Mario Nieto
Director Of Engineering at Factorial
Greater Madrid Metropolitan Area Spain
Summary
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Senior🎓
Top SchoolMario Nieto is a Director of Engineering with over a decade of experience turning early-stage web products into scalable, revenue-generating businesses. He blends hands-on expertise in Ruby on Rails, React, TypeScript, NestJS and cloud tooling with strategic leadership in org design, DDD, and delivery predictability. At Factorial he led Talent Recruitment and Payroll from near-zero to €1M+ ARR, rebuilt legacy systems to attract 1K+ paying clients, and re-architected a long-stalled payroll platform into a monetizable product. Mario specializes in 0→1→scale transformations, creating autonomous, outcome-oriented teams and reducing firefighting through metrics-driven practices. He’s also an advocate for AI-driven developer tools and resilient architectures, constantly iterating on both product and team to ensure long-term maintainability.
10 years of coding experience
12 years of employment as a software developer
FullStack Developer - Ruby on Rails, Javascript, HTML & CSS, FullStack Developer - Ruby on Rails, Javascript, HTML & CSS at IronhackComputer Science Engineer, Computer Science Engineer at Universidad de Granada
English, French, SpanishGithub contributions (5)
mariorn/paypernews
Mar 2016 - Mar 2016
Contributions:28 commits, 4 pushes, 1 branch in 14 days
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