Senior Infrastructure Engineer (OpenStack Neutron Specialist)

About the role

We're hiring an Infrastructure Engineer (OpenStack Neutron Specialist) to own and evolve the OpenStack networking layer that underpins Nscale's internal and customer-facing cloud services. This role sits within the Infrastructure Engineering team, which is responsible for the design, implementation, operation, and continuous improvement of the infrastructure stack. You'll work closely with compute, storage, platform engineering, support, architecture, and pre-sales teams, serving as a deep subject matter expert across Neutron and associated networking technologies including OVN, Open vSwitch, routing, DHCP, metadata services, tenant isolation, and network automation . This is a high-impact role at the heart of Nscale's cloud platform. You'll help ensure the availability, scalability, performance, and security of the networking layer, act as a 3rd/4th line escalation point for complex issues, and represent real-world operational needs in the upstream OpenStack community to help shape the future of Neutron and related projects.

Responsibilities

• OpenStack Networking Ownership
• Design scalable, resilient, and secure OpenStack networking platforms with a strong focus on Neutron and OVN/OVS .
• Own the architecture and day-to-day operation of virtual networking services, including L2/L3 networking, DHCP, metadata, floating IP, NAT, security groups, and tenant segmentation .
• Ensure OpenStack networking platforms adhere to security, compliance, and operational standards .
• Support upgrades, lifecycle management, and change execution across OpenStack networking services with a strong focus on service continuity.
• Troubleshooting and Operational Excellence
• Troubleshoot complex control plane and data plane issues across OpenStack networking components and the underlying Linux networking stack .
• Act as a 3rd/4th line escalation point for advanced networking incidents.
• Conduct root cause analysis for critical issues and drive permanent fixes.
• Participate in on-call rotations and incident response activities for critical infrastructure services.
• Automation, Performance, and Resilience
• Drive continuous improvement in network automation, provisioning, validation, monitoring, and recovery using infrastructure-as-code and configuration management tools.
• Lead performance tuning, scalability planning, and resilience improvements for network-heavy and latency-sensitive cloud workloads .
• Build and improve automation approaches that strengthen operational consistency and recovery across the platform.
• Contribute specialist input to infrastructure roadmap planning, platform standards, and solution design for customer and internal environments.
• Cross-Functional and Upstream Contribution
• Work closely with compute, storage, and platform engineering teams to ensure effective integration across the broader cloud platform.
• Support pre-sales and solution design activities by providing expert guidance on cloud networking capabilities, constraints, and best practices.
• Contribute to upstream OpenStack networking communities, particularly Neutron and related projects such as OVN , through bug reports, code contributions, design discussions, testing, and reviews where appropriate.
• Track upstream roadmaps, release changes, and community direction to help shape Nscale's networking strategy, upgrade planning, and platform standards.
• Represent Nscale's operational requirements and real-world use cases in upstream discussions to help drive improvements for both the business and the broader community.
• KPIs
• Availability of OpenStack networking services
• Resolution of advanced networking incidents and root cause fixes
• Network automation, provisioning, and recovery improvements
• Scalability and performance of network-heavy, latency-sensitive workloads
• About You
• Strong experience working in large-scale OpenStack environments.
• Strong specialist knowledge of Neutron , including ML2, OVN, Open vSwitch, routing, DHCP, metadata, provider networks, tenant networks, VLAN/VXLAN/Geneve, and security groups .
• Strong Linux systems administration and troubleshooting experience.
• Strong understan

Benefits

Additional Information

About Nscale Nscale is the GPU cloud engineered for AI. We provide cost-effective, high-performance infrastructure for AI start-ups and large enterprise customers. Nscale enables AI-focused companies to achieve superior results by reducing the complexity of AI development. Our GPU cloud bolsters technical capabilities and directly supports strategic business outcomes, including cost management, rapid innovation, and environmental responsibility. 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 an Nscaler, you'll build trust through openness and transparency, where everyone is inspired to do their best work. If you join our team, you'll be contributing to building the technology that powers the future.

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