**Start 2026 with the ClickHouse India community in Gurgaon!**

Connect with fellow data practitioners and hear from industry experts through engaging talks focused on lessons learned, best practices, and modern data challenges.

**Agenda:**

* 10:30 AM: Registration, light snacks & networking
* 11:00 AM: Welcome & Introductions
* 11:10 AM: **Inside ClickStack: Engineering Observability for Scale** by Rakesh Puttaswamy, Lead Solutions Architect @ ClickHouse
* 11:35 AM: **Supercharging Personalised Notifications At Jobhai With ClickHouse** by Sumit Kumar and Arvind Saini, Tech Leads @ Info Edge
* 12:00 PM: **Simplifying CDC: Migrating from Debezium to ClickPipes** by Abhash Solanki, DevOps Engineer @ Spyne AI
* 12:25 PM: **Solving Analytics at Scale: From CDC to Actionable Insights** by Kunal Sharma, Software Developer @ Samarth eGov
* 12:50 PM: **Q&A**
* 1:30 PM: Lunch & Networking

**👉🏼 RSVP to secure your spot!**

Interested in speaking at this meetup or future ClickHouse events? 🎤Shoot an email to [cheryl.tuquib@clickhouse.com](mailto:cheryl.tuquib@clickhouse.com) and she'll be in touch.

\*\*\*\*\*\*\*\*
🎤 **Session Details: Inside ClickStack: Engineering Observability for Scale**
Dive deep into ClickStack, ClickHouse’s fresh approach to observability built for engineers who care about speed, scale, and simplicity. We’ll unpack the technical architecture behind how ClickStack handles metrics, logs, and traces using ClickHouse as the backbone for real-time, high-cardinality analytics. Expect a hands-on look at ingestion pipelines, schema design patterns, query optimization, and the integrations that make ClickStack tick.

**Speaker: Rakesh Puttaswamy, Lead Solutions Architect @ ClickHouse**

🎤 **Session Details: Supercharging Personalised Notifications At Jobhai With ClickHouse**
Calculating personalized alerts for 2 million users is a data-heavy challenge that requires more than just standard indexing. This talk explores how Jobhai uses ClickHouse to power its morning notification pipeline, focusing on the architectural shifts and query optimizations that made our massive scale manageable and fast.

**Speaker: Sumit Kumar and Arvind Saini, Tech Leads @ Info Edge**
Sumit is a seasoned software engineer with deep expertise in databases, backend systems, and machine learning. For over six years, he has led the Jobhai engineering team, driving continuous improvements across their database infrastructure and user-facing systems while streamlining workflows through ongoing innovation. Connect with [Sumit Kumar on LinkedIn](https://www.linkedin.com/in/sumit-kumar-121a2695/).

Arvind is a Tech Lead at Info Edge India Ltd with experience building and scaling backend systems for large consumer and enterprise platforms. Over the years, they have worked across system design, backend optimization, and data-driven services, contributing to initiatives such as notification platforms, workflow automation, and product revamps. Their work focuses on improving reliability, performance, and scalability of distributed systems, and they enjoy solving complex engineering problems while mentoring teams and driving technical excellence.

🎤 **Session Details: Simplifying CDC: Migrating from Debezium to ClickPipes**
In this talk, Abhash will share their engineering team's journey migrating our core MySQL and MongoDB CDC flows to ClickPipes. We will contrast our previous architecture—where every schema change required manual intervention or complex Debezium configurations—with the new reality of ClickPipes' automated schema evolution, which seamlessly handles upstream schema changes and ingests flexible data without breaking pipelines.

**Speaker: Abhash Solanki, DevOps Engineer @ Spyne AI**
Abhash serves as a DevOps Engineer at Spyne, orchestrating the AWS infrastructure behind the company's data warehouse and CDC pipelines. Having managed complex self-hosted Debezium and Kafka clusters, he understands the operational overhead of running stateful data stacks in the cloud. He recently led the architectural shift to ClickHouse Cloud, focusing on eliminating engineering toil and automating schema evolution handling.

🎤 **Session Details: Solving Analytics at Scale: From CDC to Actionable Insights**
As SAMARTH’s data volumes grew rapidly, our analytics systems faced challenges with frequent data changes and near real-time reporting. These challenges were compounded by the platform’s inherently high cardinality in multidimensional data models - spanning institutions, programmes, states, categories, workflow stages, and time, resulting in highly complex and dynamic query patterns.

This talk describes how we evolved from basic CDC pipelines to a fast, reliable, and scalable near real-time analytics platform using ClickHouse. We share key design and operational learnings that enabled us to process continuous high-volume transactional data and deliver low-latency analytics for operational monitoring and policy-level decision-making.

**Speaker: Kunal Sharma, Software Developer @ Samarth eGov**
Kunal Sharma is a data-focused professional with experience in building scalable data pipelines. His work includes designing and implementing robust ETL/ELT workflows, data-driven decision engines, and large-scale analytics platforms. At SAMARTH, he has contributed to building near real-time analytics systems, including the implementation of ClickHouse for large-scale, low-latency analytics.

