About / Oniel Alejo Feliz

Dependable engineering, shaped around real use.

I’m Oniel, a full-stack developer who enjoys building web products that balance dependable engineering with clear, accessible design.

I work across the application stack—from responsive React interfaces to authentication, relational data modeling, testing, and deployment. I’m especially interested in products where good technical decisions directly improve the user experience.

How I work

Product thinking without losing engineering rigor.

I like to begin with the decision a user is trying to make, then design the smallest system that supports it clearly. That means deliberate scope, typed boundaries, predictable data ownership, and interfaces that remain useful across devices and input methods.

The work is not finished when a screen looks right. I validate behavior with automated tests, keyboard and responsive review, production builds, and deployment checks—then document the tradeoffs honestly.

Experience + education

Technical depth, built from real work.

Location
Tampa, Florida
Work authorization
U.S. permanent resident · No sponsorship required
Languages
English + Spanish
01

2026 — Present

Open-Source Contributor

Independent

Contributing focused fixes to established TypeScript projects across accessibility, browser automation, application persistence, and tool reliability.

02

Previous experience

AI Training Contributor

Outlier

Worked independently across changing task formats and evaluation standards, strengthening written reasoning, consistency, and quality-control habits.

03

Previous experience

Computer Repair Technician

Local computer repair shop

Diagnosed hardware and software problems, completed operating-system and component repairs, and explained practical solutions clearly to customers.

04

Education

Software Development Studies

ITLA · Dominican Republic

Completed software-development coursework at Instituto Tecnológico de Las Américas.

Current focus

The systems behind polished product experiences.

  1. 01Production-ready Next.js applications
  2. 02Accessible interface systems
  3. 03PostgreSQL-backed product architecture
  4. 04Frontend motion and interaction design

Tampa, Florida · Available for opportunities

Interested in building a clear, useful web product?

I’m seeking a junior full-stack or software-engineering role in Tampa or remote. I can work in the United States without employer sponsorship.