Senior Ruby on Rails Developer
OnTheGoSystems • Czechia • Serbia
No Relocation
Posted: May 18, 2026
Job Description
Senior Ruby on Rails Developer
We’re looking for a Senior Ruby on Rails developer with a curious, hands-on mindset who enjoys owning meaningful features, building reliable systems, and solving problems across the development process.
What you’ll be working on:
- Building and maintaining Ruby on Rails systems used at scale
- Owning features from implementation to production
- Writing and maintaining automated tests (unit, integration, E2E)
- Investigating production issues, debugging complex problems, and helping design practical solutions
- Improving performance, reliability, and maintainability
What we’re looking for:
To succeed in this role, you’ll have:
- 4+ years of professional experience with Ruby on Rails
- Experience building and running production systems
- Strong backend skills, including databases, performance, and API design
- Solid experience writing and maintaining automated tests (including E2E)
- Curiosity and adaptability, with a willingness to learn new tools, technologies, and step into unfamiliar areas when needed
Nice to have:
- Experience with React
- CI/CD, background jobs, or AWS experience
You’ll enjoy this role if you:
- Take pride in ownership and accountability
- Care about testing and long-term code quality
- Are motivated by solving problems in complex systems
- Enjoy collaborative environments where kind and experienced people learn, investigate issues, and solve problems.
Additional Content
Senior Ruby on Rails Developer
We’re looking for a Senior Ruby on Rails developer with a curious, hands-on mindset who enjoys owning meaningful features, building reliable systems, and solving problems across the development process.
What you’ll be working on:
- Building and maintaining Ruby on Rails systems used at scale
- Owning features from implementation to production
- Writing and maintaining automated tests (unit, integration, E2E)
- Investigating production issues, debugging complex problems, and helping design practical solutions
- Improving performance, reliability, and maintainability
What we’re looking for:
To succeed in this role, you’ll have:
- 4+ years of professional experience with Ruby on Rails
- Experience building and running production systems
- Strong backend skills, including databases, performance, and API design
- Solid experience writing and maintaining automated tests (including E2E)
- Curiosity and adaptability, with a willingness to learn new tools, technologies, and step into unfamiliar areas when needed
Nice to have:
- Experience with React
- CI/CD, background jobs, or AWS experience
You’ll enjoy this role if you:
- Take pride in ownership and accountability
- Care about testing and long-term code quality
- Are motivated by solving problems in complex systems
- Enjoy collaborative environments where kind and experienced people learn, investigate issues, and solve problems.