This position involves software engineering for our products, including Takumi byGMO, with a focus on product improvement and operational participation.
About this role
GMO Flatt Security, a cybersecurity start-up, is hiring a Software Engineer to build its products, above all Takumi byGMO, an AI agent that finds and fixes vulnerabilities by automating attacks. Other products include the cloud-security tool Shisho Cloud, the Firecracker-based sandbox platform Sunaba that runs the agent safely in a multi-tenant setting, and the engineer e-learning service KENRO. The team follows a you-build-it-you-run-it principle and talks directly with users, who are engineers.
The engineer develops and operates these products, including SaaS user experience, agent infrastructure and ETL platforms, and works with the team through code review, design discussion and demos. The stack is mainly Go and Rust, GraphQL and Protocol Buffers, Next.js, GCP and AWS, and Kubernetes. English is the company's official language.
Applicants need a computer-science degree or equivalent experience, Go experience, deep knowledge of OS, networking, middleware and security, experience running Kubernetes or Istio, infrastructure as code, cloud-native development and CI/CD. Japanese is not required; technical discussion in English, at least in writing, is. Distributed-systems or security research experience is preferred.
This is an AI-generated summary of the employer's original posting — details can be incomplete, out of date or simply wrong. Always confirm everything on the official posting before applying.
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