Іван

49 Heroiv Dnipra

Ivan Lastenko Kyiv, 01001
[открыть контакты](см. выше в блоке «контактная информация»)
[открыть контакты](см. выше в блоке «контактная информация»)

EXPERIENCE SKILLS

Cosmonova, Kyiv— L1 Network Administrator ​Interpersonal
April 2024 - Current Communication Skills

Provided first-level support for network issues, troubleshooting – ​Excellent Communication
connectivity problems, and assisting users with technical inquiries. Skills

Collaborated with Level 2 support / NOC engineers / IPTV dept. to ​Leadership Skills
resolve more complex issues, contributing to effective problem-solving
​High responsibility
and service delivery.​
​
Cosmonova, Kyiv— L2 Network Administrator (Junior NOC
engineer) TCP/IP, OSI, Routing and
Switching, VPNs, IP-Telephony​
Nov 2024 - Current
​
Assisted in monitoring and maintaining network infrastructure, VPS, Hypervisors (Proxmox in
ensuring optimal performance and uptime. general)​
Diagnosed and resolved network incidents, working with providers and ​
clients to ensure timely issue resolution. Linux (basic)​
​
Configured and managed networking equipment, including MikroTik,
Firewalls, PowerDNS​
Arista, and eXtreme, handling VLANs, VPNs, and routing protocols.
​
Utilized monitoring tools like Zabbix to track network performance and Zabbix, Company Billing (CRM)​
proactively address potential issues.

Collaborated with Level 3 engineers to troubleshoot complex network
Python, CI/CD, Docker
problems and implement improvements.

​ Networking Equipment,
Mikrotik, Arista, eXtreme
Cybersecurity Knowledge & Experience
MySQL, SQLite
●​ Solid understanding of network security principles, including
firewalls, VPNs, and access control policies.
●​ Familiar with OWASP, MITRE ATT&CK, SO 27001, GDPR, NIST,
LANGUAGES
COBIT, ITIL frameworks and IT security management best
practices.
Ukrainian, Russian - Fluent​
●​ Hands-on experience with network scanning (Nmap), and traffic
English - Proficient B2+ - C1
analysis (Wireshark).
●​ Knowledge of intrusion detection/prevention systems (IDS/IPS)
and protection mechanisms against cyber threats.
●​ Experience with SQL security, including protection against SQL
 injection and database access control.
●​ Understanding of DDoS mitigation techniques and strategies for
preventing service disruptions.
●​ Strong grasp of CIA triad (Confidentiality, Integrity, Availability)
and risk management concepts.

EDUCATION

Kyiv Polytechnic Institute, Faculty of Applied Math
September 2022 - Present

I’m diligently studying at the Applied Math Faculty at KPI
(Mathematical modeling and data analysis), which enriches my
problem-solving skills and technical knowledge. This rigorous academic
background complements my ability to efficiently manage multiple
working environments, analyze complex systems, and adapt to dynamic
circumstances.

PROJECTS
​
Mikrotik/Keenetic/Ubiquiti Configuration Experience​
Gained practical experience in setting up routers and switches,
including configuring VLANs, VPNs, firewall rules, and network
security policies.

Diagnostics Automation​
Developing a script to automate the diagnostic process for last-mile
connectivity issues with internet service providers, enhancing efficiency
and reducing troubleshooting time.

Setting Up My Own VPN​
Configured a personal VPN server to ensure secure remote access,
implementing encryption protocols, traffic routing, and access control
mechanisms.