Open to opportunities

William Lin

@williamlin4

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Senior software engineer specializing in scalable cloud systems, telehealth, and AI-driven backend solutions.

United States

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What I'm looking for

I seek senior engineering roles building scalable, secure cloud systems with strong engineering culture, mentorship, and opportunity to lead architecture and AI-driven product work.

I am a senior software engineer with deep experience building scalable, HIPAA-compliant telehealth platforms and real-time systems. I have led frontend and backend efforts using React/Next.js, Java Spring Boot, Node.js/NestJS, and Go, and delivered AI-driven features that reduced patient wait times and administrative overhead.

I excel in designing microservices, event-driven architectures, and CI/CD pipelines on AWS, automating infrastructure with Terraform, and establishing observability with Datadog and Prometheus. I mentor engineers, improve developer workflows, and consistently ship high-quality, production-ready software that increases performance, reliability, and user satisfaction.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

SimplePractice, LLC

Aug 2019 - Present (6 years 2 months)

Architected scalable, HIPAA-compliant telehealth platform used by 94,000 monthly active users, reduced frontend load time by 40%, and implemented AI-driven patient routing that cut wait times 40% and automated 60% of inquiries.

React TypeScript Next.js Spring Boot AWS Kafka GraphQL Terraform

Software Engineer

Expedia Group, Inc

May 2015 - Aug 2019 (4 years 3 months)

Improved platform scalability and reliability for high-volume booking flows, migrated services to Kubernetes/EKS, and reduced post-release defects by 30% through TDD and modular micro-frontends.