Confluent Developer ft. Tim Berglund, Adi Polak & Viktor Gamov

Confluent

Data Streaming

Confluent

Kafka

Java

Apache Kafka

Kafka Streams

Mike Agnich

Apache Flink

Artificial Intelligence

Software Development

Product Management

Warpstream

Parquet

Startup Experiences

Kafka Connect

Microservices

Postgres

Encryption

Credit Card Security

AI In Engineering

Hi, we’re Tim Berglund, Adi Polak, and Viktor Gamov and we’re excited to bring you the Confluent Developer podcast (formerly “Streaming Audio.”) Our hand-crafted weekly episodes feature in-depth interviews with our community of software developers (actual human beings - not AI) talking about some of the most interesting challenges they’ve faced in their careers. We aim to explore the conditions th... more

149 ratings

Publishes	Weekly	Episodes	299	Founded	8 years ago
Number of Listeners		Categories	How ToEducationTechnology

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Latest Episodes

155 Contributors Later: Where Kafka Is Headed ft. Andrew Schofield | Ep. 34

Tim Berglund talks to Andrew Schofield (Confluent) about his career in Apache Kafka. Andrew’s first job: working on queuing systems in 1991. His challenge: working at Confluent and in the Kafka community to bring queue semantics into Kafka while also... more

22 Jun 2026 • 31 min • Most popular

Agent Mesh: A Microservice With a Brain ft John Miller & Eric Broda | Ep. 33

Tim Berglund talks to John Miller (Enid Technologies) and Eric Broda (Agentic Mesh Company) about their work on agent mesh and enterprise agents. Their challenge: rethinking agents as enterprise-grade participants in business processes.

SEASON 2

Ho... more

11 Jun 2026 • 32 min

10 Years of Kafka Streams with Matthias J. Sax | Ep. 32

Tim Berglund talks to Matthias J. Sax (Confluent) about 10 whole years of Kafka Streams! Matthias’ first job: electrician-in-training on BMW’s assembly lines. His challenge: reflecting on 10 years of Kafka Streams growth, major milestones, and what c... more

8 Jun 2026 • 29 min

Gunnar Morling Built a New Parquet Engine with AI | Ep. 31

Tim Berglund talks to Gunnar Morling (Confluent) about his career in open source Java and data infrastructure. Gunnar’s first job: a student PHP developer in AMD’s e-learning group. His challenge: building Hardwood, a fast, multi-threaded Parquet eng... more

1 Jun 2026 • 42 min

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Recent Guests

Andrew Schofield

Principal engineer at Confluent; Kafka committer and PMC member

Confluent

Episode: 155 Contributors Later: Where Kafka Is Headed ft. Andrew Schofield | Ep. 34

John Miller

Co-founder of Enid Technologies; AI systems builder and data architect

Enid Technologies

Episode: Agent Mesh: A Microservice With a Brain ft John Miller & Eric Broda | Ep. 33

Eric Broda

Technology executive; author on service mesh, data mesh, and agents

Independent/Partnered with Enid Technologies

Episode: Agent Mesh: A Microservice With a Brain ft John Miller & Eric Broda | Ep. 33

Matthias Sax

Key contributor to Kafka Streams, discussed as guest

Kafka Streams community / Confluent contributor

Episode: 10 Years of Kafka Streams with Matthias J. Sax | Ep. 32

Gunnar Morling

Open-source developer and project lead; creator of Hardwood parquet parser

Independent / Confluent contributor

Episode: Gunnar Morling Built a New Parquet Engine with AI | Ep. 31

Russell Spitzer

Principal Software Engineer at Snowflake

Snowflake

Episode: How AI Is Changing Apache Iceberg with Russell Spitzer | Ep. 30

Caleb Grillo

Staff product manager for Confluent WarpStream

Confluent WarpStream

Episode: Being Wrong in the Right Direction with Caleb Grillo | Ep. 29

Mateo Rojas

Kafka veteran discussing early days and architecture

LittleHorse

Episode: Building Banking Systems with Kafka Streams with Mateo Rojas | Ep. 28

Joseph Morais

Technical champion at Confluent

Confluent

Episode: The AI Impact on the Developer Future with Joseph Morais | Ep. 27

Hosts

Tim Berglund

Host of Confluent Developer; long-time software engineer and open-source contributor

