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Sean · Seattle
Business Intelligence Engineer · Seattle
[ 01 — Signal acquired ]

YI‑SHENG (SEAN) Lin

>I turn raw data into
(02) — The Operator

I make complex datasets tell the truth — and turn that truth into decisions people can act on.

Based in Seattle. From telemetry pipelines at Chewy to quantifying $670K+ in value at AWS — I live where engineering meets analytics.

MS Business Analytics, Univ. of Washington. MBA, NTHU. Technical depth, business instinct.

01

Data Engineering

End-to-end ETL pipelines, telemetry systems, and real-time data workflows at scale.

02

Analytics & A/B Testing

Experimentation design, funnel analysis, and metric framework development.

03

Business Intelligence

Interactive dashboards, executive reporting, and self-serve analytics.

04

ML & AI Applications

Search ranking models, NLP pipelines, and LLM-powered product analytics.

27
Editorial CTR lift
(03) — Trajectory
01 / 05

BELLEVUE, WA · JUN 2025 — PRESENT

Chewy

Business Intelligence Engineer — Search & App Analytics

    (08) — Case Files

    [ 08 — Case files ]

    Beyond the bullet points.

    Two problems worked end to end — declassified to the NDA line. Problem, approach, tradeoffs, impact.

    FILE 01
    AWS — COMMERCE PLATFORM PRODUCT ANALYTICS
    Making product adoption measurable
    A commerce product was live; nobody could say whether customers actually adopted it.
    +17%
    QoQ adoption
    $670K+
    value quantified
     FILE 02
    CHEWY — SEARCH & APP ANALYTICS
    Evidence to launch a ranking model
    A new search ranking model was ready — launch hinged on a question raw logs could not answer.
    +27%
    editorial CTR
    1M+
    A/B records
    View all case files →
    (04) — Capability

    [ Signal strength by instrument ]

    Capability Field

    Languages by proficiency. Hover any channel to isolate its signal.

    ◦ sweep · live hover a vertex

    Data Analytics

    A/B Testing · Regression · Classification · Sampling · EDA · ETL Design · Funnel · Cohort · Metric Frameworks · Experiment Design

    Libraries

    Pandas NumPy scikit-learn Seaborn PyTorch PySpark
    (05) — Archive

    The Archive

    Two graduate degrees. Forty-four credentials. A record of always shipping the next thing learned.

    [ CERT.GALLERY — 55 CREDENTIALS · 9 ISSUERS ]

    Licenses & Certifications

    Pick a category — its records pour in. Scroll to glide through; click the front card for its detail page.

    ISSUER COLLECTION RECORD ISSUED— CREDENTIAL ID—
    VERIFY CREDENTIAL →
    ESC OR CLICK CARD — CLOSE
    SCROLL / ARROWS — CLICK TO OPEN
    (07) — Workbench

    [ 07 — Selected builds ]

    The Workbench

    Products, live. One array drives every layout — append a build and it appears. Two views below; toggle to compare.

    Products, live. The full board — layouts, live demo loops — lives on the Workbench.

    [ Deployments / live ]

    Latch

    Live

    Local-first macOS password vault

    Swift SwiftUI Keychain

    Career OS

    Beta

    Résumé, tuned to the job

    Swift Claude API LaTeX
    Enter the workbench →
    (06) — Channel

    [ Transmission open ]

    Let's work together.

    sean@seattle — contact

    sean@seattle ~ % whoami

    → Business Intelligence Engineer · open to new signals.

    sean@seattle ~ % contact --all

    sean@seattle ~ %

    Start a conversation