Senior Full-Stack Engineer: Python/FastAPI & React

EPAM Systems; Poland; Hybrid; PLN 240,000 - 320,000; Full time

Benefits offered by this job

Health insurance

Multisport

Shopping vouchers

Referral bonuses up to $2,000

Job summary

EPAM Systems is expanding its engineering team and seeking a Senior Full-stack Developer to ship Python/FastAPI backend and React/TypeScript frontend features. You will work with PostgreSQL, OpenSearch, and Databricks to improve integrations and performance.

You will implement APIs, optimize queries, and own product features in a fast-paced startup-style environment. Hybrid work arrangement with potential remote work within Poland and opportunities to work abroad.

Qualifications

• 5+ years of production experience with Python, FastAPI, and SQL.
• Comprehensive expertise in web apps, API design, and integration development.
• High-load database handling and query performance optimization.
• Experience with TypeScript and React, plus willingness to work full-stack.
• Hands-on exposure to GenAI engineering tools, ideally Claude Code.
• Effective communication skills and proactive execution, able to operate independently and as part of a team.
• Ability to deal with ambiguity and deliver without constant direction in a fast-moving startup environment.
• English proficiency at B2 (Upper-Intermediate) level or higher.

Responsibilities

• Implement and maintain web applications with Python/FastAPI and SQL.
• Create APIs and integrations that support high-load database operations.
• Analyze and optimize query performance across production systems.
• Build front-end components using TypeScript and React.
• Adopt GenAI engineering tools to improve development workflows.
• Collaborate with the team while progressing autonomously on your assignments.
• Communicate proactively with team members and stakeholders.
• Own product features and drive impact beyond ticket completion.
• Deliver results while navigating ambiguity in a fast-paced startup environment.

Skills

Python

FastAPI

SQL

TypeScript

React

GenAI tools

Communication

English (B2+)

Tools

Next.js

Storybook

Playwright

Radix UI

Zustand

PostgreSQL

OpenSearch

Databricks

PySpark

Job description

EPAM Systems is expanding its engineering team and seeking a Senior Full-stack Developer to ship Python/FastAPI backend and React/TypeScript frontend features. You will work with PostgreSQL, OpenSearch, and Databricks to improve integrations and performance.

You will implement APIs, optimize queries, and own product features in a fast-paced startup-style environment. Hybrid work arrangement with potential remote work within Poland and opportunities to work abroad.