Remote Ruby Engineer for AI Training & Backend APIs

Alignerr Corp.; España; Remote; EUR 34,000 - 55,000; Part time

Job summary

Alignerr is seeking a skilled Ruby Software Engineer to design, implement, and optimize backend services and APIs in a fully remote, hourly contract role. You will work on AI training data pipelines and production-grade code, collaborating asynchronously with researchers and engineers across time zones.

The position emphasizes strong Ruby expertise, experience with RESTful APIs, and the ability to work independently on complex backend challenges while delivering high-quality software on a

Qualifications

• 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.

Responsibilities

• 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.

Skills

Ruby

Backend development

RESTful APIs

Data-driven systems

Independent work

Tools

Ruby on Rails

Job description

Alignerr is seeking a skilled Ruby Software Engineer to design, implement, and optimize backend services and APIs in a fully remote, hourly contract role. You will work on AI training data pipelines and production-grade code, collaborating asynchronously with researchers and engineers across time zones.

The position emphasizes strong Ruby expertise, experience with RESTful APIs, and the ability to work independently on complex backend challenges while delivering high-quality software on a