Senior Solutions Architect | Hands-on Engineering Leader
I don't just draw diagrams; I build systems that work.
With 15+ years of experience, I specialize in owning complex systems from the first line of code to production. I believe the best architects are the ones who still get their hands dirty with code. My expertise covers Native macOS/iOS, Mobile Cross-platform, full-stack web ecosystem, Cloud Infrastructure, and recently, AI-assisted development workflows. My focus is always on resilience, performance, and team velocity.
Core Expertise
- Desktop/Mobile (Expert): Native Swift (macOS/iOS Expert - 9 years), SwiftUI, Flutter, React Native (Native Bridge development).
- Web/Fullstack: Next.js, React, Vue.js, Node.js (TypeScript), Python.
- Data & AI: Sqlite/Realm/PostgreSQL (Expert), MongoDB/Mongoose, Redis. Early adopter of AI-driven workflows (LLM agents for testing & refactoring).
- Infrastructure: AWS Professional (S3, EC2), GCP, Firebase, CI/CD Automation.
Where I Share & Connect
- GitHub: github.com/hgq287 - Open-source tools & Architectural boilerplates.
- Stack Overflow: stackoverflow.com/users/12345813/hgq287 - Active participation in the developer community.
- Medium: medium.com/@hgq287 - Sharing deep-dives on System Design & Engineering Leadership.
Work Experience
Hands-on Architect | Mobile, Machine Learning & Backend
May 2025 – Present (Part-time / After-hours)
- Roadmap: Led a team of 3 to build and launch a mobile app and its backend system.
- Infrastructure: Designed and deployed a lean, GCP-based mobile backend from scratch, maintaining 99% uptime.
- Efficiency: Reduced development rework by ~ 25% through proactive design reviews and spotting architectural bottlenecks early.
- AI Integration: Introduced AI-assisted code reviews, reducing manual rework by 25% and helping the team ship features faster.
Systems Architecture | Mobile Ecosystems | Varin Team
Jan 2024 – Apr 2025 (Part-time / Execution Focus)
- Strategy: Owned the technical direction for multi-platform shopping systems, balancing native performance with cross-platform delivery speed.
- Custom Solutions: Developed custom Native Bridges in Swift and Kotlin to bypass framework limitations and access platform-specific hardware capabilities.
Senior Engineering | macOS Productivity Suite
2015 – Present (Full-time)
- Long-term Ownership: Owned the core architecture of professional macOS apps for over a decade.
- Legacy Modernization: Led the strategic migration from Objective-C to Swift/SwiftUI.
- Results: 35% reduction in crash rates and slashed the time-to-market for new features by half.
- Scale: Integrated AWS Chime for high-concurrency real-time communication within the native desktop app.
Independent Work | System Design & Open Source
- SnifLeaf (Owner): Designed and built a native macOS network inspector using SwiftUI and NetworkExtension to solve the bloat of traditional debugging tools.
- Trading Systems: Developed automated execution engines, owning the full pipeline from market data ingestion to real-time risk management.
Early Career & Foundation
- Business Venture | F&B Entrepreneur (2013 - 2014): Learned the "Real-world Ownership". Managed P&L, staff of 10+, and crisis handling. This experience taught me to build software that actually solves human/business problems.
- PHP Developer | Mecsu JSC: Managed company websites and internal tools using PHP and Wordpress.
- Embedded Software Engineer | Datalogic: Developed firmware for barcode scanners and optimized retail hardware systems.
- Internship | Renesas Design Vietnam: Research and development during thesis, focused on hardware/software co-design.
Academic Foundation
- B.E. in Computer Engineering | Ho Chi Minh City University of Technology (BK HCM).
- Philosophy: Focus on Fundamentals (OS, Compilers, Data Structures) over Hype.
Leadership Philosophy
- Lead by Doing: I write the core code and review the rest. I never assign a task I can't do myself.
- Pragmatic AI: Use AI to eliminate "busy work" (documentation, boilerplate, unit tests), so the team can focus on architecture.
- Extreme Accountability: I take full responsibility for the systems I build, from the first line of code to 3 AM production stability.
The Discipline
I apply the same discipline to my work as I do to my life. Daily running and meditation aren't just hobbies - they are how I maintain the focus and mental endurance needed to lead teams through stressful technical decisions.
Note: I believe strong technical leadership is earned through real work. I stay hands-on in critical parts of the code to ensure our architecture remains practical and efficient.
Contact
- Email: hgq287@gmail.com
- Phone: +84 989 935 331
- Availability: Global Remote (US / EU)