Senior Network Administrator & IT Lead

Fenix One Asia Pte. Ltd.; Singapore; On-site; SGD 180,000 - 320,000; Full time

Benefits offered by this job

Full relocation package to Singapore

Health coverage

High autonomy

Competitive compensation

Job summary

Fenix One Asia Pte. Ltd. invites a senior network lead to own the global network topology across all colocation sites, including the Singapore office.

You will drive reliability, latency improvements, and capacity planning while coordinating with exchange teams and internal stakeholders. You will manage Arista hardware, L1/optical switching, and Solarflare NICs, building observability, automation, and end-to-end colocation deliveries in a high-frequency trading environment.

Qualifications

• 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).
• 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.
• Experience building network monitoring, observability, and automation tooling from the ground up.
• Experience with kernel-bypass / low-latency NIC technologies (Solarflare/OpenOnload) in performance-sensitive environments.
• Solid Linux fundamentals; able to write automation scripts (Python, Bash).
• Experience onboarding exchange or ISP connectivity and managing vendor relationships.
• Excellent English communication with ability to produce clear documentation.

Responsibilities

• Own the global network topology across all colocation sites worldwide and the Singapore office; drive reliability, latency, and capacity improvements.
• Manage and configure hardware estate: Arista switches, L1/optical switching, Solarflare NICs, and packet capture systems.
• Build and maintain monitoring, alerting, and observability for the network layer with full visibility as baseline.
• Drive network automation: standardise configuration management, deployment pipelines, and change procedures.
• Lead colocation build-outs end-to-end: rack planning, cabling, cross-connects, and remote smart-hands coordination.
• Manage onboarding of new exchange connectivity, interfacing with exchange technical teams through requirements, testing, and certification.
• Oversee Singapore office IT: data centre, AD, email, storage, workstations, and desktop support for 20–30 staff.
• Communicate network status, risks, and roadmap to leadership; champion transparency with dashboards and documented decisions.
• Assess team capacity and lead additional hiring when warranted, end-to-end.

Skills

Senior network engineering

BGP

OSPF

VLANs

QoS

Arista

Linux

Scripting (Python/Bash)

Automation tooling

Exchange connectivity

Tools

Arista switches

L1/optical switching

Solarflare OpenOnload

Packet capture tooling

Job description

About Fenix One

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.

Key Responsibilities

• 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.

Requirements

• 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.

Highly Desirable

• Background in HFT, algorithmic trading, or other latency-critical financial infrastructure.
• Exposure to financial exchange co-location agreements and direct market access onboarding.
• Experience hiring and developing junior engineers.
• CCNP, CCIE, or equivalent certification.

Who You Are

• Proactive, not reactive - you surface problems and proposals before you're asked.
• You build for visibility: monitoring and documentation are how you demonstrate ownership.
• You default to automation; manual processes are temporary.
• You communicate clearly and early, especially about risk and capacity.
• You thrive with high ownership in a lean, technically demanding environment.

What We Offer

• Competitive senior compensation commensurate with experience.
• Full relocation package to Singapore.
• High autonomy - clear ownership, real decisions.
• Access to specialised, cutting-edge infrastructure across global financial markets.
• Competitive benefits including health coverage.