# Sijie Guo

> Sijie Guo is the co-founder and CEO of StreamNative, a data streaming company founded in 2019. His career includes messaging infrastructure work at Yahoo and Twitter, co-creating DistributedLog and Twitter EventBus, and co-founding Streamlio. An Apache Pulsar PMC member and former Apache BookKeeper VP, he co-authored the Ursa paper that received the 2025 VLDB Best Industry Paper award. His recent work connects streaming, open storage formats, lakehouses, and AI agents.

- **Role:** Co-founder and CEO at StreamNative
- **Organizations:** StreamNative, Streamlio, Twitter, Yahoo, Apache Software Foundation
- **Education:** Bachelor’s degree in Computer Science, Huazhong University of Science and Technology, Master’s degree in Computer Science, Graduate University of Chinese Academy of Sciences
- **Known for:** Co-created DistributedLog and Twitter EventBus., Contributed to Apache Pulsar and Apache BookKeeper; served as BookKeeper project chair and VP before June 2023., Co-founded Streamlio and StreamNative.

## Career timeline

- **Before 2012** — Worked on Yahoo push notification infrastructure.
- **2012-2017** — Worked at Twitter; led messaging infrastructure and co-created DistributedLog and Twitter EventBus.
- **2017** — Co-founded Streamlio.
- **2019** — Founded StreamNative; Splunk acquired Streamlio that year.
- **2020** — StreamNative launched its cloud offering in the middle of the year.
- **2021** — StreamNative raised a $23.7 million Series A.
- **2023** — Stepped down as Apache BookKeeper VP/project chair in June; Enrico Olivelli succeeded him.
- **2025** — Co-authored the Ursa paper recognized as VLDB Best Industry Paper.
- **2026** — Co-announced open-source Ursa, UFK, and the Lakestream API and specification on September 23.

## Achievements

- Co-created DistributedLog and Twitter EventBus.
- Contributed to Apache Pulsar and Apache BookKeeper; served as BookKeeper project chair and VP before June 2023.
- Co-founded Streamlio and StreamNative.
- Co-authored “Ursa: A Lakehouse-Native Data Streaming Engine for Kafka,” winner of the 2025 VLDB Best Industry Paper award.

## Latest updates

- **2026-09** — Co-authored the announcement open-sourcing Ursa, Ursa for Apache Kafka, and the Lakestream API and specification under Apache 2.0.
- **2026-01** — Published StreamNative’s 2025 year in review, covering Ursa general availability, cloud expansion, and event-driven AI agents.
- **2025-09** — Co-authored the Ursa paper selected as VLDB 2025 Best Industry Paper and participated in the Data Streaming Summit San Francisco keynote.

## Links

- Website: https://streamnative.io/
- LinkedIn: https://www.linkedin.com/in/sijieg/
- Twitter/X: https://twitter.com/sijieg
- GitHub: https://github.com/sijie

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Profile page: https://yespress.io/sijie-guo
Published by YesPress — https://yespress.io
Last updated: 2026-10-22