Senior Full-stack Developer (Python/FastAPI, React/TypeScript)

EPAM·Poland·Удалённо·сегодня

We are building a new multi-cloud product and need a Senior Full-stack Developer to deliver Python/FastAPI services and React/TypeScript UI at scale. You will work with PostgreSQL, OpenSearch, and Databricks, improving performance and integrations across the stack. Apply now.

Responsibilities

Build and support web applications using Python/FastAPI and SQL
Design APIs and integrations that can handle high-load database operations
Tune and optimize query performance across production environments
Implement front-end features with TypeScript and React
Leverage GenAI engineering tools to enhance development workflows
Coordinate with the team while independently delivering assigned work
Communicate early and often with teammates and stakeholders
Own product features and contribute beyond simply completing tickets
Operate effectively in ambiguity and ship results in a fast-paced startup environment

Requirements

Proven track record with 5+ years of production work using Python, FastAPI, and SQL
Strong expertise in web application engineering, API design, and third-party integrations
Hands-on experience operating high-load databases and tuning query performance
Working knowledge of TypeScript and React with readiness to contribute across front end and back end
Practical experience with GenAI engineering tools, ideally Claude Code
Excellent communication skills and a proactive mindset, able to collaborate and self-direct
Demonstrated ability to execute amid ambiguity without constant guidance in a transparent, fast-moving startup environment
English proficiency at B2 (Upper-Intermediate) level or higher

Nice to have

Strong exposure to TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand
Experience working with PostgreSQL and OpenSearch
Familiarity with cloud platforms, Infrastructure as Code, and related tooling
Data engineering background, including PySpark and SparkSQL
Client-facing experience