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Senior Network Administrator & IT Lead

Fenix One Pte. Ltd.

Role Description

Fenix One is a global high-frequency trading firm operating across multiple asset classes and financial exchanges. We run proprietary, latency-critical infrastructure across colocation facilities across multiple global sites, connected via dedicated leased lines and managed through our own switching and server hardware. Our Singapore headquarters is home to a high-calibre team of 20–30 people.

This is a senior lead role with full ownership of the network domain. Fenix has established depth in server infrastructure and configuration management; your mandate is to bring the same rigour to the network side — building a function defined by transparency, proactive monitoring, and automation.

• Own the global network topology across all colocation sites worldwide and the Singapore office; drive continuous improvement in reliability, latency, and capacity.

• Manage and configure our hardware estate: Arista switches, L1/optical switching infrastructure, Solarflare kernel-bypass NICs, and packet capture systems.

• Build and maintain comprehensive monitoring, alerting, and observability for the network layer — latency, throughput, link state, anomaly detection — with full visibility as a baseline, not a goal.

• Drive network automation: standardise configuration management, deployment pipelines, and change procedures to eliminate manual toil.

• Lead colocation build-outs end-to-end: rack planning, cabling, cross-connects, and remote smart-hands coordination across all regions.

• Manage onboarding of new financial exchange connectivity, interfacing directly with exchange technical teams through requirements, testing, and certification.

• Oversee Singapore office IT: in-office data centre, AD, email, storage, workstations, and desktop support for 20–30 staff.

• Own communication to leadership on network status, risks, and roadmap; champion transparency through dashboards, documented decisions, and structured updates.

• Assess team capacity and lead additional hiring when warranted, end-to-end.

Requirement

• 8+ years of hands-on network engineering, with senior ownership of complex, multi-site global environments.

• Deep routing and switching expertise (BGP, OSPF, VLANs, QoS, spanning tree); proven ability to design, scale, and troubleshoot under pressure.

• Hands-on experience with Arista platforms, L1/optical switching, and packet capture tooling.

• Strong data centre and colocation background: cabling, cross-connects, power, and rack management.

• Demonstrated track record building network monitoring, observability, and automation tooling from the ground up.

• Experience with kernel-bypass / low-latency NIC technologies (Solarflare/OpenOnload or equivalent) in performance-sensitive environments.

• Solid Linux fundamentals; capable of writing automation scripts (Python, Bash, or equivalent).

• Experience onboarding exchange or ISP connectivity and managing vendor relationships across multiple regions.

• Excellent English communication — written and verbal — with ability to produce clear documentation and manage remote smart-hands teams.

Skills