Experience
Project: Synaptix
A real-time AIOps platform for infrastructure monitoring — a 5-layer pipeline (ingestion, anomaly prediction, correlation, root cause analysis, topology) feeding an operations portal for incidents, signals, logs, and AI-assisted investigation.
- ›SRE Investigator Agent: Built the LLM-driven RCA investigation agent end-to-end: offline harness (audit, redaction, grants, planner, citation check), tool contracts, a BFF-owned multi-round investigation loop under a call budget, and the portal trigger/runs/trace UI
- ›Root Cause Analysis: Added attribution-confirm questions and requalification so RCA hypotheses can be confirmed or ruled out against live telemetry
- ›Backend & Data: Stamped canonical entity identity across all signal sources (thresholds, log patterns, AI anomalies), split metric aggregation into its own producer job, and folded cascade incidents server-side as a single source of truth
- ›Portal: Delivered Signals/Logs Explorer (KQL), runbook panel, topology deep links, Vietnamese i18n, Teams/Slack notifications, and an in-dashboard AI chat agent
- ›Fixed an SSO open-redirect vulnerability by allowlisting post-login redirect origins
Project: Buddy Talk
An English learning mobile app empowering users to practice English through AI-driven features: free conversation with Buddy AI, pronunciation evaluation, and vocabulary bookmarking.
- ›Researched and implemented AI-powered free-talk conversation and pronunciation evaluation as primary backend developer
- ›Integrated third-party speech and pronunciation assessment services
- ›Set up CI/CD pipelines; configured app distribution via TestFlight (iOS) and Firebase App Distribution (Android)
- ›Conducted end-to-end testing and provided structured improvement feedback
Project: PIMQ
A microlearning platform built on a microservice architecture, leveraging AI for personalized content generation and intelligent recommendations.
- ›Designed and implemented a FastAPI-based AI microservice exposing REST APIs for the web app to generate microlearning content, images, quizzes, and tutoring responses
- ›Configured CI/CD to deploy service to k3s
- ›Integrated with existing services to retrieve source data and create the required learning data for AI generation workflows
Project: Mock Interview
A platform for simulating interview sessions with realistic video conferencing and AI-powered feedback.
- ›Set up backend service and CI/CD for web and backend
- ›Researched and implemented WebRTC (Janus) for real-time interview rooms
- ›Integrated Google and Azure speech services for TTS and STT
Project: Dapp
A decentralized application with ERC20 token functionality including transfer, swap, and earn features.
- ›Wrote smart contract for a token inheriting ERC20 (transfer, swap, earn)
- ›Deployed smart contract to testnet and mainnet
- ›Developed DApp interface to interact with smart contract
- ›Set up TheGraph to index contract events for transaction history
Project: Koffi
4 products built on a microservice architecture: Koffi Outbound/Inbound (invoice management), Koffi PIT (personal income tax), Koffi Sign (electronic contract signing) — unified under a single account with SSO across the entire Koffi ecosystem.
- ›Backend: Invoice management, tax declarations, digital signatures, electronic signing of XML/PDF files, invoice validation; services communicate via REST API and ActiveMQ
- ›SSO & Ecosystem Integration: Implemented and maintained single-account authentication allowing users to access all Koffi products seamlessly within the ecosystem
- ›Business Analysis: Analyzed regulations and proposed required project changes
- ›Unit testing, mentoring and onboarding new team members
Project: OMI CALL
A platform for renting phone numbers for automated/manual calls, with task and customer management across Facebook and Zalo channels.
- ›Implemented phone number rental and task management features
- ›Unit testing and technical research support
Project: OMI TRAINING
A data collection platform for AI training — collaborators transcribe audio, tag gender/region from call recordings.
- ›Implemented audio file management, task management, and collaborator performance statistics
- ›Unit testing and technical research support