About

Archive

January 1, 2022   2 minutes 378 words

Index

• Author
• Jobs
• Skills
• Qualifications

Author

umatare5 (Koshu T.)

• umatare5 is an SRE working in Japan.

  He has more than 10 years of industry experience, especially with in-depth knowledge of the networking includes wireless. He is good for realtime-processing likes packet analytics, metrics monitoring and others. He is also a backend engineer using Go and TypeScript.

Jobs

Company #4

• Software Engineer (2022/2 -)

Company #3

• Infrastructure Engineer (2014/7 - 2022/1)

Company #2

• Lead Infrastructure Engineer (2013/7 - 2014/4)
• Infrastructure Engineer (2010/7 - 2013/3)

Company #1

• Operator (2008/7 - 2010/6)
• Intern (2008/4 - 2008/6)

Second / Part-Time

• Engineer (2021/12 -)

Skills

Public Cloud / SaaS (2020-)

• Compute: AWS EC2, Google Compute Engine
• Container: AWS ECS, AWS Fargate, Google Cloud Run
• DNS: AWS Route53, Google Cloud DNS
• Mail: AWS SES
• Load Balancing: AWS ALB/NLB, Google Cloud Load Balancing
• Authentication: GCP Identity-Aware Proxy, GCP Workload Identity, Auth0
• Log Management: AWS CloudWatch Logs, Google Cloud Logging
• Monitoring: AWS CloudWatch, Google Cloud Monitoring, Datadog
• Configuration Management: CloudFormation, Terraform
• CI/CD: Github Actions
• Batch: AWS Lambda, Google Cloud Functions, Google Apps Script
• API: Google Cloud Endpoints
• BackOffice: Kintone, ServiceNow ITSM
• Drawing Tool: Lucidchart

Linux (2012-)

• DNS: BIND
• DHCP: ISC DHCP
• Web: Apache, Nginx, Squid
• Mail: Postfix, Sendmail, Dovecot
• FTP: vsftpd
• Load Balancing: Heartbeat, LTM
• Directory Service: OpenLDAP
• Authentication: FreeRADIUS
• Realtime Processing: Fluentd, Norikra
• Log Management: Rsyslog, swatch
• Monitoring: Nagios, Prometheus
• Observability: Cacti, Growthforecast, Kibana, Grafana
• Configuration Management: Chef, Ansible
• NoSQL: MongoDB
• Timeseries: Elasticsearch, InfluxDB, Cortex
• CI/CD: Jenkins, Drone
• Drawing Tool: Cacoo, draw.io, Google Slide

Networking (2012-2020)

• Load Balancing: F5
• Routing and Switching: Cisco
• Wireless: Cisco, Meraki
• Security: Cisco, Juniper Networks

Storage (2012-2014)

• SAS: MSA
• iSCSI: Lefthand
• FC: NetApp

Virtualization (2010-)

• Hypervisor: KVM, vSphere, Hyper-V
• Security: vCenter SSO
• Backup & Recovery: vCenter DataRecovery
• Desktop: Horizon View
• Application: Docker Swarm
• Others: vCenter Server, vCenter Converter

Windows (2008-2014)

• DNS: Microsoft DNS
• DHCP: Microsoft DHCP
• Web: IIS
• Mail: IIS SMTP
• FTP: IIS FTP
• Load Balancing: NLB, MSFC
• Directory Service: Active Directory
• Authentication: ADCS, NPS
• Security: WSUS
• Backup & Recovery: BackupExec
• Batch: JP1/AJS
• Drawing Tool: Visio

Programming (2008-)

• Powershell: 1 to 2 (2008-2014)
• ASP.NET and C#.NET: 2.0 to 3.5 (2012-2014)
• Ruby: 2.3 to 2.7 (2016-2020)
• TypeScript: 2.2 to latest (2016-)
• Go: 1.15 to latest (2020-)

Qualifications

• Amateur Third-Class Radio Operator
• Maritime Ⅱ-Category Special Radio Operator
• On-The-Ground Ⅲ-Category Special Radio Operator