Flatt Security

Cybersecurity · Vulnerability Assessment · Application Security · Shibuya, Tokyo

GMO Flatt Security is a cybersecurity company serving organizations that develop and operate software. Its specialists assess web and mobile applications, cloud environments, platforms, IoT systems and source code, while its penetration tests examine whether vulnerabilities can be exploited. It earns revenue from assessment engagements and paid security-product plans.

Its Takumi byGMO AI agent reviews source code and running applications for vulnerabilities. The company also offers Shisho Cloud, secure-coding training through KENRO, and services that assess software-supply-chain exposure and train development teams to respond to dependency or CI/CD compromises.

No Japanese required
2 of 2
Can be worked in English
2 of 2
Most requested
  • No Japanese required 2
Common areas
  • Backend engineering 1

Measured from the 2 listings Ranked has live for Flatt Security. Japanese level, visa signal and skills are AI-graded from each posting and can be wrong — confirm against the employer's original posting before applying.

2

Full-time

No JP needed

EN required

Backend

Full-stack

Cybersec

This position involves software engineering for our products including Takumi byGMO, focusing on product improvement and operational participation.

New Grad

No JP needed

EN required

Backend

Cybersec

Startup

This position involves software engineering for our products, including Takumi byGMO, with a focus on product improvement and operational participation.