Customer-Facing Technical Partner
Bridging Engineering, Integration, and Business Growth
Hello, my name is
Chuck Hyun Choi
Solutions engineer bridging customer needs, technical architecture, and scalable SaaS implementation.
About me
Experience
Pulmuone Foods USA, Inc.
Solutions Engineer — Internal Business Systems
Led cross-functional solution discovery and built API-integrated workflow systems. Delivered bilingual onboarding to drive adoption and long-term utilization.
2023 - Present
HubSpot
Software Engineer
Owned front-end development of core automation features (Undo/Redo, Folder Management), partnering cross-functionally to deliver scalable workflow capabilities within HubSpot’s CRM platform.
2021 - 2023
HubSpot
Tech Consultant — Pro Services
Served as primary technical advisor for CMS and CRM integrations. Partnered with sales and engineering across pre- and post-sales engagements. Maintained NPS above 90.
2020 - 2021
HubSpot
Technical Support Specialist
Resolved complex web infrastructure issues involving HTTP(S), DNS, API integrations, and authentication systems. Reproduced deployment failures and built troubleshooting frameworks to reduce escalation handling time.
2018 - 2020
Skills
Solution Engineering
- Technical Discovery
- Proof of Concept (POC)
- Value Selling
- Enterprise Architecture
- Implementation Strategy
- Cross-functional Collaboration
Integrations & Infrastructure
- REST APIs
- API Integrations
- HTTP(S)
- DNS
- Authentication Flows
- Cloud Architecture
- Enterprise SaaS
Data, Automation & AI
- SQL
- Python
- Data Modeling
- Workflow Automation
- Generative AI (LLMs)
- AI-assisted Development
- Power BI
Customer Enablement
- Technical Onboarding
- Root Cause Analysis
- Stakeholder Alignment
- HubSpot CRM & CMS
- Bilingual Communication (EN/KR)
Web Development
- React
- Next.js
- JavaScript
- TypeScript
- HTML
- CSS
Education
General Assembly
Software Engineering Immersive
11/2020 - 05/2021
General Assembly
JavaScript & Front-end Web Development
05/2019 - 04/2020
Cal Poly Pomona University
B.S. in Hospitality Management
09/2012 - 06/2016
Projects
Demo apps paired with product walkthroughs, discovery context, and implementation notes.
Multi-tenant SaaS AI knowledge base
Beacon
Live demo
Beacon helps teams upload company documents, manage workspace access, and ask natural-language questions that return grounded answers with citations from only the documents each user is authorized to access.
Video walkthrough coming soon
Discovery call, product intro, and demo recording
- Tenant, role, and department-aware authorization
- Private document upload, parsing, chunking, and search
- AI answers with citations from authorized context only
- Supabase Postgres, Storage, RLS, and pgvector
Next.jsReactTypeScriptSupabaseOpenAI
Demo app + discovery call walkthrough
Project Two
Coming soon
A second project will live here with a demo app link and an embedded intro recording that walks through discovery, product thinking, and the app demo.
Video walkthrough coming soon
Discovery call, product intro, and demo recording
Project details will be added here.
Professional Work
Selected projects from my work at Pulmuone and HubSpot, focused on discovery, technical implementation, and turning business needs into scalable systems.