# DeltaStream

> DeltaStream is a Menlo Park-based company building a unified, serverless stream processing platform on top of Apache Flink. Founded in 2021 by Hojjat Jafarpour, the creator of ksqlDB, it lets teams build real-time streaming applications and pipelines using SQL - without wrestling with Flink's operational complexity. Its Fusion platform combines streaming, real-time, and batch analytics into a single serverless experience, integrating with Kafka, Kinesis, Snowflake, Databricks, and Apache Iceberg. The company has raised $25M total, backed by NEA, Galaxy Interactive, and Sanabil.

- **Founded:** 2021
- **Headquarters:** Menlo Park, California, United States
- **Founders:** Hojjat Jafarpour (Founder & CEO)
- **Team size:** ~15 employees
- **Products:** DeltaStream, DeltaStream Fusion
- **Notable:** Founded by Hojjat Jafarpour, creator of ksqlDB - the first database purpose-built for stream processing., Raised $25M total across seed and Series A from top-tier investors., Launched DeltaStream Fusion, positioned as the industry's first unified streaming + batch analytics platform.

## Products & services

- **DeltaStream** — A unified, serverless stream processing platform built on Apache Flink that lets users build real-time streaming applications, pipelines, and materialized views using SQL, with integrations for Apache Kafka, AWS Kinesis, Confluent Cloud, AWS MSK, Redpanda, and Pulsar.
- **DeltaStream Fusion** — A unified analytics platform that combines streaming, real-time, and batch processing into a single serverless experience. Orchestrates Apache Flink, Apache Spark, and ClickHouse, and integrates with Apache Iceberg and Snowflake for lakehouse use cases, with AI-assisted pipeline creation in SQL.

## Achievements

- Founded by Hojjat Jafarpour, creator of ksqlDB - the first database purpose-built for stream processing.
- Raised $25M total across seed and Series A from top-tier investors.
- Launched DeltaStream Fusion, positioned as the industry's first unified streaming + batch analytics platform.
- Expanded platform availability to both AWS and Microsoft Azure.
- Delivered real-time Apache Flink streaming embedded directly in the Databricks UI.

## Latest updates

- **2025-10** — DeltaStream announced the general availability of its next-generation Fusion platform for real-time analytics, now production-ready and available on Microsoft Azure.
- **2025-04** — DeltaStream introduced Fusion, the industry's first unified analytics platform to simplify streaming and batch data processing.
- **2024-09** — DeltaStream raised $15M Series A led by NEA with Galaxy Interactive and Sanabil, bringing total funding to $25M.

## Links

- Website: https://deltastream.io
- LinkedIn: https://www.linkedin.com/company/deltastream/
- Twitter/X: https://x.com/DeltaStreamInc
- YouTube: https://www.youtube.com/@DeltaStreamInc

---

Profile page: https://yespress.io/deltastream
Published by YesPress — https://yespress.io
Last updated: 2026-07-12