DC Network & Connectivity Engineer, APAC

Nscale

Nscale is building a vertically integrated cloud platform purpose-built for AI — enabling immediate, efficient scale for both hyperscalers and enterprise customers. We own the data centres, software, and applications that power today's AI stack using sustainable technology solutions, and we provide the foundation upon which some of the world's leading organisations build and operate their AI workloads. We thrive on a culture of relentless innovation, ownership, and accountability, where every team member takes pride in their work and drives it with excellence and urgency.

As a Nscaler, you'll build trust through openness and transparency, where everyone is inspired to do their best work. Collaboration is key, and we work together swiftly and respectfully, embracing adaptability and resilience in all we do.

About the Role

We are hiring a DC Network & Connectivity Engineer to own the full network stack across Nscale's APAC data centre portfolio — from the server and GPU cluster edge, through the DC fabric, out to WAN edge and external carrier and cloud exchange connectivity.

This is a 100% hands-on engineering and operations role. You will build, configure, test, validate, support, and maintain the network infrastructure that underpins Nscale's AI cloud platform. You are not an architect — but you have the depth and experience to identify when something architected upstream is going to cause a problem downstream, and you will say so.

Nscale runs a consistent network stack across all global data centres, meaning the skills and experience you bring will be directly applicable across our entire portfolio. You will be Singapore-based with regional APAC coverage and work closely with Nscale's global GPU production network and infrastructure teams, as well as external carrier and cloud exchange partners from a technical delivery, validation, and escalation perspective.

This role reports to the APAC Head of Network Infrastructure.

What You'll Be Doing

DC Fabric & Switching

• Deploy, configure, and maintain NVIDIA networking platforms (InfiniBand and/or Spectrum Ethernet) supporting GPU clusters and AI compute workloads.
• Build and operate access switching, east-west DC fabric, OT/IoT switching, and server-edge connectivity.
• Manage out-of-band (OOB) network infrastructure including server management ports, OOB switching, and management VRF segmentation.
• Maintain accurate port inventories, cabling records, and as-built documentation across all DC switching layers.

WAN Edge & Routing

• Terminate and manage lit carrier services (100G, 400G, 800G+) from carrier demarc into Nokia SR1 routers.
• Configure and maintain BGP, VRF, and routing policies to support customer and service segmentation and GPU farm/service pod access.
• Ensure WAN edge configurations align with Nscale's global network standards and service delivery requirements.
• Support product, service, and network segmentation across the full stack — from server management port to WAN edge.

External Connectivity & Cloud Exchange

• Manage technical delivery and validation of carrier circuit handoffs, including coordinating build-ins and demarc acceptance testing.
• Enable and support cloud exchange connectivity via platforms such as Megaport and Equinix Fabric.
• Support customer direct connect and network edge services, including cloud network enablement and cloud exchange integrations.
• Act as the technical counterpart to carriers and connectivity partners for service delivery, validation, and escalation — working alongside Nscale's sourcing and commercial teams.

Physical & Optical Layer

• Manage intra-DC fibre plant, optical patching, and interface connectivity.
• Accept and validate lit service handoffs at the carrier demarc point.
• Maintain accurate physical layer documentation including fibre records, port inventories, and as-built records.

Testing & Validation

• Execute end-to-end circuit and service validation testing at each stage of network build, commissioning, and change activity.
• Use optical test equipment including OTDRs, optical power meters, and optical spectrum analysers for physical layer acceptance and fault diagnosis.
• Conduct network-layer testing using appropriate software tools and platforms to validate routing, segmentation, VRF behaviour, and service reachability.
• Develop and maintain standardised test plans, acceptance criteria, and validation checklists for consistent and repeatable network commissioning.
• Perform regression and smoke testing following maintenance windows, software upgrades, and configuration changes.
• Document all test results, findings, and sign-off records in line with Nscale's operational procedures.

Engineering & Operations

• Own the full lifecycle of network infrastructure — build, configure, test, validate, support, and maintain.
• Monitor network performance, proactively identify and resolve issues, and lead incident resolution across all network layers.
• Maintain and contribute to internal build guides, runbooks, and operational procedures.
• Support capacity management, scheduled maintenance, and infrastructure audits across the APAC DC estate.

About You

• Bachelor's degree or higher in Network Engineering, Telecommunications, Computer Science, Electrical Engineering, or a related discipline — or equivalent hands-on professional experience.
• Minimum 5 years of hands-on experience across DC networking, WAN edge, and connectivity engineering in hyperscale or large-scale data centre environments.
• Proven experience with Nokia SR routing platforms (SR1 or equivalent) including BGP, VRF, and service segmentation configuration.
• Hands-on experience with NVIDIA networking platforms (InfiniBand and/or Spectrum Ethernet) in GPU or HPC environments.
• Strong working knowledge of DC switching, access networking, OOB/management network design, and OT/IoT network segments.
• Experience with cloud exchange platforms (Megaport, Equinix Fabric, or equivalent) and customer direct connect/cloud network enablement.
• Solid understanding of physical and optical layer infrastructure — fibre plant, optical interfaces, demarc acceptance, and test equipment.
• Proficiency with optical and network test equipment including OTDRs, optical power meters, and network diagnostic and monitoring tools.
• Ability to work across the full network stack — from server management port to WAN edge — with equal confidence at each layer.
• Experience working with carriers and connectivity partners in a technical delivery, validation, and escalation capacity.
• Familiarity with network automation and programmability (Ansible, Python, OpenConfig, NETCONF) is beneficial.
• Knowledge of the APAC carrier ecosystem, regional IX landscape, and subsea connectivity is a plus.
• Bilingual skills (Mandarin or Japanese) are advantageous given the regional remit.

What We Can Offer You

At Nscale, you'll find a collaborative, supportive, and innovative environment where your contributions spark real impact. We're building something extraordinary, and we want you at the core.

• Highly competitive compensation package (base + bonus + equity), with performance reviews every 12 months.
• Join one of the fastest-growing AI infrastructure companies — your chance to directly shape how global AI capacity is built and operated across APAC.
• Expect a dynamic progression plan tailored to your ambitions. Grow by leading critical cross-functional infrastructure initiatives — always with our full support.
• Human-First Flexibility: We treat you as humans first. Our flexible workplace trusts Nscalers to deliver, giving you the autonomy to shape your day around life's moments.

Equal Opportunities Statement

We strongly encourage applications from people of colour, the LGBTQ+ community, people with disabilities, neurodivergent people, parents, carers, and people from lower socio-economic backgrounds. If there's anything we can do to accommodate your specific situation, please let us know.

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