Vadim Korolik
Staff Engineer, Manager at LaunchDarkly
Chicago, Illinois, United States
Summary
🤩
Rockstar🎓
Top SchoolVadim Korolik is a results-driven staff engineer and manager based in Chicago with a rare combination of founding-stage CTO experience and hands-on platform engineering across observability and storage systems. He co-founded and scaled Highlight into an open-source full-stack monitoring platform that ingests terabytes daily, architecting its Kafka/S3/ClickHouse data plane, OpenTelemetry ingest, LLM-powered similarity grouping, SDK ecosystem, and self-hosted billing. Now leading observability engineering at LaunchDarkly, he continues to ship backend improvements—recently enhancing billing, Stripe integration, and metrics performance in Highlight’s popular open-source repo. His prior work at Pure Storage delivered developer productivity tools that cut test time by up to 90% and introduced production web apps and APIs used company-wide. Comfortable shifting between high-level architecture and low-level implementation, he blends startup grit with enterprise-grade delivery and a proven track record of scaling teams and ARR.
52 years of coding experience
6 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at University of Southern CaliforniaCollege Preparatory High School, College Preparatory High School at Archbishop Mitty High School
Github Skills (9)
go10
back-end-development10
stripe-api10
clickhouse9
billing-system9
graphql8
wpgraphql8
wordpress-graphql8
postgresql7
Programming languages (8)
Github contributions (5)
highlight/highlight
Mar 2022 - Mar 2023
highlight.io: The open source, full-stack monitoring platform. Error monitoring, session replay, logging, distributed tracing, and more.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:43 releases, 2063 reviews, 876 commits in 1 year
Contributions summary:Vadim focused on enhancing the billing system and fixing an issue in a cloud-based monitoring platform. They implemented updates to the Stripe client using the upcoming invoice items API and performed several bug fixes for the graduated pricing invoice and its metadata lookup. They also made code changes to enhance the performance for metrics. The changes involved modifying backend files and updating the dependencies for a self hosted deployment.
monitorhighlightfull-stackdockergrafana
Vadman97/PicoSim
Feb 2017 - Apr 2017
Contributions:31 commits, 16 pushes, 1 branch in 1 month
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