Michael Pawliszyn
Waterloo, Ontario, Canada
Summary
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Rockstar🎓
Top SchoolMichael Pawliszyn is a staff engineer with over 20 years of industry experience who specializes in backend infrastructure, distributed databases, and developer-facing tooling. He led a high-stakes migration at Cash App—splitting the primary MySQL database into a sharded Vitess architecture with under one second of downtime—and designed a VtTablet sidecar that eliminated TLS overhead and simplified fleet operations. His work spans Amazon’s large-scale systems to Cash App’s payment platform, and he’s an active open-source contributor to vitessio/vitess (notably on replication, TLS for Zookeeper, and cloning/schema improvements) and maintainer of Cash App’s backfila data-backfill framework. Based in Waterloo, Ontario, he blends deep operational experience with a propensity for reducing complexity and code size, often delivering durable, low-risk migrations and tools. Currently he’s focused on building open-source infrastructure and exploring AI developer tools, bringing practical production insight to emerging ecosystems.
9 years of coding experience
19 years of employment as a software developer
BMath, Computer Science, Business Option, BMath, Computer Science, Business Option at University of Waterloo
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (13)
databases10
database-administration10
go10
mysql10
database10
kubernetes-pods9
zookeeper9
database-cluster9
kubernetes9
vitess8
cnc8
sha8
testing7
Programming languages (3)
Github contributions (5)
vitessio/vitess
Nov 2017 - Aug 2021
Vitess is a database clustering system for horizontal scaling of MySQL.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:30 commits, 24 PRs, 5 pushes in 3 years 9 months
Contributions summary:Michael primarily contributed to the Vitess project by implementing and modifying features related to replication lag and database management. Their work included configuring the minimum number of discoverable tablets, refining filtering mechanisms based on replication lag, and adding the functionality for TLS enabled Zookeeper connections. Furthermore, the user addressed inconsistencies and provided enhancements to the debug and status functionalities within the system. Additionally, the user implemented improvements for cloning operations and schema management.
mysqltidbhorizontal-scalingsqlvitess
mpawliszyn/vitess
Nov 2017 - Mar 2022
Vitess is a database clustering system for horizontal scaling of MySQL.
Contributions:49 pushes, 42 branches in 4 years 4 months
mysqlhorizontal-scalingsqlvitessclustering
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