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Jobs→シェルフィー株式会社→[In-house Development/Flex Time] Tackle a massive 63 trillion JPY market. Seeking SREs to 'build and maintain secure environments and earn trust' for Vertical SaaS used by 330,000 companies

[In-house Development/Flex Time] Tackle a massive 63 trillion JPY market. Seeking SREs to 'build and maintain secure environments and earn trust' for Vertical SaaS used by 330,000 companiesEnglish summary from Japanese

シェルフィー株式会社

✓ Detailed
Salary
5.82M JPY - 8.94M JPY
Apply on FINDY

Role summaryEnglish summary from Japanese

English summary for screening — check the original posting before applying.

We are seeking SREs to enhance the reliability, availability, and scalability of our Vertical SaaS product, Greenfile.work, which is used by 330,000 companies. You will collaborate with the product team to design, build, and maintain secure and trustworthy environments.

Must-haves

  • Experience developing/operating commercial services using public cloud (AWS/GCP/Azure)
  • Experience operating web applications or web services
  • Understanding of foundational technologies supporting web services (Linux, network, databases, HTTP)
  • Experience managing infrastructure using Infrastructure as Code
  • Experience in team development using Git

Nice-to-haves

  • Experience with Kubernetes/Amazon EKS
  • Experience operating services using Amazon ECS
  • Practical experience with IaC tools (AWS CDK, Terraform, CloudFormation)
  • Experience building/improving observability platforms (e.g., Datadog)
  • Experience with SLI/SLO/Error Budget design and operation
  • Experience improving performance of large-scale web services

About the Company

シェルフィー株式会社

Visit Website
Posted8/17/2026
Sourcefindy

Tech stack

AWSEKSECSCDKDatadogCloudWatchAurora PostgreSQLDynamoDBOpenSearchJavaScriptTypeScriptPythonKotlinReactDjango REST frameworkSpring BootCodePipelineCodeBuildGitHub

Work style

Hybrid work is possible. The office is located in Tokyo, Meguro-ku. We expect employees to come to the office 3-4 days a week for team building, but are open to discussing work arrangements.

Other notes

Annual salary: 5,820,000 JPY - 8,940,000 JPY. Flexible working hours with core time from 11:00 to 17:00.