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City

Full-time
Japanese? ⓘ
Remote
SRE
AWS
K8s
Lead the SRE team for a data-focused SaaS product, setting its roadmap, managing members, and improving Kubernetes scalability, observability, security, operating costs, and CI/CD.
PrimeNumber operates data technology services including the cloud ETL product TROCCO, the AI data platform COMETA, professional services for data technology challenges, and the agent-based AI solution primeBusinessAgent. This role leads the SRE team supporting a SaaS product in the data engineering domain.
The SRE team was established approximately four years ago. Work on major foundational issues has included SOC 2 preparation and addressing a database log backlog of approximately 400 million records and 9 TB. The team is now focusing on future-oriented initiatives such as improving observability and continuing to enhance existing systems. As the number of products and development projects grows, SRE also supports development teams across the organization and must design priorities for where and how to engage with limited resources.
The SRE Lead is responsible for maximizing team results. The role involves creating the SRE roadmap, reaching alignment through discussions with management and business stakeholders, managing the team and its members, and driving solutions to technical issues. The position also includes opportunities to participate directly in system design and implementation.
Examples of the work include improving the scalability of the Kubernetes platform, identifying and resolving monitoring issues, monitoring SLI and SLO performance, optimizing infrastructure and operational costs, implementing product security measures including SOC 2 activities, improving CI/CD pipelines, and creating mechanisms for earlier incident detection and investigation.
The listed development environment includes Ruby with Rails, TypeScript with React, and Java with Embulk. Infrastructure is centered on AWS, including EKS and ECS Fargate. Configuration management tools are Kustomize, Ecspresso, and Terraform. Monitoring tools are CloudWatch, New Relic, Redash, and Rollbar. CI/CD tools are CircleCI and GitHub Actions. Listed AI tools are Claude Code, GitHub Copilot, and Gemini. Communication tools are GitHub, Google Workspace, Slack, Confluence, and Miro, with 1Password also listed.
The stated work location is in Shinagawa, Tokyo. The location information includes employees' homes and other telework locations, and changes may include company-designated locations that also include telework. Indoor smoking is generally prohibited, and the posting states that the role does not involve work in areas where smoking is permitted.
Job details
About PrimeNumber
primeNumber is a Japanese data-tech company whose trocco platform helps businesses integrate, transfer and manage data for analytics.
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