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Principal Software Engineer (Ruby Expert)

Warsaw, Masovian Voivodeship, pl💼 Full-time🗓 2026-03-26 → 2026-08-01

Core

Architect and implement scalable, high-performance software solutions using Ruby and Ruby on Rails, leading technical strategy and mentoring the team.

Role type

Principal Software Engineer (Ruby Expert)

Builds

Scalable, high-performance software solutions and new features/products

Domain

Web development / Distributed systems

Deliverable

production ML models | product features | infrastructure

Required skills

Ruby, Ruby on Rails, PostgreSQL, MySQL, Git, TDD, AWS, Azure, GCP, Software design patterns, Scalable architecture

Preferred skills

Cloud computing platforms, Agile methodologies, Technical leadership, Hands-on coding

Technologies

Ruby, Ruby on Rails, PostgreSQL, MySQL, Git, AWS, Azure, GCP

Responsibilities

Architect and implement scalable software solutions, Lead design and development of new features, Mentor and guide junior developers, Conduct code reviews, Optimize existing systems for performance, Contribute to technology stack evolution, Troubleshoot complex production issues

Seniority

Principal, strategy & mentorship

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