Summary
Overview
Work History
Education
Skills
Publication
Timeline
Generic

Ki Hyun Won

Princeton

Summary

Seasoned Senior Software Engineer with a proven track record at Apple, where I spearheaded the development of a high-performance, search infrastructure, enhancing Spotlight search efficiency. I excel in building scalable systems and leading teams to achieve breakthrough improvements.

Overview

6
6
years of professional experience

Work History

Senior Software Engineer

Apple
11.2018 - Current

Spotlight Team

  • Led development of on-device, disk-backed cache infrastructure to improve entity search performance
  • Contributor to "Image Playground" feature introduced on 2024 WWDC

Search Infrastructure Team

  • Designed and implemented batch key-value data pipeline built on in-house framework
  • Led development of pipeline controller which orchestrates Kubernetes job creation and monitoring
  • Achieved 2x throughput improvement for ML data pipeline built on Kubernetes cluster

Software Engineer

HeartFlow
07.2018 - 10.2018

Core Infrastructure Team

  • Built API feature that extends existing AWS medical image import gateway
  • Migrated old data schema to new schema in MySQL
  • Restructured and optimized internal API written in Django to increase throughput by 30%

Education

Bachelor of Arts - Computer Science

University of California, Berkeley
Berkeley, CA
08.2012 - 2018.05

Skills

    Languages: Go, Python, Java, C

    Message brokers: Kafka, Redis, Kinesis

    MapReduce: Hadoop, Spark

    Databases: PostgreSQL, MySQL, Cassandra, HBase

    Infrastructure: Kubernetes, Argo Workflow, Docker

    ML: Tensorflow, Keras

Publication

Self-supervised Anomaly Detection for Narrowband SETI

Jan 15, 2019 IEEE GlobalSIP 2018

preprint arXiv:1901.04636 [astro-ph.IM]

Timeline

Senior Software Engineer

Apple
11.2018 - Current

Software Engineer

HeartFlow
07.2018 - 10.2018

Bachelor of Arts - Computer Science

University of California, Berkeley
08.2012 - 2018.05
Ki Hyun Won