Lily Ellis

Overview

25 years in software engineering, the last 5 at Trellis Bio, where I lead the infrastructure team. Built the experimentation framework 29 product teams use to ship changes safely. Before that: RBC and EY. Most at home with Kubernetes and AWS.

Checks messages twice a week

Experience

1. CTO

   Apr 2022 - Present
   Trellis Bio · 4 yr 6 mo · Full-time · Calgary, AB
   • Led the migration of 52 services to Kubernetes.
   • Grew the infrastructure team from 4 to 18 engineers.
   • Brought on-call pages for infrastructure down from 29 a week to 1.
2. Site Reliability Engineer

   Jun 2020 - Apr 2022
   RBC · 1 yr 10 mo · Full-time · Calgary, AB
   • Shipped a rewrite that took build times from 27 minutes to under 3.
   • Moved 85% of infrastructure traffic off a legacy monolith without a customer-facing incident.
3. Senior Engineering Manager

   Dec 2016 - Jun 2020
   EY · 3 yr 6 mo · Full-time · Calgary, AB
   • Cut p99 latency on the infrastructure services from 416ms to 168ms.
   • Moved 84% of infrastructure traffic off a legacy monolith without a customer-facing incident.
4. Senior Site Reliability Engineer

   Aug 2015 - Dec 2016
   Cohere · 1 yr 4 mo · Full-time · Calgary, AB
   • Shipped a rewrite that took build times from 27 minutes to under 6.
5. Director of Engineering

   Dec 2012 - Aug 2015
   Shopify · 2 yr 8 mo · Full-time · Calgary, AB
   • Shipped a rewrite that took build times from 27 minutes to under 2.

No references yet.

Education

1. University of Toronto

   BASc, Computer Science
   1996 - 2000