Backend Engineer

Hi, I'm

Nguyen Ly Thanh

Backend Engineer

Backend engineer, 6+ years. I own the technical side — design doc to production.

Systems I've Built

20M+
records/day
Notification pipeline at Parcel Perform
10M+
emails/day
Re-architected Email Sync workflow
60s → 23s
PMT search latency
Cut shipment search latency
5,000+
concurrent clients
Solo-built real-time game server
SAP Store
shipped
JOB-AI LYSIS via SAP contract
Technical Lead
Campaign Engine, AI Visibility, Sales Agent
Production Mindset
90%+ coverage
Release gates
High throughput
Sustained load
Real-time
Low latency
AI-native
LLM tooling

Experience

  1. 07/2022 – Present
    HCMC
    Backend Developer
    Parcel Perform CO. LTD
    • Iris Squad — ran a 20M+ records/day notification pipeline (SMS, Email, Webhook); owned platform auth service.
    • Phoenix Squad — re-architected Email Sync to 10M+ emails/day; daily shipment digest; coverage > 90%.
    • Nexus Squad (AI) — Tech Lead on Campaign Engine, AI Ecommerce Visibility, Sales Agent (LangChain + AWS Bedrock).
  2. 03/2021 – 07/2022
    HCMC
    Backend Developer
    JobHopin CO. LTD
    • Led monolith → microservices migration for the recruitment platform.
    • Built JOB-AI LYSIS solo (Django, DRF, Celery, AWS, MySQL, Docker) — published on SAP Store via SAP contract.
    • BDD automation framework in Go/Godog covering 100+ scenarios.
  3. 02/2019 – 02/2021
    HCMC
    Full-Stack Developer
    Kyanon Digital CO. LTD
    • AI-powered facade inspection frontend (30+ defect types) with ReactJS + Sketchfab 3D.
    • AML real-time transaction screening (Django, Celery, AWS).
    • 4-service identity verification: Facecompare, OCR, Digital Signature, Auth.

Featured Project

TSOnline TNT

TSOnline TNT

Live
02/2018 – Present

Solo-built and still running real-time game server — full-stack, full ownership.

5,000+ concurrent clients via custom protocol codec.
PvP, NPC combat, map, marketplace, event engine.
Multi-LLM agent system with RAG (Groq, Gemini, Copilot) + MCP.
Coverage gates: 85% runtime, 90% core game server.
PythonDjango 5DRFCeleryRedisWebSocketsNext.js 14MUIMariaDBPostgreSQLpgvectorDocker ComposeGitHub ActionsPrometheusSentry

Key Achievements

High-Scale Systems

Designed pipelines processing 20M+ records and 10M+ emails per day with stable throughput.

AI Products

Tech Lead on Campaign Engine, AI Visibility, Sales Agent — LangChain/LangGraph on AWS Bedrock.

Performance Wins

Drove PMT shipment search latency from 60s down to 23s.

Full Ownership

TSOnline TNT — sole backend + ops, in production for 6+ years.

Blog

Notes on backend, AI agents, and shipping things that hold up in production.

View all posts
May 20, 2026

GPT-5.5 vs Claude Opus 4.7: The SWE-bench War That Defines AI Coding in 2026

GPT-5.5 just edged Claude Opus 4.7 on SWE-bench Verified — 88.7% to 87.6% — while Claude Mythos Preview quietly topped the harder SWE-bench Pro at 77.8%. And xAI's Grok Build entered the race at 70.8% with a model priced 25x cheaper. The real story is not who is winning this week. It is what this race reveals about what AI can and cannot do in a real codebase — and how to choose the right model for your team.

AI AgentsDeveloper ToolsGenAI
May 19, 2026

The Multi-Agent Era Is Here: What Anthropic's 2026 Coding Report Means for Every Developer

Anthropic's 2026 Agentic Coding Trends Report reveals a seismic shift: average Claude Code sessions now run 23 minutes (up from 4), touch 47 tool calls, and 78% involve multi-file edits. The verdict is clear — 2025 was the year of AI assistants, 2026 is the year of AI teams. Here's what every developer needs to know.

AI AgentsDeveloper ToolsGenAI
May 18, 2026

Claude 'Dreaming' Is Not a Gimmick: How Anthropic's New Agent Memory Fixes Production AI

At Code with Claude 2026 (May 6), Anthropic shipped three features for Claude Managed Agents: Dreaming, Outcomes, and Multiagent Orchestration. Together they tackle the hardest problems in production AI — agents that forget, context windows that overflow, and termination conditions that are never clearly defined. Harvey saw 6x task completion improvement. Wisedocs cut document review time by 50%. Here is what each feature does and why it matters to developers building real systems.

AI AgentsDeveloper ToolsGenAI

Let's build something impactful.

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