GenAI / AI Engineer | Melbourne, VIC

Building production GenAI systems for reasoning, retrieval, and decision support.

Hi, I'm Sylvester. I work across applied AI, software engineering, and manufacturing data science, with a focus on turning messy technical signals into reliable tools that engineers and business teams can understand, trust, and use.

  • Master of Engineering, EEE Graduated May 2026; researched GenAI/LLM reasoning generation and feature generation for recommendation pipelines
  • Industrial Postgraduate Scholar Singapore Economic Development Board Industrial Postgraduate Programme scholarship for industry-linked LLM research
  • Production GenAI Systems Agentic orchestration, retrieval, tool use, and gate-checked evaluation loops for manufacturing diagnostics
Portrait of Sylvester Chun

Current Focus

Senior Data Scientist / AI Engineer at Micron Technology

Building GenAI systems, ML services, and decision-support software for engineering teams.

Research Focus

Master's in EEE, Nanyang Technological University

Singapore Economic Development Board Scholarship

Completed research on LLM-mediated reasoning generation and feature generation for recommendation pipelines.

Community

AISG Train-the-Trainer volunteer

Volunteering to teach practical AI literacy to the community at Bendemeer RN.

Experience

Recent roles & impact

I partner with cross-functional teams to build AI products, production software, and ML-enabled workflows that move from prototype to daily use.

June 2021 - Present

Micron Technology - Senior Data Scientist

Building agentic AI products, ML services, and decision-support platforms for advanced memory manufacturing.

  • AI Platform / Agentic Systems Lead - Internal AI Product

    Led the design and delivery of a production-grade agentic AI system used by engineers across multiple global sites to diagnose complex operational issues.

    Built an LLM-driven assistant combining retrieval, tool orchestration, and reasoning workflows to support decision-making in high-ambiguity scenarios.

    Owned the system end-to-end: problem definition, architecture design, gate-checked evaluation loops, deployment, and adoption.

    Designed production checks for retrieval quality, tool-call behaviour, groundedness, and domain review before release.

    Resulted in ~509 engineering hours saved per week and ~50% reduction in time-to-diagnosis, with sustained usage across sites.

  • Agentic AI Platform Leadership

    Led the development of Micron's first production agentic AI system, establishing architecture patterns, use-case scoping, and best practices for enterprise-wide agentic AI adoption.

    Designed and implemented an LLM-driven agent framework combining retrieval, reasoning, and tool orchestration to support complex diagnostic workflows.

    Acted as technical lead and primary author, shaping standards later reused across multiple AI initiatives.

    Recognised with the 2025 Micron Data Science Technical Seminar Innovation Award.

  • CVD Tool Qualification Reduction - Data Science with Business Impact

    Led an applied ML and analytics initiative to optimise equipment qualification workflows, reducing end-to-end cycle time by ~70%.

    Built feature engineering and modelling pipelines to identify critical qualification signals, enabling earlier decision-making and faster tool readiness.

    Reduced qualification cycles from an average of 7 runs to 2, delivering ~US$400K annual savings through increased equipment availability.

  • Global Diagnostic ML Pipeline - Internal AI Platform Adoption

    Designed and scaled reusable diagnostic modelling pipelines adopted by global data science teams for rapid issue diagnostics.

    Abstracted common analysis patterns into a self-service framework, reducing time-to-insight for exploratory investigations and improving consistency across teams.

    Served as technical owner and primary author, driving internal adoption and knowledge sharing across sites worldwide.

  • FOUP Gasket Warping Detection - Computer Vision in Production

    Led the delivery of a production computer vision system to detect mechanical defects impacting downstream quality.

    Designed, trained, and deployed a vision-based detection pipeline integrated into operational workflows, enabling early intervention and yield protection.

    Achieved a baseline ~0.4% yield loss avoidance, with the system running in live production environments.

Jan 2024 - May 2026

NTU, School of EEE - Master's Graduate

Completed a master's degree while building applied LLM and recommendation-system prototypes.

  • Completed research on LLM-mediated recommendation explainability and feature generation.
  • Presented work on reasoning for course recommendation before dedicated reasoning models became common in the public AI stack.
  • Translated product imagery into richer textual signals to improve recommender model quality for e-commerce discovery.
Part-Time - Jan 2021 - Apr 2024

Invigilo Technologies - Data Scientist (IoT & Computer Vision)

Invigilo develops proprietary computer vision products to improve worker safety in industrial environments.

