based integration. Next.js 14, FastAPI Python, Pipeline orchestration, Data transformation, Data quality, Casbin RBAC, Kuzu knowledge graph, Apache Iceberg, MCP AI server integration and ODCS v2 data contracts layer. Experience ...

AI Engineer/Developer

Hiring Organisation
Michael Page
Location
London, Farringdon Without, United Kingdom
Employment Type
Permanent
Salary
£60000 - £75000/annum
Then a mixture of the following on top: GenAI LLM APIs Experience designing, testing and deploying AI/ML solutions Chat Bots/Agents FastAPI Microsoft Agent Framework LangChain Vector database ML Engineering Job Offer Car allowance of 5k Private medical 25 days + BHS Option to buy 10 more ...

Principal Python Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
algorithmic trading, financial systems integration, compliance, etc.) Deep Linux knowledge Preferred: Familiarity with Java Preferred: Familiarity with Web Frameworks such as Django, Flask or FastAPI A commitment to writing testable, maintainable code #J-18808-Ljbffr ...

Senior Data Scientist

Hiring Organisation
Jobleads-UK
Location
City of Westminster, England, United Kingdom
/AI libraries (PyTorch, XGBoost, TensorFlow). Expert proficiency with SQL development, with Google dialects being advantageous. Proficiency with an API web framework (FastAPI, Django, Flask). Robust CI/CD discipline for ML, including GitHub Actions or GitLab CI, and infrastructure as code solutions such as Terraform. Desired Experience ...

Applied AI Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Required Qualifications 5-8+ years of experience building production AI/ML systems Modern Python proficiency with deep knowledge of the ecosystem (Pydantic, FastAPI, asyncio, type safety) Experience with modern AI frameworks (we currently favour Pydantic AI) Production experience maintaining human‐in‐the‐loop systems and AI monitoring/ ...

Software Engineer - Full Stack (London)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
ship something fragile, and we treat velocity and quality as complementary, not competing. What You’ll Do Design and build platform systems in Python (FastAPI) – from API contracts to database schema and infrastructure – and high‐quality user‐facing experiences in TypeScript and React, with an emphasis on clean component design ...

Senior AI Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
documents like pdfs. Experience working with re‐ranking models. Production-Grade Asynchronous Python: Strong software engineering fundamentals with deep experience in asynchronous programming (asyncio, FastAPI) to handle highly concurrent, I/O‐bound LLM and database calls. Advanced Context Engineering: Proven experience solving production RAG challenges such as context window ...

Backend Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
LLMs - agents, RAG, evals and tooling such as MCP. An active interest in DevOps and Machine Learning. Experience with frameworks like Django, Flask or FastAPI, Elasticsearch or similar NoSQL technologies, and relational databases. Experience with large-scale data processing, including self-hosted or bare-metal environments. What We Offer ...

Principal Python Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Experience with TDD, BDD or other testing methodologies Preferred: Familiarity with PostgreSQL and Snowflake Preferred: Familiarity with Web Frameworks such as Django, Flask or FastAPI Preferred: Familiarity with event streaming platforms such as Apache Kafka Preferred: Familiarity with data pipeline platforms such as Apache Airflow Preferred: Familiarity with Java Preferred ...

Mid-Senior Software Engineer (AI & Research)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
support other build teams when needed — we're a startup and context‐switching is part of the job. Our stack: AWS, React Native, React, FastAPI, NestJS, Scala, Cypress, Maestro. (experience across all is not required) Delivery of Wellcome grant CIRCuiTS Companion Design, build and iterate on the AI companion feature ...

Lead ML Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Hands‐on experience with LLM and agent frameworks and agentic reasoning patterns. Practical understanding of Model Context Protocol (MCP), including server and tool patterns. FastAPI and REST API design and implementation experience. Experience with prompt engineering and RAG‐based architectures. Containerisation and Kubernetes‐based deployment experience. Ability to work across ...

Full-Stack Software Engineer — AI-Driven Cloud Apps

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
stack, building production systems and delivering meaningful outcomes with modern cloud-based tooling. You will contribute to backend services with Python and Django/FastAPI and build frontend experiences using React and TypeScript, while improving reliability and performance across the platform. #J-18808-Ljbffr ...

Senior Python Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
experience within enterprise environments Excellent SQL and data processing skills, including Pandas/NumPy Experience building APIs and backend services using frameworks such as FastAPI, Flask or Django Previous exposure to trading, risk, PnL or capital markets environments Experience with large-scale data processing, cloud platforms or investment banking systems ...

