千

千株式会社 Tech Stack

School management and family photo platform for Japanese early childhood education

IT Services and IT Consulting 千代田区, 東京都 201–500 employees Founded 2004 Privately Held

千 operates a multi-product SaaS ecosystem serving Japanese kindergartens, preschools, and families through school photo services and educator management tools. The tech stack spans AWS, GCP, Azure, React, Vue, and PHP—a polyglot environment now actively migrating to containerized workloads (AWS ECS) and adding observability (OpenTelemetry, Elasticsearch). Active SLI/SLO implementation and re-architecture projects signal infrastructure-level scale challenges; simultaneous hiring across engineering, product, finance, and business divisions (mostly senior/director-level) reflects simultaneous product expansion and multi-unit consolidation.

Tech Stack 20 technologies

Core StackAWS React Vue PHP Go Java Google Analytics Tableau Slack GCP Azure AWS Organizations SQL Scrum Kanban Google Workspace

AdoptingRedis Elasticsearch OpenTelemetry AWS ECS

What 千株式会社 Is Building

◆Challenges

Reducing development toil
Improving development flow efficiency
New business launch
Accelerating new business growth
Cost management improvement
Security enhancement
Consolidation of multiple business units
Multi-business financial management
Existing business share expansion
Multiple business finance management

▲Active Projects

Sli/slo implementation
Observability implementation
Customer success structure build
Re-architecture and performance improvement
Ai tool adoption for finance
はいチーズ！フォト
はいチーズ！アルバム
はいチーズ！システム
Sales organization management
M&a integration

Hiring Activity

Accelerating20 roles · 15 in 30d

Department

Engineering

5

Finance

5

Product

5

Sales

3

Executive

2

Ops

2

Seniority

Senior

11

Manager

6

Director

2

Lead

2

Mid

1

Notable leadership hires: Tech Lead, Business Division Head, Finance and Accounting Director

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About 千株式会社

千 was founded in 2004 and has grown into a venture-backed platform company serving the Japanese early childhood education sector. The company operates multiple interconnected products: a school photo service (はいチーズ！フォト), a family photo album (はいチーズ！アルバム), and an operations management SaaS for educators (はいチーズ！システム). These products target both institutional (schools, preschools) and consumer (parents) segments. With 201–500 employees and active projects spanning new business launches, M&A integration, and financial consolidation across business units, the company is scaling beyond its original photo service into a broader education and childcare platform.

Headquarters千代田区, 東京都

Company Size201–500 employees

Founded2004

Hiring MarketsJapan

Frequently Asked Questions

What technology does 千 use?

Primary stack: AWS, GCP, Azure, React, Vue, PHP, Go, Java. Currently adopting AWS ECS, Redis, Elasticsearch, and OpenTelemetry for observability and containerization.

What is 千 working on?

Core projects: SLI/SLO and observability implementation, infrastructure re-architecture, AI tool adoption for finance, customer success structure, sales organization management, and M&A integration across multiple business units.