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Senior Full-stack Developer, Python/FastAPI, React & SQL

EPAM Systems · Remote - Poland · 2026-09-29

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Job description

We are launching a new multi-cloud product and need a Senior Full-stack Developer to own full-stack delivery from Python/FastAPI APIs to React/TypeScript UI. You will optimize PostgreSQL and OpenSearch performance and collaborate in a Databricks-heavy environment. Apply today.

Responsibilities

- Develop and enhance web applications using Python/FastAPI and SQL

- Define and implement APIs and integrations that support high-load database operations

- Optimize and troubleshoot query performance in production systems

- Deliver front-end work using TypeScript and React

- Incorporate GenAI engineering tools to improve development workflows

- Work collaboratively while independently owning assigned tasks

- Maintain proactive communication with stakeholders and teammates

- Own features end to end and contribute beyond ticket completion

- Execute effectively through ambiguity in a fast-paced startup environment

Requirements

- Demonstrated 5+ years of production delivery with Python, FastAPI, and SQL

- Advanced knowledge of web application development, API design, and integration work

- Hands-on ability to operate high-load databases and optimize query performance

- Familiarity with TypeScript and React and willingness to work across the full stack

- Practical experience with GenAI engineering tools, ideally Claude Code

- Strong communication abilities and proactive ownership, comfortable working solo and with a team

- Track record of navigating ambiguity and shipping without constant direction in a transparent, fast-moving startup environment

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

Nice to have

- Experience with TypeScript, React, Next.js, Storybook, Playwright, Radix UI, and Zustand

- Experience working with PostgreSQL and OpenSearch

- Knowledge of cloud platforms, Infrastructure as Code, and related tools

- Data engineering experience using PySpark and SparkSQL

- Client-facing experience