Jonathan (Koz) Kozolchyk, General Manager for Certificate Services at AWS, joins Corey on Screaming in the Cloud to discuss the best practices he recommends around certificates. Jonathan walks through when and why he recommends private certs, and the use cases where he’d recommend longer or unusual expirations. Jonathan also highlights the importance of knowing who’s using what cert and why he believes in separating expiration from rotation. Corey and Jonathan also discuss their love of smart home devices as well as their security concerns around them and how they hope these concerns are addressed moving forward. 

Jonathan is General Manager of Certificate Services for AWS, leading the engineering, operations, and product management of AWS certificate offerings including AWS Certificate Manager (ACM) AWS Private CA, Code Signing, and Encryption in transit. Jonathan is an experienced leader of software organizations, with a focus on high availability distributed systems and PKI. Starting as an intern, he has built his career at Amazon, and has led development teams within our Consumer and AWS businesses, spanning from Fulfillment Center Software, Identity Services, Customer Protection Systems and Cryptography. Jonathan is passionate about building high performing teams, and working together to create solutions for our customers. He holds a BS in Computer Science from University of Illinois, and multiple patents for his work inventing for customers. When not at work you’ll find him with his wife and two kids or playing with hobbies that are hard to do well with limited upside, like roasting coffee.