• Operate and maintain the company's AWS infrastructure, supporting internal teams on AWS-related issues
• Regularly review and analyze AWS costs to identify cost drivers and inefficiencies
• Collaborate with partners and internal teams to design, implement, and track cost optimization initiatives
• Design and improve system architecture to ensure adequate performance, sufficient security, and cost efficiency
• Optimize AWS resources across compute, storage, and networking
• Provide cost-efficient architecture consulting to product teams
• Propose and implement AWS cost-saving initiatives
• Prepare periodic reports on cost status, optimization outcomes, and improvement plans
• Bachelor's degree in Computer Science,
Software Engineering, or a related field
• At least 3 years of experience working with AWS
• Hands-on experience operating AWS in production environments
• Experience with multi-account, multi-environment architectures
• Experience in AWS cost optimization
• Strong understanding of AWS cost structure and key cost drivers
• Cost-aware / cost-by-design mindset
• Solid knowledge of core AWS services and their cost impact: EC2, S3, NAT Gateway, CloudFront, Data Transfer
• Good understanding and practical application of AWS Well-Architected Framework
Nice to have:
• AWS certifications such as Solutions Architect,
DevOps Engineer, etc.
• Strong discipline in punctuality, meeting deadlines, and respecting schedules.
• Proficiency in Japanese and familiarity with Japanese business culture.
• Ability to adapt to a structured, detail-oriented, and continuous-improvement working style.
• High sense of responsibility, honesty, and commitment to collective goals.