B4A
b4a.co.jp
Actively hiring
Practice Management Software
EHR & Clinical Software
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Overview
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
How B4A hires
Truth index
D 45/100
Ghost roles
92%
Stale roles
0%
Reposted roles
0%
B4A scores D on the Alion truth index (A is best, E worst), measured over 12 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
B4A is a Japanese startup that develops a patented DX tool for self-pay clinics covering electronic medical records, booking, payments, CRM and management dashboards. It is used by more than 500 clinics after four years in business and has raised about 1 billion yen in funding. The company is headquartered in Tokyo, Japan.
Tech stack
Technologies named in job postings at B4A over the last 12 months, by layer, with the share of postings for each.
Technologies in use
19
Postings analysed
6
Stack modernity
77/100
Languages
Ruby
TypeScript
JavaScript
Frameworks & libraries
Jest
Next.js
RSpec
React.js
Databases
Amazon Aurora
PostgreSQL
Cloud & platforms
Figma
GitHub
AWS
AWS Fargate
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Full B4A tech stack
19 technologies · by team · pay by technology · changes · similar stacks
Growth
Hiring Momentum
21/100
Hiring freeze
Open positions
12
0 opened / 2 closed in 30 days
Median time-to-fill
219 days
faster than 8% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
0%
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.
Early Careers
100% ▲
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
2
Countries
1
Busiest office
Tokyo
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Headquarters
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Office with open vacancies
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Tokyo
Japan
HQ
11 open roles 1 posted in 90 days 55% engineering $697k Avg Salary
hires for DevOps, Backend, Early Careers
Kanazawa
Japan
1 open roles $379k Avg Salary
hires for Customer Success
Jobs
$456k – $1.1M per year • In office • Full-Time • Tokyo
GitHub
Design
Figma
Management
Slack
Jira
Google Workspace
Apply
$608k – $988k per year • In office • Full-Time • Tokyo
JavaScript
TypeScript
Ruby
Ruby on Rails
RSpec
Databases
PostgreSQL
Amazon Aurora
AI/ML
Copilot
Frontend
GraphQL
Next.js
React.js
DevOps
Terraform
GitHub Actions
AWS
AWS Fargate
SLI/SLO/SLA
GitHub
Design
Figma
Management
Slack
Jira
Google Workspace
QA
Jest
Apply
$380k – $608k per year • In office • Full-Time • Tokyo
JavaScript
TypeScript
Ruby
Ruby on Rails
RSpec
Databases
PostgreSQL
Amazon Aurora
AI/ML
Copilot
Frontend
GraphQL
Next.js
React.js
DevOps
Terraform
GitHub Actions
AWS
AWS Fargate
SLI/SLO/SLA
GitHub
Design
Figma
Management
Slack
Jira
Google Workspace
QA
Jest
Apply
$608k – $988k per year • In office • Full-Time • Tokyo
JavaScript
TypeScript
Ruby
Ruby on Rails
RSpec
Databases
PostgreSQL
Amazon Aurora
Frontend
GraphQL
Next.js
React.js
DevOps
Terraform
GitHub Actions
AWS
AWS Fargate
GitHub
Design
Figma
Management
Slack
Jira
Google Workspace
QA
Jest
Apply
$380k – $608k per year • In office • Full-Time • Tokyo
JavaScript
TypeScript
Ruby
Ruby on Rails
RSpec
Databases
PostgreSQL
Amazon Aurora
Frontend
GraphQL
Next.js
React.js
DevOps
Terraform
GitHub Actions
AWS
AWS Fargate
GitHub
Design
Figma
Management
Slack
Jira
Google Workspace
QA
Jest
Apply
$380k – $684k per year • In office • Full-Time • Tokyo
JavaScript
TypeScript
Ruby
Ruby on Rails
RSpec
Databases
PostgreSQL
Amazon Aurora
Frontend
GraphQL
Next.js
React.js
DevOps
Terraform
GitHub Actions
AWS
AWS Fargate
GitHub
Design
Figma
Management
Slack
Jira
Google Workspace
QA
Jest
Apply
Apply
$32k – $57k per year • In office • Full-Time • Tokyo
Windows
Cybersecurity
Microsoft Defender
Management
Slack
Google Workspace
Google Drive
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