About

Hello, my name is Mark Hernandez (lion-byte). I use they/them pronouns.

I am a software developer, and I focus on the front-end, accessibility, and modern web technologies. I strive to continuously grow and improve my skill-sets to provide a smooth experience for users.

Work History

• Freelance Front-End Developer

  Jan 2026 — Current

• Cloud Native Software Engineer

  Rackspace Technology

  Oct 2021 — Jun 2025

  Project: Offline-Capable Garment Tracking System

  • Architected a highly resilient cloud-to-local database sync for low-bandwidth environments (cruise ships), engineering an automated, compressed transfer pipeline via an S3-compatible architecture.
  • Engineered an automated data-sync process that dynamically evaluates database schemas to process updates in strict order, minimizing data de-sync in low-bandwidth environments.
  • Optimized frontend asset bundles to drastically reduce build sizes, eliminating visual stuttering and ensuring a smooth user experience when navigating feature modules.

  Project: Critical Infrastructure Modernization

  • Refactored the proof-of-concept infrastructure environment into a production-ready deployment within the 3-month deadline.
  • Created a living document within the infrrastucture codebase, ensuring client retained full ownership of the system architecture post-handover.
  • Facilitated a seamless knowledge transfer with the living documentation and troubleshooting guide created to empower the client team to maintain and scale the environment independently.

• Software Engineer

  gWorks

  Oct 2019 — Jun 2021

  • Drove the corporate adoption of TypeScript, static analysis, code linting, and unit testing across front-end layers, slashing production bug rates and accelerating long-term feature velocity.
  • Spearheaded frontend build modernization, guiding an incremental migration from a legacy AMD module system to a unified ES Module and Webpack ecosystem, boosting daily developer efficiency.

• Software Application Developer

  National Indemnity Company

  Mar 2019 — Oct 2019

  • Maintained and patched a suite of internal products for NICO/BHHC enterprise ecosystems.
  • Collaborated closely with QA divisions to estimate work complexities, review database scripts, and resolve reported bugs under tight tracking deadlines.

• Undergraduate Research Assistant

  University of Nebraska–Lincoln

  May 2018 — Aug 2018

  • Assisted in undergraduate research projects under Professor Myra Cohen.
  • Held weekly project progress meetings.
  • Continued development on audible JavaScript heuristics.
  • Lead development for UNL iGEM collaboration project.

• Undergraduate Teaching Assistant

  University of Nebraska–Lincoln

  Jan 2017 — May 2018

  • CSCE 156 - Computer Science II (Java)
  • I assisted students in their coursework for assignments and weekly lab sessions.
  • I held regular office hours in the Student Resource Center.
  • I gave feedback to Graduate Teaching Assistants (GTAs) based on students' comments.