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Knuddels Tech Stack

Germany's largest chat community platform with 100K+ daily active users

Technology, Information and Internet Karlsruhe, Baden-Württemberg 51–200 employees Founded 1999 Partnership

Knuddels operates a scaled chat platform across desktop and mobile, built on TypeScript/React frontend with Java/Spring Boot and Apache Cassandra backend. The stack reveals operational maturity: Prometheus/Grafana for observability, Kubernetes for orchestration, and n8n/Zapier for automation. Active projects around content moderation, recommendation engines, and predictive analytics—paired with recurring pain points around data reloads and retention—show a community business shifting toward data-driven personalization and moderation at scale.

Tech Stack 23 technologies

Core StackTypeScript React Svelte Java Figma Sketch Python pandas scikit-learn Mixpanel Kubernetes Prometheus Grafana n8n Zapier Capacitor Spring Boot Adobe XD SQL Excel Google Sheets Apache Cassandra Ubuntu

What Knuddels Is Building

◆Challenges

Nightly data reload
Stabile technische basis
Automatische inhaltsmoderation
Intelligente empfehlungen
High-volume event data
Improving community satisfaction
Intensifying member retention
Strategic realignment of data science
Increasing user acquisition
Improving retention

▲Active Projects

Desktop and mobile apps development
Platform core development
Nightly data reload improvement
New feature concept development
Automatische inhaltsmoderation
Intelligente empfehlungen
Wahlsystem für ehrenamtliche moderation
Predictive analytics model training
International distributed apache cassandra cluster maintenance
Cloud backup management

Hiring Activity

Steady15 roles · 5 in 30d

Department

Engineering

5

Product

5

Data

3

Ops

2

Seniority

Intern

6

Senior

5

Mid

4

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About Knuddels

Knuddels is Germany's largest chat community, operating since 1999 with over 100,000 daily active users and more than 1,000 active chat rooms. The platform functions as a social space where users connect, build friendships, and participate in community-driven moderation. Development is user-centric; the company actively involves users in product decisions. Headquartered in Karlsruhe, the organization spans 51–200 employees across engineering, product, data, and operations, with hiring concentrated in Germany.

HeadquartersKarlsruhe, Baden-Württemberg

Company Size51–200 employees

Founded1999

Hiring MarketsGermany

Frequently Asked Questions

What tech stack does Knuddels use?

Frontend: TypeScript, React, Svelte, Capacitor. Backend: Java, Spring Boot, Apache Cassandra. Infrastructure: Kubernetes, Prometheus, Grafana, Ubuntu. Data/analytics: Python, pandas, scikit-learn, Mixpanel. Design: Figma, Sketch, Adobe XD.

What is Knuddels working on?

Desktop and mobile app development, content moderation automation, recommendation engines, predictive analytics, and data infrastructure (Cassandra cluster maintenance, nightly data reloads, cloud backup). Also building voluntary moderator voting systems.

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