Python Full Stack Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
quality. Collaborate with functional analysts and technical specialists as needed. Develop Python microservices. Experience with SQL database and caching technologies. Required Skills Python (libraries: FastAPI, pandas, SQLAlchemy) Micro‐service architecture Nice to have Angular with TypeScript Languages English: C1 Advanced Seniority: Senior Location: London, United Kingdom of Great Britain ...

AI Technical Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
engineering team to translate strategic goals into technical realities SKILLS Must have 10+ years of professional software development experience. Advanced proficiency in Python (asyncio, FastAPI) and TypeScript (Next.js/React, serverless execution layers) Hands-on experience building complex, stateful agentic workflows using LangGraph or LangChain Proven track record architecting, provisioning ...

Data & AI Solution Architect - Kearney Activate

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
data architecture as strategic enablers of business transformation—linking technology decisions directly to measurable client outcomes. Technologies & Concepts Programming & APIs: PySpark , Python, FastAPI , FastMCP , SQL, OAuth2 AI Architectures: Retrieval-Augmented Generation, In-Context Learning, Agent Design, Function Calling, LLM Fine-Tuning & Adaptation Strategies Data Analytics & Quality: Exploratory Data Analysis, advanced ...

Senior AI Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
right technical toolkit. Strong Python, hands‐on experience with LLMs (OpenAI, Anthropic, open‐source), agent frameworks, RAG pipelines, vector databases, and backend infrastructure like FastAPI, Postgres, and ElasticSearch, or close enough that the gaps close fast. Domain curiosity, not just technical ability. You go deep on the problem, not just ...

Secure Engineering/DevSecOps Adoption Practitioner

Hiring Organisation
Vertex I.T. Solutions Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 300 Daily
number of DevSecOps Enginers Supports secure SDLC adoption, dependency scanning, SBOM, quality gates and evidence without duplicating DevSecOps foundations Python (Django, DRF, FastAPI), Databases (PostgreSQL, MySQL), Async/Messaging (Celery, Redis, AWS SQS/SNS/Lambda), and DevOps/Testing (Docker, GitHub Actions, Pytest, Playwright ...

Senior ML Engineer - Enterprise AI Platform Delivery

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
operate MCP-based platforms and collaborate with product teams to deliver reliable AI tooling. The role requires strong Python, expertise with LLM frameworks, FastAPI, and Kubernetes, plus experience with RAG and tool orchestration in an enterprise setting. #J-18808-Ljbffr ...

Technical Lead (Python/React)

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £90,000 per annum
offering the opportunity to influence both product direction and engineering culture. Key Requirements Strong software engineering background with leadership experience. Advanced Python development skills (FastAPI desirable). Experience with SQL, cloud infrastructure, CI/CD, and scalable systems. Exposure to React/TypeScript is advantageous. Experience within SaaS, cybersecurity ...

Technical Lead (Python/React)

Hiring Organisation
Robert Half Limited
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
offering the opportunity to influence both product direction and engineering culture. Key Requirements Strong software engineering background with leadership experience. Advanced Python development skills (FastAPI desirable). Experience with SQL, cloud infrastructure, CI/CD, and scalable systems. Exposure to React/TypeScript is advantageous. Experience within SaaS, cybersecurity ...

Technical Lead - Product

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
proven experience deliveringend-to-end software products. Proven ability to leador mentor development teams within an Agile environment. Advanced Pythondevelopment skills, ideally with FastAPI or similar frameworks, and astrong understanding of relational databases, schema design, and SQL. Experience designingscalable systems and working with cloud infrastructure and CI/CDpipelines. Familiarity ...

Forward Deployed Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
/ML workflows or intelligent applications (LLMs, RAG, forecasting, symbolic reasoning, etc.). Strong coding background in Python , plus familiarity with GCP, Docker, FastAPI, LangChain/LangGraph, Elasticsearch, Snowflake, BigQuery . Experience with data pipelines and distributed systems in production environments. Proven ability to translate complex business challenges into structured ...

Forward Deployed Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
retrieval, multi-step reasoning, evals, guardrails. Customer-facing experience preferred. Wealth, fintech or another regulated industry is a strong plus. Stack and tools Python (FastAPI, Pydantic, async stack), Azure (App Services, Functions, AI Foundry, Key Vault, Entra ID, Private VNet), Postgres, OpenAI and Anthropic models, evaluation frameworks for agentic systems ...

Senior Software Engineer, Unified Platform - Digital Assets

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
platforms (or closely adjacent high-stakes money-movement systems). DeFi, smart contracts, staking, or other on-chain systems. Full-stack development with Python (FastAPI). Strong relational data modeling fundamentals. GitOps and Kubernetes. Job orchestration systems (Airflow, Prefect, etc.). For more information about DRW's processing activities ...