Olena Kutsenko

Senior Developer Advocate, Aiven

Based in Berlin, Germany

Olena is a seasoned expert in data, sustainable software development, and teamwork. With a background in software engineering, she's led teams and developed mission-critical applications at Nokia, HERE Technologies, and AWS. Currently, she works at Aiven where she supports developers and customers in using open-source data technologies such as Apache Kafka, ClickHouse, and OpenSearch. She is also an international public speaker and regularly presents at conferences around the world. She holds AWS Developer and Solutions Architect certifications, and is also a Confluent Catalyst.

Superpowers

NodeJS
JavaScript
TypeScript
Apache Kafka
ClickHouse
OpenSearch

Get your 30-day free trial

Thank you for visiting my page! Now that I have your attention, I'd love to offer you a free 30‑day trial and $300 in credit to explore our services. When the trial ends, you'll only pay for what you use. No hidden charges – just straightforward pricing. Have fun!

Get started for free

Learn more about Aiven Platform

Speaking activities

Upcoming

NDC Oslo 2024
Building a movie recommendation system with TensorFlow and pgvector
Come build a movie recommendation system from start to finish, utilizing NodeJS, TensorFlow, and PostgreSQL’s extension pgvector.
Jun 10, 2024 - Jun 14, 2024
07:00 - 16:00 UTC
Oslo, Norway
Attend

Past

Devoxx UK
Sentiment analytics in action: building your real-time pipeline
Together in this session we'll build a system using open source technologies Apache Kafka and Apache Flink with AI models to get real-time sentiment from social media data.
May 8, 2024 - May 10, 2024
Kafka Summit
Beginners guide to balance your data across Apache Kafka partitions
If you are new to Apache Kafka, or you're looking for good practices to design your partitions and avoid common pitfalls, you'll find this session useful!
May 2, 2024
Kafka Summit London 2024
Mastering Kafka consumer distribution: a guide to efficient scaling and resource optimization
For this session, Olena Kutsenko and Olena Babenko (Staff Engineer at Aiven) join forces.
Mar 19, 2024 - Mar 20, 2024
Kafka Summit London
Mastering Kafka consumer distribution: a guide to efficient scaling and resource optimization
For this session, Olena Kutsenko and Olena Babenko (Staff Engineer at Aiven) join forces.
Mar 19, 2024 - Mar 20, 2024
NDC London 2024
Building a movie recommendation system with Tensorflow and PGVector
Come build a movie recommendation system from start to finish, utilizing NodeJS, TensorFlow, and PostgreSQL’s extension PGVector.
Jan 29, 2024 - Feb 2, 2024
Singapore OSDI
Beginners guide to balance your data across Apache Kafka partitions
At the heart of Apache Kafka is a set of brokers that contain topics. Topics are split into partitions. If you're fresh to Apache Kafka, or looking for good practices to design your partitions and avoid common pitfalls, you'll find this session useful!
Nov 16, 2023
Devoxx Belgium
Beginners guide to balance your data across Apache Kafka partitions
If you are fresh to Apache Kafka, or you're looking for good practices to design your topic partitions and avoid common pitfalls, you'll find this session useful!
Watch the recording here if you missed the talk.
Oct 2, 2023 - Oct 6, 2023
Devoxx Ukraine
ClickHouse: what is behind the fastest columnar database
If your challenge is analysing terabytes of data - this talk is for you. If you're a data scientist looking for tools to work with big data - this talk is for you. And, of course, if you are just curious about what makes ClickHouse crazy fast - this talk is for you as well.
Sep 22, 2023
AWS Community Day
Using OpenSearch and Apache Kafka to explore Mastodon
This talk is for both beginners and intermediate users. We'll use some more advanced concepts and a bit of TypeScript code, but will keep it all simple, so that everyone can follow along and experiment with Mastodon data!
Sep 14, 2023
Javazone
ClickHouse: what is behind the fastest columnar database
If your challenge is analysing terabytes of data - this talk is for you. If you're a data scientist looking for tools to work with big data - this talk is for you. And, of course, if you are just curious about what makes ClickHouse crazy fast - this talk is for you as well. You can now watch it here.

Sep 6, 2023 - Sep 7, 2023
Berlin Buzzwords
ClickHouse: what is behind the fastest columnar database
Columnar databases seem to be full of mysteries and confusion. In this introduction for ClickHouse, we'll take apart its building blocks to see how it achieves its remarkable performance.
Jun 18, 2023 - Jun 20, 2023
JSNation
Apache Kafka simply explained with TypeScript examples
This session is for curious minds, who might have never worked with distributed streaming systems before, or are beginners to event streaming applications. Find the recording here.
Jun 1, 2023
OSDI Amsterdam
What is behind the fastest columnar database
Talk about ClickHouse.
- Link to slides
May 30, 2023
Kafka Summit London
The Dark and Dirty Side of Fixing Uneven Partitions
Talk with Olena Babenko, Staff Engineer at Aiven, on what to do when the data distribution across topic partitions is badly broken and as a result significantly hurts consuming applications performances, increasing lag and slowing data processing.
- Slides and recording
May 16, 2023 - May 17, 2023
Devoxx UK
Using Apache Kafka and OpenSearch to explore Mastodon
This talk is for both beginners in Apache Kafka and intermediate users. It talks about bringing data from Mastodon to Kafka using TypeScript and a couple of helpful libraries.
- Recording
May 10, 2023 - May 12, 2023
Uptime 2022
ClickHouse: what is behind the fastest columnar database. Or how to make it click!
Get the most of ClickHouse and avoid pitfalls. We talk about analytics, columnar databases and sparse indexing. We look at the most puzzling concepts of ClickHouse, so that by the end you find them not only logical, but maybe even fascinating.
- Recording
Sep 14, 2022 - Sep 15, 2022

Blogs by Olena Kutsenko

Oct 14, 2022
What is 'Current' with data streaming?
Current 2022 was this year's successor to the Kafka Summit series of conferences. Read on to find out what our Aiven colleagues thought of this new event (hint: it was very good!).
Francesco & Ben & Olena & Markos
Sep 14, 2022
What is ClickHouse®?
Big data can help you reach complex business decisions. Find out how ClickHouse is designed to get to the bottom of big data processes.
Olena
Jul 5, 2022
Apache Kafka® simply explained
Learning Apache Kafka doesn’t have to be difficult. Read on to get a friendly explanation of the Apache Kafka fundamentals.
Olena