Open to opportunities

William Chang

@williamchang5

Message

Senior software engineer specializing in cloud-native, scalable full-stack and AI-assisted systems.

United States

Message

What I'm looking for

I seek senior engineering roles building scalable, secure cloud-native systems with strong CI/CD, mentorship opportunities, and impact on product and architecture.

I am a Senior Software Engineer with over 10 years building cloud-native, full-stack platforms across healthcare, fintech, and SaaS, focused on secure, high-performance systems and real-time, AI-assisted applications. I design microservice and event-driven architectures, optimize databases and cloud infrastructure, and deliver HIPAA- and GDPR-compliant solutions that scale to millions of queries and minutes of audio.

I lead end-to-end product delivery, mentor engineers, and improve developer experience through reusable SDKs, CI/CD automation, and infrastructure-as-code. My accomplishments include launching real-time clinical transcription and discovery platforms, migrating legacy systems to Kubernetes, reducing release cycles by 40%, and improving provider documentation efficiency by over 35%.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Tempus

Jan 2019 - Present (7 years 5 months)

Led development of the Notetaker voice assistant and Loop discovery platform, delivering real-time clinical transcription and structured note generation that improved provider documentation efficiency by over 35% and supported millions of audio minutes monthly.

Python Go Kafka TypeScript Lambda S3 Terraform PostgreSQL Elasticsearch

Software Engineer

Stripe

Aug 2013 - Dec 2018 (5 years 4 months)

Contributed to Payments and Connect, building backend microservices and merchant dashboards that scaled to millions of daily transactions and reduced fraud false positives by 23% while improving API response times by 25%.