Staff Security Engineer, Product & Platform Security

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 are seeking a Staff Security Engineer, Product and Platform Security to lead security initiatives across Nscale’s products, cloud platforms, hyperscale GPU clusters, and critical infrastructure. You’ll partner closely with engineering, platform, infrastructure, and security teams to identify and reduce risk throughout the product and technology lifecycle. You’ll provide hands-on security expertise across architecture and design reviews, threat modeling, vulnerability assessment, secure development, and incident response. This role will help build and scale product and platform security practices while turning technical findings, researcher insights, and emerging threats into stronger engineering controls, clearer priorities, and measurable improvements to Nscale’s security posture. What you'll be doing Product and Platform Security • Perform vulnerability assessments, application security reviews, and testing of Nscale’s core services, including the Identity service, billing service, external APIs, and the Nscale Console. • Conduct threat modeling and architecture reviews for new products, features, services, and platform changes. • Provide guidance on secure design, coding practices, authentication, authorization, data protection, and infrastructure security. • Develop reusable security standards, patterns, and guardrails that enable teams to build and deploy securely at scale. Vulnerability Management and Remediation • Receive, analyze, and validate vulnerability findings from internal testing, security tooling, external researchers, and other sources. • Assign severity ratings using CVSS and assess technical and business impact to drive prioritization. • Coordinate with engineering, platform, and infrastructure teams to reproduce, validate, and remediate findings. • Create clear remediation roadmaps and track progress toward resolution. • Identify recurring vulnerability patterns and work with engineering teams to address systemic risks and technical debt. Security Coordination and Incident Response • Support incident classification and escalation workflows when vulnerabilities or security issues are discovered in production environments. • Coordinate responsible disclosure timelines and remediation activities with affected stakeholders. • Contribute to root-cause analysis and process improvements following vulnerability discovery or security incidents. • Document findings, remediation steps, and lessons learned to improve product and platform security practices. • Maintain detailed records of findings and resolutions for audit and compliance purposes. Program Measurement and Improvement • Track and report on product and platform security KPIs, including vulnerability trends, remediation timelines, recurrence, and researcher engagement. • Analyze patterns in vulnerability types to identify systemic risks, control gaps, and technical debt. • Provide regular insights to leadership on security risks, emerging threats, researcher feedback, and program effectiveness. • Recommend enhancements to security controls, testing coverage, program scope, and remediation processes based on data. • Benchmark Nscale’s product and platform security practices against industry peers in cloud infrastructure and AI/GPU platforms. KPIs • Reduction in product and platform security risk and recurring vulnerability types • Time to validate, prioritize, and resolve reported vulnerabilities • Security review and threat-modeling coverage for critical products and platform changes • Adoption and effectiveness of secure engineering standards and controls About You • 10+ years of experience in information security, including substantial hands-on experience in product security, application security, platform security, or vulnerability management. • A background in product security, application security, and penetration testing. • Deep technical expertise in threat modeling, security architecture, vulnerability assessment, and secure coding practices. • Experience partnering with software, platform, and infrastructure engineering teams to embed security throughout the development lifecycle. • Strong understanding of CVSS scoring, vulnerability prioritization, and risk quantification. • Experience with responsible disclosure frameworks, bug bounty programs, and coordinating multi-stakeholder vulnerability remediation. • Excellent communication skills, with the ability to explain technical findings to researchers, engineers, leaders, and non-technical stakeholders. • Comfort working in complex, high-stakes environments where security decisions affect product reliability and customer trust. • Experience with GPU/HPC or cloud infrastructure security, including AWS, GCP, or Azure. • Knowledge of Kubernetes, container security, APIs, identity and access management, and hybrid cloud architectures. 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. 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. Salary Range $190,000—$240,000 USD For information on how Nscale handles candidate personal data, please see our Employee & Candidate Privacy Notice: Here.