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VPN Engineer at Graviton Research Capital LLP. . Location: Gurugram, Haryana, India. Role:.  VPN Engineer. . Location:.  Gurgaon. . Graviton is a privately funded quantitative trading firm striving for excellence in financial markets' research. We are seeking a Network Engineer for our team in Gurgaon. Graviton trades across a multitude of asset classes and trading venues using a gamut of concepts and techniques ranging from time series analysis, filtering, classification, stochastic models, pattern recognition to statistical inference . analysing.  terabytes of data to come up with ideas to identify pricing anomalies in financial markets.. . Responsibilities. . . 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.. . Manage wired and wireless office connectivity, including VLANs, access points, SSIDs, authentication, and guest Wi-Fi.. . Support network connectivity for new office expansions and relocations, including coordination of cabling, patch panels, switch ports, ISP connections, and network equipment installations.. . Maintain accurate documentation for network diagrams, IP addresses, VLANs, VPN tunnels, firewall rules, ISP circuits, device inventory, switch-port mappings, and Wi-Fi infrastructure.. . Maintain SOPs for common networking tasks and incident recovery, and follow established change-management processes for production changes.. . Prepare implementation and rollback plans for major network changes and maintain configuration backups for routers, switches, firewalls, and VPN gateways.. . Basic experience with network automation is preferred, including Python, Bash/Shell scripting, Ansible, REST APIs, and other network automation tools.. . Automate repetitive tasks such as network checks, configuration backups, VPN monitoring, IP validation, and device health checks where possible.. . . Qualifications. . 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.. . . Benefits:. . Our open and casual work culture gives you the space to innovate and deliver. Our cubicle free offices , disdain for bureaucracy and insistence to hire the very best creates a melting pot for great ideas and technology innovations. Everyone on the team is approachable, there is nothing better than working with friends!. . Our perks have you covered.. . . Competitive compensation. . 6 Weeks of paid vacation. . Regular after work parties. . Top of the line health insurance for family . . International team outing. . .