We are looking for a Platform engineer to take ownership of Internal Developer Platform (IDP) development for powering HENNGE One, our flagship cloud-security suite serving over 2.8 million users globally. As a B2B SaaS leader in Japan, we provide mission-critical security solutions that empower enterprises to work safely from anywhere.
In this role, you will join the Platform team, to build,evolve and maintain our Internal Developer Platform leveraging cloud native technologies (Kubernetes) and AWS services. Your mission is to empower our product development teams to build, ship and run their applications securely and efficiently. To succeed in this role, you will bring a strong technical foundation in Kubernetes and AWS.
Tech Stack: Kubernetes (EKS), AWS, ArgoCD, Terraform, Backstage, Kyverno
Responsibilities
- Design, develop, and maintain Internal Developer Platform (IDP) using Kubernetes and AWS services
- Contribute to technical discussion to help define the architecture, roadmap and the future direction of the IDP
- Collaborate with product development teams to seamlessly onboard their product onto the IDP.
- Participate actively in code reviews, discussions and technical decision-making
Requirements
- 3 years of experience working with production Kubernetes on cloud, preferably AWS EKS. (Note: please mention the exact years of professional experience with Kubernetes in your cv).
- 3 years of experience building and managing AWS infrastructure with Terraform.
- Hands-on experience with ArgoCD and Kustomize and authoring/deploying Helm charts.
- Experience building and maintaining web application pipelines using GitHub Actions.
- Ability to take technical initiatives, mentor junior engineers, and work collaboratively in a team environment.
Nice to haves
While not specifically required, tell us if you have any of the following.
- Degree in Computer Science or related technical field.
- Relevant industry certifications, such as:
- Certified Kubernetes Administrator (CKA), Certified Kubernetes Application Developer (CKAD), or Certified Cloud Native Platform Engineer (CNPE)
- AWS Certified Solutions Architect (Associate/Professional) or AWS Certified Security - Specialty
- HashiCorp Certified: Terraform Associate
- Hands-on experience building custom Kubernetes controllers and implementing policy management tools like Kyverno .
- Experience with Backstage (or similar Internal Developer Portal frameworks)
- Experience setting up and managing observability tools (OpenTelemetry, Grafana / LGTM stack).
- Strong understanding of AWS security best practices.
- Track record of contributing to CNCF open-source projects or speaking at cloud-native tech conferences.
- Strong technical communication and writing skills (runbooks, documentation) to collaborate effectively across Platform and Product teams via code reviews and technical discussions.
- Conversational Japanese to coordinate with external vendors (e.g. AWS Japan), cross-functional divisions, and local communities.
Compensation
¥8,000,000 ~ ¥10,500,000 annually.
Our salary range is inclusive of English Allowance & Physical Communication Bonus - please check the details below, with the final amount determined based on your experience and skills.
Please refer to our Company Introduction Deck for an explanation of our Assessment System and the Belt System, which we use to determine the candidate’s salary range.
Benefits
- English Allowance and Advanced Language Expert Allowance: JPY 10,000 ~ JPY 130,000 per month, paid alongside base salary, if the employee fulfills the requirements.
- Physical Communication Bonus: JPY 4,000 per day (JPY 5,000 per day from October 2026) for coming to the office and interacting with other employees, paid out as bonus according to the number of days. Details will be provided at the offer meeting.
Details will be provided at the offer meeting.
