Heesoo Kim Email & Phone Number

San Francisco, CA, US

Sunnyvale, CA, US

Santa Monica, California, US

• Worked on a multi-team project for A/B timeliness to reduce daily experimentation results time from three days to one day which helped to improve engineering productivity

San Francisco, CA, US

• Led the secure Hadoop project such as building the secure Hadoop cluster

Palo Alto, California, US

• Implemented automatic Hadoop upgrade system from Hadoop 2.2 to Hadoop 2.4. Reduced migration time for OPS team from a day to an hour; system became the basis for the weekly Hadoop cluster automated release process.
• As primary Hadoop security engineer, designed and implemented Kerberos-based security solution for cloud-based all apache Hadoop infrastructure (hadoop, hdfs, hive, oozie, spark, etc)
• Designed and built the Kerberos KDC(Key distribution center) RESTful server for multiple Hadoop clusters.

Seoul, KR

• Communication & Software R&D Department
• Led a team of 3 people, responsible for the comprehensive design and implementation of IPSec security functionality in VOIP and IMS (IP Multimedia Subsystem) products
• Managed outsourced hardware development via subsidiary company to make circuit board for SBC (Session Board Controller)

• Mobile Internet Department
• Managed all aspects of project development within the Multimedia Messaging System(MMS)
• Led a team of twelve to design and develop new functionalities for SK Telecom’s (SKT) Korean MMS system (19 million subscribers, 2.5M messages per day).
• Refactored SK Telecom MMS service; reducing system failure by 80% and operational cost by 30%
• Led the team to design, build, and test the interoperable system between OMA MMS and Korea MMS specifications. The system, launched by SKT in 2008 and licensed by KT in 2009, went on to serve 85% of market share.

• R&D Department
• Designed and launched prototype embedded IPSec VPN system with MIPS processors
• Managed a distributed, multi-national team of 6; which consisted of client and server developers

성남시, 경기도, KR

• Senior Solution Engineer, Qrio Inc., (USA branch office)
• Led growing development teams to design and implement Mass Communications System (MCS) based on prior experience heading American and Korean UMS (Unified Messaging System) developmentConsultant/Technical Support.
• Led implementation of 3-tier distributed system for human resource management system within Hyundai Heavy Industries Co., Ltd., serving 25,000 employees
• Ensured system reliability (failure, transaction processing, etc.) and successful integration with legacy systemsDeveloper, R&D Department
• Responsible for developing 3 of 9 core functionalities for UNITEL system which provided Korea's first Windows 95 emulator for online service

• Developed preschool education software for Daewoo Electronics
• Tested and debugged word processor software for Daewoo Electronics

Master'S Degree, Software Engineering

Education record