As our systems grow in complexity, scale, and traffic, maintaining their reliability and availability becomes increasingly challenging—and critical. We’re looking for a Site Reliability Engineer (SRE) with a focus for observability to help us meet these demands.
In this role, you’ll be at the forefront of ensuring that our infrastructure is not just running, but understandable and measurable. Observability is a core pillar of our reliability strategy—it’s how we detect issues before they impact our merchants and users, quickly understand the root causes of incidents, and continuously improve our systems performance and reliability.
You’ll design and evolve our observability platform, including metrics, logging, tracing, and alerting, and partner with development teams to embed observability into every stage of the software lifecycle. Your work will directly impact our ability to scale confidently and respond to incidents swiftly.
This is a key role for someone who wants to build resilient systems, empower teams with actionable insights, and make a real difference in how we operate at scale.
While we are a remote-first company, this position is based in Tokyo, and we expect candidates to be willing to relocate to Japan.
Responsibilities
- Design, implement, and maintain our observability stack (metrics, logging, tracing, dashboards).
- Define and monitor SLIs/SLOs to ensure service health and reliability.
- Correspond with engineering teams to instrument applications for better visibility.
- Build and maintain dashboards and alerts that provide actionable insights and minimize alert fatigue.
- Troubleshoot system performance and reliability issues using observability data.
- Educate and guide engineering teams on best practices in monitoring, alerting, and incident response.
- Contribute to postmortems and continuously improve system transparency and resiliency.
Requirements
- 3+ years in SRE roles.
- Hands-on experience with observability tools, preferably Datadog.
- Proficiency in Terraform.
- Background in software development.
- Proficiency in at least one scripting or programming language (Ruby/Rails, Python, Go, Shell Script, etc.).
- Experience working with AWS.
- Familiarity with monitoring design principles: RED, USE, SLI/SLO, alert tuning.
- Ability to analyze logs, metrics, and traces to diagnose issues and identify trends.
Nice to haves
While not specifically required, tell us if you have any of the following.
- Knowledge of CI/CD pipelines and integrating observability into build and deploy processes.
- Familiarity with incident response, on-call rotations, and post-incident reviews.
- Business-level Japanese.
Compensation
Includes (rough estimate of) profit share. Based on experience and skill level.
