26 to 32 of 32 FastAPI Jobs in the City of London

Full Stack Engineer

Hiring Organisation
Primis
Location
City of London, London, United Kingdom
from day one. What You'll Be Doing: Building and maintaining backend services that power reserve monitoring and compliance reporting - primarily in Python/FastAPI Designing and integrating connections to financial data providers and banking APIs Developing frontend dashboards in React that make complex financial data clear and actionable ...

Python Full-Stack Developer

Hiring Organisation
Crisil
Location
City of London, London, United Kingdom
Python Full Stack Developer Requirements Develop highly scalable applications in Core Python. Hands-on with Python web frameworks such as Django, Flask, or FastAPI. Experience working on SQL with ability to run various data analytics ...

Lead Software Engineer

Hiring Organisation
Tact
Location
City of London, London, United Kingdom
with strong Python experience , a background in scalable backend systems or distributed architecture, and genuine excitement around AI -native products and automation. Experience with FastAPI, cloud infrastructure, microservices or modern AI tooling is highly valuable. This is a true startup environment : high ownership, fast execution, major technical influence ...

Principal Technical Lead

Hiring Organisation
RSSB
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
RSSB are now seeking an experienced Principal Technical Lead to drive the hands-on technical delivery of a new greenfield industry services platform. This is an exciting delivery-focused role for a senior engineer who ...

Python Developer

Hiring Organisation
Digisourced
Location
City of London, London, United Kingdom
designing, scaling, and securing cloud-native applications that power core enterprise services. Key Responsibilities: Develop: Build scalable back-end services using Python (3.10+) and FastAPI/Flask. Architect: Provision and manage AWS resources (Lambda, S3, RDS, DynamoDB, VPC) using Terraform or AWS CDK. Streamline: Own and optimize CI/… manage cloud cost-efficiency. Collaborate: Drive quality through TDD and Pair Programming within an Agile framework. Key Requirements: Languages/Frameworks: Python (Django, FastAPI, Flask). AWS Ecosystem: Lambda, S3, RDS, DynamoDB, VPC, Step Functions. API Design: RESTful, GraphQL, AppSync. IaC: Terraform or AWS CDK. CI/CD: GitLab Cloud ...

Full Stack Engineer

Hiring Organisation
Affinity Labs
Location
City of London, London, United Kingdom
architecture across the portfolio. Essential Requirements 3-6+ years building production-grade full-stack applications, with clear ownership. Strong backend experience in Python (FastAPI preferred) and solid database skills (PostgreSQL/MongoDB). Proven experience building and shipping mobile apps with React Native. Strong React fundamentals (Next.js experience … Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Frontend : React/Next.js Mobile: React Native Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). ...

Product Engineer (Ruby on Rails)

Hiring Organisation
Resi
Location
City of London, London, United Kingdom
product Experience with Hotwire (Turbo & Stimulus) and Tailwind CSS Familiarity with background job processing (Sidekiq, Delayed Job, etc.) Experience with Python and FastAPI - our data pipeline and some supporting services are built in Python, and you'd be expected to maintain and contribute to these alongside the Rails codebase Familiarity … infrastructure and deployment platforms Experience working in a startup or high-growth environment Our Stack Backend: Ruby on Rails, PostgreSQL, Sidekiq Data & Services: Python, FastAPI Frontend: Hotwire (Turbo Stimulus), Tailwind CSS, Three.js Infrastructure: Render Tooling: GitHub Actions, Sentry About Resi Resi is the UK’s number one home extension company ...