Senior Full-stack Developer - Python / FastAPI & React / TypeScript

Description

We are creating a new product in a multi-cloud setup and are seeking a Senior Full-stack Developer to drive backend and frontend delivery. You will build with Python/FastAPI, React/TypeScript, PostgreSQL, OpenSearch, and heavy Databricks usage while optimizing performance. Apply today. Responsibilities Create and maintain web applications with Python/FastAPI and SQL Architect APIs and integrations to support high-load database workloads Improve query performance throughout production systems Deliver UI work using TypeScript and React Apply GenAI engineering tools to streamline and improve developer workflows Partner with teammates while owning and completing independent assignments Share progress proactively with stakeholders and the wider team Drive feature ownership and add value beyond ticket-by-ticket execution Deliver outcomes despite ambiguity in a fast-paced startup environment Requirements Extensive experience of 5+ years delivering production systems with Python, FastAPI, and SQL Deep understanding of web app development, API architecture, and integration patterns Demonstrated ability to manage high-load databases and improve query performance Comfort with TypeScript and React plus willingness to work end-to-end full-stack Hands-on use of GenAI engineering tools, ideally Claude Code Clear communication skills with a proactive, ownership-oriented approach Ability to handle uncertainty and execute without constant direction in a transparent, fast-moving startup environment English proficiency at B2 (Upper-Intermediate) level or higher Nice to have Experience across TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand Working knowledge of PostgreSQL and OpenSearch Exposure to cloud platforms, Infrastructure as Code, and supporting tools Experience handling data via PySpark and SparkSQL Client-facing experience

Requirements

• Extensive experience of 5+ years delivering production systems with Python, FastAPI, and SQL

• Deep understanding of web app development, API architecture, and integration patterns

• Demonstrated ability to manage high-load databases and improve query performance

• Comfort with TypeScript and React plus willingness to work end-to-end full-stack

• Hands-on use of GenAI engineering tools, ideally Claude Code

• Clear communication skills with a proactive, ownership-oriented approach

• Ability to handle uncertainty and execute without constant direction in a transparent, fast-moving startup environment

• English proficiency at B2 (Upper-Intermediate) level or higher

Responsibilities

• Create and maintain web applications with Python/FastAPI and SQL

• Architect APIs and integrations to support high-load database workloads

• Improve query performance throughout production systems

• Deliver UI work using TypeScript and React

• Apply GenAI engineering tools to streamline and improve developer workflows

• Partner with teammates while owning and completing independent assignments

• Share progress proactively with stakeholders and the wider team

• Drive feature ownership and add value beyond ticket-by-ticket execution

• Deliver outcomes despite ambiguity in a fast-paced startup environment

Seniority

• Senior

Nice to have

• Experience across TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand

• Working knowledge of PostgreSQL and OpenSearch

• Exposure to cloud platforms, Infrastructure as Code, and supporting tools

• Experience handling data via PySpark and SparkSQL

• Client-facing experience