Rubens Rojas

Full Stack Engineer

Rio de Janeiro, Rio de Janeiro, Brazil4 yrs 4 mos experience
AI EnabledAI ML Practitioner

Key Highlights

  • Expert in full-stack development with a focus on React and Node.js.
  • Proven track record in building impactful web and mobile applications.
  • Strong experience in collaborating with product teams for optimal outcomes.
Stackforce AI infers this person is a Full-Stack Engineer with expertise in Gaming, Blockchain, and Oil & Gas industries.

Contact

Skills

Core Skills

ReactNode.jsReact NativeVue

Other Skills

TypeScriptTailwindCSSReduxPythonDockerPostgreSQLFirebaseHTML5AINext.jsVue.jsNodeNuxtLaravelAWS

About

I’m a Senior Full-Stack Engineer with 6+ years of experience building end-to-end products. I specialize in React, TypeScript, Vue, Node.js, React Native, and have strong expertise with PostgreSQL, Supabase, and Firebase. I work across the full lifecycle—from Figma to AWS/GCP deployment—and leverage AI both to boost productivity and to integrate AI-driven features. I thrive in autonomous roles where I can collaborate closely with Product Owners to maximize impact.

Experience

4 yrs 4 mos
Total Experience
2 yrs
Average Tenure
4 mos
Current Experience

Lettrlabs

Senior Frontend Developer

Jan 2026Present · 4 mos · San Francisco, Califórnia, Estados Unidos · Remote

Proximal

Full Stack Engineer

Nov 2025Jan 2026 · 2 mos · San Francisco, Califórnia, Estados Unidos · Remote

Series entertainment

Full Stack Engineer

Dec 2023Nov 2025 · 1 yr 11 mos · Califórnia, Estados Unidos · Remote

  • Conceived, designed, and developed an HTML5 deployment infrastructure used by all game developers inside the company.
  • Designed and developed the company's React Native App, helping shape the core architecture, improve performance, and bring new ideas to life in the mobile experience.
  • Enabled significantly faster story creation by revamping the game editor experience by fixing critical bugs, expanding auto-complete capabilities, improving real-time collaboration tools, and introducing advanced visualization features with AI.
  • Developed an internal art generation management tool.
  • Tech stack: React, React Native, TypeScript, Node.js, TailwindCSS, Redux, Python, Docker, PostgreSQL, Firebase.
ReactReact NativeTypeScriptNode.jsTailwindCSSRedux+4

Dollar donation club

2 roles

Full Stack Engineer

May 2023Oct 2023 · 5 mos · Austin, Texas, Estados Unidos · Remote

ReactTailwindCssNodeNext.js

Full Stack Engineer

May 2021Jun 2023 · 2 yrs 1 mo · Austin, Texas, Estados Unidos · Remote

  • Responsible for building and maintaining engaging landing pages that captivate users with animations and ensure a seamless experience across all our features, using Vue, Nuxt, and TailwindCSS.
  • Developed all landing pages for a DAO project that collected $4 million USD in Ethereum. Built using React and Typescript.
  • Led a White Label project that provides organizations with their own donation portal for subscribers, complete with a landing page, user metrics, and payment connections. The product managed to process more than $100k in donations in its first two portals.
  • Some success cases are linked below: the San Francisco 49ers football team, with almost $40k in donations.
  • Lahaina environment disaster help, more than $60k in donations.
  • Built with Nuxt3, Vue3, TailwindCSS, and Laravel.
  • Furthermore, I have completed numerous smaller marketing projects, utilizing React, Typescript, NextJS, and TailwindCSS.
ReactVueNuxtTailwindCSSLaravel

10ten

Founding Engineer

May 2023Jul 2023 · 2 mos · San Francisco, Califórnia, Estados Unidos · Remote

  • Rebuilt the platform with a more meaningful tech stack for the product needs in a quick time frame that allowed us to enter VC programs.
  • Tech advisor for the Founder.
  • Designed mockups, features, and pages.
ReactTailwindCssNode.jsPostgreSQLAWS

Upwork

Full Stack Developer

Mar 2023Dec 2023 · 9 mos

  • Delivered responsive, pixel-perfect UIs using React, Next.js, and Tailwind CSS.
  • Built and maintained dashboards and internal tools for various clients.
  • Implemented frontend animations and enhanced UX through thoughtful UI design.
  • Debugged and resolved issues across frontend and backend codebases.
  • Worked with modern full-stack technologies, including Node.js and occasionally Vue.js.
ReactNext.jsTailwind CSSNode.jsVue.js

Wikki brasil

Full Stack Developer Internship

Apr 2020Aug 2021 · 1 yr 4 mos · Rio de Janeiro, Rio de Janeiro, Brasil · Remote

  • I developed a complex web platform for simulating Oil and Well Drilling, which required the use of extensive data validation and complex business rules. These platforms were built on demand for a major oil company.
  • In this project, I was responsible for building numerous features and UIs, including a major data validator that accommodated complex business rules. With my experience in the product, I was able to conceptualize, design, and develop new features, such as a Project Comparator that compared input data, results, and charts with other projects, making it easier for engineers to determine the best setups for their end goal. Based on this, I redesigned old UIs to improve the user experience.
  • My primary role was on the front-end, using React, Sass, and Figma for UI design. I also worked on the back-end with Django, building REST APIs. I used Jest for testing purposes to ensure that the applications were reliable and efficient.
ReactSassDjango

Adufrj - ssind - seção sindical dos docentes da ufrj

Information Technology Intern

Aug 2019Apr 2020 · 8 mos · Rio de Janeiro e Região, Brasil · On-site

  • As part of my responsibilities, I develop and implement programs aimed at automating administrative processes, streamline workflows and improve overall efficiency. In addition, I provide technical support to both internal and external users by promptly resolving issues and answering inquiries to ensure smooth operations.
  • To guarantee proper functionality, I install and configure various systems and applications on both desktop computers and mobile devices. I am also experienced in configuring printers, scanners, and other peripherals, making sure they are fully operational and integrated with the company's network.

Laboratório de matemática aplicada da ufrj

Intern

Jun 2018Jul 2021 · 3 yrs 1 mo · Rio de Janeiro e Região, Brasil · On-site

  • To ensure our database was up-to-date and our research was running smoothly, we had to process millions of lines of data every month from Brazilian bank institutions. Unfortunately, much of this data did not conform to our standards, requiring us to manually fix errors on a field-by-field basis before pushing it to the database. This process was extremely time-consuming and prone to human error, resulting in multiple delays and inaccurate data being used.
  • To solve this issue, we developed a Python script that validated and fixed data automatically. The script was broken down into three complex phases: Validation, Separation, and Deployment.
  • Thanks to the script, our research and resource management significantly improved. New data was now checked, fixed, and uploaded within a matter of days, rather than weeks or even a month, freeing up our team to focus solely on the research itself.
Python

Education

Federal University of Rio de Janeiro

Bacharelado — Ciência da Computação

Feb 2018Dec 2024

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