About The Role
What if your Ruby expertise could directly influence how AI understands and writes production-grade software for developers around the world? We're looking for experienced Ruby Software Engineers to help design, evaluate, and improve real-world software systems used in AI training and data-driven workflows.

Software Engineer – Ruby (AI Training)
What if your Ruby expertise could directly influence how AI understands and writes production-grade software for developers around the world? We're looking for experienced Ruby Software Engineers to help design, evaluate, and improve real-world software systems used in AI training and data-driven workflows.

This is a fully remote, versátil contract role built for working engineers who want to do meaningful, high-impact work on their own schedule — no office, no commute, no rigid hours.

Organization: Alignerr

Type: Hourly Contract

Location: Remote

Commitment: 10–40 hours/week

What You'll Do

Develop and maintain backend services and APIs using Ruby and Ruby-based frameworks

Review, analyze,



and improve existing codebases for correctness, performance, and maintainability

Evaluate realistic software engineering scenarios to help create and validate high-quality technical datasets

Collaborate asynchronously with researchers and engineers to support AI training and evaluation efforts

Apply production-grade engineering thinking to real-world backend and API problems

Who You Are

2+ years of professional software engineering experience

Strong proficiency in Ruby and backend development concepts

Comfortable working with production codebases, RESTful APIs, and data-driven systems

Detail-oriented and analytical — you can clearly explain your technical decisions in writing

Self-motivated and dependable when working independently without close supervision

Nice to Have

Experience with Ruby on Rails or other Ruby-based frameworks

Familiarity with AI tools, data pipelines, or technical evaluation workflows

📌 Software Engineer (Madrid)
🏢 Alignerr
📍 Madrid