Hi, I'm Donald Vu
Application Support Engineer — production reliability & verified fixes
- Nginx
- Docker
- Linux
- Grafana/Prometheus
- SQL
- Python
Projects
Application Support Engineer Projects
Incident-driven labs: Nginx ↔ Flask ↔ Postgres, Loki/Grafana dashboards, runbooks, and post-incident reports showcasing triage & reliability skills.
Data & Operations Analyst Projects
Dashboards, automation tools, and SQL-based workflows built to optimize operations and enhance data visibility.
Skills & Expertise
Application Support & Troubleshooting
Monitoring & Observability
Scripting & Automation
Communication & Documentation
Work Experience
Data Analyst (Application Support)
CoreLogic
Irving, TX
December 2023 – May 2025
- Owned an Excel/VBA automation for scheduled data pulls; monitored run logs, triaged failures, reproduced defects, and shipped script fixes under daily SLAs.
- Reproduced errors with test inputs, patched the VBA module/configs, and verified outputs, enabling Client Account Managers to self-serve lien data.
- Authored a short runbook (steps, error glossary, log locations) so Client Account Managers could run pulls and re-runs independently.
Business Operations Analyst
CoreLogic
Irving, TX
August 2021 – December 2023
- Service Transfer SME: operated an Excel/VBA service-transfer tool to migrate prior-servicer → new-servicer loan numbers and key dates; validated mappings and spot-checked outputs before cutover.
- Scaled the process: trained a team of 3 and wrote a runbook (how-to, error interpretation, recovery steps), coaching them to triage, reproduce, and resolve common failures without escalation.
Software Engineer
Infosys
Richardson, TX
June 2019 – June 2020
- Participated in Agile software development and contributed to a web application project through UI enhancements and feature development.
- Engaged in sprint planning, team standups, and retrospectives as part of the product team.
- Collaborated with the development team to implement a dynamic shopping cart feature for an internal web application, focusing on user interface enhancements and optimizing responsiveness within an Agile environment.
About Me
Security+ Application Support Engineer (pivot from data/ops). I focus on production reliability: reproduce issues, read logs/metrics, restore service quickly, and document runbooks so fixes are repeatable. In my labs, I practice the loop of triage → isolate with logs/metrics → safe rollback → verification. I like clear, plain-English communication and I’m building the habits I’ll use on an on-call team.
Stack: Nginx, Docker, Linux, Grafana/Prometheus, SQL, Python.
Off-hours: basketball/NBA, gym, anime & thrillers, occasional Valorant.
Certifications
CompTIA Security+
Earned July 2025
Education
Bachelor of Science in Management Information Systems
University of Texas at Arlington
Arlington, TX
GPA: 3.56
Organizations/Awards: Sports Coordinator for Filipino Student Association (FSA), Dean's List
Get In Touch
I'm always open to discussing new opportunities, potential growth, or just connecting with fellow professionals in the field. Feel free to reach out through any of the channels below!