Aleksei K.

Networks look like a puzzle to most people. To me, they're just a problem I know how to solve. What I deliver: Network audits & optimization Design & migration - new builds, office expansion, hybrid/cloud Security hardening - ACLs, segmentation, firewall policies, VPNs Troubleshooting escalations - when your team is stuck, I step in. Root causes, not symptoms. Mentoring / on-call - fractional architect for teams without a full-time role Technical depth: Areas and stack: Routing & switching - Multi-vendor. Security - PFSense, OPNSense, Fortinet, Palo Alto, Cisco ASA/FTD, VPNs, segmentation Linux - Any distro, bash scripting, performance tuning Virtualization - Proxmox, VMware, Hyper-V, KVM Automation - Ansible, Terraform Observability - Zabbix, Splunk, SNMP, syslog Background: 30+ years in the field, 7 as a Cisco Networking Academy Manager and Instructor. I've designed large-scale enterprise networks for government, healthcare, and finance — example a maternity center where downtime isn't an option, campus networks for universities, and an airport-wide wireless solution. I've delivered security projects following both international best practices and local regulatory standards. I've trained and worked alongside engineers across Australia, New Zealand, the US, and beyond, and I learn as much from them as they do from me. I work self-paced, lead or go solo, and I'm still adding tools: Proxmox and Splunk a few years ago, Ansible and Terraform last year. This year I'm diving into AI infrastructure — GPU clusters, distributed training, high-throughput data pipelines. I'm also building deeper into Python and scripting to support automation and development from the ground up. How I work: Clear communication, no jargon. English fluent. Documentation-driven: diagrams, runbooks, handoff notes. Available 20–40 hrs/week. Fixed-price or hourly — whatever fits. Ready to solve your network puzzle? Send me an invite.