Dmitrii Kadushkin

L2 Support Engineer / Linux System Administrator

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Email
red8192cat@gmail.com
LinkedIn
linkedin.com/in/red8192cat
Telegram
t.me/void8192
Location
Cyprus
Experienced Linux System Administrator and L2 Support Engineer with over 5 years in IT infrastructure, cloud environments, and technical support. Skilled in Linux systems administration, basic Docker/Kubernetes, monitoring, automation with Bash, and cross-team collaboration.

Experience

Jan 2022 — Dec 2025
L2 Support Engineer
GridGain — Larnaca, Cyprus
  • Administered Linux virtual machines in cloud environments
  • Used Docker and Kubernetes for container orchestration
  • Monitored infrastructure using Zabbix and Datadog
  • Handled support tickets in Jira, documented solutions in Confluence
  • Automated operational tasks using Bash scripts
  • Analyzed system and Java application logs for troubleshooting
  • Collaborated closely with QA, Release Engineering, and DevOps teams
  • Trained new team members and worked fully in English
Aug 2021 — Dec 2021
Cloud Services Engineer
Huawei Technologies — Moscow, Russia
  • Resolved cloud-related support tickets in English
  • Supported enterprise customers and internal teams
Oct 2020 — Jul 2021
Linux Technical Support Engineer
DataLine Co — Moscow, Russia
  • Managed Linux servers (CentOS 7, Oracle Linux 7) for enterprise clients
  • Monitored server health, analyzed load, and optimized performance
  • Performed LVM disk expansion, log rotation, and network setup
  • Handled incident escalation and ticket prioritization
  • Deployed virtual machines via vCloud Director and vSphere
  • Analyzed logs (nginx, PHP), worked with grep/sed/vi configs
  • Configured DNS, VPN, and firewall (iptables)
  • Provided guidance to Level 1 engineers
  • Set up FTP servers and DBaaS instances (MySQL, PostgreSQL, Redis)
  • Recovered systems from rescue mode (fstab fixes, root password reset)
Feb 2020 — Sep 2020
Data Center Support Engineer
DataLine Co — Moscow, Russia
  • Monitored data center operations and performed inspections
  • Installed, maintained, and decommissioned server hardware
  • Managed structured cabling (copper and fiber), configured PDU and ATS
  • Created and tracked incident tickets; assisted clients on-site
  • Conducted inventory and prepared equipment acceptance reports
Jan 2020 — May 2020
Electronics Service Engineer
Paycon — Moscow, Russia
  • Installed, configured, and serviced company hardware (smart shopping carts)
  • Performed modular and component-level electronic repairs
  • Conducted initial testing and fine-tuning of hardware
Jun 2018 — Dec 2018
Research Engineer
Russian Space Systems — Moscow, Russia
  • Developed and tested electronic prototypes for aerospace applications
  • Participated in hardware debugging and functional testing

Education

Bachelor’s Degree in Autonomous Control Systems
Bauman Moscow State Technical University — Moscow, 2020

Skills

 Linux    Docker    Kubernetes    Bash    Zabbix    JIRA    Confluence    Ansible    VMware    Git    Log Analysis