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About

Freelance Software Engineer | Full Stack | Building & Adapting Since 2002

Cover Letter

I am a software engineer based in Seoul, South Korea, with over two decades of hands-on experience in software development. Since 2002, I have navigated through countless projects across diverse environments, from early-stage startups to established enterprises, from desktop applications to modern cloud-native systems.

What defines my career is adaptability. The technology landscape has transformed dramatically over the years, and I have continuously evolved with it: from Windows desktop development to mobile apps, from monolithic architectures to microservices, from on-premise servers to cloud infrastructure. Each transition brought new challenges, and each challenge became an opportunity to grow.

I hold M.S. degrees in both Computer Science and Business Administration, combining technical depth with strategic thinking. My passion lies in solving real-world problems through technology, whether that means building products used by millions or crafting elegant solutions for niche use cases. I believe that the ability to adapt and learn quickly is more valuable than expertise in any single technology, and I bring that mindset to every project I undertake.

Tags

Computer Science, Full Stack, MBA, Software Engineer, Mobile, Android, Web, iOS, Back-end, Front-end

Qualification Summary

  • Professional software development experience since 2001, spanning multiple platforms and technologies
  • Deep understanding of data structures, algorithms, and software architecture patterns
  • Full-stack expertise spanning front-end, back-end, mobile, and cloud infrastructure
  • Proven track record of troubleshooting complex systems and optimizing performance
  • End-to-end project experience from initial design through production deployment
  • Proficient in diverse languages and frameworks, with rapid adoption of new technologies
  • Built and maintained software products serving over 10 million users

Education and Training

  • March, 2019 - August, 2020 B.S. degree in Department of Social Welfare, Examination for Self-Education
  • March, 2012 - August 2015 M.A. degree in Department of Business Administration, Korea National Open University
  • March, 2009 - August 2011 M.S. degree in Department of Computer Science, The Graduate School of Information, Chung-Ang University
  • March, 1999 - February 2008 B.S. degree in Department of Computer Software, Gachon University (Kyungwon University)

Work Experiences

  • August, 2021 - Present: Freelance Software Engineer

    Independent full-stack developer working on diverse projects including web applications, mobile apps, and cloud-based services. Building and operating personal SaaS products while taking on contract opportunities. Continuously adapting to new technologies and industry trends.

  • October, 2016 - August, 2021: Freelance Software Engineer

    Full-stack freelance developer specializing in the design and development of mobile, server, and web applications. Delivered projects for various clients across different industries.

  • August, 2015 - December, 2016: Eazler, Executive Member & Software Engineer

    Served as an executive member and software engineer at Eazler, a South Korean startup specializing in business messaging and video technologies. Led the development of mobile and web applications, including a mobile messenger adopted by international government agencies. Combined technical leadership with strategic decision-making in a startup environment.

  • February, 2003 - June, 2015: ESTsoft, Lead Programmer

    Served as Lead Programmer and Software Engineer at ESTsoft, a leading South Korean software company. Contributed to the development of widely used products such as ALTools and InternetDISK, impacting over 90% of PC users in South Korea. Also contributed to the development of CABAL Online, a successful MMORPG with international reach. This role provided extensive experience in large-scale software development and team leadership.

  • January, 2002 - February, 2003: Comcast Korea, Software Engineer

    Developed internet broadcasting solutions for Windows and web applications at Comcast, a South Korean internet broadcasting service company. Also created an inventory management solution for warehousing and a barcode application for Windows CE. This role honed skills in developing solutions for diverse platforms and business needs.

Books

  • 창업학

    디지털 콘텐츠 대여 커피전문점 창업 계획 사례(사업계획서):337-358, 2013년 2월;박춘엽. 보명Books, ISBN 978-89-6366-072-1

Papers

Patents

Projects

See Projects for a complete list of my work.

Services

Personal projects and platforms I’ve built and operate independently.

  • 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

Certifications

  • RPA Developer Foundation, UiPath, April 14, 2020
  • Entrepreneurship Foundations, LinkedIn, April 8, 2020
  • ExO Foundations, OpenExO, March 11, 2020
  • Advanced Google Analytics, Google, March 11, 2020
  • Google Analytics for Beginners, Google, March 10, 2020
  • Working Remotely, LinkedIn, March 1, 2020
  • Working Remotely (NASBA), LinkedIn, March 1, 2020
  • Chief Technology Officer Career Guide, LinkedIn, January 3, 2020
  • Programming Foundations: Fuzzy Logic, LinkedIn, December 16, 2019
  • Blockchain Specialization, Coursera, University at Buffalo & The State University of New York on Coursera, September 11, 2019
  • Blockchain Platforms, Coursera, University at Buffalo & The State University of New York on Coursera, September 11, 2019
  • Decentralized Applications (Dapps), Coursera, University at Buffalo & The State University of New York on Coursera, September 5, 2019
  • Smart Contracts, Coursera, University at Buffalo & The State University of New York on Coursera, August 26, 2019
  • Blockchain Basics, Coursera, University at Buffalo & The State University of New York on Coursera, August 24, 2019
  • Blockchain Basics, LinkedIn, August 23, 2019
  • UiPath Security Training, UiPath, August 15, 2019
  • UiPath Licensing Training, UiPath, August 15, 2019
  • UiPath 2019.4 Updates, UiPath, August 15, 2019
  • RPA Developer - SAP Automation Training, UiPath, August 15, 2019
  • Level 3 - Advanced Training, UiPath, August 15, 2019
  • RPA Developer Advanced Certification, UiPath, August 8, 2019
  • Level 2 - Orchestrator 2018.3, UiPath, August 4, 2019
  • Level 1 - Foundation 2018.3, UiPath, August 4, 2019
  • Starter Training, UiPath, August 4, 2019

Licenses

  • 사회복지사 2급, 보건복지부
  • 정보처리기사, 한국산업인력공단
  • 사무자동화산업기사, 한국산업인력공단
  • 리눅스마스터 1급, 한국정보통신산업협회
  • 정보기기운용기능사, 한국산업인력공단
  • 웹디자인 기능사, 한국산업인력공단
  • 워드프로세서 1급, 대한상공회의소
  • 컴퓨터 활용능력 1급, 대한상공회의소
  • 전자상거래관리사 2급, 대한상공회의소
  • MCAS Master, Microsoft
  • GTQ 1급, 한국생산성본부
  • 유비쿼터스지식능력, 한국 RFID USN협회
  • 인터넷 정보관리사 전문가, 한국정보통신산업협회

Completion of Courses

  • 이더리움 기반 스마트 컨트랙트 개발 과정 (1차), 한국인터넷진흥원, February 22, 2018 - February 28, 2018 (40 hours)
  • Biblical Financial Study, 크라운제정사역, May 3, 2015 (10 weeks)
  • 리더십 스킬과 테크닉, 한국능률협회, March 5, 2012 - March 7, 2012 (20 hours)
  • MS Core 마케팅, 삼성SDS 멀티캠퍼스, October 1, 2007 - October 31, 2007
  • e-MBA 전략경영(ver.2.0), 삼성SDS 멀티캠퍼스, September 1, 2007 - September 30, 2007
  • 관리자능력향상(EMC), 한국생산성본부, September 12, 2005 - September 14, 2005 (20 hours)
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