Network Engineer

About Graviton: Graviton Research Capital is one of the largest quantitative trading firms emerging out of APAC, with a strong footprint across 40+ global exchanges and a rapidly growing presence across Europe and the USA. We’re privately funded, long-term focused, and deeply invested in building high-performance teams that operate at scale in some of the most competitive markets globally.

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

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.