Sergei Youdachev Email & Phone Number

Melbourne, Vic, Au

Melbourne, Vic, Au

Australia

• Virtualization technologies: Administered Linux-based virtualized environments using Proxmox and VMware, optimizing resource utilization and ensuring high availability of virtual machines.• Systems hardening: Applied comprehensive hardening techniques to secure Linux servers, enhancing their resistance to unauthorized access and vulnerabilities.• Security tools integration and monitoring: : Deployed and managed using Ansible the integration of security patches and vulnerability scanning, the Wazuh SIEM system, Zabbix and Prometheus for real-time monitoring of server metrics, enabling proactive identification and resolution of potential issues.• NGINX proxy implementation: Designed and implemented NGINX as a web proxy to efficiently route traffic, ensuring high availability and enabling fallback pages during maintenance, improving user experience and system reliability.• Network forensics and logs investigation: Monitored and analyzed network traffic using tools like Wireshark to identify suspicious activities and troubleshoot connectivity issues. Investigated abnormal traffic patterns and implemented real-time IP blocking to mitigate security threats. • Network security and traffic management: Managed and configured network gateways and switches to ensure secure and efficient data traffic, while implementing and maintaining firewalls to enforce security policies and protect against unauthorized access and network threats.• Cybersecurity and compliance: Ensured adherence to Cybersecurity ISO 27001 standards, maintaining system and process compliance. Identified and mitigated cyber-attacks through continuous monitoring, threat analysis, and prompt incident response. Conducted comprehensive vulnerability scans using Nessus to detect and remediate security weaknesses across all systems.• Servers equipment installation & maintenance: Led the installation, configuration, and maintenance of server hardware, ensuring optimal performance and minimal downtime.

Melbourne, Victoria, Australia

• Comprehensive support: Provided Level 2 and 3 technology support, including Linux and Windows operating systems, software and hardware installation, Active Directory management. Managed imaging of laptops and desktops, and configured peripherals.• Linux and Windows server administration: Proficient in administering Linux and Windows servers, executing scripts, monitoring backups, and automating tasks using Bash and Python. • Patching and hardening: Performed regular patching and updates across servers and workstations using SCCM, as well as manual methods.• Technical solutions and assistance: Delivered technical solutions and assistance to end-users both in person and via remote access tools (RDP, VNC, NetSupport).• Security policies: Implemented and enforced security policies to safeguard IT systems and networks from unauthorised access, viruses, and threats. Administered McAfee EDR and Symantec Neural Scanner.• Network infrastructure and cybersecurity projects: Led infrastructure projects including EOSL (end of service life of hardware and OS), domain migration, and DNS remediation.• Advanced corporate support: Managed corporate password system, troubleshooted network connections, and resolved laboratory and production equipment connectivity issues.• SIEM tools usage: Conducted regular security audits using Splunk, managing cybersecurity scorecards and analysing logs and alerts. Responded promptly to critical changes, achieving a 20% improvement in critical metrics.• Security awareness training: Delivered security awareness training to staff across various departments and managed phishing simulations, resulting in a 25% improvement in overall end-user security scores.

Melbourne, Victoria, Australia

• Network equipment management: Installed, configured, and supported network equipment in the server room, including Linux servers, routers, switches, and setting up DNS and DHCP services.• IT support: Provided IT support to resolve technical issues with software, printers, desktops, hardware, network connections, and protocols, including SSH and Ansible. Managed Wi-Fi UniFi solutions from Ubiquiti Networks.• Hardware and OS management: Configured, installed, upgraded, and supported IT hardware, antivirus solutions, and PC operating systems such as Linux and Windows 7/10/11. • Virtualization technologies: Experienced in creating and managing virtual machines using virtualisation technologies, including Proxmox and VMware.• VOIP and Tecom Security Administration: Administered VOIP Telephony and Tecom security platform, providing user access, controls, and privileges, ensuring adherence to security policies, and minimising risk exposure through strict access management practices.• Security solutions configuration: Configured and maintained security solutions, including firewalls and intrusion detection systems, to safeguard the network against malware and cyber threats, enhancing the organization’s overall security posture.• Documentation: Developed and maintained documentation, including policies, study materials, manuals,procedures, and incident reports, ensuring compliance with regulatory frameworks, and facilitating auditing processes.

Truganina, Vic

• Desktop and Laptop Deployment: Imaged, configured, customized, and deployed new desktop and laptop computers.• Tier 2 Technical Support: Provided Tier 2 technical support for network, software, hardware, and printers.• Microsoft 365 Administration: Undertook an administration role in Microsoft 365.• System Infrastructure Maintenance: Maintained routers, switches, and firewalls to ensure a secure system infrastructure.• Project Leadership: Led projects focused on upgrading operating systems and implementing effective configuration management strategies.

Moorabbin, Victoria, Australia

• Hardware Testing and Installation: Tested and installed motherboards, processors, and graphics cards on desktops for corporate staff.• Technical Support for Company Computers: Provided technical support for company computers, including user account creation, software installations, workstation setups, and IT induction.• Network and Peripheral Equipment Linking: Linked computers to computer networks and peripheral equipment such as printers and RF scanners.• Endpoint Protection and Network Support: Implemented and updated Endpoint Protections, supporting LAN, WAN, and VPN.

Bachelor Of Cybersecurity, Cybersecurity

Certificatte 4, Cybersecurity

Equivalent to CompTIA Security+

Associate'S Degree, Computer Software Engineering