ThreeShake's Kubestronaut
2026-06-18 17:05:49

ThreeShake Engineer Recognized as Kubestronaut for Kubernetes Expertise

ThreeShake Engineer Recognized as Kubestronaut



In a significant achievement for ThreeShake, a prominent technology company based in Tokyo, Yuki Kawamata has earned the coveted title of Kubestronaut. This certification, awarded by the Cloud Native Computing Foundation (CNCF), showcases Kawamata's remarkable skills in the realm of Kubernetes, the leading platform for container orchestration.

What is the Kubestronaut Program?



Launched in March 2024, the Kubestronaut Program recognizes community leaders who have continuously honed their Kubernetes skills. To obtain the Kubestronaut certification, candidates must pass all five of the following Kubernetes certifications:
  • - Certified Kubernetes Administrator (CKA)
  • - Certified Kubernetes Application Developer (CKAD)
  • - Certified Kubernetes Security Specialist (CKS)
  • - Kubernetes and Cloud Native Associate (KCNA)
  • - Kubernetes and Cloud Security Associate (KCSA)

These credentials must remain valid, demonstrating the candidate's ongoing commitment to educational growth and industry standards.

Meet Yuki Kawamata



Kawamata, who is part of the SRE (Site Reliability Engineering) division at ThreeShake, has extensive experience in backend development and Google Kubernetes Engine (GKE) design and operations. Since joining ThreeShake in November 2024, he has focused on the design and management of container infrastructure centered on Kubernetes, the application of cloud-native technologies, security, and operational improvements. His specialization lies in building and operating reliable platforms using Kubernetes and related technologies.

Yuki's Thoughts on the Recognition



Kawamata expressed his honor at being named a Kubestronaut, stating, "I am truly grateful for this recognition. This year, I plan to proactively share information through speaking engagements and blogs, enhancing my technical contributions related to AWS. I aim to leverage the learnings and experiences I have gained to help foster further growth within the AWS community beyond my company’s confines."

About ThreeShake



Sreake Consulting Services



Sreake is ThreeShake's flagship service dedicated to implementing and practicing SRE principles. Serving sectors such as finance, manufacturing, retail, AI, and media, Sreake supports the adoption of cloud-native technologies, as well as the development and operational processes advocated by Google’s SRE philosophy. The service integrates cutting-edge technical expertise in areas like Google Cloud, AWS, Kubernetes, and observability, establishing a robust infrastructure culture that aims for in-house SRE capability within organizations.

Company Overview



Founded in 2015, ThreeShake specializes in IT infrastructure and management consulting. The company's SRE consulting service, Sreake, is backed by professionals skilled in AWS, Google Cloud, and Kubernetes. In addition to their SRE offerings, ThreeShake launched a cloud-based data integration tool called Reckoner in April 2020. This tool facilitates the easy application of big data for business analytics and marketing purposes. Following this, ThreeShake expanded its portfolio to include the freelancer-focused recruiting service Relance and a security service named Securify. Together, these services provide a comprehensive solution for organizations navigating the complexities of digital transformation.

For more information, visit ThreeShake's website.

Contact Information


For inquiries related to this announcement or to request an interview, please reach out to:
Corporate Name: ThreeShake, Inc.
Representative: CEO Takuma Yoshida
Location: 7th Floor, Sumitomo Realty Shiodome Hamariyku Building, 8-21-1 Ginza, Chuo-ku, Tokyo
Service Site: Sreake
Security Service Site: Securify
Reckoner Site: Reckoner
Relance Site: Relance
Company HP: ThreeShake


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