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Job Description & How to Apply Below
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 time stamping.
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
Why Join Graviton?
Work in a high-performance, data-driven trading and engineering environment.
Collaborate with some of the brightest minds in quantitative finance and technology.
Competitive compensation, benefits and opportunities for professional growth.
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