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About the Role

CoreWeave is seeking an experienced Senior Network Security Engineer to architect and implement cutting-edge security solutions focused on network security across our data center perimeter and internal networks. You will work in a high-scale environment and ensure our network and services remain secure, resilient, and trustworthy. The ideal candidate is a seasoned security expert with a deep understanding of modern cloud/network architectures and a passion for mentoring others in a security-first culture.

Responsibilities

Design and deploy robust security measures across the network perimeter and internal fabrics to protect CoreWeave’s globally distributed hyperscale infrastructure hosting large-scale AI workloads.
Ensure that all entry points, high-speed interconnects, and cloud services are fortified against unauthorized access and attacks.
Champion a Zero Trust security model across CoreWeave’s network and cloud environments.
Architect solutions that enforce least-privilege access, continuous verification, and micro-segmentation of services.
Establish robust monitoring for network security events and potential breaches across high-density AI cluster networks.
Proactively identify vulnerabilities or indicators of compromise, and coordinate incident response efforts for any network-related security incidents to minimize impact.
Work closely with Networking, Infrastructure, and Software Engineering teams to integrate security best practices into architecture, deployments, and processes.
Provide expert guidance during design and code reviews to ensure new services and features are secure by design.
Secure high-density GPU clusters and ultra-low latency backend fabrics.
Implement security controls to protect customer data in transport.
Drive security initiatives and foster a security-first mindset across the organization.
Mentor junior engineers and peer teams on network security principles, conduct security training sessions, and lead by example in following and enforcing security policies and standards.
Develop, implement, and continually refine security policies and standard operating procedures for a highly scalable, distributed environment.
Regularly review network and cloud security postures, ensuring compliance with industry best practices and adapting policies as the company grows.

Requirements

5–10 years of hands-on experience in network security engineering, with exposure to large-scale cloud or hyperscaler environments.
Proven track record protecting complex, distributed systems at scale.
Deep understanding of network security principles and technologies – including experience mitigating DDoS attacks, securing high-speed data center fabrics, defending against web exploits, and implementing zero trust methodologies.
Strong conceptual and practical knowledge of securing modern cloud and network architectures.
Proficient in network protocols (TCP/IP, DNS, BGP, HTTP/S, etc.), network segmentation, VPNs, and firewall configurations.
Experience securing cloud platforms (AWS, GCP, Azure or custom hyperscale infrastructure) and containerized environments.
Demonstrated ability to lead security initiatives and projects end-to-end.
Experience mentoring engineers or leading security teams, with a talent for instilling a security-first mindset across diverse teams.
Excellent communication and collaboration skills.
Ability to work closely with cross-functional teams (Networking, Infrastructure, DevOps/SRE, Software) to design and implement security solutions that enable the business while protecting critical assets.
Experience in designing, implementing, and reviewing security policies and controls for highly scalable, distributed systems.
Familiarity with industry standards and compliance frameworks (e.g., NIST, ISO 27001, SOC2) and how they apply in a cloud environment.
Prior experience working in a top-tier cloud provider or hyperscale environment is a strong plus (FAANG or similar organization).
Understanding of the unique security challenges at massive scale.
Experience designing zero trust networks, including identity and access management (IAM) systems, single sign-on, multi-factor authentication, and network access control solutions.
Proficiency in scripting or programming (Python, Go, or similar) for automating security tasks, integrating security tools, and handling infrastructure-as-code.
Experience with DevSecOps practices and CI/CD pipeline security is a plus.
Relevant certifications such as CISSP, CCSP, GIAC (GSEC, GCIH, etc.), or cloud security certifications (AWS/Azure Security Specialty) are advantageous, demonstrating a strong foundation in security best practices.
Active involvement in the security community or contributions to open-source security projects.
Up-to-date knowledge of the latest threats, vulnerabilities, and mitigation strategies in network and cloud security.
This position requires access to export controlled information. Applicant must be a U.S. person, eligible to access export controlled information without a required export authorization, or eligible and reasonably likely to obtain the required export authorization.

Skills

Network Security Architecture
Zero Trust Implementation
Security Monitoring
Incident Response
Cross-Functional Collaboration
AI Infrastructure Security
Interconnect Security
Leadership
Mentorship
Policy Development
Network Security Engineering
DDoS Mitigation
Data Center Fabric Security
Web Exploit Defense
Cloud Architecture
Network Architecture
TCP/IP
DNS
BGP
HTTP/S
Network Segmentation
VPNs
Firewall Configurations
Cloud Platform Security (AWS, GCP, Azure)
Containerized Environment Security
Security Initiative Leadership
Security Policy Design
Compliance Frameworks (NIST, ISO 27001, SOC2)
Hyperscaler Environment Security
Identity and Access Management (IAM)
Single Sign-On (SSO)
Multi-Factor Authentication (MFA)
Network Access Control
Scripting (Python, Go)
Automation
Infrastructure-as-Code
DevSecOps
CI/CD Pipeline Security
CISSP
CCSP
GIAC (GSEC, GCIH)
AWS Security Specialty
Azure Security Specialty
Security Community Involvement
Open-Source Security Contributions
Threat Analysis
Vulnerability Management

Location

US-based

Work Type

Full-time

Experience Level

Senior
5-10 years

Salary/Compensations

$182,000 to $242,000

Benefits

Discretionary bonus
Equity awards
Medical insurance (100% paid by CoreWeave)
Dental insurance (100% paid by CoreWeave)
Vision insurance (100% paid by CoreWeave)
Company-paid Life Insurance
Voluntary supplemental life insurance
Short-term disability insurance
Long-term disability insurance
Flexible Spending Account
Health Savings Account
Tuition Reimbursement
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

About the Company

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.

Equal Opportunity

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: careers@coreweave.com.