Senior Full-Stack Engineer AI-Driven Cloud Platform

your Jared; Kraków; Hybrid; PLN 210,000 - 320,000; Full time

Benefits offered by this job

Health insurance

Multisport

Shopping vouchers

Employee Stock Purchase Plan (15% off)

Job summary

your Jared is seeking a Senior Full-stack Developer to build a product using Python/FastAPI on the backend and React/TypeScript on the frontend. The stack includes PostgreSQL, OpenSearch, and Databricks in a multi-cloud setup, with a strong emphasis on GenAI-enhanced workflows.

You will design and maintain APIs, optimize high-load queries, and contribute across the stack in a hybrid, startup-like environment. English proficiency is required (B2+).

Qualifications

• 5+ years of production experience with Python, FastAPI, and SQL.
• Experience in web application development, API design, and integrations.
• Proficiency in handling high-load databases and query performance optimization.
• Front-end development with TypeScript and React; full-stack willingness.
• Hands-on experience with GenAI engineering tools, Claude Code preferred.
• Strong communication and proactive work style.

Responsibilities

• Develop and maintain web applications using Python/FastAPI and SQL.
• Design APIs and integrations to support high-load database operations.
• Optimize query performance across production systems.
• Contribute to front-end development using TypeScript and React.
• Apply GenAI engineering tools to improve development workflows and collaborate with the team.

Skills

Python

FastAPI

SQL

API design

TypeScript

React

GenAI tools

Claude Code

Communication

Ambiguity handling

Tools

PostgreSQL

OpenSearch

Databricks

PySpark

Job description

your Jared is seeking a Senior Full-stack Developer to build a product using Python/FastAPI on the backend and React/TypeScript on the frontend. The stack includes PostgreSQL, OpenSearch, and Databricks in a multi-cloud setup, with a strong emphasis on GenAI-enhanced workflows.

You will design and maintain APIs, optimize high-load queries, and contribute across the stack in a hybrid, startup-like environment. English proficiency is required (B2+).