SHOTA YOSHIMURA
Asaka
Summary
Adept at driving technological advancements, I spearheaded the development of a Kubernetes platform at LY Corporation, managing over 1,600 clusters, which significantly enhanced system reliability and performance. My expertise in Docker, Kubernetes, and proactive problem-solving has consistently improved operational efficiencies. Demonstrated leadership in migrating NTT Communications' data analytics to a robust Kubernetes environment showcases my ability to innovate and collaborate effectively.
Overview
13
13
years of professional experience
1
1
Certification
Work History
Software Engineer
LY Corporation
08.2020 - Current
- Developed and operated a private Kubernetes as a Service platform managing over 1,600 clusters, 60,000 nodes, and 110,000 containers.
- Developed and maintained a system for deploying essential Kubernetes add-ons such as Prometheus, kube-state-metrics, and CoreDNS to enhance observability and functionality across 1,600+ clusters.
- Developed E2E tests to ensure the stability and reliability of Kubernetes clusters, and conducted ongoing research on the latest patch releases.
- Created and maintained comprehensive documentation for users, covering Kubernetes usage, troubleshooting, and best practices, reducing Kubernetes-related inquiries by 60%.
- Provided technical support to users, assisting with troubleshooting and answering questions related to Kubernetes.
- Led the development and user support team, coordinating with other teams and managing team progress.
- Successfully reduced resource consumption by 60,000 nodes through regular optimization of DaemonSet managed by addons.
- Successfully implemented a daily vulnerability scanning process for container images managed by addons, consistently maintaining a zero-vulnerability state.
Infrastructure/Big Data Engineer
NTT Communications
02.2018 - 07.2020
- Developed a large-scale big data analytics platform capable of processing hundreds of terabytes of data using Hadoop, Kafka, and Presto. Engineered robust data pipelines to ensure efficient data ingestion and transformation.
- Successfully migrated container orchestration from Docker Swarm to Kubernetes, significantly improving scalability, reliability, and manageability.
- Built a comprehensive data science platform for 20-30 data scientists, utilizing RStudio, JupyterLab, Metabase, and Tableau to facilitate efficient data exploration and analysis.
- Developed a robust monitoring infrastructure for 40-50 servers using Prometheus, Grafana, Loki, VictoriaMetrics, and Alertmanager, enabling proactive issue detection and resolution.
- Implemented a modern development environment for a team of approximately 100 developers, leveraging GitLab, Mattermost, HackMD, and Growi to foster collaboration and improve development efficiency.
Infrastructure Engineer
NTT Comware
04.2012 - 01.2018
- Developed systems for large-scale enterprise companies with over 10,000 employees.
- Led a project to modernize a legacy call center system for a telecommunications company, replacing it with a Solr/PostgreSQL-based solution. This significantly improved search performance and reduced maintenance costs.
- Successfully migrated a telecommunications company's legacy business processes to a modern platform utilizing Intra-mart (BPM) and Alfresco (ECM), streamlining workflows and document management.
Education
Master of Science - Electronic And Information Engineering
Tokyo University of Science
Chiba, Japan03-2012
Bachelor of Science - Electronic And Information Engineering
Tokyo University of Science
Chiba, Japan03-2010
Skills
- Container: Docker, Kubernetes
- OS: Windows, Linux (RHEL, Ubuntu)
- Language: Go, Java, SQL, PromQL
- BigData: Hadoop, Spark, Kafka, Presto
- CI/CD: GithubActions, ArgoCD, GitLabCI
- Monitoring: Prometheus, Grafana, Loki, Thanos, Alertmanager, Zabbix
- DB: PostgreSQL, MySQL, OracleDB
- BI: Tableau, RStudio, JupyterLab, Metabase
- Workflow: JP1, Crane
Certification
- Kubernetes Certification, CKAD/CKA - Cloud Native Computing Foundation.
- Professional Cloud Architect - Google Cloud Certification.
- System Architect - Information-technology Promotion Agency, Japan(IPA).
Languages
Japanese
Native language
English
Intermediate
B1
Speakers
- "Kubernetes Observability Introduction" at Observability Conference 2022.
- "Modernizing Infrastructure Design in a Traditional Enterprise" at July Tech Festa 2020.
- "Kubernetes Introduction" at NTT Tech Conference 2020.
- "Kubernetes Logging Introduction" at CloudNative Days Tokyo 2019.
Timeline
Software Engineer
LY Corporation
08.2020 - Current
Infrastructure/Big Data Engineer
NTT Communications
02.2018 - 07.2020
Infrastructure Engineer
NTT Comware
04.2012 - 01.2018
- Kubernetes Certification, CKAD/CKA - Cloud Native Computing Foundation.
- Professional Cloud Architect - Google Cloud Certification.
- System Architect - Information-technology Promotion Agency, Japan(IPA).
Master of Science - Electronic And Information Engineering
Tokyo University of Science
Bachelor of Science - Electronic And Information Engineering
Tokyo University of Science
Similar Profiles
Yuma ItonagaYuma Itonaga
Software Engineer at LY CorporationSoftware Engineer at LY Corporation
Aston ThaoAston Thao
Real Estate Intern and Helper at See Ly Real Estate, IncReal Estate Intern and Helper at See Ly Real Estate, Inc
Laritza BrizoLaritza Brizo
Truck Dispatcher at LY Express LLCTruck Dispatcher at LY Express LLC