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John OngJO
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John Ong

@johnong

I build tested, cost-efficient LLM systems and NLP products that solve real customer problems.

Malaysia
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At PropertyLab Technology, I shipped three production LLM systems across a Laravel monolith, an agentic WhatsApp sales product, and a full platform rebuild. I took a WhatsApp AI sales agent from specification to live customer traffic, raising coverage from 8% to 96% across 473 messages.

I build AI systems with measurement, safety, and reliability in mind: I replaced an underperforming two-pass LLM design after evaluation, secured customer identity documents with record-level access controls, and cut webinar AI costs from a potential $144 to $0.08 per session. I’m also fine-tuning XLM-RoBERTa for Malaysian parliamentary stance classification across 16,000+ speech turns.

Experience

Work history, roles, and key accomplishments

PB

AI Engineer Intern

PropertyLab Technology Sdn. Bhd.

Mar 2026 - Sep 2026 (6 months)

Sole AI engineer across three repositories, shipping 1,058 commits and 287 test classes. Built a WhatsApp AI sales agent, migrated financial datasets, and closed a security hole exposing customer identity documents.

Education

Degrees, certifications, and relevant coursework

Universiti Malaya logoUM

Universiti Malaya

Bachelor of Computer Science, Computer Science (Data Science)

2023 -

Grade: 3.90/4.00

Pursuing a Bachelor of Computer Science (Data Science) with a current CGPA of 3.90/4.00.

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