2026 — Present
Open-Source Contributor
IndependentContributing focused fixes to established TypeScript projects across accessibility, browser automation, application persistence, and tool reliability.
About / Oniel Alejo Feliz
Dependable engineering, shaped around real use.
I’m Oniel, a software engineer focused on TypeScript, Node.js, React, Next.js, and PostgreSQL. I work well in existing codebases where behavior, data boundaries, and regression risk matter.
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
Previous experience
AI Training Contributor
OutlierWorked independently across changing task formats and evaluation standards, strengthening written reasoning, consistency, and quality-control habits.
Previous experience
Computer Repair Technician
Local computer repair shopDiagnosed hardware and software problems, completed operating-system and component repairs, and explained practical solutions clearly to customers.
Education
Software Development Studies
ITLA · Dominican RepublicCompleted software-development coursework at Instituto Tecnológico de Las Américas.
Current focus
The systems behind polished product experiences.
- 01Deployed Next.js applications
- 02Accessible interface systems
- 03PostgreSQL-backed product architecture
- 04Frontend motion and interaction design
Tampa, Florida · Available for opportunities
Need an engineer who can enter an existing codebase safely?
I’m open to software-engineering, full-stack, product-engineering, and TypeScript roles in Tampa or remote. I also take scoped maintenance and reliability work. I can work in the United States without employer sponsorship.