201 to 225 of 446 FastAPI Jobs in the UK

Applied AI Engineer

Hiring Organisation
Castleton Commodities International
Location
London, UK
Employment Type
Full-time
loop review. Strong programming and data skills, including Python, SQL, and tools/libraries used in agentic development like langgraph, langchain, Pydantic models, NumPy, FastAPI/MCP, etc. Ability to work with APIs, JSON, MCPs, Git or version-controlled artifacts, and lightweight automation or prototyping workflows. Excellent written and verbal ...

Senior Backend Engineer | AI Platform

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 ...

Lead Software Engineer, Team Lead

Location
Greater London, England, United Kingdom
pensions covenant/advisory/trustee-facing tools, and strong ability to connect technical design to covenant outcomes. Experience with Python-based services (e.g., FastAPI) and modern web stacks (e.g., Next.js/React.js) in real-world delivery. Practical experience delivering GenAI/agentic solutions (prompt engineering, RAG, governance patterns ...

Senior Forward Deployed AI engineer

Location
Greater London, England, United Kingdom
mindset. To be successful as a Senior Forward Deployed AI engineer, you should have experience with: Ample Python systems engineering with experience building APIs (FastAPI/Flask) and deploying on AWS (ECS/EKS, Lambda, Bedrock, Docker). Notable understanding and experience building generative AI applications (LangChain, AutoGen, CrewAI ...

Lead Software Engineer, Team Lead

Hiring Organisation
Marsh & McLennan Companies
Location
London, United Kingdom
Salary
£ 100 K
pensions covenant/advisory/trustee-facing tools, and strong ability to connect technical design to covenant outcomes.Experience with Python-based services (e.g., FastAPI) and modern web stacks (e.g., Next.js/React.js) in real-world delivery.Practical experience delivering GenAI/agentic solutions (prompt engineering, RAG, governance patterns) in production ...

Full-Stack Software Engineer, Model Development Platform

Hiring Organisation
wayve
Location
London, United Kingdom
Salary
£ 80 K
experience designing, building, and operating production web applications across frontend and backend systems. Experience with modern technologies such as React, TypeScript, Python, Flask, or FastAPI—or comparable frameworks and languages.Production system design – A strong understanding of system design, API design, data modeling, asynchronous workflows, automated testing, and distributed-system fundamentals. ...

Lead AI Engineer

Location
Crawley, England, United Kingdom
between technical developers and business teams, showcasing strong leadership, creativity, and ethical problem‐solving. Technical Expertise & Tools: Python: Advanced, production‐grade proficiency (Pandas, NumPy, FastAPI/Flask) with an absolute focus on writing clean, modular, and highly testable code; SQL: Expert querying, database design, partitioning, and optimization strategies for large ...

Senior Data Engineer

Location
Greater London, England, United Kingdom
system What you'll have Strong aptitude with SQL, Python and AWS data stack essential; Experience building efficient, scalable databases and APIs (e.g. Django, FastAPI) a huge plus; Experience in Kubernetes, Docker, Spark and related monitoring tools (e.g. DataDog, Grafana, Prometheus) for DataOps a huge plus; Experience with Airflow ...

AI & ML Engineer

Hiring Organisation
Charlotte Tilbury
Location
London, United Kingdom
Salary
£ 100 K
Engineer + Data and AI Team About youThe role requires a blend of technical depth and product sense, includingStrong 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 cloud ...

Senior Data Engineer

Hiring Organisation
Octopus Energy
Location
London, United Kingdom
Salary
£ 80 K
systemWhat you'll haveStrong aptitude with SQL, Python and AWS data stack essential;Experience building efficient, scalable databases and APIs (e.g. Django, FastAPI) a huge plus;Experience in Kubernetes, Docker, Spark and related monitoring tools (e.g. DataDog, Grafana, Prometheus) for DataOps a huge plus;Experience with Airflow a huge plus ...

Data Engineer

Location
Greater London, England, United Kingdom
other engineering teams in a Flask API; Team Tech Stack Our current technology stack primarily includes Linux, Docker, Kubernetes, Jenkins, Kafka, Python, Flask/FastAPI, Postgres, AWS Redshift, dbt, Google Bigquery, Prometheus, Grafana, Elastic Search, Kibana, Lightdash. About the Role: You will work very closely with the Data team lead ...

Senior AI Engineer - Perm - London

Hiring Organisation
INFUSED SOLUTIONS LIMITED
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
Machine Learning, NLP or AI platforms. Experience productionising machine learning models at scale. Strong experience designing RESTful APIs and microservices using frameworks such as FastAPI, Flask or Django. Experience working with SQL and relational databases, including performance optimisation. Experience designing cloud-native solutions within AWS and/or Azure. Strong … automated testing and Infrastructure as Code. Excellent communication and stakeholder management skills. A passion for mentoring and developing other engineers. Technology Stack Python SQL FastAPI PyTorch Docker Kubernetes AWS Azure Git CI/CD Knowledge Graphs Large Language Models (LLMs) Amazon Bedrock Azure AI Foundry Machine Learning Natural Language Processing ...

