Network Engineer

Role: Network 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.

Key Responsibilities

• Design, deploy, operate, and troubleshoot low-latency network infrastructure used by trading firms.
• Manage connectivity to global stock exchanges, brokers, market-data providers, and ISPs.
• Build and maintain colocation infrastructure including routers, switches, Layer-1 devices (added advantage), structured cabling and cross connects.
• Configure and support Cisco Nexus, Arista and similar platform devices.
• Design and troubleshoot Layer 2 and Layer 3 networks including: VLANs, VRFs, BGP, OSPF, Static routing, PIM, IGMP, Multicast, SSM, ACLs and QoS.
• Troubleshoot packet loss, multicast issues, duplicate packets, IGMP/PIM and multicast/BGP routing.
• Monitor and optimize latency, jitter, packet loss, interface errors, congestion, and network performance.
• Work with ultra-low-latency technologies including: Cut-through switching, Layer-1 switches, FPGA-based network devices, Kernel-bypass networking, ExaNIC/Solarflare NICs, Hardware timestamping.
• Configure and troubleshoot PTP and clock synchronization infrastructure.
• Perform server and network equipment installation in exchange and third-party data centres.
• Manage rack layout, patching, cable optimization, optics, DACs, cross-connects, and inventory.
• Coordinate network changes with exchanges, telecom providers, brokers, vendors, and data-centre teams.
• Plan and execute production changes during approved maintenance windows.
• Perform pre-change validation, change implementation, post-change testing, rollback planning, and documentation.
• Maintain network diagrams, IP-address inventory, rack documentation, port mappings, circuit information, and SOPs.
• Automate repetitive operational and validation tasks using Python, Bash, Ansible, or similar tools.
• Perform root-cause analysis for network incidents and implement permanent corrective actions.
• Maintain high availability and redundancy for critical trading infrastructure.

Qualifications

The ideal candidate will have 3+ years of experience with

• Strong hands-on knowledge of TCP/IP networking, Ethernet, ARP, VLAN, STP, LACP, VRF
• Knowledge of routing protocols including static routing, BGP and OSPF.
• Experience with multicast configuration IGMPv2/IGMPv3, PIM-SM
• Knowledge of QoS, ACLs, NAT
• Knowledge of network design, network operation or network automation and Network troubleshooting
• Good understanding of TCP and UDP behaviour, Market-data multicast, Exchange connectivity, Low-latency network architecture
• Understanding of Optical networking, SFP/SFP+/QSFP optics, Single-mode and multimode fibre
• Knowledge of datacenter installation and cabling standards, DAC/AOC cabling, PTP

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!

• Competitive compensation
• 6 Weeks of paid vacation
• Regular after work parties
• Top of the line health insurance for family