I build products people
trust and keep using.

In Singapore, parents spend S$1.4B on tuition, yet nightly primary math homework creates dining table friction. Stressed parents trying to help resort to secondary algebra ($x$ and $y$), triggering children's tears ("Teacher say cannot use this method!"). Generic LLMs hallucinate calculations and default to algebraic equations banned in Primary 4–6.

Built a multimodal AI bot (Gemini Vision, Firebase Gen 2) converting student homework photos into syllabus-verified bar models and parent coaching scripts in <30s. Designed a Dual-Solver consensus pipeline: pitting an analytical solver against a pedagogical solver verified by programmatic arithmetic and syllabus-level linters.

Two solvers agreeing isn't enough when both share the same upstream reading. On one Primary 4 question, both misread a value on a graph, and every arithmetic check still passed. Reading the image needs its own independent check, separate from checking the maths.

Ship a full-featured simulation game to both Apple and Google App Stores as a solo builder without a dedicated engineering or art team.

Built it end to end leveraging agentic AI workflows (Claude Code, Antigravity), published an open public roadmap and devlog at kopikia.lol, and coordinated a 100-user playtest cohort.

Live on the App Store and Google Play, with balance and progression tuned on feedback from the 100-user playtest.

A solo developer cannot manually test every possible state combination, rapid multi-tap exploit, or edge-case order flow that real players discover.

Constructed an adversarial testing agent that runs headless browser sessions seeking game breaks, decoupled from an independent invariant evaluator so evaluations remain objective.

Found 3 game-breaking exploits, now fixed; consolidated testing into an automated 8-second offline regression suite.

Caregivers need to share an infant's daily log in real time without handing over sensitive personal data or creating tedious email accounts.

Architected zero-knowledge access code rooms so no stored data can identify the child or caregivers. Learned key lessons on builder bias: anchoring navigation to user tasks rather than features built.

Shipped concept to TestFlight in under a week; reinforced deep empathy for discovery and information architecture.

Bad actors created duplicate accounts to extract fraudulent reward claims, while limited developer bandwidth had to simultaneously balance new feature delivery.

Partnered with data analysts to identify behavioral abuse patterns, establishing hybrid rules-based and model-based detection. Anchored roadmap on D1/D7/D30 retention and LTV cohort funnels.

Prevented $50K in fraudulent reward extraction and removed 500+ suspicious accounts while growing game to 450K users and $1M in IAP revenue.

Taking a complex mobile RPG through launch with cross-functional teams spread across three offices, differing studios, and time zones.

Aligned product delivery with launch GTM strategy, synthesized user behavior telemetry into a unified prioritized backlog, owned user segmentation, and led a 4-person pod (producer, 2 designers, junior PM).

Delivered 1M pre-registrations and $4.6M in launch revenue, with premium conversion funnels supporting $800K in peak daily transaction volume.

A two-sided platform dilemma: 6 external game studios needed seamless SDK integration, while cross-title player retention across six live titles required systematic improvement.

Defined the SDK and API integration roadmap, managed partner studios through developer integration, and directed 2 internal engineers. Redesigned engagement loops using cohort analysis and A/B testing.

Shortened studio integration time by two months and achieved an 18% uplift in 30-day retention across all six titles.

Competing feature priorities across 7 international co-dev studios and a 200+ person team ahead of a multi-million-dollar AAA launch.

Reconciled studio priorities into a single delivery roadmap, sequenced milestones, and tracked critical cross-studio dependencies to surface trade-offs to senior leadership.

Delivered aligned milestone execution across 7 worldwide studios with transparent decision trade-offs ahead of global release.