Ismael Marín
León, Guanajuato, Mexico
Summary
👤
SeniorIsmael Marín is a seasoned Ruby on Rails developer and technical leader with 16 years of remote-first experience building scalable backend systems for US and LATAM SaaS. He spent the last decade evolving with Rails, shipping production code as a hands-on Tech Lead at Dealerware where he merged 370+ PRs, authored 40+ ADRs, and helped run systems processing 10,000+ transactions per hour. Comfortable negotiating API contracts with external partners, he owns integrations end-to-end and has led zero-downtime migrations and analytics integrations that enabled real-time executive dashboards. Recently he’s focused on AI Engineering infrastructure, authoring rails-ai-bridge and rails-agent-skills to make agent-assisted development practical for Rails teams. His background spans e-commerce, fintech, automotive SaaS and developer tooling, with strong foundations in DDD, distributed systems, and MCP integrations. Based in León, Mexico, he prefers roles that prioritize team growth and impact over titles, and consistently advances from mid-level to lead in every company he joins.
16 years of coding experience
Github Skills (43)
cms10
translation10
ecommerce10
internationalization10
rails10
rails-admin10
rails-engines10
ruby10
localization10
refinery-cms10
spree10
refinery10
ruby-on-rails10
commerce9
search-interface8
Programming languages (4)
Github contributions (5)
igmarin/igmarin
Jul 2020 - May 2026
Contributions:24 pushes, 3 branches in 5 years 11 months
igmarin/igmarin.github.io
Aug 2018 - Jun 2026
Contributions:6 pushes, 1 branch in 7 years 10 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.