Musinsa is the #1 fashion commerce platform in Korea, and the name "Team Musinsa" stands for several companies and services that are owned and operated by Musinsa Inc listed below:* Musinsa Main site & Mobile Apps (https://www.musinsa.com/)* Musinsa Global Site & Mobile Apps (https://global.musinsa.com/choose-location) * 29cm Site & Mobile Apps (https://www.29cm.co.kr/)* Soldout site & Mobile Apps (https://www.soldout.co.kr/ )* Empty site (https://empty.seoul.kr/)* Musinsa Payments (https://www.musinsapayments.com/)* Musinsa Logistics (https://musinsalogistics.co.kr/)* Musinsa Offline Stores (https://www.musinsa.com/offline)Andrew is responsible for the Tech team (UX, Product and Engineering) for all of these companies in the Musinsa Eco-system, as well as playing Co-CEO role for Musinsa Payments Inc. And also, Musinsa Logistics Inc. CEO is reporting into Andrew as well considering his experience from building and running logistics services at Coupang Rocket Delivery and Yogiyo before.Musinsa is growing rapidly in Korea and expanding in the global market, both through online as well as offline stores (Musinsa Standard and Musinsa Store) and now aiming to go public in next few years. In order to optimize the operation of Team Musinsa's services, he will drive OCMP (One-core multi Platform) strategy, and adopt advanced AI across the tech stack to maximize the experience for Customers and Brand designer partners.

Severe competition in the market forced the shareholders to find someone who can spearhead through the challenge, and finally appointed Andrew as a tech based CEO. Andrew tried his best to compete against Coupang Eats and Badmin, but it was truely a tough challenge for Yogiyo given the limited resources and funding. While Andrew and team was suffering, he was recruited by Musinsa CEO to run all of its tech teams, and finally he chose to step down and join Musinsa

Starting from January 2nd, 2023, Andrew has been appointed to expand his role to head up the whole R&D organization at Wesang (roughly ~500 people) including UX, Product development organization in addition to existing CTO role, leading all of engineering, IT, and Security teams.

요기요(Yogiyo) is the 2nd largest food delivery platform in Korea, which has been originated as a subsidy of the major European food delivery player called “Delivery Hero”. It has been recently acquired by consortium composed of private equity partners, Affinity partners and Permira, as well as GS retail group. Andrew was recruited by partners at Affinity partners and Permira to join the newly formed management team as a CTO to drive its growth and innovation. Andrew proposed and built YogiPass X, which is a subscription program that enables customers to deliver food without delivery fee, which influence the whole Korean market later on, and fully rebuilt Yogiyo App with innovative AI features and discount ranking, also he drove the process of rebuilidng logistics solution called Logiyo, and introduced 3P delivery logistics.

Coupang is one of the largest and fastest-growing consumer internet companies in the world, recently went public in NYSE:CPNG. Andrew has been in charge of engineering teams responsible for all of the logistics and fulfillment systems and its innovation, which supports Coupang's hallmark service called "Rocket Delivery".

Head of S/W engineering teams for New Mobility initiatives including Jump bike, Scooter, and other lightweight vehicles, as well as Uber Incubation lab (similar to Google X). Incubation lab gave birth to "Uber Transit" and "Uber Works" (announced on 10/3/2019), and also a few other innovative stealth projects in incubation stage.However, due to pandemic, Uber had to scale down incubation lab, and Jump Inc has been sold to Lime in April 2020, which resulted in laying off majority of Jump team. After considering the choices given to Andrew, whether to work on something else at Uber, or pivot away from Transportation business. Andrew chose to Pivot away and joined Coupang / e-commerce domain.

Founding member of the project and head of Engineering. Joined YouTube in 2014, and built the team from scratch, to later became 4 distinct sub teams with layers of management structure underneath, including client team who's responsible for Android/iOS/Web/TV apps, platform team for handling all of the meta-data processing, business logic, ads / measurement / reporting / internal operation tooling, search & discovery team who handles all the data processing, indexing, ranking, ML pipeline for personalized recommendations, and lastly Linear team who's responsible for building and deploying H/W infrastructure for capturing live TV signal for all of the cable TV channels and local channels in 100+ market.It was a significant investment from Google(~1 billion USD) to build it to innovate the way how we watch TV, and highly praised from the market for its product features and experience. Since initial launch in April 2017, service has been expanded up to top 100 markets in 2018, covering more than 85% of population in US. Team is continue marching towards nationwide coverage, and bringing more innovation to the service.

As a result of consolidating TV related effort at Google, Andrew and his team joined Android platform team in 2013, and spearheaded an effort to extend Android platform to make it a suitable O/S for TV set, STBs for living room via migrating the work we've done in Google TV into Android platform. After about a year of hard work, Android TV platform has been created and launched with Nexus Player on Nov 3, 2014. Since then many TV makers and MSO's adopted the platform for their TVs and STBs and highly successful on growing the device base