  • Led the design and deployment of edge-based computer vision systems on portable, solar-powered, 4G-connected cameras across manufacturing and construction sites, delivering real-time safety analytics in resource-constrained environments.
  • Coordinated hardware manufacturing and field deployment, bridging model development, embedded constraints, and on-site operations as part of an IMDA SG$50K grant-funded initiative.
  • Integrated external enterprise systems (e.g. SAP, Procore) into the core platform, improving interoperability and enterprise adoption.
  • Owned the end-to-end CV lifecycle, including data labelling, model training, on-prem deployment, and integration with existing site cameras and local servers.
Full-Time - Aug 2019 - Jan 2021

Imprint Energy - Data Science & Applications Engineering

Imprint Energy develops flexible rechargeable batteries for next-generation IoT and wearable devices.

  • Built data analysis and internal tooling to support manufacturing and reliability decisions, improving confidence in battery failure-rate predictions and operational reporting.
  • Led cross-functional applications engineering projects, developing an internal web manufacturing portal (React/Django) and delivering two end-to-end hardware-software prototypes integrating flexible batteries with IoT devices for field data collection via LoRa.

Skillsets

Capabilities

A blend of GenAI engineering, ML fundamentals, software delivery, and stakeholder communication for taking AI systems from prototype to production use.

Generative AI & Agents

  • LLM agents
  • Agentic orchestration
  • Skill-based development
  • RAG
  • Prompt / system design
  • Eval loops
  • Guardrails
  • Semantic search
  • Tool use

AI / ML & Data

  • Python
  • PyTorch
  • TensorFlow
  • scikit-learn
  • Pandas
  • Computer vision
  • Recommendation systems
  • Feature engineering

Engineering & Platforms

  • React
  • Django
  • FastAPI
  • Java
  • Scala
  • C / C++
  • APIs
  • Data pipelines
  • AWS
  • Milvus

Product & Delivery

  • Stakeholder facilitation
  • Technical storytelling
  • Adoption
  • Documentation
  • Cross-functional delivery

Projects

Selected work

A snapshot of initiatives that pair engineering depth with practical outcomes across AI, full-stack software, IoT, and automation.

Micron team presentation setting
Agentic AI Manufacturing Root Cause Analysis

Agentic orchestration for manufacturing diagnostics

Explored agentic orchestration, reasoning flows, and more recent skill-based agents for yield-related diagnostics and first-pass manufacturing issue analysis.

Presentation slide about recommendation systems
LLM Semantic Search Ecommerce

LLM Feature Enhancement Pipeline

Explored how LLMs, semantic search, recommendation systems, and customer-facing assistants can improve product discovery, merchandising workflows, and ecommerce automation.

Healthcare AI web application interface
Healthcare AI VLM / LLM Milvus

AI Smart Dietician

Developed an AI dietician system for National Healthcare Group Polyclinics, combining image recognition, nutritional modelling, conversational AI, vector search, Google Maps API, and safety guardrails.

Laundry room IoT dashboard
IoT Firebase

Laundry Room IoT

Instrumented residential washing machines with sensors and a Raspberry Pi hub so residents can book slots, track availability, and get notifications when laundry is ready.

Self watering plant
IoT Automation

Self Watering Plant

Built a soil-moisture feedback loop with sensors and microcontrollers to keep plants thriving without daily maintenance.

Student study planner interface
Product React

Student Study Planner

Co-designed a planning tool for undergraduates to map four-year journeys, balance workloads, and schedule overseas exchanges with clarity.

Manufacturing web app dashboard
Fullstack Operations

BATS Manufacturing Web App

Extended a manufacturing analytics platform at Imprint Energy, enabling production teams to apply pipeline tweaks and improve data collection fidelity.

Telegram bot notification
Automation Python

KTM Train Ticket Notifier

Built a Telegram bot (@SGJBTrainTicketChecker) that monitors cross-border ticket availability and nudges commuters when new seats open up.

NFC wristband
Security Hardware

NFC Card Cloning

Experimented with Mifare Classic 1k cards to create a secure NFC wristband alternative for daily access, demonstrating convenient authentication.

Notes

Recent notes, written as I would explain it

A small set of personal technical notes on the work that shaped my last two years: research, healthcare AI, manufacturing agents, and community AI teaching.

30 May 2026

Teaching AI basics at Bendemeer RN

Volunteering as an instructor for a community AI workshop on AI basics, prompt engineering, effective use, and responsible habits.

Contact

Let's explore what's next.

Whether you're modernising manufacturing, scaling AI initiatives, or nurturing a curious side project, I'd love to collaborate.

  • Email chunhongwei.chw [at] gmail dot com
  • Location Melbourne, VIC
  • Currently learning Production AI evaluation - Applied reasoning workflows