I am excited to apply for the Full-Stack Software Engineer (Backend-Focused) position. With more than 20 years of experience building scalable software across cloud, VoIP, and real-time communication systems, I bring deep backend engineering expertise along with strong full-stack capabilities.

Experience

AltigenSoftware Engineer

2015 — Now

United States

Cloud Infrastructure & Deployment

Designed and deployed Anconnect server systems on Azure Kubernetes Service (AKS) for in-house and Fiserv environments, developed using Python and Go.

Automated provisioning and deployment using Terraform, Helm, and YAML, ensuring scalable and reliable infrastructure.

VoIP & API Development

Developed SIP CallInfo Proxy (C# REST API) to intercept, modify, and forward SIP messages.

Developed PBXInfo Proxy integrating AS7 and CoreViewUC for communication, session/role control, and data exchange.

Unified Communications Platforms

Developed CoreViewUC App (React, JavaScript) supporting voice, chat, and SMS, integrating with AS7 for SIP signaling and call control.

Built CoreViewUC for Android (Kotlin), extending UC capabilities to mobile.

Created modular, reusable React components for scalable and maintainable frontends.

Service Hub & Team Portal

Developed centralized Service Hub (C#, JavaScript/jQuery, SSO) integrating MaxACD Admin, Max Communicator, MaxReport, and UMS.

Implemented Team Portal with real-time call tracking and automated billing workflows, including usage logging and account management.

Max Communicator

Developed a unified voice + chat client (C# backend, ReactJS frontend) leveraging Mattermost for collaboration.

Education

Inha University 인하대학교

Experience

Education

Bachelor's degree