About

My name is Sumner, and I live in Denver, Colorado. I am a Senior Implementation Tech Lead at Can/Am Technologies and I run a business called Nevarro which provides education services such as computer science and mathematics tutoring. I’m also a 4th Degree Black Belt and certified instructor in ATA Taekwondo and a Colorado School of Mines alum (bachelor’s in CS, 2018; masters in CS, 2019).

I like building software which solves difficult and real problems, and I enjoy helping others develop their careers in software. I have had the opportunity to solve many interesting and difficult problems throughout my career. I have also had the opportunity to teach multiple computer science courses at a university level.

In my job at Can/Am I lead the engineering team responsible for building integrations with third-party vendors. I’ve been working to improve team processes and define expectations for engineers.

Previously, I worked at Beeper building lots of things related to the Matrix protocol including cryptography libraries¹ and the mautrix bridges. I also started and was a core member of the Hungryserv project which enabled us to scale from hundreds to tens of thousands of users. I wrote about the technical and community aspects of Matrix on my blog, and I’ve given a few talks related to Matrix at conferences². I was elected to the Matrix Governing Board as an individual member in 2024.

When I’m not programming, I enjoy training in ATA taekwondo under Chief Master Corina Black where I am a 4th Degree Black Belt and certified Level 3 Certified Legacy Instructor. I also enjoy playing soccer, volleyball, and racquetball when I have the chance. During high school, I won the FRCCA Soccer State Championship with Denver Eagles my senior year. I have also won multiple state titles in ATA taekwondo.