.NET DEVELOPER — HO CHI MINH CITY
tnuen — short for "Tuấn Nguyễn", pronounced /tnuen/
▸ builds backend systems in .NET & AWS
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I have over 5 years of experience building backend systems on .NET and cloud infrastructure — from real-time features and payment systems to rescuing undocumented codebases and getting them running again.
I work well under pressure and independently, and I'm always looking for ways to sharpen my skills and take on new engineering challenges. Based in Ho Chi Minh City, Vietnam.
Took ownership of source code and infrastructure for third-party projects, recovering undocumented and non-working systems back to a stable, working state.
Mobile reward app where users complete quizzes and surveys to earn "carrot" and redeem it for rewards. Built the backend APIs, Stripe subscription & purchase flow, media processing, and self-managed the full deployment pipeline.
A social platform for verified students to anonymously share reviews. Designed the database and backend APIs, real-time chat over AWS WebSocket/Ably, full-text search with OpenSearch, and Redis-based response caching.
Backend and API design for a customer-relationship platform on AWS. Handled SMS/email services, migrated legacy logic from Node.js to .NET, and supported QA with Selenium test automation.
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