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Senior Ruby on Rails Developer

Wroclaw, Krakow, Gdansk, Warsaw, Poland

We are looking for a Senior Ruby on Rails Developer with extensive experience building scalable, high-performance web applications. If you're passionate about clean code, solving complex problems, and mentoring others, we'd love to have you on our team.

Essential functions

  • Develop and maintain web applications using Ruby on Rails

  • Build and integrate RESTful APIs

  • Write clean, efficient, and testable code

  • Optimize performance and database queries

  • Participate in code reviews and mentor junior developers

  • Collaborate with cross-functional teams (PMs, designers, developers)

  • Contribute to technical decisions and best practices

Qualifications

  • 8+ years of experience with Ruby on Rails

  • Strong knowledge of Ruby and OOP principles

  • Experience with RESTful APIs and relational databases (PostgreSQL, MySQL, etc.)

  • Familiarity with background jobs (Sidekiq, Resque, etc.)

  • Solid testing skills (RSpec or Minitest)

  • Git and CI/CD pipeline experience

  • Good communication and teamwork skills

  • English level: Intermediate+

Would be a plus

  • Working knowledge of front-end technologies: JavaScript, HTML, CSS.

  • Familiarity with Docker and containerization.

We offer

  • Opportunity to work on bleeding-edge projects
  • Work with a highly motivated and dedicated team
  • Competitive salary
  • Flexible schedule
  • Benefits package - medical insurance, sports
  • Corporate social events
  • Professional development opportunities
  • Well-equipped office

About us

Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.

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    Grid Dynamics is an equal opportunity employer. We are committed to creating an inclusive environment for all employees during their employment and for all candidates during the application process.

    All qualified applicants will receive consideration for employment without regard to, and will not be discriminated against based on, age, race, gender, color, religion, national origin, sexual orientation, gender identity, veteran status, disability or any other protected category. All employment is decided on the basis of qualifications, merit, and business need.

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