Senior Security Engineer, PKI & Secrets

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at www.coreweave.com . What You'll Do: The Security Foundations organization at CoreWeave keeps CoreWeave Cloud secure by design, from data centers and GPU fleets to the platform layers powering our customers' AI workloads. The PKI & Secrets team owns the cryptographic infrastructure underpinning the confidentiality, integrity, and authenticity of CoreWeave's data and systems: PKI, secrets management, HSMs, key management, and code signing. We partner with teams across the company to deliver cryptographic services that are secure, reliable, and easy to use at scale. About the Role: As a Senior Security Engineer on the PKI & Secrets team, you will shape how CoreWeave manages cryptographic infrastructure across its global fleet. You'll design and operate PKI hierarchies, secrets management platforms, HSM infrastructure, and key management systems; working hands-on with engineering teams to integrate these capabilities into their services and workflows. In this role, you will: Contribute to the design, implementation, and operation of CoreWeave's PKI infrastructure, including CA hierarchies, issuance policies, certificate lifecycle management, and trust distribution across Kubernetes clusters and bare-metal hosts. Manage and evolve secrets management platforms, including access policies, secret lifecycle governance, and integration patterns using External Secrets Operator and cert-manager. Operate and scale HSM infrastructure, including PKCS#11 integration, key ceremony procedures, and high-availability designs backing our certificate authorities and signing services. Contribute to the design of key management and data encryption solutions for internal and customer-facing use cases, including envelope encryption and KMS API design. Deliver PKI-based solutions supporting workload identity, mutual TLS, and hardware attestation. Maintain and extend code signing infrastructure for firmware images, UEFI binaries, container images, and application binaries. Develop and enforce cryptographic best practices and policies, and contribute to post-quantum cryptography readiness. Who You Are: (5)+ years of experience in security engineering or infrastructure engineering. Strong understanding of PKI concepts including CA hierarchies, certificate profiles, issuance policies, revocation, and trust distribution. Hands-on experience operating HashiCorp Vault or similar secrets management platforms in production. Experience with hardware security modules (HSMs), PKCS#11 interfaces, and key ceremony procedures. Solid understanding of applied cryptography: symmetric and asymmetric algorithms, digital signatures, envelope encryption, and TLS. Proficiency in Go, Python, or similar languages, with the ability to build production tooling and automation. Experience with Kubernetes, including cert-manager, trust-manager, or External Secrets Operator. Demonstrated ability to drive cross-functional initiatives across infrastructure, platform, and product teams. Preferred Experience operating PKI backed by HSMs in a cloud provider or hyperscaler environment. Familiarity with code signing workflows (Authenticode, Cosign/Sigstore, transparency logs, timestamping). Experience with KMS design, including customer-managed keys and multi-tenant key isolation. Understanding of hardware attestation and workload identity (TPM, SPDM, SPIFFE/SPIRE). Exposure to post-quantum cryptography standards and migration planning. Wondering if you're a good fit? We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams, even if you aren't a 100% skill or experience match. If some of this describes you, we'd love to talk. You think deeply about how trust is established in complex distributed systems — and you enjoy making that infrastructure invisible to the teams that depend on it. You're comfortable operating at multiple levels of abstraction, from HSM key ceremonies to Kubernetes operator design and developer experience. You're a pragmatic builder who ships durable solutions in fast-moving environments. Why CoreWeave? At CoreWeave, we work hard, have fun, and move fast! We’re in an exciting stage of hyper-growth that you will not want to miss out on. We’re not afraid of a little chaos, and we’re constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values: Be Curious at Your Core Act Like an Owner Empower Employees Deliver Best-in-Class Client Experiences Achieve More Together We support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and enables the development of innovative solutions to complex problems. As we get set for takeoff, the organization's growth opportunities are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us! The base salary range for this role is $165,000 to $242,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility). What We Offer The range we’ve posted represents the typical compensation range for this role. To determine actual compensation, we review the market rate for each candidate which can include a variety of factors. These include qualifications, experience, interview performance, and location. In addition to a competitive salary, we offer a variety of benefits to support your needs. The benefits below reflect our US-based offerings; for roles in other locations, benefits vary and are shared during the hiring process. These include: Medical, dental, and vision insurance - 100% paid for by CoreWeave Company-paid Life Insurance Voluntary supplemental life insurance Short and long-term disability insurance Flexible Spending Account Health Savings Account Tuition Reimbursement Ability to Participate in Employee Stock Purchase Program (ESPP) Mental Wellness Benefits through Spring Health Family-Forming support provided by Carrot Paid Parental Leave Flexible, full-service childcare support with Kinside 401(k) with a generous employer match Flexible PTO Catered lunch each day in our office and data center locations A casual work environment A work culture focused on innovative disruption California Applicants California Consumer Privacy Act Equal Opportunity & Accommodations CoreWeave is an equal opportunity employer, committed to fostering an inclusive and supportive workplace. All qualified applicants and candidates will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information. As part of this commitment and consistent with the Americans with Disabilities Act (ADA) , CoreWeave will ensure that qualified applicants and candidates with disabilities are provided reasonable accommodations for the hiring process, unless such accommodation would cause an undue hardship. If reasonable accommodation is needed, please contact: [email protected] . Export Control Compliance This position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. CoreWeave may, for legitimate business reasons, decline to pursue any export licensing process.

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