ClickHouse Delhi User Group

ClickHouse

ankit kohli

Vishnu Pandey

Gautam Kumar

Ashish Srivastava

Ankit Singhal

Tanuj Kohli

Priyank Kumar

abhishekbanerjee

Vinay Kondabathula

SAURABH SHARMA

Nishant Bangarwa

Tanmay Mohan

Ankit Kumar

Rohit Jain

Pankaj Kishor

Varun Sinha

khushibibiyan37

Adarsh Tripathi

Aryan Rai

ClickHouse Gurgaon/Delhi Meetup

Awfis Space Solutions @ Ambience Mall

## Details

**Location: Qonto's office, 18 rue de Navarin, 75009 Paris**

**Agenda:**
**18:40 - Doors Open & Networking & Snacks**
**19.00 - 19.05 - Intro by Qonto**
**19.05 - 19:15 - Intro by ClickHouse**
**19.15 - 19:35 - Session n°1 - Feedback session Qonto**
Javier Ortiz, Staff SRE Observability
**19.40 - 20:00 - Session n°2 - Feedback session Brevo**
Alexandre Debril, Staff Engineer
**20:05 - 21:00 - Food & Conversation**

ClickHouse France User Group

Valentin Chanmala

arnaud

Teva Riou

Julien

Chitra Birole

Aziz IMGHARNE

Paul ARGUILLÈRE

Benoit DELORME

Claire

Pascal

wxll

mathieu.andrei

Josselin Mahe

Adrien de Castelnau

Stéphane Renou

Olivier

Guillaume Nocent

ZORO

Xavier Thoraval

ClickHouse Meetup @ Qonto

WeWork 18 Rue De Navarin

### 카카오와 한국 데이터 엔지니어링 그룹과의 파트너십으로, 네트워킹 기회와 전문가 주도의 발표, 그리고 모범 사례에 대한 인사이트를 제공하는 서울 두 번째 밋업을 개최하게 되어 매우 기쁩니다.

**🗓️ Agenda (행사 일정)**

* 7:00 PM: 등록, 저녁 식사 및 네트워킹
* 7:30 PM: 환영 인사 및 소개
* 7:40 PM: **Observability를 위한 ClickHouse 에이전틱 AI와 벡터 검색**
발표자: Ken Lee / 이기훈, Solution Architect / 이사 @ ClickHouse
* 8:00 PM: **ClickHouse 활용 최적화 여정**
발표자: 최영록, Kakao 데이터 엔지니어
* 8:20 PM: **5년의 고민, 5일의 구현: LLM과 함께한 데엔의 행복한 서비스 개발기**
발표자: 박장호, Data Engineering Group
* 8:40 PM: 네트워킹
* 9:00 PM: 마무리

**👉🏼 지금 RSVP하고 자리를 확보하세요!**
**__________________________________________________**

**세션 안내**
**🎤 관측성을 위한 ClickHouse 에이전틱 AI와 벡터 검색**
이 발표에서는 ClickHouse의 Vector Search와 Agentic AI를 활용해 Observability 데이터를 더 똑똑하게 탐색하는 방법을 소개합니다.

* 유사 에러 로그 검색: Vector Index(usearch)로 "이 에러와 비슷한 과거 로그" 즉시 탐색
* 이상 트레이스 탐지: Embedding 기반 정상/비정상 패턴 분류
* Agentic 워크플로우: MCP를 통해 AI가 직접 ClickHouse를 쿼리하며 근본 원인 분석

본 발표는 ClickHouse 오픈소스로 구현 가능한 기술스택으로 구성하며, ClickHouse Cloud를 통한 라이브 데모로 실제 동작을 확인합니다.

**발표자: Ken Lee / 이기훈, Solution Architect / 이사 @ ClickHouse**

**🎤 ClickHouse for o11y at Kakao — “Under the Hood”**: What Worked, What Failed, and What We Learned
Kakao Observability 전환 과정에서 ClickHouse를 핵심 스토리지로 도입하며 많은 시행착오를 겪었습니다.
이 발표에서는 ClickHouse를 Observability Storage로 실제 운영하면서 무엇이 잘 작동했는지, 무엇이 실패했는지, 그리고 그 과정에서 얻은 실무적인 교훈을 공유합니다.
이상적인 아키텍처보다, 현실적인 선택과 판단의 기록을 중심으로 이야기합니다.

**발표자: 최영록, Kakao 데이터 엔지니어**

**🎤 5년의 고민, 5일의 구현: LLM과 함께한 데엔의 행복한 서비스 개발기**
수년간 고민해 온 서비스 아이디어를 LLM의 도움으로 단 5일 만에 구현한 경험을 공유합니다. 이 발표에서는 LLM을 활용한 실제 개발 과정과 생산성 향상, 그리고 데이터 엔지니어로서 체감한 변화와 인사이트를 이야기합니다.

**발표자: 박장호, Data Engineering Group**

\*\*\*
We’re excited to host our second meetup in Seoul, featuring networking opportunities, expert-led talks, and insights into best practices, in partnership with Kakao and the Korean Data Engineering Group.

