Senior Software Engineer - Ruby on Rails (Fullstack)

Ruby Developer; Union (NJ); On-site; USD 100,000 - 130,000; Full time

Job summary

Rail Europe is seeking a Senior Software Engineer with expertise in Ruby on Rails to join our B2C engineering team. The role requires engaging in all development stages—design, implementation, testing, and deployment. Applicants should have over 8 years of experience as software engineers, demonstrating strong skills in backend and frontend development. Fluency in English is essential. Join us to contribute to innovative solutions and continuous improvement in our products.

Qualifications

• 8+ years of progressive software engineering experience.
• Extensive knowledge and hands-on experience with Ruby and Ruby on Rails.
• Proven experience in modern frontend development.
• Fluent in English for professional communication.

Responsibilities

• Design, develop, and deliver high-quality software features.
• Participate in all stages of development lifecycle.
• Identify and solve technical challenges.
• Write clean, maintainable code aligned with best practices.
• Collaborate with product and engineering teams.

Skills

Ruby on Rails

Frontend Development

Problem Solving

Team Collaboration

Code Quality

Education

BSc in Engineering, Computer Science, or a relevant field

Tools

AI-powered developer tools

Job description

Senior Software Engineer - Ruby on Rails (Fullstack)

As a Senior Software Engineer at Rail Europe, you will be a key contributor to the B2C engineering team, taking ownership of features within Rail Europe’s public-facing products.

• Developing and Delivering Solutions: Design, develop, and deliver high-quality software features using Ruby on Rails, contributing across backend and frontend with a strong backend core.
• Full Lifecycle Participation: Participate in all stages of the development lifecycle, from technical design to implementation, testing, deployment, and monitoring.
• Problem Solving & Optimization: Identify and help solve technical challenges related to data flows, performance, scalability, and overall system reliability.
• Technical Excellence: Write clean, modular, and maintainable code, supported by appropriate testing and aligned with engineering best practices.
• Collaborative Contribution: Work closely with engineers, Product Managers, and the Engineering Manager to deliver cohesive and valuable product features.
• Knowledge Sharing & Growth: Continuously learn, share knowledge with the team, and contribute to a culture of continuous improvement.
• Innovation & Engagement: Take part in team initiatives such as monthly hack days.

Who You Are

You are a senior, hands-on software engineer with a strong product mindset.

• Fullstack Engineer: Comfortable working across backend and frontend in a Ruby on Rails environment, with a clear strength on backend topics and a genuine interest in frontend development.
• Problem Solver: Able to understand root causes, propose pragmatic solutions, and make sound technical trade-offs.
• Craft-Oriented: You value code quality, testing, and long-term maintainability.
• AI-assisted development tools: You have hands-on experience using AI-powered developer tools in your daily work. You are comfortable integrating them into your workflow and contributing to their adoption within the team.
• Product-Oriented: You care about what you build, why it is built, and the impact it has on users and the business.

Must-Haves

• 8+ Years of Engineering Experience: A minimum of 8 years of progressive work experience as a software engineer.
• Ruby and Ruby on Rails: Extensive, in-depth knowledge and hands-on experience with Ruby and Ruby on Rails.
• Frontend Development Experience: Proven experience with modern frontend development.
• English Fluency: Mandatory professional working proficiency in English (our daily working language).

Nice-to-Haves

• BSc in Engineering, Computer Science, or a relevant field.
• Experience with or strong interest in Hotwire.