Nochul Park Email & Phone Number

Aliso Viejo, CA, US

Irvine, California, United States

• Viant Data Cleanroom Product Developlemt (Snowflake)
• Ad audience data import pipeline implementation and optimization (BigQuery)
• Built CI/CD pipeline for Snowflake/BigQuery development with liquibase/github actions
• Mentoring junior engineers

Orange County, California, United States

• My inquisitiveness led me to co-found a cryptocurrency trading house. As a two-man startup with self-funded capital, we had to be face-paced, hard-working, and most importantly creative to survive the market.
• Develop inter-exchange cryptocurrency arbitrage trading bot. Twenty crypto-exchanges were integrated and tested. In Mar 2022 our bot ranked #140 in terms of transaction volume on our primary cryptocurrency exchange..
• Develop grid trading bot, optimal asset allocation simulator, technical indicator-based trading strategy simulator (Spring Boot, Domain Driven Design, State Modeling)

Irvine, CA

• Shifted focus to Java middleware application layer, quickly adapted to Java technology and multi-team project environment. Enjoyed learning the new technology while delivering quality output.
• Multi-month legacy SOAP API deprecation planning, new API development
• Refer-a-friend, Global eSports café backend development -- data model, API development
• WoW expansion launch support: purchase performance tuning on Oracle PLSQL (15->70 purchases/sec), 15-year worth of WoW license data migration/query optimization for faster login.
• Tech-talk for Blizzard Database Interest Group: Battle.net 3 years of Exadata journey.
• Java/Oracle PL/SQL Integration testing suite for maven build

Irvine, CA

• My main focus was on PLSQL development and query optimization for the Battle.net DB. I was instrumental in the Exadata migration for Battle.net, and the success of this migration inspired WoW and Hearthstone Team to.
• Battle.net DB / Diablo 3 Auction House DB SQL / PLSQL optimization and development.
• Solve tricky Oracle latch and DB connection pool issues surfaced by massive WoW CN outage. -- "latch:cache buffer chains", "latch:row cache objects", "library cache: mutex X", "cursor:pin S", "latch:shared pool".
• Exadata PoC: Planned, executed PoC, convinced CTO to adopt Exadata. WoW / Hearthstone followed.
• Developed in-house PL/SQL source code version control system -- python PLSQL package deploy script, Jenkins CI, PLSQL unit testing framework (utPLSQL), custom git workflow tailored for DB development
• Developed Oracle developer technical interview questions, conducted technical interviews, and assessed interview results

Seoul, Korea

• I joined the team to prepare the launch of new steaming music service. My role was to build music contents database, contents management system, music recommendation engine, billing system backend. The service was shut.
• Music metadata DB modeling, billing system backend, recommendation engine / API

Seoul, Korea

. Moved to SK CommercePlanet due to spin off of the "11st" biz. Managed team of 4 database engineers

Seoul, Korea

• SK Telecom is the largest telecommunications company in Korea. I joined the team to launch their e-commerce service. My role was twofold. I optimized queries myself and managed / collaborated with outsourced.
• Lead pre/post launch SQL optimization, which earned me “Outstanding Employee of 2008” award

Seoul, Korea

• In 2007 Gmarket was the largest eCommerce service in Korea. (3rd as of Dec 2022) It was enlisted on NASDAQ in 2006 and acquired by eBay in 2007. I contributed to the success by optimizing the database to cut costs and.
• Thorough query optimization reduced DB CPU usage from 90% to 50%, earned special recognition.
• Verify all the TSQL code before production rollout, which allowed no more than 60% of DB usage.
• Introduce SSIS ETL solution to optimize search engine index DB Job. Execution time was reduced by 50% and resulted in up-to-date search result on the website.