AI Engineer · LLM / RAG / Agent Systems
Nguyen Son Tung
nstung463@gmail.com · 0335 955 790 · Ho Chi Minh City, Vietnam
// Profile
AI Engineer at FPT Software with 3+ years building production LLM, RAG, and multi-agent systems for enterprise clients. Specializes in agent harness engineering: tools, sandbox, permissions, memory, skills, and connector layers that make agent sessions dependable.
// Experience
AI Engineer · ITOCHU GPT
Jul 2025 — Present
Multi-Agent AI Platform · Client: ITOCHU Corporation · Team of ~20
- • Own the File Agent subsystem — PPTX/DOCX/XLSX generation inside isolated sandboxes.
- • Delivered video-analytics Q&A and streaming text-to-speech capabilities integrated into the platform.
- • Collaborated across backend, frontend, AI, and infrastructure teams to bring agent capabilities from architecture through production deployment.
AI Engineer · Infinity
May 2026 — Present
Agent Harness & Sandbox Platform · Independent codebase · Technical Lead
- • Built the agent harness end-to-end: runtime, tool execution, permissions, and sandbox orchestration.
- • Integrated OpenSandbox to isolate LLM-generated code and file-processing workloads.
- • Designed a human-in-the-loop tool-approval system with pause, persist, and resume.
AI Engineer · AI Buddy
Feb 2025 — Apr 2025
Client: KPMG · Team of 5
- • Built an automated crawling pipeline extracting financial data from structured & unstructured sources.
- • Developed the knowledge base backing real-time RAG querying for the chatbot.
AI Engineer · Ivy Chatbot
Dec 2024 — Mar 2025
FPT Software IvyChat product line
- • Optimized document chunking to improve retrieval accuracy across multiple source types.
- • Implemented LangGraph to structure multi-turn conversation flow and maintain context.
// Core skills
Agent & LLM
RAG · LangChain · LangGraph · MCP · OpenAI API · Azure OpenAI · Anthropic Claude · Hugging Face · Prompt Engineering
Agent Harness
OpenSandbox · HITL Permissions · Agent Memory · Skills Systems
Backend & Data
FastAPI · SQLAlchemy · Celery · Pandas · PostgreSQL · MySQL · SQLite · Redis · Azure Cognitive Search · Blob Storage
Computer Vision
YOLO · PyTorch · CNN · Transformers · CM-GAN · DeepFillv2 · ArcFace · Triplet Loss
Cloud & DevOps
Azure · Docker · Kubernetes · Azure DevOps · Git/GitHub · Pytest · Langfuse
AI Coding Tools
Claude Code · Codex · Cursor
// Education
Master of Software Engineering (MSE), Artificial Intelligence
FPT University
2026 — Present
B.Sc. in Artificial Intelligence
FPT University
2021 — 2025