About the role

Headquarters: Remote
URL: http://onthegosystems.com

We’re looking for a Senior Ruby on Rails developer with a curious, hands-on mindset who enjoys building reliable systems, owning meaningful features, solving complex problems, and using AI tools to improve development workflows, product quality, and user experience.

What you’ll be working on:

Building and maintaining Ruby on Rails systems used at scaleOwning 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)

Curiousity about AI technologies and use AI-powered tools to improve productivity, debugging, testing, research, or development workflows.

Nice to have:

Experience with React

CI/CD, background jobs, or AWS experience

Why Join OTGS?

Stable & self-funded: Founded in 2007, profitable, and independent.

Industry leaders: Creators of WPML, the #1 multilingual plugin for WordPress, used on 1.5M+ sites

Fully remote, async-friendly: Work from anywhere within EMEA hours

Engineering-driven culture: Ownership, autonomy, testing, and thoughtful problem-solving

Fair compensation and great benefits: Designed to support your well-being both inside and outside of work.

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.

Want to make a lasting impact on a product used by thousands of real customers? We would love to hear from you.

To apply: https://weworkremotely.com/remote-jobs/onthegosystems-senior-ruby-on-rails-developer-2

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Role

Design & Creative API integration Javascript PHP Remote Collaboration Writing remote

Likely questions

Tell us about work you have done that is close to the Senior Ruby on Rails Developer role.
How would you approach your first 30 days at OnTheGoSystems?
Which of API integration, Javascript and PHP have you used recently, and what did it help you achieve?
Describe a time you solved a problem without waiting to be told exactly what to do.
How do you stay organised and communicate clearly when working remotely?

Prepare before the call

A recent example that proves your experience with API integration, Javascript and PHP.
One short story with a problem, your action, and the result.
Two examples that show the strengths listed on your CV.
A clear reason why this role and company interest you.
Your availability, preferred work style, and salary expectations.

Ask them

What would success look like in the first 90 days?
What are the main problems this hire should help solve?
How does the team give feedback and measure good work?
What does a normal working week look like for this role?

Practice line

I am interested in the Senior Ruby on Rails Developer role because I can bring practical experience in API integration, Javascript and PHP, learn the team quickly, and contribute to the outcomes OnTheGoSystems needs from this hire.

Senior Ruby on Rails Developer

About the role

Walk in with sharper answers.

Likely questions

Prepare before the call

Ask them

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