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Jobs→BEENOS株式会社→Infrastructure Engineer (Senior) for Global Commerce Core Service "Buyee"

Infrastructure Engineer (Senior) for Global Commerce Core Service "Buyee"English summary from Japanese

BEENOS株式会社

✓ Detailed
Salary
応相談 ・年俸制(12分割) ・半期単位での評価・給与改定あり ・賞与年1回(但し会社の業績・個人の成果による)
Location
141-0031 東京都品川区西五反田8-4-13 五反田JPビルディング7階
Job Type
Full-time
Work Style
裁量労働制又は、フレックスタイム制(コアタイム 10:00~15:00) ・裁量労働制の場合  - 1日あたりのみなし労働時間:8時間30分 ・フレックスタイム制の場合  - 1日の標準労働時間:7時間30分  - 20時間のみなし残業代あり 時間外労働手当:清算期間における総労働時間の総枠を超えて勤務した労働に対して支給する
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Role summaryEnglish summary from Japanese

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

Seeking a Senior Infrastructure Engineer to support the core of Buyee, a leading cross-border e-commerce service. The team is responsible for the stable operation of AWS-based infrastructure, including new construction and ongoing maintenance, for a global user base.

Must-haves

  • 5+ years of infrastructure design, construction, and operation experience in AWS, or 3+ years with lead responsibility.
  • Practical experience using AI coding assistants (e.g., GitHub Copilot, Claude).
  • Infrastructure team lead experience.
  • Production operation experience with container environments using AWS (ECS).
  • Experience in AWS network and security design (VPC, ALB, CloudFront, WAF).
  • Experience with infrastructure configuration management (IaC) using Terraform and team development.
  • Experience in designing and building CI/CD pipelines.

Nice-to-haves

  • Experience introducing and operating the latest AWS services and security services (VPC Lattice, Cognito, AWS Config, GuardDuty).
  • Experience designing and operating modern observability platforms (Datadog, Grafana, AWS X-Ray).

About the Company

BEENOS株式会社

Headquarters
東京都品川区西五反田8-4-13 五反田JPビルディング7F
Founded
1999-11
Visit Website
Posted6/5/2026
Sourceherp
  • Experience in cost optimization and performance tuning in large-scale, high-traffic environments.
  • Advanced experience in database operation, tuning, and migration (MySQL tuning, migration to Aurora MySQL).
  • Experience in architecture replacement (monolith to microservices, strangler pattern).
  • Experience in streamlining infrastructure operations using AI agents.
  • Tech stack

    AWSIAMVPCRoute 53ACMEC2RDSElastiCacheCloudFrontS3ECSLambdaAPI GatewaySecrets ManagerCloudFormationLinux (AlmaLinux)DockerGitGitHubTerraformAnsibleBacklogRedmine

    Work style

    Onsite in Tokyo (Gotanda JP Building 7F, 8-4-13 Nishi-Gotanda, Shinagawa-ku, Tokyo). Discretionary labor system or Flextime system (core hours 10:00 AM - 3:00 PM).

    Other notes

    Salary is negotiable. Annual bonus based on company performance and individual results. Probationary period of 3 months.