Craif
craif.com
Actively hiring
Molecular Diagnostics
Diagnostic Tests & IVD
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$1.1B
4 rounds on record
Latest round
$33M
Venture round · Aug 2026 · 2 mo ago
Hiring now
12
open roles
Backers
3
Plug and Play, Daiwa Corporate Investment
The money's age
Fresh money
2 months since the last round · hiring slowed
Momentum
35/100
in the news, fresh money
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Aug 18
Raised a round Venture round $33M
Apr 28, 2025
Raised a round Venture round $22M · TechCrunch
Dec 25, 2024
Raised a round Venture round $1B · BRIDGE
Oct 27, 2021
Raised a round Venture round $11.3M · SEC Form D
2018
Founded
Tractionpublic signals, read monthly
Web presence
top 6%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Aug 2026 | $33M | — | menafn.com |
| Venture round | Apr 2025 | $22M | — | TechCrunch |
| Venture round | Dec 2024 | $1B | — | BRIDGE |
| Venture round | Oct 2021 | $11.3M | — | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Ryuichi OnoseExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
Plug and Play 
Daiwa Corporate Investment 
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How Craif hires
Truth index
D 45/100
Ghost roles
92%
Stale roles
0%
Reposted roles
0%
Craif 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
Craif is a Tokyo biotechnology company founded in 2018 that detects cancer risk from urine samples. Its technology analyses microRNA using a device developed at Nagoya University, which makes screening far less invasive than blood testing. The company sells tests in Japan and is pursuing approval in other markets.
News
Craif Raises $33M to Accelerate Introduction of Its Urine-Based Cancer Test to the U.S.
Series D, Co-led by Granite-Integral and Diagnostics Maker Tauns, Funds a Prospective Pancreatic Cancer Study and Expansion of U.S. Clinical Team Under New Chief Medical Officer Nick Bevins Nick Bevins, MD, PhD, Chief Medical Officer of Craif Nick Bevins,
Read more
Report
Craif Secures $33M for AI-Powered Urine Oncology Diagnostics
Craif Inc. secures $33M in Series D funding to expand its AI-powered urine microRNA cancer detection platform into the U.S. market.
Read more
Report
Report
Report
Early cancer detection startup Craif raises $22M
Cancer ranks as one of the top causes of death worldwide. The National Cancer Institute reported nearly 20 million new cancer cases and 9.7 million
Read more
Report
Craif Raises 1B Yen from Keisuke Honda's X&KSK in Series C1 Round, Total Funding Reaches 6.2B Yen
Craif, a startup developing ultra-early cancer detection technology using microRNA and AI, announced on December 23 that it has secured 1 billion yen from X&KSK, led by soccer star Keisuke Hond…
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Report
Tech stack
Technologies named in job postings at Craif over the last 12 months, by layer, with the share of postings for each.
Technologies in use
13
Postings analysed
3
Stack modernity
77/100
Languages
C++
Python
Frameworks & libraries
Keras
PyTorch
Scikit-learn
TensorFlow
Cloud & platforms
Figma
AWS
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Full Craif tech stack
13 technologies · by team · pay by technology · changes · similar stacks
People
Ryuichi Onose
Executive Officer, Director
Yuki Ichikawa
Director
Mika Yui
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
51/100
Stable
Open positions
12
0 opened / 0 closed in 30 days
ATS activity
Every ~4 hours
Today
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.
Customer Success
100% ▼
Activity Timeline
Added Machine Learning to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
Tokyo
Tokyo
Japan
HQ
11 open roles 1 posted in 90 days 45% engineering
hires for Backend, Design, Customer Success
Jobs
Equity • In office • Contractor
Python
C++
TensorFlow C++
AI/ML
Scikit-learn
TensorFlow
Keras
PyTorch
Machine Learning
DevOps
AWS
Docker
Life Sciences
PCR
Next-Generation Sequencing
Apply
Apply
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In office • Full-Time • Tokyo
Python
SQL
Scikit-learn
TensorFlow
DevOps
Docker
Linux
Apply
In office • Full-Time • Tokyo
MySQL
PostgreSQL
DevOps
GCP
Prometheus
CI/CD
AWS
Docker
Grafana
AWS Lambda
GitHub
API Gateway
Management
Agile
Apply
Apply
Apply
In office • Full-Time • Tokyo
Python
TypeScript
Django
DevOps
AWS
Amazon EC2
Amazon S3
Apply