Rubens Rojas

01About

Let’s talk

PRODUCT-MINDED FULL-STACK ENGINEER

Rubens
Rojas.

I take products from idea to production. Design, front-end, back-end, infrastructure, and the deploy that puts it in people’s hands.

  • 6+YEARS SHIPPING
  • 5US STARTUPS, REMOTE
  • Idea → ProdEND-TO-END OWNERSHIP
See experienceor keep scrolling

02Experience

Let’s talk

CAREER / 2018–NOW

Experience.

Six years with US startups, close to the product—from the first idea to the deploy.

ALL ROLES

CURRENT → EARLIER

  1. — PRESENT

    LettrLabs

    Senior Frontend Developer

    Started on the frontend; now own customer-facing fixes, features, and improvements across the full stack, working directly with Customer Experience and Sales.

  2. —

    Proximal

    Full Stack Engineer

    Built reinforcement learning environments for LLMs.

  3. —

    Series Entertainment

    Full Stack Engineer

    Built the HTML5 deployment system all game developers used to publish, and the company’s React Native app. Improved story-creation tools with AI-assisted visualization.

  4. —

    Stealth AI Startup

    Founding Engineer

    Designed product mockups, features, and pages, rebuilt the platform around the product’s needs, and advised the founder on technical decisions.

  5. —

    Upwork

    Full Stack Developer

    Built responsive interfaces, dashboards, and internal tools for clients with React, Next.js, and Tailwind CSS.

  6. —

    Dollar Donation Club

    Full Stack Engineer

    Led a white-label donation platform; its first two portals processed more than $100,000 in donations. Built landing pages for a DAO project that collected $4M in Ethereum.

  7. –

    Wikki Brasil · LabMA / UFRJ · Adufrj

    Drilling simulation software with React and Django, Python data automation that cut prep from weeks to days, and IT support.

EDUCATION

B.Sc. Computer Science, Universidade Federal do Rio de Janeiro (UFRJ), 2018–2024.

03Toolkit

Let’s talk

TOOLS / PRACTICE

Design. Build.
Ship.

The whole path from Figma to production—front-end, back-end, and infrastructure. Years of hands-on use per tool.

  1. Front-end

    The product people touch

    • JavaScript, 6 years
    • React, 6 years
    • TypeScript, 6 years
    • Tailwind CSS, 5 years
    • Vue, 4 years
    • Next.js, 3 years
    • Nuxt.js, 2 years
    • React Native, 1 year

  2. Back-end & infra

    The systems behind it

    • Node.js, 5 years
    • PostgreSQL, 5 years
    • Docker, 4 years
    • Python, 2 years
    • GCP, 2 years
    • AWS, 1 year
    • Laravel, 1 year
    • PHP, 1 year
    • Firebase, 1 year

  3. Other

    Product, design and workflow

    • Git, 6 years
    • Figma, 2 years
    • AI-Powered Product Development, 2 years

Different stacks, same job: get the product into people’s hands.

04Contact

START A CONVERSATION

Got an idea?
Let’s ship it.

I can take it from first sketch to production—or plug into your team wherever you need me.

REACH ME AT

ELSEWHERECODE · CAREER