Kartik Khare
Bengaluru, Karnataka, India
Summary
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RockstarKartik Khare is a software engineer with 12 years of experience building low-latency, highly distributed real-time systems that serve hundreds of millions of users, currently driving core features at StarTree and committing to Apache Pinot as an Apache committer. He has a strong track record implementing performance-sensitive features—such as off-heap upsert that scaled workloads 10x at half the cost—and building connectors like JDBC, S3, Kinesis, Pulsar, and Protobuf support for realtime OLAP systems. Previously he built real-time anomaly detection pipelines at Walmart Global Tech scaled to 20M RPM using Flink and Druid, and at Ola created a Scala DSL that shrank complex Flink development from months to days. An active open-source contributor to projects like Apache Pinot (and earlier work on Airflow and Superset), Kartik also writes technical essays with over 250K Medium reads, blending deep systems engineering with clear communication. Based in Bengaluru and an IIT Roorkee alumnus, he combines production-grade backend engineering with a knack for making complex streaming and analytics systems practical and cost-efficient.
12 years of coding experience
Github Skills (9)
javas10
apache-pinot10
kafka10
back-end-development10
protobuffer10
protobuf10
java10
jdbc9
schema8
Programming languages (10)
Github contributions (5)
apache/pinot
Apr 2020 - Jan 2023
Apache Pinot - A realtime distributed OLAP datastore
Role in this project:
Back-end Developer
Back-end DeveloperContributions:788 reviews, 105 commits, 388 PRs in 2 years 9 months
Contributions summary:Kartik primarily contributed to the development of the Apache Pinot project by adding support for new file system plugins such as S3 filesystem, protobuf input formats, and by refactoring and enhancing existing functionality. Their work includes implementing features, such as schema registry integration, and performance improvements. They also worked on integrating the JDBC driver, adding features such as primary key serialization and handling null values.
apache-pinotolapjava
startreedata/startree-tableau-connector
Mar 2024 - Sep 2025
Contributions:8 reviews, 28 PRs, 40 pushes in 1 year 6 months
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