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Hi, I'm William Lin, a Senior Software Engineer based in Elmhurst, NY. With extensive experience in building scalable backend systems, real-time telehealth solutions, and AI-driven features, I enjoy designing and deploying technology that improves operational efficiency and user experience. I love mentoring teams and continuously learning the latest in software and AI technologies. I’ve worked on everything from backend microservices to frontend user interfaces, and I’m passionate about cloud infrastructure and DevOps practices. When I’m not coding or architecting systems, I enjoy exploring new AI tools and contributing to projects that make a real-world impact, especially in healthcare.…Hi, I'm William Lin, a Senior Software Engineer based in Elmhurst, NY. With extensive experience in building scalable backend systems, real-time telehealth solutions, and AI-driven features, I enjoy designing and deploying technology that improves operational efficiency and user experience. I love mentoring teams and continuously learning the latest in software and AI technologies. I’ve worked on everything from backend microservices to frontend user interfaces, and I’m passionate about cloud infrastructure and DevOps practices. When I’m not coding or architecting systems, I enjoy exploring new AI tools and contributing to projects that make a real-world impact, especially in healthcare.

William Lin

Developer, Web Developer, Programmer, +2

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Hi, I'm William Lin, a Senior Software Engineer based in Elmhurst, NY. With extensive experience in building scalable backend systems, real-time telehealth solutions, and AI-driven features, I enjoy designing and deploying technology that improves operational efficiency and user experience. I love mentoring teams and continuously learning the latest in software and AI technologies. I’ve worked on everything from backend microservices to frontend user interfaces, and I’m passionate about cloud infrastructure and DevOps practices. When I’m not coding or architecting systems, I enjoy exploring new AI tools and contributing to projects that make a real-world impact, especially in healthcare.…Hi, I'm William Lin, a Senior Software Engineer based in Elmhurst, NY. With extensive experience in building scalable backend systems, real-time telehealth solutions, and AI-driven features, I enjoy designing and deploying technology that improves operational efficiency and user experience. I love mentoring teams and continuously learning the latest in software and AI technologies. I’ve worked on everything from backend microservices to frontend user interfaces, and I’m passionate about cloud infrastructure and DevOps practices. When I’m not coding or architecting systems, I enjoy exploring new AI tools and contributing to projects that make a real-world impact, especially in healthcare.

Available to hire

Hi, I’m William Lin, a Senior Software Engineer based in Elmhurst, NY. With extensive experience in building scalable backend systems, real-time telehealth solutions, and AI-driven features, I enjoy designing and deploying technology that improves operational efficiency and user experience. I love mentoring teams and continuously learning the latest in software and AI technologies.

I’ve worked on everything from backend microservices to frontend user interfaces, and I’m passionate about cloud infrastructure and DevOps practices. When I’m not coding or architecting systems, I enjoy exploring new AI tools and contributing to projects that make a real-world impact, especially in healthcare.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Javanese

Advanced

Aragonese

Intermediate

Work Experience

Senior Software Engineer at SimplePractice, LLC

August 1, 2019 - Present

Leveraged cutting-edge technologies to architect scalable, secure, real-time telehealth solutions, enhancing user experience and operational efficiency while mentoring and upskilling the engineering team. Architected scalable backend systems using Java (Spring Boot) and Node.js (NestJS), deploying microservices on AWS ECS and Lambda. Designed event-driven services with Apache Kafka and AWS EventBridge for real-time communication across services. Integrated secure databases including PostgreSQL, MongoDB, DynamoDB, and Elasticsearch, optimizing queries for low latency and high availability. Developed healthcare-specific APIs ensuring HIPAA compliance with OAuth2 access control and versioned REST/GraphQL endpoints. Created AI-driven automated patient routing, reducing wait times by 40% and handling 60% of inquiries without human intervention. Built voice agents fine-tuned with healthcare data, reducing administrative overhead by 30%. Built HIPAA-compliant telehealth UI using React, TypeSc

Software Engineer at Expedia Group, Inc

August 1, 2019 - July 10, 2025

Enhanced platform scalability to support high-volume concurrent users during peak periods, improving real-time booking feature stability. Redesigned legacy frontend into modular micro-frontends with React.js and TypeScript, improving page load performance and user experience. Applied Test-Driven Development with Jest, reducing post-release defects by 30%. Adopted mobile-first responsive design to increase customer satisfaction and reduce bounce rates. Developed scalable microservices using Java (Spring Boot) and Ruby on Rails with Kafka event-driven architecture for booking and inventory management. Optimized data storage with Cassandra, PostgreSQL, and Redis caching for data integrity and availability. Migrated backend services to AWS Kubernetes (EKS), implementing blue-green deployments, Terraform infrastructure as code, and CI/CD pipelines via Jenkins.