Senior Full-Stack Engineer: Python + TypeScript Ownership

The Portfolio Group; City Of London; On-site; GBP 90,000 - 130,000; Full time

Job summary

The Portfolio Group is seeking a senior software engineer for a London-based, on-site role blending backend Python and frontend TypeScript work. You will own features from design through production, building robust APIs with Python (FastAPI) and responsive UI with React.

You will tackle scalable architectures, ensure reliability, and participate in modern delivery practices, CI/CD and testing, while collaborating with senior engineers to shape the platform's evolution.

Qualifications

• Strong commercial Python experience building production services.
• Excellent TypeScript and React development experience.
• Experience with FastAPI or similar Python backend frameworks.
• Strong understanding of software architecture and system design.
• Knowledge of concurrency and asynchronous programming.

Responsibilities

• Design, develop and own end-to-end software solutions using Python and TypeScript.
• Build robust backend services and APIs with Python (FastAPI).
• Create responsive frontend apps using React and TypeScript.
• Develop and integrate services connecting AI-powered capabilities.
• Make architectural decisions around scalability, performance, reliability and maintainability.
• Write clean, tested production code and contribute to code reviews.
• Work with CI/CD pipelines and automated testing.

Skills

Python

TypeScript

React

FastAPI

AWS

CI/CD

SQL

ORMs

Architectures

Concurrency

Tools

Git

Docker

Kubernetes

PostgreSQL

Redis

CI/CD Tools

Job description

The Portfolio Group is seeking a senior software engineer for a London-based, on-site role blending backend Python and frontend TypeScript work. You will own features from design through production, building robust APIs with Python (FastAPI) and responsive UI with React.

You will tackle scalable architectures, ensure reliability, and participate in modern delivery practices, CI/CD and testing, while collaborating with senior engineers to shape the platform's evolution.