Mr. Latte

About

Freelance Software Engineer | Full Stack | Building Since 2002

About Me

I am a software engineer based in Seoul, South Korea. Since 2002, I have worked in software development for over two decades, navigating projects across diverse environments—from early-stage startups to established enterprises, from desktop applications to cloud-native systems.

The technology landscape has transformed dramatically over the years, and I have evolved with it: from Windows desktop development to mobile apps, from monolithic architectures to microservices, from on-premise servers to cloud infrastructure. Each transition has been an opportunity for growth.

I hold M.S. degrees in both Computer Science and Business Administration, combining technical depth with business perspective.

Experience

Aug 2021 - Present: Freelance

Building across web, mobile, and cloud. Running my own services alongside client projects.

Oct 2016 - Aug 2021: Freelance

Transitioned to full-time freelancing. Collaborated with clients across various industries, expanding full-stack expertise.

Aug 2015 - Dec 2016: Eazler (Executive & Engineer)

Dual role at a business messaging startup—managing operations while building products. Developed a secure messenger adopted by international government agencies.

Feb 2003 - Jun 2015: ESTsoft (Lead Programmer)

12+ years building large-scale products serving tens of millions of users. Led development teams and delivered software at scale.

Jan 2002 - Feb 2003: Comcast Korea (Developer)

First role. Built internet broadcasting solutions and Windows applications.

Education

• 2019 - 2020: B.S. in Social Welfare (Self-Education Examination)
• 2012 - 2015: M.A. in Business Administration (MBA), Korea National Open University
• 2009 - 2011: M.S. in Computer Science, Chung-Ang University
• 1999 - 2008: B.S. in Computer Software, Gachon University

Services

Currently building and operating:

• InverseOne - Algorithm-based contrarian investment analysis platform for Korean, US, and Japanese stocks and cryptocurrencies
• Libsac - Comprehensive platform providing daily updates on competitions, events, performances, and lectures
• GameSnapshots - Community platform for sharing game screenshots and connecting with fellow gamers
• Hizine - Film and drama location discovery platform for planning trips to real-world filming spots
• Reputo - Career guidance platform for students featuring success stories, roadmaps, and mentoring from industry professionals
• StartupXO - Human-curated talent matching platform connecting AI projects and startups with qualified freelance professionals

Projects

See Projects for the full list.

Research & Patents

Papers

• Anomaly Detection based on Compression Data using Clustering Algorithm — M.S. Thesis, 2011
• K-means 클러스터링을 이용한 압축 기반 이상탐지 — KIISE Journal, 2012

Patents

• User Authentication Method In Metaverse — KR 10-2022-0059528
• Management System and Method for Store Having a Function of Congestion Detection — KR 10-2019-0131352

Credentials

Key Certifications

• Engineer Information Processing (정보처리기사)
• Linux Master Level 1
• Computer Literacy Level 1
• RPA Developer Advanced Certification, UiPath

Online Certifications

• Blockchain Specialization, Coursera (University at Buffalo)
• Google Analytics Certifications
• Various UiPath RPA certifications