Justin J. De La Cruz

Founder @ Nytsu | Building Hardware + Software Products | Full-Stack Product Developer

San Juan, Puerto Rico

About

I'm building Nytsu, a product studio in Puerto Rico dedicated to designing and shipping hardware and software products with craft and end-to-end ownership. Currently shipping JustIn, a fencing training and analytics platform that captures what happens in training and unlocks week-over-week progress visibility for athletes. It's a product born from competing at high levels and understanding the gap in athletic tech for bilingual markets. My background spans full-stack development, embedded systems, hardware design, and brand strategy. I'm equally comfortable in code and CAD, because meaningful products require understanding both. I'm drawn to problems at the intersection of technology, design, and human behavior. I believe lasting products come from deep domain expertise, end-to-end ownership, and a commitment to craftsmanship. That's the Nytsu philosophy. Let's connect if you're interested in: hardware + software product development, fencing tech, or building products that last.

Experience

  • Founder at Nytsu
    Jan 2025 - Present · 1 yr 6 mos

  • Software Developer at INprende
    Mar 2023 - Feb 2026 · 3 yrs

  • Disney College Program at The Walt Disney Company
    Jun 2022 - Dec 2022 · 7 mos

  • Web Developer Consultant at SMX Services & Consulting, Inc.
    Aug 2021 - Feb 2022 · 7 mos

    - Collaborated with an insurance company IT Department to develop a web-based Insurance Software application on OutSystems - Handled with SQL objects and procedures to ensure stability and data management - Enhance UX (user experience) and website performance by better database management and designing requested features from clients and personal

  • CO-OP - Software Development at FirstBank
    Feb 2021 - Aug 2021 · 7 mos

    - Collaborated closely with the development team to resolve and implement requests from various departments. - Developed web-based applications using OutSystems for task automation solutions, streamlining processes and increasing efficiency. - Helped to develop an automated data validation program to compare data on separate documents and database. - Fixed performance and UI (user interface) related bugs.