Hojjat Jafarpour
Founder And CEO at DeltaStream, Inc.
Menlo Park, California, United States
Summary
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Rockstar🎓
Top SchoolHojjat Jafarpour is a founder and CEO based in Menlo Park with nine years of experience building and leading large-scale data systems and streaming platforms. He created KSQL at Confluent, contributing to the open-source stream SQL engine for Kafka and improving core features like INSERT INTO handling, schema validation, and error reporting. His background spans architecting petabyte-scale analytics (qSQL at Quantcast), Spark-based in-memory computation, and deep work on NoSQL and cloud-native databases across AWS and Hadoop ecosystems. He combines PhD-level research experience in data management and replication with hands-on engineering, shipping production-ready systems and open-source contributions. Notably, he pivots naturally between low-level database internals and product-facing streaming SQL, making complex distributed data problems accessible to users.
9 years of coding experience
9 years of employment as a software developer
University of California, Irvine
Stackoverflow
684reputation
36kreached
16answers
0questions
apache-kafka
top-5%
Github Skills (13)
javas10
java10
data-engineering10
ksqldb10
schema9
kafka9
apache-kafka9
avro8
iot6
spring-kafka6
confluent-platform6
groupby6
create-table6
Programming languages (2)
Github contributions (5)
confluentinc/ksql
Sep 2016 - Jul 2020
The database purpose-built for stream processing applications.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 581 commits, 333 PRs in 3 years 10 months
Contributions summary:Hojjat contributed to the KSQL database, focusing on features related to data processing. They modified code to configure the command topic's replication factor and validate with clause configuration variables. The user implemented and tested enhancements for the INSERT INTO command, ensuring schema correctness and validating sink topics. They also worked on improving error messages and handling of struct field references.
materialized-viewsstream-processingstreaming-queriesksqldbsql
Expertasif/ksql
Jan 2018 - Mar 2018
Contributions:51 commits in 1 month
apache-kafkaksqlstreaming-sqlsqlstreaming
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