Network & Communications Administrator

Island Finance LLC

About The Position

Responsible for the operational phase of the institution’s voice and data communications, ensuring high availability, performance, and security across all branches, departmental offices, and cloud services. Operates and optimizes LAN/WAN/SD‑WAN, enterprise Wi‑Fi, Internet/MPLS/LTE links, VPN (site‑to‑site and remote access), IP telephony/SIP/UC, and secure connectivity with cloud providers (OCI and AWS). Ensures policy compliance, audit support, and continuous improvement under ITIL practices and cybersecurity best practices.

Requirements

Bachelor’s degree in engineering (Computer/Telecommunications/Electrical) or Computer Science, or equivalent experience.
3+ years administering multi‑site networks and communications in regulated environments (financial, telecom, healthcare, or similar).
Proficient knowledge of communication and network concepts and protocols.
Knowledge of equipment used in networks and monitoring tools.
Fortinet NSE 4/7 or higher; Cisco CCNA/CCNP; CompTIA Network+/Security+; ITIL v4 Foundation.
Cloud certifications with networking emphasis: AWS (Advanced Networking/SAA), OCI (Networking/Architecture).
Network Protocols & Topologies: Knowledge of core for designing and troubleshooting network architecture.
Hardware Configuration & Management: Experience with major vendor equipment, including routers, switches, firewalls, and wireless access points, is a must.
Network Security: Knowledge and experience in implementing and managing robust security measures, including firewalls, VPNs, intrusion detection/prevention systems (IDS/IPS), access controls, and vulnerability management.
Virtualization & Cloud Networking: Strong understanding of virtualization technologies and experience with cloud platforms like AWS or Azure to manage scalable and hybrid network environments.
Voice and Data Communications: Knowledge of unified communication systems, including Voice over IP (VoIP), SIP trunks, and video conferencing solutions, is often required.
Operating Systems: Experience in managing servers on various operating systems, including Windows Server and Linux, for effective network management.
Bilingual (Spanish and English).
Customer-focused and service-oriented.
Strong verbal, written, and negotiation skills to retain the existing customer base.
Experience in routing/switching (BGP/OSPF/STP/VLAN), firewalls/IPS (preferably Fortinet/FortiGate), VPN (IPsec/SSL), SD‑WAN, enterprise Wi‑Fi, and VoIP/SIP/SBC/QoS.
Hands‑on experience with cloud connectivity (OCI and AWS: VPC/VNet, VPNs, routing, security, dedicated links).
Proficiency with monitoring tools (SNMP, Syslog, NetFlow/IPFIX, NPM/NTA) and ITIL processes (changes, incidents, problems).
Clear documentation (HLD/LLD), analysis, troubleshooting, and effective communication skills (Spanish/English).
Availability for on‑call duties, off‑hours changes, and site visits; valid driver’s license.

Responsibilities

Network & Communication Specialist (including Fortinet and SD‑WAN)
Routing and switching (BGP/OSPF, VLAN, QoS), enterprise Wi‑Fi, and communications links (Internet/MPLS/LTE).
Responsible for operational functions for the Fortinet firewalls/IPS (FortiGate), security policies and profiles, and management/analytics platforms (FortiManager/FortiAnalyzer).
Monitor and manage load balancers, Wi‑Fi controllers, ADC, and segmentation (VLANs, NAC/micro‑segmentation).
Maintain core services: DNS, DHCP, NTP, IPAM, and IP addressing/segment control.
Cloud Connectivity & VPN (OCI and AWS)
Support the design, operation, and optimization of secure connectivity with OCI and AWS via IPsec VPN, SSL VPN, and, when applicable, dedicated links (e.g. FastConnect/Direct Connect).
Ensure routing, security, and resilience (HA, failover, periodic switchover tests) for interconnection with clouds and data centers.
IP Telephony / SIP / Collaboration
Support the administrator in the VoIP/UC platforms, SIP trunks, SBC, and call routing; enforce QoS to guarantee voice quality (jitter, latency, loss, MOS).
Coordinate integrations with contact center/IVR and collaboration services; ensure recording and retention per policy
Monitoring, Operations & Incident Response
Monitor performance and capacity with NPM/NTA/SNMP/NetFlow/Syslog; set proactive thresholds and alerts.
Handle incidents (Tier II/III), execute root‑cause analysis and remediation plans, reducing MTTR and recurrence.
Manage patching, changes, and releases following formal change controls (ITIL) and maintenance windows.
Security, Compliance & Audits
Apply network security controls (hardening, segmentation, privileged access, secure VPNs, lists/objects) and maintain audit evidence.
Support internal/external and regulatory audits, address findings, and implement corrective action plans.
Ensure adherence to corporate security policies and financial‑sector regulations.
Business Continuity & DR/BCP
Support the Administration in the implementation and testing of HA, link redundancy, alternate routes, and failover mechanisms for critical services.
Participate in DR/BCP exercises, validating secure connectivity to critical services in OCI and AWS.
Vendor & Cost Management
Support the management of carriers/ISPs, OEMs (incl. Fortinet), and MSPs: contracts, SLAs, escalations, billing, and reconciliations.
Support as required in proposal evaluations (RFP/RFQ) and recommend cost‑effective modernizations and optimizations (licenses, links, equipment).
Documentation & Continuous Improvement (BAU)
Maintain up‑to‑date HLD/LLD diagrams, inventory, and operating procedures.
Review and present proposal for updates, implement updates, improvements, optimizations, and new controls as part of BAU.
Provide technical training to the Service Desk and related teams.