Stmn
stmn.co.jp
Actively hiring
HR & Payroll Software
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News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
How Stmn hires
Truth index
D 45/100
Ghost roles
92%
Stale roles
0%
Reposted roles
0%
Stmn scores D on the Alion truth index (A is best, E worst), measured over 13 open roles re-checked against its own hiring board: 92% look like ghost listings, 0% have gone stale and 0% are the same role posted again. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Overview
Stmn is a Tokyo software company founded in 2016 that develops TUNAG, an internal engagement platform for companies with frontline workforces. It combines internal social feeds, recognition programmes and company information in one application for staff without desks. The company serves retail, hospitality and manufacturing employers across Japan.
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Tech stack
Technologies named in job postings at Stmn over the last 12 months, by layer, with the share of postings for each.
Technologies in use
35
Postings analysed
6
Stack modernity
91/100AI adopter
Languages
Kotlin
Ruby
TypeScript
JavaScript
Frameworks & libraries
Next.js
Playwright
React.js
Ruby on Rails
Databases
Amazon Aurora
ElasticSearch
Firestore
MySQL
Cloud & platforms
AWS
Datadog
GCP
Twilio
AI & ML
Claude
ChatGPT
LLM
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Full Stmn tech stack
35 technologies · by team · pay by technology · changes · similar stacks
Growth
Hiring Momentum
52/100
Stable
Open positions
13
0 opened / 4 closed in 30 days
Median time-to-fill
121 days
faster than 12% of the market
ATS activity
Every ~4 hours
10/16/2026
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Management
100% ▼
Activity Timeline
Added Figma to stack
Sep 2026
Added ChatGPT to stack
Sep 2026
Added Linux to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
3
Hiring now
3
Countries
1
Busiest office
Tokyo
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Headquarters
Builds here
Office with open vacancies
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Tokyo
Japan
HQ
6 open roles 1 posted in 90 days 17% engineering $746k Avg Salary
hires for Customer Success, DevOps, Design
Nagoya
Japan
Sales office
5 open roles 20% engineering $713k Avg Salary
hires for Customer Success, Backend, Early Careers
Chiyoda
Japan
2 open roles 50% engineering
hires for Backend, Solutions
Jobs
In office • Full-Time • Nagoya
JavaScript
Kotlin
TypeScript
Ruby
Ruby on Rails
Databases
MySQL
PostgreSQL
Redis
Firestore
ElasticSearch
Amazon Aurora
AI/ML
Copilot
Claude Code
Frontend
Next.js
React.js
Mobile
Twilio
DevOps
GCP
GitHub Actions
CloudFormation
Datadog
CI/CD
AWS
Docker
Linux
Management
Slack
QA
Playwright
Apply
≈ $35k – $97k per year (Estimated) • In office • Full-Time • Tokyo
JavaScript
Kotlin
TypeScript
Ruby
Ruby on Rails
Databases
MySQL
PostgreSQL
Redis
Firestore
ElasticSearch
Amazon Aurora
AI/ML
Copilot
Claude Code
Devin
Frontend
Next.js
React.js
Mobile
Twilio
DevOps
GCP
CloudFormation
Datadog
CI/CD
AWS
Docker
GitHub
Management
Slack
QA
Playwright
Apply
In office • Full-Time • Chiyoda
JavaScript
Kotlin
TypeScript
Ruby
Ruby on Rails
Databases
MySQL
PostgreSQL
Redis
Firestore
ElasticSearch
Amazon Aurora
AI/ML
Copilot
Claude Code
Devin
Frontend
Next.js
React.js
Storybook
SWR
Mobile
Twilio
DevOps
GCP
CircleCI
CloudFormation
Datadog
CI/CD
AWS
Docker
Linux
Management
Slack
QA
Playwright
Apply
$551k – $918k per year • In office • Full-Time • Tokyo
Claude
ChatGPT
DevOps
GitHub
Design
Figma
Management
Slack
Apply
Apply