Network and Voice Engineer

Overview

In this role you will design, implement and support resilient enterprise networks and unified communications within a regulated financial services setting. You will ensure high availability, security and performance across LAN/WAN, data centres and cloud networking, working with infrastructure, security and service management teams. You’ll tackle voice and UC solutions to maintain call quality, while driving continuous improvements and risk-aligned changes. This position offers scope to influence network design, security posture and disaster recovery planning in a high-stakes environment.

Responsibilities

• Design, implement and maintain routing and switching (VLANs, STP, QoS, OSPF/BGP) with high-availability patterns
• Support WAN and remote connectivity (MPLS/SD-WAN, VPN, IPSec/SSL) for performance and resilience
• Administer network security controls (firewalls, NAC, segmentation, secure access)
• Engineer voice and unified communications (SIP, VoIP, SBCs, call routing, dial plans, IVR)
• Manage incident, problem and change processes with root cause analysis and post-incident reviews
• Monitor and troubleshoot using tools (SNMP, NetFlow, Wireshark) and document/runbooks
• Collaborate on DR/BCP testing, capacity planning, and lifecycle/patching per risk/compliance
• Contribute to automation and configuration management (scripts, templates, IAC)

Key requirements

• Strong hands-on experience in enterprise networks with high-availability and low-latency requirements
• Cisco and/or Juniper routing/switching expertise; solid TCP/IP/DNS/DHCP knowledge
• Experience with voice technologies (SIP, RTP, codecs, QoS for voice) and enterprise UC platforms
• Firewalls and network security principles; familiarity with IDS/IPS and secure access patterns
• Experience with cloud networking (Azure/AWS) including VNET/VPC, routing, VPN/ExpressRoute/Direct Connect
• Strong troubleshooting and clear communication with technical and non-technical stakeholders
• Experience in regulated environments (financial services) with audit/change control/risk awareness
• Relevant certifications such as CCNP (Enterprise/Collaboration) or JNCIP; ITIL knowledge

• Clear communication
• Collaboration with cross-functional teams
• Analytical problem-solving
• Cisco/Juniper routing and switching
• SIP/VoIP and QoS for voice
• SBCs and call routing

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