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Cybozu, Inc. Tech Stack

Cloud groupware platform for collaborative workspaces, built on Kubernetes infrastructure

IT Services and IT Consulting 東京都中央区, 東京 501–1,000 employees Founded 1997 Public Company

Cybozu develops Kintone, a cloud-based groupware platform that generates the majority of company revenue and operates at scale across tens of thousands of customers globally. The tech stack reveals infrastructure maturity: Kubernetes, MySQL, Elasticsearch, Kafka, and Hadoop underpin a distributed system, while active migration projects (neco platform, Kubernetes CSI plugins, forest-to-neco transition) and storage optimization work indicate scaling pressure as user volume grows. Engineering dominance in hiring (35 roles) paired with dedicated security and product teams reflects a company transitioning from regional product to globally distributed infrastructure.

Tech Stack 34 technologies

Core StackKubernetes Go Linux MySQL Elasticsearch Nginx GitHub Actions Kafka Hadoop Java Ansible Swift SwiftUI Kotlin Jetpack Compose Cilium Argo CD Teleport KVM QEMU LVM iSCSI keepalived InnoDB kintone Ceph Rook iOS Swift Concurrency Android+3 more

AdoptingKubernetes MySQL

ReplacingKubernetes React KVM QEMU

What Cybozu, Inc. Is Building

◆Challenges

Global product security strengthening
Migrating legacy infrastructure to kubernetes
Low-cost scalable high-performance storage
Optimizing cloud platform
Scaling performance for growing users
Scaling platform for increasing traffic
Legacy front-end framework replacement
Scaling to handle increased users
Product incident handling
Low management cost storage

▲Active Projects

Product security strengthening for global expansion
Threat modeling risk analysis
Secure development support and education
Neco project kubernetes migration
Kubernetes csi plugin development
Generative ai feature development
Migration from forest to neco
Kubernetes cluster runtime build
Cloud platform performance optimization
Migration to kubernetes-based neco platform

Hiring Activity

Steady55 roles · 25 in 30d

Department

Engineering

35

Data

6

Security

6

Product

2

Legal

1

Ops

1

Support

1

Seniority

Mid

28

Senior

18

Junior

3

Manager

3

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About Cybozu, Inc.

Cybozu, founded in 1997 and headquartered in Tokyo, is a public company operating in the cloud collaboration software space. Kintone, launched in 2011, serves as the core product—a cloud groupware platform adopted across diverse industries and company sizes worldwide. The engineering organization spans backend infrastructure, mobile platforms (iOS, Android), and platform reliability. Active focus areas include product security hardening for global expansion, Kubernetes-based infrastructure modernization, and cloud platform performance optimization to support rising user demand and traffic.

Headquarters東京都中央区, 東京

Company Size501–1,000 employees

Founded1997

Hiring MarketsJapan

Frequently Asked Questions

What tech stack does Cybozu use?

Cybozu's infrastructure runs Kubernetes, MySQL, Elasticsearch, Nginx, Kafka, and Hadoop. Mobile clients use Swift (iOS) and Kotlin (Android) with modern UI frameworks. Development relies on Go, Java, GitHub Actions, and Ansible for automation.

What is Cybozu working on?

Major projects include Kubernetes platform migration (neco), CSI plugin development, generative AI feature work, legacy frontend replacement, and cloud performance optimization. Security strengthening for global expansion and low-cost scalable storage are active pain points.