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Achievements

Achievement: Pull SharkAchievement: Pair Extraordinaire

Achievements

Achievement: Pull SharkAchievement: Pair Extraordinaire

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HyunsikParker/README.md

Hyunsik Parker

Software · Data · Systems

Selected work · Writing

I build small, reliable products that make complex decisions easier to inspect. My work spans product engineering, data tools, and carefully scoped systems, with an emphasis on clear limits and reproducible results.

Selected work

SeriesSafe

Recurring-calendar changes with preservation checks, side-by-side loss comparison, and undo.

Live demo →

Half-Life

A spaced-repetition model fitted to 12.9 million real reviews, with held-out evaluation and a browser demo.

Live demo →

One Hundred People Like You

A visual explanation of what a positive screening result means at different pre-test risks.

Live demo → · Educational, not medical advice.

Solana Ecosystem Pulse

A source-backed, automatically refreshed report and accessible dashboard with explicit coverage gaps.

Live dashboard →

MirrorMargin

A virtual try-on repeatability check that keeps image confidence separate from real-world fit.

Live demo →

FrameGuard

A read-only incident workspace for tracing render-pipeline failures and proposing a reviewable recovery.

Live demo →

Working principles

Useful before impressive. Limits beside results. Reproducible checks. Reviewable actions.

Toolbox

Python · TypeScript · JavaScript · React · FastAPI · SQL · DataHub · AWS · Cloud Run · Playwright

Writing

I publish source-grounded guides and analysis at SikiT.

Contact

246881935+HyunsikParker@users.noreply.github.com

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  1. seriessafe seriessafe Public

    Move a recurring event to a different day without losing the cancellations, make-ups and room changes you already set. A WebMCP-native web app for the OpenAI WebMCP Challenge.

    TypeScript

  2. half-life half-life Public

    Fit spaced-repetition decay to 12.9M real reviews. Predicts recall 46% better than a fixed Leitner schedule.

    Python

  3. one-hundred-people-like-you one-hundred-people-like-you Public

    A positive screening result read against your own pre-test risk, drawn as one hundred people. BRFSS-fitted risk model, calibration reported first.

    Python

  4. solana-ecosystem-pulse solana-ecosystem-pulse Public

    Auto-updating, source-backed Solana ecosystem report and interactive dashboard

    HTML

  5. mirrormargin-youcam mirrormargin-youcam Public

    A returns-prevention layer that separates virtual try-on confidence from real-world fit.

    TypeScript

  6. frameguard frameguard Public

    Read-only render-pipeline incident investigator: a Google ADK agent that correlates Grafana metrics and logs through the Grafana MCP server and proposes a recovery a human must approve.

    Python