Stella Choi

Led development of VibeVerse, a vibe-based recommendation system powered by LLM, RAG, and a conversational UI, focusing on AI-driven user experience and natural interaction design.

Executed data-driven brand campaigns in SFMC using Journey Builder, Automation Studio, and AMPscript to drive engagement and conversions. Managed segmentation, testing, deployment, and reporting to lift engagement metrics. Improved SFMC integration through workflow automation and API synchronization. Partnered with enterprise clients to create personalized omnichannel journeys (email, push, in-app) aligned with lifecycle stages. Optimized deliverability and HTML/CSS QA using Litmus. Built mobile-responsive apps with React, Next.js, and Flutter; implemented OAuth/REST APIs and strengthened backend services with Node.js/Express and Zod validation. Designed an in-house survey platform to reduce third-party survey costs.

Performed security compliance tests on L3/L4 network devices to ensure alignment with national security protocols and cryptographic standards. Streamlined vendor communication by introducing ticketing workflows and standardized test templates, cutting certification timelines by 40%. Gained hands-on experience with network protocol analysis, system-level troubleshooting, and policy-driven testing workflows within a regulated security environment.