Lee SeungHwan

Software Engineer

• Built Greating from launch: exhibitions, products, events, and promotions, alongside orders, membership, customer support, and infrastructure. An unusually wide scope for one engineer, and the breadth I wanted.
• Moved deployment from manual SVN to Jenkins, then led the introduction of Bitbucket and Bamboo, writing the deployment shell scripts and leading the infrastructure analysis.
• Took data modeling seriously, not just queries, and earned the SQLD (data modeling and SQL) certification.
• Led Papia, the in-house AI learning crew, and brought agentic coding into the organization. First result was a Teams webhook tracker that spread internally.
• Since November 2025, on The Hyundai e-commerce team: five global brands (COS, ARKET, & Other Stories, TOTEME, NANUSHKA) and five NCP shop-in-shops. Stack: Akamai, React, Next.js, Tomcat, Oracle.

Sole operator

• Operate thirteen production sites as one system: a master agent plus one worker per site, with a human kept in the loop for judgment. Automated a tmux trigger loop, watched the AI sessions it spawned OOM the machine, and redesigned it so routine work queues but I approve what actually runs.
• Coordination is a mailbox and a filesystem borrowed from 1970s mail systems, chosen so I could reason about the whole thing end to end.
• Hold LLM output quality with a context budget and a validation layer: base specs under 200 lines, a dedicated posting spec, IndexNow automation, and checks against the exact signals search engines penalize as spam, so volume never becomes a spam network.
• Treat rendering as both a revenue and a cost variable. Diagnosed an RPM drop caused by a caching change, moved from Vercel ISR to a locally-prebuilt static pipeline to control cost, fixed OOM at build scale, and now tune SSG / SSR / ISR per site against RPM and the bill.
• Built first-party analytics across all thirteen properties: traffic attribution, keyword-level search intent, session tracking, bot filtering. About 100,000 page views a month, 97% from organic search. Revenue grew from $15 to $500+ a month as market validation.