VPN Engineer

About this role

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Skills you'll use

What you'll do

• Manage and support corporate network infrastructure across multiple locations, including routers, firewalls, switches, wireless access points, VPN gateways, Internet links, and LAN/WAN connectivity.
• Configure and troubleshoot VPN technologies such as IPsec, SSL VPN, site-to-site VPN, remote-access VPN, WireGuard, OpenVPN, and FortiClient/FortiGate VPN, including issues related to authentication, tunnels, routing, DNS, packet loss, performance, split tunnelling, and firewall policies.
• Manage secure connectivity between offices, data centres, cloud environments, and remote users.
• Configure and maintain office LAN infrastructure, including VLANs, trunk/access ports, inter-VLAN routing, DHCP, DNS, NAT, ACLs, static routing, BGP, and OSPF where required.
• Manage multiple ISP connections, including primary and backup Internet links, automatic failover, and monitoring of utilization, latency, jitter, packet loss, and link availability.
• Coordinate with ISPs and telecom providers for new circuits, link failures, bandwidth upgrades, routing issues, packet-loss investigations, and service escalations.
• Manage firewall policies, NAT rules, VPN policies, network objects, and routing, while regularly reviewing and removing unnecessary access.
• Implement network segmentation across user, server, management, guest, and other business networks, while maintaining secure administrative access to network equipment.
• Support MFA and secure authentication for remote VPN users and investigate suspicious network activity and connectivity issues.
• Work with security teams on vulnerability remediation, firewall reviews, and network audits.

Who can apply

• The ideal candidate will have 3+ years of experience with:
• Automate repetitive tasks such as network checks, configuration backups, VPN monitoring, IP validation, and device health checks where possible.
• Strong understanding of TCP/IP, routing and switching, VLANs, NAT, DHCP, DNS, and Internet routing.
• Hands-on knowledge of VPN technologies, including IPsec and SSL VPN, as well as firewalls, access-control policies, and network troubleshooting.
• Good understanding of BGP, OSPF, and VRFs, along with their application in enterprise network environments.
• Knowledge of high availability, load balancing, network security, Wi-Fi, and Linux networking.
• Experience with network automation and technologies such as Python, Bash/Shell scripting, Ansible, REST APIs, and network automation tools is preferred.

Perks & benefits

About Graviton Research Capital LLP

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