Lumilens

Photonic interconnects for AI infrastructure

Network Engineer

Network Engineering & AdministrationConfirmed live in the last 24 hours

Full-timeSingaporeNo salary listedIn-person

About the Job

Requirements

A Bachelor of Engineering or Bachelor of Technology degree in Computer Science, Information Technology, Electronics and Communications Engineering, or a related field.
8–10 years of enterprise network engineering experience.
Experience managing multi-site, multi-country networks.
Experience presenting proposals to senior management.
Ability to communicate verbally and in writing in English.
Experience collaborating across cultures and across APAC and US time zones.
Routing and switching expertise with Cisco, Aruba, or Juniper, including VLANs, STP, BGP, OSPF, and LAG.
Firewall expertise with FortiGate, Palo Alto, or pfSense, including policy management and threat mitigation.
VPN expertise including IPSec, SSL-VPN, site-to-site, and remote-access tunnels.
SD-WAN and SASE expertise with Cato Networks, Meraki, Fortinet, or equivalent.
Enterprise wireless networking expertise, including controller-based and cloud-managed access points.
Cloud networking expertise with Azure VNet, ExpressRoute, and hybrid connectivity.
Microsoft 365 networking integration expertise with Teams, Exchange Online, SharePoint, and Entra ID.
Linux networking expertise with NAT, iptables, routing, and jump host administration.
Network monitoring expertise with PRTG, SolarWinds, Zabbix, or Grafana.
Scripting experience with Python, Bash, or PowerShell for automation and diagnostics.

Responsibilities

Design and maintain LAN, WAN, and SD-WAN across global sites.
Manage site-to-site VPN tunnels across four regions.
Lead SASE/SD-WAN proof of concept and deployment.
Architect NAT Gateway and Linux jump host solutions for secure internet access.
Configure and manage enterprise firewalls, switches, routers, and Wi-Fi.
Administer DNS, DHCP, IPAM, and network monitoring tools.
Implement Zero Trust, network segmentation, and ACL policies.
Support hybrid cloud connectivity across Azure, Microsoft 365, and Entra ID.
Manage SSO integrations and identity-aware network access using SAML/OIDC.
Evaluate vendor requests for quotation with technical and cost-benefit analysis.
Document architecture, runbooks, and change management records.
Collaborate with global teams across IT, HR, Finance, and Operations.

Desired Qualifications

CCNP, Fortinet NSE4+, CompTIA Network+, or Security+ certification.
SASE or ZTNA deployment experience.
NetSuite ERP or SaaS application SSO troubleshooting experience.
CCTV or physical security network integration experience.
Enterprise collaboration platform migration experience, such as Slack to Teams.
Experience segregating lab and production networks in manufacturing environments.
Experience with Entra ID/Azure AD security group and conditional access policies.

ABOUT THE ROLE

Lumilens is looking for a seasoned Network Engineer to design, manage, and secure our global multi-site network spanning India, Thailand, Singapore, and the US. The role demands deep networking expertise, cloud integration experience, and strong communication skills to collaborate across globally distributed teams and stakeholders.

KEY RESPONSIBILITIES

Design & maintain LAN/WAN/SD-WAN across all global sites
Manage site-to-site VPN tunnels across all 4 regions
Lead SASE/SD-WAN POC & deployment
Architect NAT Gateway & Linux jump host solutions for secure internet access
Configure and manage enterprise firewalls, switches, routers & Wi-Fi
Administer DNS, DHCP, IPAM and network monitoring tools
Implement Zero Trust, network segmentation & ACL policies
Support hybrid cloud connectivity (Azure / M365 / Entra ID)
Manage SSO integrations & identity-aware network access (SAML/OIDC)
Evaluate vendor RFQs with technical and cost-benefit analysis
Document architecture, runbooks & change management records
Collaborate with global teams across IT, HR, Finance & Operations

TECHNICAL REQUIREMENTS

Routing & Switching: Cisco / Aruba / Juniper — VLANs, STP, BGP, OSPF, LAG
Firewalls: FortiGate, Palo Alto, pfSense — policy management & threat mitigation
VPN: IPSec, SSL-VPN, site-to-site & remote access tunnels
SD-WAN / SASE: Cato Networks, Meraki, Fortinet or equivalent
Wireless: Enterprise Wi-Fi — controller-based & cloud-managed APs
Cloud Networking: Azure VNet, ExpressRoute, hybrid connectivity
Microsoft 365: Teams, Exchange Online, SharePoint, Entra ID network integration
Linux Networking: NAT, iptables, routing, jump host administration
Monitoring: PRTG, SolarWinds, Zabbix, or Grafana
Scripting: Python / Bash / PowerShell for automation & diagnostics

QUALIFICATIONS

B.E. / B.Tech in CS, IT, ECE or related field
8–10 years of enterprise network engineering experience
Multi-site, multi-country network management
CCNP / Fortinet NSE4+ / CompTIA Network+ or Security+ (preferred)
Strong verbal & written English communication
Experience presenting proposals to senior management
Cross-cultural collaboration across APAC & US time zones

GOOD TO HAVE

SASE / ZTNA deployment experience
NetSuite ERP or SaaS application SSO troubleshooting
CCTV / physical security network integration
Enterprise collaboration platform migration (Slack → Teams)
Lab / production network segregation in manufacturing environments
Entra ID / Azure AD security group and conditional access policies

About the Company

Lumilens

Photonic interconnects for AI infrastructure

Lumilens designs and manufactures optical interconnect products to accelerate AI infrastructure. It provides high-density photonic interconnects—such as high-density pluggable, near-packaged, and co-packaged optics—built with in-house silicon photonics to scale GPU clusters in AI data centers. Its products include 800G and 1.6T optical transceivers for AI networking, and it is pursuing broader integration like Electrical-Optical Interposers through a strategic partnership with POET Technologies. The company differentiates itself through vertical integration, custom robotics-driven manufacturing, and AI-optimized production processes that aim to improve yield and supply chain stability. Lumilens targets hyperscalers and large AI providers, seeking to move interconnect bottlenecks from compute to scalable, efficient data-center networks. Its goal is to enable faster, denser GPU connectivity to support growing AI workloads and models.

Company size: 51-200
Company stage: Series C
Total funding: $839.5M
Headquarters: San Jose, CA
Founded: 2024

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