About Me
Passionate about technology and building meaningful products
Hello! I'm HungHD, also known as Louis Hoang
I'm a software engineer and blogger, sharing my knowledge and experiences in software development. I have more than 6 years of experience working across various domains such as SaaS, EdTech, E-Commerce, and most recently, Fintech.
My journey in technology started with a curiosity about how things work, which led me to explore different programming languages and frameworks.
Currently, I focus on continuously learning and adapting to new technologies while building products that solve real-world problems and create meaningful value for users.
Technical Skills
Frontend
Backend
AI & Tools
Work History
Companies and roles that shaped how I build software.
Early Start (Monkey Apps)
Backend Developer- Owned backend for 4 apps (Monkey Stories, Junior, Math, Vmonkey) β features, tracking, bug fixes.
- Built Monkey Tutoring from scratch: system architecture, full backend, and all environments.
- Migrated CMS story builder from PHP/Laravel to Golang/Gin; restructured CI/CD pipeline with DevOps.
Pinggo (formerly an Adflex project)
Full-stack Developer- Refactored desktop web with Tailwind CSS; built landing pages.
- Developed RESTful APIs for mobile & desktop, event tracking, and automated penalty/refund flows.
- Built seller commission reconciliation and payment management system.
VCCorp β Bizfly Ticket
Developer- Developed task renewal/expiry alerts, permission views, @mentions, and cross-ticket references.
- Worked in Agile Scrum; integrated with Bizfly services.
FITHOU Free and Open Source Club β Hanoi Open University
Intern Β· Developer- Built and maintained university news website modules.
- Developed certificate & degree lookup system.
Vision & Goals
What I'm building toward
A clear north star guides every product decision β here's mine.
Scalable Applications
Architecture that grows with users β from 10 to 10 million without rewrites.
- βMicroservices & containerization
- βCloud-native infrastructure
- βPerformance-first development
Fintech & Payment Infrastructure
Building reliable, secure financial tools β from payment flows to personal finance products.
- βPayment API design & integration
- βFraud detection & risk systems
- βOpen banking & wallet infrastructure
Developer Education
Turning years of hands-on experience into content, tools, and communities that help other developers grow.
- βTechnical writing & open-source
- βBackend architecture deep-dives
- βMentoring junior Vietnamese devs
Tech Lead β CTO β Co-founder
Growing from technical leadership to founding and leading world-class engineering teams for global products.
- βTech lead & engineering mentorship
- βSystem architecture & tech strategy
- βFrom 0β1 product execution
Global & Enterprise Engineering
Moving toward international teams and large-scale organizations β where engineering standards, system complexity, and collaboration are at a world-class level.
- βEnterprise-grade system design
- βCross-cultural, distributed team collaboration
- βContributing to global-impact products
Products
Things I've built
A collection of products I've designed, developed, and shipped β solo and with others.
Writing
Technical articles published on Viblo
PhΓ‘t triα»n Blockchain vα»i PHP
Build a basic blockchain system in PHP β blocks, chain validation, proof-of-work, and mining from scratch.
Firebase Cloud Messaging vα»i Laravel Schedule
Implement scheduled push notifications using Firebase Cloud Messaging and Laravel's built-in scheduler.
Download all images trΓͺn website sα» dα»₯ng JavaScript
Bulk-download all images from any webpage using the Fetch API, Blob objects, and temporary anchor elements.
Sα» dα»₯ng Google Drive API trong Laravel
Integrate Google Drive API with Laravel β authentication, listing files, downloading, and exporting documents.
Contact
Let's work together
Have a project in mind, a question about my work, or want to collaborate? I'd love to hear from you.