Senior Full-Stack Engineer: Remote/Hybrid, GenAI & High-Load

EPAM Systems; Poznań; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Hybrid work model

Remote work in Poland

Employee Stock Purchase Plan

Health insurance

Relocation assistance

Job summary

EPAM Systems is seeking a Senior Full-stack Developer to help build a new product using Python and FastAPI for the backend, React/TypeScript for the frontend, and PostgreSQL/OpenSearch for the database stack.

The product runs in a multi-cloud environment and relies heavily on Databricks. The role includes API design, performance tuning, and collaborating with a cross-functional team in a hybrid Poland-based setup.

Qualifications

• 5+ years of hands-on production experience with Python, FastAPI, and SQL.
• Strong expertise in web application development, API design and integrations.
• Experience managing high-load databases and optimizing query performance.
• Front-end experience with TypeScript and React; comfortable with full-stack work.
• Experience using GenAI tools, Claude Code preferred.
• Excellent communication and proactive mindset; able to work solo or in a team.
• English fluency at B2 level or above.

Responsibilities

• Build and maintain web applications with Python/FastAPI and SQL
• Design APIs and integrations that handle high-load database operations
• Improve query performance across production systems
• Support front-end development efforts using TypeScript and React
• Use GenAI engineering tools to enhance development workflows
• Collaborate with team and work independently on tasks
• Maintain proactive communication with team members and stakeholders
• Own product features and contribute beyond tickets
• Handle ambiguity and deliver results in a fast-paced startup setting

Skills

Python

FastAPI

SQL

API design

TypeScript

React

GenAI

Communication

English

Tools

PostgreSQL

OpenSearch

Databricks

Claude Code

Job description

EPAM Systems is seeking a Senior Full-stack Developer to help build a new product using Python and FastAPI for the backend, React/TypeScript for the frontend, and PostgreSQL/OpenSearch for the database stack.

The product runs in a multi-cloud environment and relies heavily on Databricks. The role includes API design, performance tuning, and collaborating with a cross-functional team in a hybrid Poland-based setup.