Available to hire
I am an IT professional with over 5 years’ experience providing enterprise system support and incident resolution for more than 4,000 employees. I specialize in troubleshooting, system administration, and collaborating with cross-functional teams to keep critical systems available.
I am driven by reducing downtime, streamlining workflows, and improving user satisfaction. I enjoy turning technical challenges into practical improvements and working closely with stakeholders to deliver value.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Beginner
Language
English
Advanced
Korean
Fluent
Japanese
Advanced
Work Experience
Enterprise Systems Developer & IT Support at BGF Retail
May 1, 2025 - September 25, 2025Operated enterprise collaboration platforms for 4,000+ employees, maintaining SLA uptime. Replaced SMS alerts with messenger bot, saving ₩900K/year (~£600) and adding instant access links. Managed SSO, SSL, and affiliate links across 10+ mission-critical systems. Migrated 4,000+ HR records during restructuring with zero downtime. Built APIs and digital approval forms, cutting workflow processing time by 25%. Upgraded internal messenger Flow, boosting adoption by 15% in 1 quarter. Automated mail server monitoring, reducing downtime incidents 30% YoY.
Mobile App Operator & Full-Stack Developer at Dongkuk Systems
October 1, 2019 - June 3, 2022Built mobile unified search with Elasticsearch, cutting search time 40% for groupware users. Developed Caller ID mobile app (Java, Angular.js, Cordova), adopted by 1,000+ employees in 3 months. Upgraded document conversion servers, reducing errors by 30%. Deployed uPrism WebRTC video conferencing, enabling 100+ concurrent participants and lowering vendor costs. Led groupware migration to Naver Cloud, supporting rollout to 3,000+ employees. Improved CI/CD pipelines with Git/Jenkins, shortening deployment cycles by 20%.
Education
B.A. in Global Media at Soongsil University, IT College, Seoul, South Korea
March 1, 2013 - February 14, 2019Exchange Student in Marketing & International Management at Saxion University, Enschede, Netherlands
January 1, 2016 - June 30, 2016NCS-based Vocational Training Program (Java, JSP, Spring Framework) at Unknown
January 1, 2018 - June 30, 2019Qualifications
Youth Mobility Scheme Visa (Full right to work in the UK)
July 30, 2024 - July 30, 20266-month Developer Training – Java, JSP, Spring Framework
January 1, 2018 - January 1, 2019Industry Experience
Retail, Software & Internet, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Beginner
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