Ernest Mishkin
Principal Engineer at Duckbill
San Rafael, California, United States
Summary
👤
Senior🎓
Top SchoolErnest Mishkin is a Principal Engineer with over 20 years of experience designing and operating high-volume, fault-tolerant systems from startup to enterprise scale. He was a founding engineer and principal architect at Returnly, building backend and data infrastructure that supported nearly $3B in instant credit and hundreds of millions of orders, and later led platform and data teams through acquisition at Affirm. Ernest blends hands-on systems engineering—JVM tuning, RDBMS performance, observability, and high-throughput data ingestion—with strong technical leadership, mentoring teams while codifying standards for security, governance, and reliability. He has a track record of architecting from scratch and surgically refactoring legacy systems to reduce downtime and legal risk while enabling new product opportunities. Comfortable as a “jack of all trades,” he often serves as the bridge between pods and specialized teams (SRE, Analytics, Data Science) to deliver pragmatic, beautiful solutions. Based in San Rafael, he pairs deep academic training in math and CS with a taste for solving technical mysteries and creating reusable frameworks that scale.
11 years of coding experience
25 years of employment as a software developer
Master of Science (MS) Mathematics and Computer Science, Master of Science (MS) Mathematics and Computer Science at Saint Petersburg State University239
English, Russian, Spanish
Stackoverflow
71reputation
2kreached
0answers
2questions
Github Skills (140)
jooq10
plsql10
code-generator10
wordpress10
logbook10
jpa10
server-side10
spring-boot-starter10
request-response10
sql-builder10
sql-parser10
system-testing10
logger10
sql-formatter10
ddl9
Programming languages (9)
Github contributions (5)
returnly/java-code-style
Jan 2018 - Apr 2021
Various settings responsible for enforcing common code standards for Java (and Kotlin)
Contributions:2 reviews, 6 PRs, 37 pushes in 3 years 3 months
standardskotlincode-standardsjavasettings
Glassdoor/planout4j
May 2016 - Nov 2017
Java port of Facebook's PlanOut A/B testing system with additional functionality
Contributions:11 commits, 28 PRs, 50 pushes in 1 year 6 months
a-b-testingtestingadditionalsystem-testingfacebook
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