Senior Staff Security Engineer, Identity

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.

About the Role

We’re hiring a Senior Staff Security Engineer, Identity to define and lead Nscale’s identity and access architecture at scale.

This is a high-impact role focused on shaping how identity, authentication, and authorization operate across infrastructure, platform, and internal systems. You’ll set long-term technical direction, design foundational systems, and partner closely with engineering leadership as well as infrastructure, platform, and security teams to embed identity into every layer of the stack.

Your work will directly influence how Nscale secures highly distributed systems, supports safe multi-tenant workloads, and builds scalable identity primitives for both humans and services. This role matters because identity is a foundational part of secure, scalable infrastructure—and you’ll help define how it evolves across the company.

This role will be part of the global CISO organization.

What you'll be doing

Identity strategy and architecture

• Define Nscale’s identity vision and multi-year roadmap in line with platform and infrastructure strategy.
• Set the long-term technical direction for identity, authentication, and authorization across core systems.
• Design foundational identity architecture that can scale across distributed infrastructure environments.

Authentication and federation

• Architect and standardize authentication systems, including SSO and federation patterns.
• Implement identity integrations using protocols such as SAML and OIDC.
• Establish scalable approaches for working with identity providers across internal and platform systems.

Authorization and access control

• Design and evolve authorization frameworks using models such as RBAC, ABAC, and policy-based access control.
• Drive consistent access patterns for complex, distributed systems where security and usability must both scale.
• Standardize policy-as-code and automation approaches for identity and access control enforcement.

Workload identity and zero trust

• Build and scale service-to-service authentication and workload identity patterns, including short-lived credentials and identity-based access.
• Establish zero trust architecture principles and ensure they are enforced consistently across infrastructure.
• Define identity patterns for cloud, Kubernetes, and GPU-based infrastructure environments.
• Lead the design of privileged access management, secrets management, and secure access workflows.

Cross-functional technical leadership

• Partner with infrastructure, platform, and security teams to integrate identity into core systems and services.
• Influence large-scale initiatives across organizational boundaries as a senior technical leader.
• Mentor senior engineers and raise the bar for security engineering across teams.

KPIs

• Multi-year identity roadmap delivery
• Standardization of authentication and federation systems
• Adoption of authorization and policy-as-code frameworks
• Consistent zero trust and workload identity enforcement

About You

• 10–15+ years of experience in security engineering or distributed systems, with deep expertise in identity and access management.
• Proven experience designing and operating large-scale identity systems in cloud-native or infrastructure-heavy environments.
• Strong expertise in authentication and federation protocols, including SAML, OIDC, and OAuth2.
• Deep understanding of authorization models and policy systems such as RBAC, ABAC, and Rego/OPA.
• Experience with cloud IAM and Kubernetes-native identity patterns, including workload identity and service accounts.
• Experience designing service identity systems, mTLS, or identity-based networking in distributed systems.
• Strong architectural judgment with the ability to balance security, usability, and performance.
• Demonstrated ability to operate at a Senior Staff level by setting direction, influencing across org boundaries, and leading large-scale initiatives.
• Nice to have: experience in AI infrastructure, high-performance computing, or GPU-based environments.
• Nice to have: familiarity with multi-tenant system design, zero trust implementations, developer-facing security systems, or identity support for compliance frameworks such as SOC2 and ISO.

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 US 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 planned and deployed. ✨

Expect a dynamic progression plan tailored to your ambitions. Grow by leading critical cross-functional initiatives and shaping capital strategy — 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.

The responsibilities outlined in this job description are not exhaustive and are intended to provide a general overview of the position. The employee may be required to perform additional duties, tasks, and responsibilities as assigned by management, consistent with the skills and qualifications required for the role.

For information on how Nscale handles candidate personal data, please see our Employee & Candidate Privacy Notice: Here.

Salary Range

The range below reflects the base salary for the position. Actual compensation may vary based on job-related factors such as skill set, experience, education, and location. In addition to base salary, this role may be eligible for bonus, equity, and/or commission programs. Nscale may offer a competitive benefits package including medical, dental, vision, flexible paid time off, parental leave, and retirement plan participation.

For information on how Nscale handles candidate personal data, please see our Employee & Candidate Privacy Notice: Here.