São Paulo, Brazil· Open to remote work
Hi, I'm Romualdo Santos.
Lead/Senior Full-Stack Software Engineer
I'm a Lead/Senior Full-Stack Software Engineer based in São Paulo, Brazil, with 15+ years of experience building high-quality, maintainable software for companies in the U.S. and beyond. I've been working fully remotely since 2020.
My focus is on delivering end-to-end solutions — from scalable backend APIs and cloud infrastructure to pixel-perfect, responsive front-ends. I specialise in React, Next.js, TypeScript, Node.js, NestJS, PostgreSQL, AWS, and serverless architectures.
Over the years I've led teams across enterprise work management (Adobe Workfront), healthcare benefits (Beanstalk Benefits, Harmonic Health), and food delivery platforms (Aurify Brands / NYC Food Delivery Marketplace). I bring both the technical depth of an individual contributor and the strategic perspective of a lead engineer.
I take quality seriously — comprehensive test coverage is a standard part of how I work, not an afterthought. I value clear communication and close collaboration with product, design, and stakeholder teams.
Main Stack
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(11 years)How I work
Flexible engagement
Available as a solo senior contractor or as a lead who brings a trusted network of engineers for larger projects — whatever fits your scope.
Remote-first
Experienced working across time zones with distributed teams. Async-friendly via Slack/Linear, highly responsive, and comfortable with weekly syncs.
Quality by default
Code reviews, automated testing, and CI/CD pipelines are part of every project — not add-ons. I use Jest, Playwright, and Storybook as standard.
Business-aware
I track metrics, validate assumptions, and communicate progress in terms that matter to stakeholders — not just technical output.