Senior Ruby Developer

We are looking for a Senior Ruby Developer to join our dynamic and collaborative team.

The client is an American multinational enterprise specializing in software solutions, offering a cloud-based platform that facilitates the seamless automation, integration, and coordination of artificial intelligence (AI) functionalities across a wide range of applications, data environments, and IT systems.

It is a hybrid position with required visits to the office in Wroclaw, Krakow, Gdansk, Warsaw, Katowice, Lodz or Poznan.

Responsibilities

• Develop and maintain scalable, high-performance web applications using Ruby and Rails
• Optimize complex database queries and ensure efficient use of PostgreSQL
• Design and implement clean, maintainable code with strong adherence to TDD/BDD principles using RSpec
• Collaborate with cross-functional teams to define and deliver technical solutions that align with business goals
• Conduct code reviews and mentor junior developers to uphold quality standards
• Address scalability and performance issues, implementing enhancements to improve reliability
• Work closely with product owners to translate requirements into technical implementations
• Debug and troubleshoot production issues, identifying root causes and implementing responsive fixes
• Participate in architectural design and contribute to long-term system improvements
• Oversee deployment processes and ensure application stability in production environments
• Stay updated on emerging technologies and practices to bring innovative solutions to the team

Requirements

• Strong experience with Ruby and the Rails ecosystem (3+ years)
• Proven ability to build scalable web applications
• Deep hands-on expertise in PostgreSQL, including query optimization and direct SQL usage
• Solid experience with RSpec and TDD/BDD testing practices
• Comfortable working independently with minimal supervision
• English level of minimum B2 (Upper-Intermediate) for effective communication

Nice to have

• Experience using Docker for containerization
• Familiarity with Redis for caching or real-time data handling
• Exposure to ClickHouse for analytics or event logging
• Basic frontend experience with JavaScript and frameworks like React, Angular, or Vue.js
• Experience with background job processing tools like Sidekiq or RabbitMQ
• Understanding of CI/CD pipelines and Git-based workflows
• Good communication and collaboration skills

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
  • We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
  • We will reach out to selected candidates exclusively

EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.