Position: Network/Network security engineer
Category: Sysadmin
English level: intermediate
Years of experience: 6


Currently, I work as "Senior Network and IT Security Specialist" at a company with about 1500 employees. My main responsibility is managing corporate network and IT security infrastructure, which includes all components of the network, firewalls (NGF, WAF), VOIP system, and endpoint protection. 
During the work in this position I've accomplished the following global task:
- Restructured corporate network, consolidated external connections and VPNs, optimized connection between data centers.
- Implemented IP telephony system (3CX), wireless network, Network Access Control.
- Improved network performance and fault tolerance.
- Restructured network segmentation and access policies.
- Centralized network management, monitoring, logging and access control.
- Implemented network security futures, enhanced network and endpoint security.
- Implemented internal firewall and migrated core network.