Adi Polak

Host of Confluent Developer podcast; focuses on data streaming and developer tooling

Viktor Gamov

Host focusing on Kafka, data streaming, and developer-focused content

Reviews

4.9 out of 5 stars from 149 ratings

Best podcast
This is a must listen for me while working out and a go to for informal technical chat and knowledge sharing
Apple Podcasts
5
akideepi
India4 years ago
Grate!
Podcast Addict
5
Przemek
6 years ago
A class
Tim is probably the best tech speaker I have ever listened. Please keep doing them.
Apple Podcasts
5
Srikars
United States6 years ago
Kafka on Kubernetes discussion
The last 5 mins was gold. Sets the standard for where we need to be vs where we are. Very informative.
Apple Podcasts
5
Mr Gripps
Australia6 years ago
Can’t stop listening.
This podcast is so good that I started at episode 1 and am going through them all. It’s amazing how well these complex topics are explained via audio.
Apple Podcasts
5
AllTheNickNamesAreTaken1984
United States7 years ago

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Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Short, focused episodes deliver high-quality technical discussions.

The host makes complex topics approachable and actionable.

Listeners praise practical insights into Kafka and data streaming.

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Talking Points

Recent interactions between the hosts and their guests.

10 Years of Kafka Streams with Matthias J. Sax | Ep. 32

Q: Can you summarize the major milestones in the development of Kafka Streams over the last decade?

The pivotal milestones include the initial production-readiness of Kafka Streams, the introduction of exactly-once processing, the development and maturation of the topology test driver, and the evolution of rebalance and warm-up mechanisms to enable zero-downtime state migrations, complemented by significant broker integration and community-driven features like header stores and collaboration with Michelin.

Gunnar Morling Built a New Parquet Engine with AI | Ep. 31

Q: What is your stance on using AI to write code and tests for this project?

95% of code is AI-generated, but all outputs are reviewed by humans to ensure correctness, with tests largely written by Claude and a strong emphasis on using existing Parquet test suites to verify compatibility and behavior.

Gunnar Morling Built a New Parquet Engine with AI | Ep. 31

Q: How do you approach parallelism beyond one thread per column?

Initial column-level parallelism was too coarse; the team moved to a page-level distribution within columns, assigning threads to pages so that slow pages don't bottleneck faster ones, enabling better utilization of multi-core CPUs.

Gunnar Morling Built a New Parquet Engine with AI | Ep. 31

Q: Why did you decide to build a new Parquet parser instead of improving the existing Parquet Java library?

The existing Parquet Java library pulls in the Hadoop stack and carries a heavy dependency footprint, plus it is single-threaded; Hardwood aims to be zero-dependency where possible, use multi-core parallelism, and explore LM-assisted development to see if those tools can be fit for purpose for this low-level codebase.

Being Wrong in the Right Direction with Caleb Grillo | Ep. 29

Q: Tell us about yourself and your path to WarpStream and Confluent.

Caleb recounts his background from NGO work to product management, migration to Confluent in 2019, and the move to WarpStream in 2023 before rejoining Confluent, emphasizing cross-functional collaboration and a hunger for ambitious projects.

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Frequently Asked Questions About This Podcast

What is This Podcast about and what kind of topics does it cover?

The show consistently centers on real-world data streaming challenges, practical tooling, and the intersections of AI with software engineering. Episodes surface deep dives into Parquet, Iceberg, Kafka, Flink, and platform design, often featuring practitioners from Confluent, Snowflake, and partner ecosystems. A notable strength is translating dense technical topics into accessible discussions, with a balance of architectural tradeoffs, open-source governance, and product strategy that helps listeners understand when and how to apply these technologies in production.

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These podcasts share a similar audience with this podcast:

1. Thoughtworks Technology Podcast
2. Software Engineering Daily
3. Software Engineering Radio - the podcast for professional software developers
4. The Pragmatic Engineer
5. The Stack Overflow Podcast

How many episodes of this podcast are there?

this podcast launched 8 years ago and published 299 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on this podcast?

Recent guests on this podcast include:

1. Andrew Schofield
2. John Miller
3. Eric Broda
4. Matthias Sax
5. Gunnar Morling
6. Russell Spitzer
7. Caleb Grillo
8. Mateo Rojas

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