Principal Engineer, Platform & Infrastructure Security. Job in Seattle LilyLifestyle Jobs

About NscaleNscale is the GPU cloud engineered for AI. We provide cost‑effective, high‑performance infrastructure for AI start‑ups and large enterprise customers, enabling AI‑focused companies to achieve superior results by reducing the complexity of AI development. Our GPU cloud boosts 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. About the Role Nscale is seeking a Principal Engineer, Platform&Infrastructure Security to serve as a senior individual contributor responsible for securing and hardening our global AI infrastructure. Reporting directly to the CISO, this is a deeply technical, hands‑on engineering role. You will identify systemic risk across distributed systems, design durable security architectures, and write production‑grade code to strengthen the foundation of our GPU cloud. You will partner closely with Platform Engineering, Networking, the CTO organization, and Product teams to embed security directly into infrastructure design and deployment. What You'll be Doing Lead security architecture and engineering initiatives across compute, networking, storage, and control plane systems. Identify architectural and systemic risks in distributed, multi‑tenant infrastructure. Design and implement scalable security controls through code and automation. Harden Kubernetes, virtualization layers, GPU workloads, and platform services. Strengthen identity, authentication, authorization, and secrets management systems. Partner with Networking teams on secure segmentation and traffic isolation strategies. Embed automated security validation and guardrails into CI/CD pipelines. Conduct deep technical design reviews and threat modeling exercises. Mentor and develop junior security engineers, raising the technical bar across the team. Partner with the CISO to shape long‑term platform security strategy. Represent Nscale externally as a subject‑matter expert in infrastructure and cloud security. Required Qualifications 10+ years of hands‑on security engineering experience in cloud, hyperscale infrastructure, or large distributed systems. Strong software engineering background with proficiency in Go, Python, Rust, or similar languages. Deep expertise in Linux systems internals, Kubernetes and container security, Infrastructure‑as‑Code (Terraform or equivalent), cloud‑native architectures, network security and segmentation, and identity and access management systems. Proven experience securing multi‑tenant environments at scale. Demonstrated ability to identify architectural risk and drive engineering‑led remediation. Experience mentoring engineers and contributing to hiring and team building. Nice to Have Experience in GPU, HPC, or AI infrastructure environments. Background in adversarial security research or red teaming. Public speaking, industry contributions, or open‑source security work. Experience at a hyper‑scale cloud provider or high‑growth infrastructure company. Who You Are A builder who writes code and ships secure systems. A systems thinker who understands how complex infrastructure can be fortified and who can handle challenging technical decisions where risk exists. Influential without relying on authority. Recognized as an industry SME in platform and infrastructure security. What We Can Offer You Highly competitive package (base+equity) with reviews every 12 months. Our remote‑first, people‑first culture gives you autonomy to shape your day around life’s moments, while you collaborate with brilliant minds on cutting‑edge AI. 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. #J-18808-Ljbffr United Cerebral Palsy of Georgia