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誰にも届かない悲しみ
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LDNVN86/README.md
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Hi, I'm Seno 👋

Software Engineering student at HCMUS · Full-stack Developer

I build and operate software for real businesses, with a focus on dependable integrations, complex business processes, and systems that remain correct when things go wrong.

Portfolio GitHub Discord

A little about me

I'm a software engineering student and developer working on production systems for businesses. Two of my larger projects, TongKhoEsim and Tavigo, have been delivered and are serving customers daily. I'm now developing hub-aitelecom, a broader enterprise platform with interconnected business functions.

My priorities have changed as the projects have grown. Choosing a framework matters, but understanding how a business operates matters more: how orders move through a system, how partners exchange data, how payments are reconciled, and what should happen when a request fails halfway through.

I use AI extensively in engineering workflows, while keeping responsibility for business rules, system boundaries, data integrity, and operational safety firmly in the development process.


Products & current work

Production B2B eSIM

A wholesale eSIM platform connecting suppliers, distributors, and API partners. It brings together inventory management, reseller operations, partner APIs, and prepaid-wallet workflows.

Engineering focus: transaction integrity, idempotent operations, asynchronous processing, access control, and reliable provider integrations.

Rust Axum Next.js PostgreSQL Redis Apache Kafka Centrifugo

Production travel eSIM

A customer-facing eSIM platform covering product discovery, purchasing, provisioning, and order management. It integrates with external suppliers, payment providers, and supporting business services.

Engineering focus: provider orchestration, payment and webhook handling, background jobs, authentication, and operational visibility.

Go Gin Next.js PostgreSQL Redis Centrifugo

hub-aitelecom · In development

An enterprise platform bringing multiple business functions into a connected operating environment. The scope includes CRM, ERP, automation workflows (Nexo), and a longer-term direction toward mobile applications.

The architecture is evolving toward domain-oriented services and data-driven operations, with attention to service boundaries, consistent business processes, and controlled access to shared data. Because the platform is still under development, its internal design and implementation details remain private.


How I work with AI

I see AI as part of the engineering workflow—not a substitute for understanding the problem.

Area Current focus
AI-assisted development Research, implementation, code review, debugging, and integration work with human verification.
Agent workflows Sub-agents, MCP connectors, task decomposition, and automation across development tools.
Model selection Matching models to tasks based on capability, latency, cost, and the need for verification.
AI development Learning more about model training, adaptation, evaluation, and practical AI tooling.
Engineering ownership Validating business rules, transaction safety, security boundaries, and failure recovery before release.

I also build utilities for debugging and integration analysis, using browser DevTools, network traces, and HAR files to understand how web applications behave. Some of that work has grown into private tools and services.

My day-to-day workflow also includes tmux, HCOM, and HERDR for organizing development work.


Technology I work with

Languages & frameworks
Rust, Go, TypeScript, JavaScript, React, Next.js, NestJS and Express logos

Axum Gin

Data, messaging & infrastructure
PostgreSQL, Redis, Docker, Cloudflare, Linux, Ubuntu and Git logos

Apache Kafka Centrifugo Cloudflare R2 Lima tmux

External systems & integrations

I have worked across payment, telecommunications, and business-service integrations, including:

VNPay · KimNganPay · SePay · MISA · Skyfi · SimplifyTrip · eSIM Access

The integration itself is only one part of the job. The rest is making sure requests can be retried safely, failures can be investigated, and operational records remain consistent.


Other projects

These are smaller projects alongside my production work. I keep their descriptions short here; the public repositories contain the implementation details.

Project Description Technologies / source
napplus A prepaid-services platform for top-ups, data packages, cards, and bill payments, with an ongoing migration from NestJS to Rust. NestJS → Rust / Axum
Shop Acc Game An online game-account store with payments, administration, and real-time features. NestJS · Next.js · PostgreSQL · Redis · BFF
Muciii Bio A simple, customizable personal bio and links page. Personal web project
SenoDownload A video downloader built around format selection, media processing, and download APIs. Backend · Frontend · NestJS · yt-dlp · FFmpeg
NekozaneDex An unfinished manga-reading and publishing project that I used to explore full-stack development. Backend · Frontend · Go / Gin · Next.js · TypeScript

Private tools & services

Besides my public projects, I develop and offer a small selection of private tools for manga- and anime-related workflows. Some came out of reverse engineering and analyzing how existing websites and web services work. They are separate from my open-source repositories and aren't distributed publicly.

Interested in a demo or access? Feel free to contact me on Discord to discuss availability and terms of use.


Building useful systems, one business problem at a time.

Website · GitHub · Discord

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