Senior Backend Engineer (Ruby, Kotlin) – Voyager Team (Bridge) Budapest, Hungary
Lietuvos Geležinkeliai3 months ago
Remote, Hungary or Budapest, HungarySenior
Responsibilities
- Maintain and improve Bridge’s mission-critical Ruby on Rails monolith.
- Diagnose and resolve critical issues in a complex, undocumented production system.
- Develop Java or Kotlin Spring Boot REST APIs.
- Ensure new Ruby and Kotlin features integrate seamlessly across the platform.
- Understand system architecture and connect legacy application logic with modern services.
- Contribute to company-wide technical decisions and support teammates in a collaborative engineering culture.
Requirements
- Senior-level experience working with Ruby on Rails and Java or Kotlin-based backend systems.
- Experience with Spring Boot, REST API development, and PostgreSQL.
- Ability to navigate complex or undocumented codebases and handle production crises independently.
- Broad, polyglot technology experience with the ability to evaluate technology trade-offs.
- Strong high-level architectural and conceptual thinking.
- Direct communication style and comfort with constructive technical debate.
Benefits
- Remote work or use of the Allee office in Budapest with flexible scheduling and an async, trust-based culture.
- Competitive gross salary of 1.7–2.1M HUF per month depending on seniority, plus a company-performance bonus.
- Comprehensive healthcare package provided by Medicover.
- SZÉP card and other fringe benefits.
- GitHub Copilot and other AI assistance tools provided.
- Mentorship from Guild Leads and long-time contributors.
- Autonomy without time tracking or micromanagement.
Tech Stack
AWSDatadogGitHub ActionsJavaKotlinPostgreSQLReactRubyRuby on RailsSpinnakerSpring BootTerraformTypeScript
Categories
About Lietuvos Geležinkeliai
Lietuvos Geležinkeliai (LTG) is Lithuania’s state-owned railway group, operating passenger and freight services and managing the national rail infrastructure plus related engineering and IT systems. It earns revenue from transport services and infrastructure management, including through subsidiaries LTG Link, LTG Cargo, and LTG Infra. Headquartered in Vilnius, it is the largest railway group in the Baltic States and delivers strategic rail projects that connect Lithuania domestically and internationally.