Gyumin Choi

Greybox — Technical Advisory

Challenge: Enterprise customers needed a trusted technical advisor to unlock the full value of a customer engagement platform.

Solution: Served as primary technical advisor, built a custom A/B testing module for enterprise customers, and led developer workshops promoting LLM-powered engagement best practices.

Impact: Expanded enterprise customer base by 40% and established a repeatable technical advisory motion.

Stack

TypeScriptReactNodePostgresGenerative AI

Deployments

© 2026 Gyumin Choi