Senior Engineer, Cilium CNI & Cloud Networking
Share
Job Location:
Sunnyvale, CA - USA
Monthly Salary:
$ 165000 - 242000
Posted on:
30+ days ago
Vacancies:
1 Vacancy
Job Summary
What Youll Do
Network Services Team
The Network Services team builds and operates the foundational networking that powers CoreWeaves Kubernetes platforms at cloud scale. The team is responsible for container networking connectivity and network services that support large-scale GPU-driven workloads across regions and environments. They focus on scalability reliability security and performance while delivering intuitive platforms for internal teams and customers.
About the Role
As a Senior Engineer focused on our Cilium-based CNI you will design build and operate the container networking layer that underpins CoreWeaves Kubernetes platforms. Day to day you will work on evolving our CNI stack to support large high-density GPU clusters with demanding throughput and latency requirements. You will partner closely with Kubernetes Infrastructure and Network Services engineers to ensure the platform is highly available observable and secure. This role spans architecture implementation and operations with ownership from prototype through production. You will also help shape how our networking platform scales for future growth.
Who You Are
- 5 years of experience as a Software Engineer or Systems Engineer working on cloud infrastructure or large-scale distributed systems.
- Hands-on production experience with Cilium CNI (or equivalent advanced CNIs) including cluster configuration and lifecycle management.
- Strong understanding of Ciliums eBPF datapath policy model and load-balancing mechanisms.
- Deep knowledge of cloud networking concepts including VPCs subnets routing security groups/ACLs NAT and ingress/egress architectures.
- Experience designing multi-tenant network architectures with strong isolation and security.
- Solid grounding in TCP/IP dynamic routing (e.g. BGP) ECMP MTU/fragmentation and overlay/underlay networking (VXLAN Geneve encapsulation).
- Experience with network observability and troubleshooting across L3L7.
- Proficiency in at least one systems language such as Golang or C/C.
- Experience working in modern CI/CD environments.
- Experience operating Kubernetes at scale including cluster lifecycle management and debugging networking issues across pods nodes and external services.
- Demonstrated ownership of complex systems end-to-end.
Preferred
- Experience operating cloud-scale network services across tens of thousands of nodes and multiple regions.
- Contributions to Cilium Kubernetes or related open-source networking projects.
- Experience with eBPF development and performance tuning.
- Experience building Kubernetes operators or controllers.
- Familiarity with service meshes multi-cluster networking or cluster mesh solutions.
- Experience in GPU-heavy HPC or other performance-sensitive environments.
Wondering if youre a good fit
We believe in investing in our people and value candidates who bring diverse experiences even if youre not a 100% match on paper. If some of this sounds like you wed love to talk.
- You love solving complex distributed systems and networking challenges at scale.
- Youre curious about cloud-native networking eBPF and Kubernetes internals.
- Youre an expert in building reliable scalable infrastructure that runs in production.
Why CoreWeave
At CoreWeave we work hard have fun and move fast! Were in an exciting stage of hyper-growth that you will not want to miss out on. Were not afraid of a little chaos and were 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
The base salary range for this role is $165000 to $242000. 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 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 weve 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 including:
- 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
Our Workplace
While we prioritize a hybrid work environment remote work may be considered for candidates located more than 30 miles from an office based on role requirements for specialized skill sets. New hires will be invited to attend onboarding at one of our hubs within their first month. Teams also gather quarterly to support collaboration
California Consumer Privacy Act - California applicants only
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: .
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.
Required Experience:
Senior IC
About Company
Discover our GPU cloud, purpose-built for AI with scalable, high-performance infrastructure and 24/7 support. Learn more today.
