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Job Description
This is a remote position.
Own the corporate firewall, data center switching and KVM virtualization layer across two redundant data center racks.
You will be the senior escalation point (Tier 3) for our full-time infrastructure engineer.
Your first major deliverable is completing the migration of a FortiGate HA pair from FG-201E to FG-121G.
The infrastructure also runs telecom core workloads (SBC, DRA/STP, PGW, IMS).
Separate specialists support those applications.
Your job is to keep the network, firewall and virtualization layers under them stable.
Responsibilities
Complete the FortiGate HA migration from FG-201E to FG-121G: config conversion, test plan, cutover and rollback plan.
Own the firewall going forward: policy changes, VPNs, security profiles, FortiOS upgrades and periodic rule review.
Own the Cisco Nexus switching fabric in both racks: vPC health, VLAN and port changes, NX-OS upgrades and config backups.
Act as senior escalation (Tier 3) on network, firewall and KVM incidents.
Maintain KVM host standards: networking, storage, backups and capacity across Dell and Lenovo servers.
Keep network diagrams, IP plans and runbooks current.
Coordinate with telecom application specialists when network or firewall changes affect their services.
Join scheduled maintenance windows and a defined on-call rotation for critical outages.
Requirements
Own the corporate firewall, data center switching and KVM virtualization layer across two redundant data center racks.
You will be the senior escalation point (Tier 3) for our full-time infrastructure engineer.




Your first major deliverable is completing the migration of a FortiGate HA pair from FG-201E to FG-121G.
The infrastructure also runs telecom core workloads (SBC, DRA/STP, PGW, IMS).
Separate specialists support those applications.
Your job is to keep the network, firewall and virtualization layers under them stable.
Responsibilities
Complete the FortiGate HA migration from FG-201E to FG-121G: config conversion, test plan, cutover and rollback plan.
Own the firewall going forward: policy changes, VPNs, security profiles, FortiOS upgrades and periodic rule review.
Own the Cisco Nexus switching fabric in both racks: vPC health, VLAN and port changes, NX-OS upgrades and config backups.
Act as senior escalation (Tier 3) on network, firewall and KVM incidents.
Maintain KVM host standards: networking, storage, backups and capacity across Dell and Lenovo servers.
Keep network diagrams, IP plans and runbooks current.
Coordinate with telecom application specialists when network or firewall changes affect their services.
Join scheduled maintenance windows and a defined on-call rotation for critical outages.
Profile We're Looking For
Minimum 7 years in network and infrastructure engineering.
Hands-on production experience in
all three
areas below is required.
Course-only or lab-only exposure does not qualify.
1. Fortinet FortiGate (3+ years in production)
FortiGate HA clusters (FGCP active-passive), including heartbeat links and session sync
Hardware migration between FortiGate models: config conversion and low-downtime cutover
FortiOS upgrades and firmware path planning
Policies, NAT/VIPs, IPsec site-to-site VPN, SSL-VPN or ZTNA, VLAN interfaces, LACP
Security profiles (IPS, application control,



web filtering) and log analysis
2. Cisco Nexus **** / NX-OS (3+ years)
vPC design and troubleshooting, including peer-link and keepalive
Top-of-rack and access-layer design: VLANs, trunks, LACP port-channels, Spanning Tree
10/25/100G optics, breakout cables and server uplink design
Layer 3: SVIs, HSRP/VRRP, static routing, OSPF or BGP
NX-OS upgrades, config backup and change management
3. KVM virtualization on Linux (3+ years in production)
libvirt, virsh, virt-manager or Cockpit: creating, cloning and resizing VMs
Linux host networking: bridges, bonding and VLAN tagging toward Nexus switches
Storage pools on local disk and SAN (iSCSI or FC), LVM and qcow2
VM backups, snapshots, live migration and capacity planning
Out-of-band management: Dell iDRAC, Lenovo XClarity/IMM
General
Fluent English, written and spoken
Nice to Have
FortiManager and FortiAnalyzer
IBM Power9 servers, HMC, VIOS or AIX basics
Lenovo/IBM Storwize-class SAN storage, tape backup
Network automation with Ansible or Python (NX-OS, FortiOS)
Monitoring: Zabbix, PRTG, LibreNMS or Grafana
Exposure to telecom/carrier networks (SIP, Diameter, SS7/SIGTRAN, GTP)
Certifications: Fortinet FCP Network Security (formerly NSE 4) or FCSS; CCNP Data Center or Enterprise; RHCSA/RHCE
100% remote work
from LATAM, with occasional on-site data center visits planned in advance.
Competitive pay in USD
, based on experience, as an independent contractor.
Senior ownership
of a real production environment: firewall, data center fabric and virtualization.
High-impact first project:
lead the FortiGate HA migration from FG-201E to FG-121G.
Telecom core exposure:
work alongside SBC, DRA/STP, PGW and IMS specialists.
Long-term engagement
with a stable client, with room to grow the scope.
Support from Atlantic Talent Services
throughout the process: clear communication, onboarding and a dedicated point of contact.
#J-*****-Ljbffr

📌 Network & Infrastructure Engineer (Bogotá)
🏢 Atlantic Talent Services
📍 Bogotá