Jan 2020 – Apr 2022 · 2 yrs 3 mos · Seoul, South Korea

• Initiated a Cloud First strategy for SK Innovation and its subsidiaries in 2020 as part of a Digital Transformation and Green Business initiative on IT infrastructure, additionally promoting a new Cloud governance and process for controlled and scalable Cloud deployment
• Enhanced consistency, efficiency, security, and control in Cloud by implementing an enterprise-scale landing zone with Hub and Spoke in 2021, which further encouraged the best Cloud practice for identity and access management, networking, logging, monitoring, resource control, and security
• Executed a Cloud migration strategy and plan by running Cloud readiness assessment for 324 digital products in 3 months; coordinating as DevOps, network, and security teams; preselecting 1,659 physical servers; performing total cost of ownership analysis; and determining a new Cloud service provider
• Furthered operational excellence and cost efficiency by leading Lift and Shift on 15 digital products from IBM Cloud to Azure after running a series of assessments
• Rebuilt an RPA digital product which processes a physical document to ERP by adopting Azure Serverless Functions which saved about $10,000 annually after reviewing and modifying its business and IT process
• Assess and evaluate every Cloud TCO for a further architecture change or review (such as hybrid or on-premise based on business and technical requirements)
• Built and managed a CI/CD Pipeline with GitLab and AWS CodePipeline
• Performed IaC with CloudFormation and Terraform (partially)
• Promoted Azure Global Network for firms in U.S., Singapore and Europe, reducing latency from 365ms to 40ms and saving $100,000 annually

Jan 2018 – Apr 2022 · 4 yrs 3 mos · Seoul, South Korea

• Promoted Digital Transformation (Data, Cloud, DevOps, Agile) for SK Innovation and its subsidiaries
• Improved enterprise data management and utilization by centralizing data with a data lake and pipeline, implementing a scalable and secure data governance and process, providing multiple analytical tools, defining roles and responsibilities, and delivering sets of data strategies for businesses
• Provided a single source data for vendor, material, and MRO to achieve consistency, accuracy and integrity across SK Innovation and its subsidiaries by introducing a Master Data management system, customized to process millions of data for domestic and oversea businesses
• Conducted an IT governance and process innovation to support diversified technology and business partnerships and to better support Digital Transformation with more flexibility and agility
• Regulate 200+ contracts with a total worth over $2B, drafting, reviewing and approving contract terms & conditions. Save $3-5M through negotiation on a yearly basis and Guarantee a proper requirement document
• Manage a yearly budget of $200M, performing budget forecasting, modeling, prioritization, allocation and control for 30+ companies and 300+ stakeholders. Produce monthly and quarterly reports
• Enforce and enhance governance to reduce business risk and ensure Compliance and Security
• Project (Split-Off, MDM, Cloud) and Product (ITSM, Finance/Accounting, MDM, Cloud) Manager for Digital Products in SK Innovation and its subsidiaries

Jun 2017 – Sep 2017 · 3 mos · United States

• Investigate and analyze financial documents of companies during their financial turmoil to ascertain suspected discrepancies between reports from S&P and their financial document
• Isolate each component of asset impairment including inventory write-down and proceeds from multiple sources by looking through their financial document
• Develop a Macro-enabled-Excel spreadsheet that can automatically track URLs and enter the retrieved URLs into the spreadsheet, which reduced expected research time by one month

May 2013 – Feb 2015 · 1 yr 9 mos · Dongducheon, Gyeonggi-do, Korea

• Served Korean military duty with the US Army as Korean Augmentation to the United States Army (KATUSA) and received two official awards for excellent service and achievement from Second Infantry Division (2ID)
• Voluntarily led and implemented an automated staff roster and training planner with Excel VBA which integrated and administered four companies to expedite assignment process and remove schedule misalignment and miscommunication
• Designed a warehouse inventory spreadsheet to locate and manage all items in seven containers for war exercise
• Worked as an English-Korean translator for generals or officials above Major visits to the unit

Mar 2012 – May 2013 · 1 yr 2 mos · Seodaemun-gu, Seoul, Korea

• Created a new online software market and formed a partnership with twenty-one software wholesalers
• Worked as a middleman between wholesalers and retailers, procuring and delivering software to approximately 2,000 individuals across countries in North America, Europe, and Asia
• Led a team of three to expand our global network and operations to a gaming market and extend operating hours globally
• Formed a private network with more than 20 retailers from 13 different countries including the U.S.