Senior Site Reliability Engineer (AWS)

Location: Tokyo, Japan; hybrid work with 3 days per week in the Tokyo office. Up to 5% travel may be required.

Company

An AI product company building an agentic experience platform that helps marketing and data teams automate ROI-driven customer engagement across web, mobile, and desktop.

What you will do

• Help define and execute the technical roadmap for the AWS cloud platform, including EC2, Kubernetes, CI/CD, observability, infrastructure as code, and engineering tooling.
• Collaborate with service teams to automate workflows, drive adoption of platform releases, and contribute improvements across codebases.
• Optimize AWS networking, storage, compute, and orchestration layers to improve efficiency and reduce costs.
• Partner with security and IT teams to identify vulnerabilities, automate access management, and maintain strong security standards.
• Explore AI applications in SRE and engineering, building tooling and workflows for organizational adoption.
• Advise new projects on reliable, efficient architecture and mentor junior engineers.

Requirements

• 5+ years of experience in SRE, DevOps, software engineering, or a related role working with distributed systems at scale.
• Hands-on experience with AWS and related cloud technologies such as EKS, EC2, and infrastructure as code.
• Proficiency in at least one programming language, such as Python or Go.
• Experience with modern SaaS development practices, including Git and CI/CD.
• Strong English communication skills are required for collaboration in a diverse, distributed environment.

Nice to have

• Advanced knowledge of AWS cloud networking.
• Understanding of Agile practices such as Scrum or Kanban.
• Open-source community contributions.
• Conversational Japanese skills.

Culture & Benefits

• Work with an approximately 10-person Japan SRE team within Engineering Services.
• Collaborate asynchronously with a North American SRE team through Slack, Jira, and Confluence.
• Share a backlog and on-call rotation with the North American team to provide around-the-clock coverage.
• Work in an environment focused on diversity, equity, inclusion, belonging, ownership, and continuous innovation.