Senior Python Developer

Quick Facts

• Role: Senior Python Developer

• Environment: Startup-like, high ownership, fast feedback, demanding clients

Description

You will partner with clients to analyze business needs, challenge requirements, and propose scalable solutions. You will own complex features end-to-end—from architecture and implementation to testing and automated deployment—while designing APIs, system architecture, and data models for high-load, data-intensive systems.

Responsibilities

• Act as a technical partner for clients: analyze needs and propose effective, scalable solutions

• Take ownership of complex features from concept and architecture through implementation, testing, and automated deployment

• Design system architecture, APIs, and data models for high-load, data-intensive systems

• Deliver core and business-critical components

• Operate in a dynamic startup-style environment with changing priorities and tight deadlines

• Identify risks, bottlenecks, and technical debt; drive improvements

• Ensure high code quality, performance, and reliability

• Support and mentor other developers to raise engineering standards

Requirements

• 5+ years of commercial software development experience

• Strong professional experience with Python

• Excellent knowledge of Python 3.11+ (typing, dataclasses, modern best practices)

• Production experience with modern Python frameworks (FastAPI preferred, Falcon welcome)

• Async SQLAlchemy 2.0 experience

• Strong expertise in API design (REST, GraphQL)

• Solid understanding of databases and data-driven systems (relational, document, search, key-value stores)

• Advanced knowledge of software engineering principles (OOP, SOLID, YAGNI, TDD)

• Extensive experience with unit testing (pytest), CI/CD pipelines, Docker, and deployments

• Proven ability to build efficient, low-latency, scalable systems

• Comfortable with tight deadlines, pressure, and frequently evolving requirements

• Very good written and spoken English; strong communication

Benefits

• Challenging projects with real business impact

• Startup-like environment with fast decisions, autonomy, and responsibility

• 100% remote or office in Poland (Wrocław / Zielona Góra)

• Sport subscription

• Private healthcare