Senior Software Engineer — Pricing AI (Manchester)

Location
Manchester, England, United Kingdom
analytics; work with large datasets, ensuring data quality and availability for training and prediction tasks. Develop robust RESTful APIs and microservices (using frameworks like FastAPI or Flask) to expose machine learning functionalities and data services; ensure APIs are secure, well‐documented, and perform at scale. Write and maintain comprehensive tests … plus. Must have 8 years’ experience working as a Software Engineer on large software applications. Proficient in technologies including Python, REST, PyTorch, TensorFlow, Docker, FastAPI, Selenium, React, TypeScript, Redux, GraphQL, Kafka, and Apache Spark. Experience working with one or more of the following database systems: DynamoDB, DocumentDB, MongoDB. Demonstrated expertise ...

Software Engineer II, Agentic AI

Location
Oxford, England, United Kingdom
options and contribute to implementation plans. Design, develop, test and maintain cloud-native microservices and REST APIs using Python and relevant frameworks such as FastAPI , FastMCP and Temporal. Contribute to LLM-powered applications and the supporting services used to develop, deploy, observe and operate them. Integrate data technologies such … Sound Python development skills and the ability to produce readable, maintainable and tested code. Working knowledge of API development and a framework such as FastAPI, Flask or Django. Working knowledge of AWS services and cloud‐native application concepts. Working knowledge of Docker, Kubernetes, CI/CD and Unix/Linux ...

Senior Python Backend Engineer | Lead & Mentor

Location
Greater London, England, United Kingdom
while shaping technical architecture and mentoring junior engineers. The ideal candidate has 6–11 years of professional Python experience with Django/Flask/FastAPI, RESTful APIs, and cloud platforms. #J-18808-Ljbffr ...

Senior Fullstack Engineer, Payments Platform

Location
Greater London, England, United Kingdom
will architect and deliver high-scale web applications, owning features end-to-end from code to deployment. We value strong backend with Python/FastAPI and solid frontend with TypeScript/React, plus AWS, Docker, Kubernetes, and Terraform proficiency. Join a collaborative, globally distributed team and contribute to borderless payments. ...

Senior Fullstack Engineer, Payments Platform

Location
Greater London, England, United Kingdom
empower the entire engineering org to ship fast and reliably. Bring 5+ years of building high-performance, client-facing web apps, with backend Python, FastAPI, PostgreSQL, Redis, RESTful APIs, and frontend TypeScript, React, Jest, Storybook. You’ll mentor engineers and own deployments, CI/CD, and monitoring. #J-18808-Ljbffr ...

GenAI-Driven Senior Software Engineer (Java/Python)

Location
Belfast City District, Northern Ireland, United Kingdom
Python) to help shape next‐gen financial software. You will engage in full‐stack development, leverage Spring Boot/Core and Flask/FastAPI, and build cloud‐native solutions with modern JS frameworks. You will also explore Gen‐AI concepts, APIs, and scalable architectures while mentoring mid‐level staff ...

Full-Stack Engineer - React/Python, Flexible Hours

Location
Manchester, England, United Kingdom
join our team in Manchester. You will own features across frontend and backend, building in React/TypeScript and Python (Flask/Django/FastAPI), and integrating with Dynamics 365. You’ll design APIs, create Power BI reports, and collaborate with business stakeholders on delivery, testing, and deployment. The role ...

AI Platform Engineering Lead

Location
Greater London, England, United Kingdom
role is based in London with onsite work 1-3 days per week, leading a squad of up to 4 engineers across Python/FastAPI and React/TypeScript. You will drive the product roadmap, champion secure LLM practices, and collaborate with a product manager, UX, and QA to deliver ...

Senior Product Engineer (£100k + benefits)

Hiring Organisation
Morson Edge
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
thinking (customer value, not just implementation) Evidence of iterative delivery (MVPs, feedback loops, prioritisation) Ability to work with ambiguity and challenge requirements Tech: Python FastAPI, Django, Vue MongoDB, PostgreSQL Kubernetes GCP The money is good too – up to £100k plus benefits including bonus, share options, and private healthcare. ...

Backend Software Engineer – Python

Hiring Organisation
Intellectual Capital Resources
Location
London, United Kingdom
Salary
£ 100 K
mission-critical operations. What’s required for this position? In-depth backend engineering skills and experience writing clean, high-performance code Expertise with Python (FastAPI) Pydantic Postgres SQLAlchemy AWS Experience with distributed systems tools (e.g. Redis, Celery) Any experience with ML inference - GCP, Modal would be useful Background working with ...

Python Software Engineer - Fintech

Hiring Organisation
Run-Time Group Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
class - 2;1 Degree in Comp Sci or STEM subject from a Top ranked University 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, AWS DevOps tools: Kubernetes, Docker,Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams Passion for automation ...

Python Developer / Team Lead - FinTech

Hiring Organisation
Client Server
Location
London, United Kingdom
Salary
£ 100 K
good knowledge of cloud based services (they use GCP but AWS or Azure experience is fine)You have experience of building APIs, ideally FastAPI experienceYou have a good knowledge of CI/CD, testing and deploymentYou have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design ...

Python Developer / Team Lead - FinTech

Hiring Organisation
Appcast
Location
Basildon, Essex, UK
good knowledge of cloud based services (they use GCP but AWS or Azure experience is fine)You have experience of building APIs, ideally FastAPI experienceYou have a good knowledge of CI/CD, testing and deploymentYou have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design ...