Google TV was Google's 1st attempt to create an O/S for TV and other devices in the living room, in order to innovate the way we consume TV content, and finally to innovate TV ads market. Andrew got recruited by the leadership to build the team in Seoul, Korea, Google's Korean office, in order to work closely with leading TV manufacturers, SOC makers and technology partners in the region (Korea, Japan, China and Taiwan)Andrew has built Google TV engineering team in Seoul from scratch, and later, completely took over platform engineering as well as some of the key application services on it, and launched the platform with two IPTV providers in Korea, and LG for their TVs, and later launched in 10+ countries in Europe including SFR / Bougyous (French IPTV provider) for their STBs, and Phillps/TPV/Sony for their TVs, and moved back to Google Headquarter in Mountain View, California in June 2013.During this time, he changed his role at Google from staff software engineer to head of engineering group including engineers, testers, contractors and vendors. He worked with Tier 1 companies in the TV industry (TV makers, SOC makers and system integrators), and stepped up to play a senior engineering representative role of Google TV team, and successfully influenced partners to build a strategy that was aligned with Google. (and Sony / Phillips and many others are still the strong partners of Android TV platform after Google TV has transitioned to Android TV).It was the 1st attempt we've wrapped up with many lessons, so that Google TV's leadership team later were able to spawn off and lead Google's various H/W efforts including Google Pixel program, Chromecast, Google home, and others, based on the experiences we've gained during that time.

Andrew joined Google Inc as a founding member of TV ads team, which was Google's attempt to penetrate TV advertising market. It was moderately successful but wasn't scalable, therefore, Andrew pivoted to TV search, and then founded a project to build a common billing and payment solution for SaaS (Software as a service) products at Google. And successfully launched it for Google AppEngine, Google Voice, Google Apps Premier edition, Google storage and etc.In June 2009, he got an expatriate assignment to Google's Seoul R&D center and initiated a few impactful projects targeting the mobile industry. One of which was Google maps transit navigation feature launched in 440 cities in the world. After that, in 2010, Andrew joined back to TV related project at Google, a.k.a Google TV, and built a platform engineering team in Seoul

Digeo was one of the company Microsoft co-founder Paul Allen started and ran as chairman, and later acquired by ARRIS group inc. At Digeo, Andrew proposed, designed and implemented on-demand video streaming system over cable network from scratch, so that BMC (Digeo's STB) could let users to browse VOD library, and stream and play it on the STB. It was industry's first implementation of fluid video-on-demand service on a cable network with advanced set-top box, and commercially deployed in several cable operators in US including Charter communication. Later on, serving "VOD library" as a extra service on a PayTV operator STB became a "standard" in US and across the globe.

One of the project Andrew prototyped in CTO office has become full-blown engineering project. So, Andrew changed his role from an Architect to engineering manager and led the team to develop highly scalable data distribution system. Also led the effort of building platform independent streaming library for building iBEAM's content distribution/re-direction infrastructure.

Designed and implemented iSFC(iBEAM Streaming Foundation Library), which was multi-platform streaming, traffic load balancing library that runs on various platform including windows, AIX, BSD Linux, Unix and Windows CE. This solution became the "model" of modern online video streaming traffic redirection / load-balancing methodology for CDNs across the globe (Many CDN licensed iBeam patents and S/W). Later, even Google adopted the idea of satellite based streaming distribution as a part of its global data network as well.

Designed and implemented a network game server system similar to Battle.Net from Blizzard. It was the first ever home-grown network game server system developed in Korea, which was scalable up to 50K concurrent users per server, and deployed in Korea and Mesa, Arizona, Phantagram's US branch.It was started as a favor to CEO of Phatagram, who is Andrew's college classmate, asked Andrew to come over and help him out. Whole project completed in one year since inception, then Andrew moved on to iBEAM broadcasting which served Andrew's vision better.

Hanmesoft acquired ESTsoft for about two years (splitted again later). During that time, Andrew took an a SI project for public franchise restaurant called COCO's Korea (total of 44 restaurants and two factories). Andrew has built a team, executed, and finally delivered solution consists of 5,000 pages of documents and 200,000 lines of code runs across more than 60 machines in the private network between office, factory and branch stores.The system consisted of order entry/dispatch management, production management (MRP), prime cost management, EIS system, warehouse management, inventory management, etc.All of those traditional IT system concept was new to Andrew, but he studied all of the required concept quickly through several books in a few months, and then designed and implemented the whole system with his team in just a short of 1.5 years, and deployed at newly built factory in Jinchun, Korea.

Co-founded 4 people programming team with his passionate college mates during 2nd ~ 3rd year of college, came up with an idea of developing a "word processor" without even knowing anything about C/C++ programming 😝. However, he studied everything necessary to achieve it and finally built it in 1.5 years of absolute dedication, and named it as "21th century word processor". It was first distributed as public domain version through online BBS (dial up modem based online forum before Internet was born), and became hugely popular in Korea, downloaded more than 500K times in one month.Team got encouraged by huge response, and decided to commercialize it, so they founded ESTsoft Corporation, and after further development, commercial version of the word processor was launched and produced revenue to build the company.21th century word is remembered as a "passionate challenger" built by young group of talented programmers against Hangul word processor which dominated Korean market, with its innovative multiple document editing feature via virtual memory management, vector font based editing features.This project served Andrew to be able to master all of the computer science basics covering X86 CPU architecture, peripheral management, graphics, memory / file management, data structure and overall S/W design, development, debugging, release process, and became the basis for Andrew to grow into industry leading S/W architect.Later on, ESTSoft went public in Korea, and has been continuously growing (http://www.estsoft.com).Andrew still provides consultation to ESTSoft as it is the first company he founded.