Senior Ruby on Rails Engineer — Remote (Mexico)

MagmaLabs; United States; Remote; USD 48,000 - 64,000; Full time

Job summary

MagmaLabs is seeking a Senior Software Engineer (Ruby on Rails) for our fully remote team. This role targets candidates in Mexico and focuses on building scalable backend systems for healthtech, e-commerce, fintech, and more.

Lead architectural design, optimize PostgreSQL, and integrate diverse APIs while mentoring teammates and ensuring robust, testable code in a modern Rails environment.

Qualifications

• 7+ years software development experience, with at least 5 years in Ruby on Rails.
• Strong PostgreSQL skills including schema design and query optimization.
• Frontend basics and integrations with third-party services.
• Experience with background job processing (Sidekiq) and secure coding.
• Excellent English communication and remote collaboration capability.
• Experience with Agile methodologies.

Responsibilities

• Lead architecture, design, and evolution of scalable Rails backend applications.
• Optimize database performance and design robust APIs and integrations.
• Ensure code quality via automated tests and participate in reviews.
• Mentor engineers and promote knowledge sharing across time zones.
• Contribute to infra and deployment processes (Docker, Kubernetes, CI/CD).
• Document technical decisions and collaborate with product managers.

Skills

Ruby on Rails

PostgreSQL

Git

English communication

Remote collaboration

Tools

Sidekiq

Redis

Docker

Kubernetes

RSpec/Minitest

Job description

MagmaLabs is seeking a Senior Software Engineer (Ruby on Rails) for our fully remote team. This role targets candidates in Mexico and focuses on building scalable backend systems for healthtech, e-commerce, fintech, and more.

Lead architectural design, optimize PostgreSQL, and integrate diverse APIs while mentoring teammates and ensuring robust, testable code in a modern Rails environment.