About
A Sydney-based senior software developer connecting recent web delivery with earlier systems engineering.
I'm Youngsan Song, a senior software developer based in Sydney. I work across web interfaces, C#/ASP.NET integration and Azure-hosted applications, with recent professional experience in healthcare platforms and public websites.
Recent professional work
At Partizan Health, I delivered enhancements, maintenance and production support across patient and healthcare-professional platforms, alongside related React Native mobile work. Before that, at Cypha Interactive, I worked across frontend and backend delivery, website maintenance and Azure operations for government, cultural and commercial organisations.
An engineering foundation
Earlier roles in Android, Linux and telecommunications involved integration, troubleshooting and software maintenance. That experience informs how I approach existing web applications: understanding how the parts connect, investigating faults and supporting systems already in use.
View experience →Independent work
Recall · September 2026
Recall helps adult learners turn difficult study material into focused practice and later review.
I led the product direction, identified weaknesses in the learning experience, and guided AI-assisted implementation and testing using Codex.
Read Recall story →Working together
Open to part-time or casual software-development opportunities.
I am most useful on teams that need someone comfortable moving between interface work, C#/ASP.NET integration, production support and unfamiliar existing systems.