**Agenda**

* 7:00 PM: Registration, dinner & networking
* 7:30 PM: Welcome and Introductions
* 7:40 PM: **ClickHouse Agentic AI & Vector Search in Observability** by Ken Lee, Solution Architect @ ClickHouse
* 8:00 PM: **ClickHouse for o11y at Kakao — “Under the Hood”**: What Worked, What Failed, and What We Learned by Mark Choi, Data Engineer @ Kakao
* 8:20 PM: **Five Years of Planning, Five Days to Build: A Data Engineer’s Service Development Journey with LLMs** by Jangho Park @ Data Engineering Group
* 8:40 PM: Networking
* 9:00 PM: Wrap-up

**👉🏼 RSVP to secure your spot!**
**______________________________________________**

**🎤 ClickHouse Agentic AI & Vector Search in Observability**
This talk introduces smarter ways to explore Observability data using ClickHouse Vector Search and Agentic AI.

* Similar Error Log Search: Instantly find "logs similar to this error" with Vector Index (usearch)
* Anomalous Trace Detection: Classify normal vs abnormal patterns using embeddings
* Agentic Workflow: AI queries ClickHouse directly via MCP for automated root cause analysis

This presentation is built on a tech stack that can be implemented with ClickHouse open source, with a live demo on ClickHouse Cloud to demonstrate it in action.

**Speaker: Ken Lee, Solution Architect @ ClickHouse**

**🎤 ClickHouse for o11y at Kakao — “Under the Hood”**: What Worked, What Failed, and What We Learned
During Kakao’s transition to Observability, Mark's team introduced ClickHouse as the core storage and learned through extensive trial and error. This talk shares what worked, what didn’t, and the practical lessons learned from running ClickHouse for observability, focusing on real-world decisions rather than idealized architectures.

**Speaker name: Mark Choi, Data Engineer @ Kakao**

**🎤 Five Years of Planning, Five Days to Build: A Data Engineer’s Service Development Journey with LLMs**
This talk shares the experience of turning a service idea refined over five years into a working implementation in just five days with the help of LLMs. It covers the real-world development process, productivity gains, and key insights from a data engineer’s perspective.

**Speaker name:** **Jangho Park @ Data Engineering Group**

ClickHouse Seoul User Group 클릭하우스 사용자 그룹

신성수

seokjin

Jihoon Lee

Kyungjun Lee

Dahye Lee

이일우

Junsu Lee

Antoine Grondin

LEO(김두진)

Yong Jin Kim

Lee, Sang Hyun

윤명식

LEE IL CHOL

Shin, Hyeon Kwang

황이

ojhgold

llllssss94

권도용

ClickHouse + Kakao Seoul 조인트 밋업!

한국컨퍼런스센터(COCOC)

Hey there, data enthusiasts and ClickHouse aficionados! We've got some exciting news to share - our next meetup is on the horizon, and it's going to be in Barcelona!

Get ready for a delightful mix of mind-boggling data tales, insightful conversations, and maybe even a surprise or two up our sleeves.

But here's the deal: to secure your spot, make sure you register ASAP!

**Location:** TBA

**Agenda:**
6:00 - 6:30 - Arrival and Check-in
6:30 - 6:50 - **TBA**
6:50 - 7:10 - **TBA**
7:10 - 7:30 - **TBA**
7:30 - 8:30 - Food, Drinks, and Conversation.

If you are interested in speaking at, or hosting, this or a future meetup please email us - tyler@clickhouse.com

ClickHouse Barcelona User Group

Adrián Pastén

Florent Micand

carlosjoseroman

Xavier Janer

Francesco Avitto

jesus

Gleb Gorchannikov

Lars

ClickHouse Barcelona Meetup

Hey there, data enthusiasts and ClickHouse aficionados! We've got some exciting news to share - our next meetup is on the horizon, and it's going to be in Madrid!

Get ready for a delightful mix of mind-boggling data tales, insightful conversations, and maybe even a surprise or two up our sleeves.

But here's the deal: to secure your spot, make sure you register ASAP!

**Location:** TBA

**Agenda:**
6:00 - 6:30 - Arrival and Check-in
6:30 - 6:50 - **TBA**
6:50 - 7:10 - **TBA**
7:10 - 7:30 - **TBA**
7:30 - 8:30 - Food, Drinks, and Conversation.

If you are interested in speaking at, or hosting, this or a future meetup please email us - [tyler@clickhouse.com](mailto:tyler@clickhouse.com)

ClickHouse Madrid User Group

Roberto Carlos Saavedra Baylón

Marcos

Guillermo "Wilson" Ovejero

Jesús Alberto Polo García

RUBEN DIAZ PLATERO

Peter

ClickHouse Madrid Meetup

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We’re delighted to have you join the ClickHouse and friends global community! This is a meetup for everybody who is interested in ClickHouse, from a technology and use case perspective.

We welcome all to learn, collaborate, and share experiences!

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