Sophia Esther Park

Overview

Based in Vancouver. I lead platform engineering at Mosaic Labs. Shipped 17 launches on the developer platform team without a rollback. Shipped a rewrite that took build times from 16 minutes to under 6. Most at home with Kubernetes and Backstage. Home cook with strong opinions about biryani.

Answers in batches on Fridays

Experience

1. CTO

   Nov 2025 - Present
   Mosaic Labs · 11 mo · Full-time · Vancouver, BC
   • Reduced cloud spend on developer platform by 29% in two quarters.
   • Cut p99 latency on the developer platform services from 572ms to 46ms.
2. Senior Platform Engineer

   Apr 2022 - Jul 2025
   Deloitte · 3 yr 3 mo · Full-time · Vancouver, BC
   • Built the experimentation framework 6 product teams use to ship changes safely.
   • Moved 95% of developer platform traffic off a legacy monolith without a customer-facing incident.
3. Platform Engineer

   Sep 2020 - Apr 2022
   BMO · 1 yr 7 mo · Full-time · Vancouver, BC
   • Shipped 17 launches on the developer platform team without a rollback.
   • Moved 88% of developer platform traffic off a legacy monolith without a customer-facing incident.
4. Senior Platform Engineer

   Nov 2018 - May 2020
   Bell Canada · 1 yr 6 mo · Full-time · Vancouver, BC
   • Brought on-call pages for developer platform down from 34 a week to 3.
5. Platform Engineer

   Apr 2015 - Nov 2018
   Scotiabank · 3 yr 7 mo · Full-time · Vancouver, BC
   • Moved 89% of developer platform traffic off a legacy monolith without a customer-facing incident.

Projects

No references yet.

Education

1. Western University

   HBA, Mathematics
   2009 - 2013