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September 1, 2026

Lead Ruby Developer

Senior • Remote

Krakow, MA, Poland

We are looking for a Lead Ruby Developer to join a collaborative team. This is a hybrid role with required office visits in Wroclaw, Krakow, Gdansk, Warsaw, Katowice, Lodz, or Poznan.

Responsibilities

  • Lead the design and development of scalable web applications using Ruby and the Rails ecosystem.
  • Apply deep expertise in PostgreSQL, including query optimization and direct SQL usage, to ensure efficient data management.
  • Implement and maintain robust testing practices using RSpec and TDD/BDD methodologies.
  • Work independently and take initiative in solving technical challenges with minimal supervision.
  • Provide technical leadership as a Tech Lead or Team Lead, addressing performance issues and preventing burnout within the team.
  • Drive career development and growth plans for team members, fostering a culture of continuous improvement.

Requirements

  • At least 5 years of professional experience in Ruby development or related roles.
  • Minimum of one year in a people management or team leadership position.
  • Proficiency in using Docker for containerization and deployment.
  • Familiarity with Redis for caching strategies or real-time data processing.
  • Exposure to ClickHouse for analytics or event logging solutions.
  • Basic frontend development experience with JavaScript and frameworks such as React, Angular, or Vue.js.
  • Experience with background job processing tools like Sidekiq or RabbitMQ.
  • Understanding of CI/CD pipelines and Git-based version control workflows.
  • Strong communication and collaboration skills for effective teamwork.
  • Fluent written and spoken English at a B2+ level or higher.

We offer

We gather like-minded people:

  • Top tech minds driving innovation in AI, cloud and digital platform modernization.
  • Supportive team and agile, startup-like culture.
  • Hybrid-by-design mode and opportunity to work remotely within Poland.
  • Chance to work abroad for up to 60 days annually.
  • Business-driven relocation opportunities.

We provide growth opportunities:

  • Career development programs.
  • Thought leadership, mentoring, soft skills and well-being programs.
  • Certification (Anthropic, Gemini, GCP, Azure, AWS).
  • English classes.

We cover it all:

  • Stable pay.
  • Participation in the Employee Stock Purchase Plan with a 15% discount.
  • Benefits package (health insurance, multisport, shopping vouchers).
  • Referral bonuses up to $2,000.
  • Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more.
  • Corporate, social and well-being events.

Please note

  • Benefits listed above are available to employees only.
  • Contractors are welcome; terms of B2B cooperation agreements are agreed individually.
  • Only selected candidates will be contacted.

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