Senior Ruby Developer

*This position is fully remote only for employment in Bulgaria. However, people can also work in one of our offices in Sofia or Varna if they prefer to.

About DataArt

DataArt is a global software engineering firm and a trusted technology partner for market leaders and visionaries. Our world-class team designs and engineers data-driven, cloud-native solutions to deliver immediate and enduring business value.

We promote a culture of radical respect, prioritizing your personal well-being as much as your expertise. We stand firmly against prejudice and inequality, valuing each of our employees equally.

We respect the autonomy of others before all else, offering remote, onsite, and hybrid work options. Our Learning and development centers, R&D labs, and mentorship programs encourage professional growth.

Our long-term approach to collaboration with clients and colleagues alike focuses on building partnerships that extend beyond one-off projects. We provide the ability to switch between projects and technology stacks, creating opportunities for exploration through our learning and networking systems to advance your career.

Position Overview

Our client is a well-established online travel company based in the Netherlands that helps hundreds of thousands of travellers find and book affordable holidays, including package deals, flights, and hotels at sharp prices. The business runs on its own in-house platform, so engineering decisions have a direct and visible effect on how customers search, compare, and book their trips. As a Senior Ruby on Rails Developer, you’ll join the engineering team as a hands-on senior contributor on Tools Portal. You’ll own significant parts of the codebase, raise the bar on code quality and engineering practices, and help shape how the internal tooling evolves.

Responsibilities

• Design, build and maintain features in a Rails 8.1 application that serves real customer traffic
• Take ownership of key areas of the platform, from design through to production
• Contribute to architecture decisions, code reviews and technical planning together with the team
• Improve the reliability, performance and maintainability of the platform, including refactoring legacy parts where it pays off
• Support deployments, monitoring and production troubleshooting across the current environments
• Build and maintain integrations with third-party travel suppliers and internal services
• Promote solid engineering practices: automated testing, CI/CD, clear documentation, sensible upgrade paths
• Partner with product and business stakeholders to turn requirements into well-scoped technical solutions

Requirements

• 5+ years of commercial experience with Ruby
• Strong, hands-on experience with Ruby on Rails in production, including recent versions (Rails 7/8)
• Hands-on experience with Google Cloud Platform (GCP), ideally including running Rails applications on it
• Solid knowledge of relational databases and SQL (e.g. PostgreSQL or MySQL)
• Experience writing automated tests with RSpec or Minitest
• A proactive, ownership-driven approach and the ability to work autonomously
• Upper-Intermediate English or higher

Nice to have

• Experience migrating applications from on-premise infrastructure to the cloud
• Experience in travel, e-commerce or booking platforms
• Experience with background job processing (Sidekiq, Solid Queue) and caching (Redis, Solid Cache)
• Hotwire (Turbo/Stimulus) on the frontend
• Experience upgrading Rails applications across major versions
• Docker and infrastructure as code (Terraform) on GCP
• Experience integrating with external APIs (suppliers, payment providers);
• Experience mentoring or onboarding other engineers

What We Offer

• Unique corporate culture – no micromanagement, friendly atmosphere, freedom, and mutual respect
• Flexible schedule – ability to change projects, to work from home, and to try yourself in different roles
• Professional Development Map – a comprehensive map of your professional development within DataArt
• We hire people not for a project, but for the company. If the project (or your work in it) is over, you go to another project or to a paid “Idle”.
• Social benefits – additional health insurance, life insurance, sports card, etc.
• Opportunity to work from another DataArt office in a different city or country (temporarily or permanently)
• Free English courses
• Cozy office with a great atmosphere
• Snacks, drinks, and fruits are always available

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