Harlley Bastos
Harlley Bastos

About

I'm Harlley Bastos, a senior full stack engineer from Brazil. For 7+ years I've been building and scaling web applications for companies in the US and Brazil (Ruby on Rails, Node.js, React, AWS), working remotely.

The work I care about is the kind that runs a business: e-commerce taking orders, platforms generating leads, production systems that stay up.

Outside work, I build games in C++ from scratch, with no third-party engine. Details on the games page. I also wrote Vaga na Fonte, a resume and interview kit for experienced developers (in Portuguese).

Working with: Ruby on Rails, Node.js, React, Next.js, TypeScript, PostgreSQL, AWS, Docker.

Download résumé (PDF)

Experience

LakeFusion, Senior Full Stack Engineer

Mar 2026 – Aug 2026 · Remote

  • Worked on LakeGraph, LakeFusion's Databricks-native graph analytics platform: graph modeling, querying, and visualization on top of the lakehouse.
  • Full stack work end to end, from the graph exploration UI to the services behind it.

John Deere

Dec 2025 – Feb 2026

  • Built internal engineering tooling used by development teams.

DevSquad, Senior Full Stack Engineer

Sep 2023 – Jan 2025 · Remote

  • Cut API response times on client Rails products by fixing N+1 queries and adding missing DB indexes, so data-heavy pages loaded fast again.
  • Migrated legacy jQuery dashboards to React, turning fragile UI into components the team could extend without fear of breaking things.
  • Held the quality bar across client teams through steady code review and pair programming.

One Community Global, Full Stack Developer

Feb 2023 – Sep 2023 · Remote

  • Made the organization's dashboard faster through database query optimization and page caching.
  • Mentored junior developers on Rails and React, raising the bar of the code the team shipped.

Pecege, Software Engineer

Feb 2020 – Feb 2023 · Remote

  • Rebuilt a legacy jQuery portal in React for thousands of active users, moving the product off a codebase that had become unmaintainable.
  • Sped up data-heavy charts with React Query caching and prefetching.
  • Introduced TypeScript on critical APIs to catch bugs before they reached production.

Education

Harvard University (CS50x, Introduction to Computer Science)

2022

Centro Universitário Claretiano (Systems Analysis and Development)

2019 – 2021

Contact

Have a project in mind, or a role? Write me: contato@harlleybastos.com.br