~/markos

Work History

Where I've been, what I've shipped.

Full Stack Engineer

Legible AI · Hybrid, Des Moines, IA

Jan 2025 — Present
  • Build and maintain full stack features across a FastAPI backend and modern React frontend, shipping product improvements end-to-end.
TypeScriptReactPythonFastAPI

Frontend Software Engineer

Caesars Sportsbook & Casino · Remote

Jan 2023 — Jan 2025
  • Built and maintained microservices-based frontend systems using TypeScript across a large-scale sportsbook platform.
  • Contributed to micro frontend architecture using Module Federation, ensuring seamless integration of independently deployed feature apps.
  • Championed testing standards with Cypress and GitLab CI/CD, reducing regressions and improving release confidence.
TypeScriptReactModule FederationCypressGitLab CI

Frontend Software Developer Apprentice

Caesars Sportsbook & Casino · Remote

Jun 2022 — Jan 2023
  • Collaborated with the team to develop a micro frontend using Module Federation, React, Tanstack, Ant Design, and Express.js, enabling seamless integration of a new player account management system.
  • Streamlined testing by integrating Cypress and GitLab CI/CD, automating test builds and ensuring consistent quality.
  • Automated GitLab → Slack notifications to surface outstanding MRs for timely resolution.
  • Documented 4 repositories, 20 pipelines, and 3 deployment environments to accelerate team onboarding.
ReactTypeScriptTanstackAnt DesignExpress.jsCypress

Maintenance Operations Supervisor

US Navy · Oak Harbor, WA

May 2021 — Dec 2021
  • Spearheaded daily QA audits for a team of 20 covering 8,000 maintenance tools protecting critical aircraft components.
  • Implemented standardized tool accountability procedures, reducing average turnaround time by 3 months.
  • Managed 200 transactions across 10,000 items; achieved a perfect score in a bi-annual corporate audit.

Budget Manager

US Navy · Oak Harbor, WA

Jul 2020 — Dec 2021
  • Managed a $9M account, reconciling charges across 15 purchase cards and 54 purchasing agents.
  • Streamlined reconciliation by 90% using Excel macros and formulas for monthly, quarterly, and annual reports.
  • Reduced primary purchasing agents' liability and processing time by 50% via a new SOP.

Logistics Specialist

US Navy · Oak Harbor, WA

Feb 2017 — May 2021
  • Managed record-keeping for aircraft maintenance transactions ensuring accuracy and compliance.
  • Delivered customer service to a branch of 500 personnel.
  • Conducted QA checks on $5M in inventory assets.
  • Served additionally as Government Purchase Card Holder, Hazardous Material Program Manager, and Air Mobility Command Load Planner.