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About the job you’re considering

The K3s Kubernetes Network developing Engineer will focus on networking for K3s clusters deployed across hybrid architectures (x86, ARM, accelerators). The role involves designing, implementing, and maintaining cluster networking that integrates with external systems. This includes writing Kubernetes controllers, managing IP address allocation, configuring VLANs outside of K3s and exposing them inside, extending networking with Multus CNI, and ensuring clusters support advanced CNI (Cilium/Calico) and bare-metal load balancing. The engineer ensures application and infrastructure networking is reliable, scalable, and secure

Your Role

• Architect and implement networking for hybrid K3s clusters.

• Configure and optimize CNIs (Multus, Cilium, Calico) for multi-network scenarios.

• Enable VLAN-backed networks, SR-IOV, and multi-interface workloads.

• Deploy and manage bare-metal load balancers (MetalLB, BGP).

• Build custom Kubernetes controllers/operators in Go for declarative networking.

• Automate IPAM, DNS integration, and network provisioning across hybrid environments.

• Ensure seamless GitOps integration with CRDs and controllers.

• Implement network policies, encryption, and observability (Cilium Hubble, Prometheus).

• Collaborate with DevOps, SRE, and hardware teams to align with platform needs.

• Document architecture, runbooks, and provide internal knowledge transfer.

Your skills and experience

• Deep expertise in Kubernetes/K3s networking and CNIs.

• Hands-on experience with Multus, Cilium, Calico, and MetalLB.

• Strong Go development skills (Kubebuilder, Operator SDK).

• Proficiency in Linux networking (netlink, iproute2, eBPF).

• Experience with IPAM, VLAN bridging, DHCP/DNS integration.

• Security-first mindset: RBAC, network policies, encryption.

• Familiarity with service mesh (Istio, Linkerd) and high-performance networking (SR-IOV, DPDK).

• Bonus: Contributions to Kubernetes networking or CNI projects.

Life at Capgemini

Capgemini supports all aspects of your well-being throughout the changing stages of your life and career. For eligible employees, we offer:

• Flexible work

• Healthcare including dental, vision, mental health, and well-being programs

• Financial well-being programs such as 401(k) and Employee Share Ownership Plan

• Paid time off and paid holidays

• Paid parental leave

• Family building benefits like adoption assistance, surrogacy, and cryopreservation

• Social well-being benefits like subsidized back-up child/elder care and tutoring

• Mentoring, coaching and learning programs

• Employee Resource Groups

• Disaster Relief

About Capgemini Engineering

World leader in engineering and R&D services, Capgemini Engineering combines its broad industry knowledge and cutting-edge technologies in digital and software to support the convergence of the physical and digital worlds. Coupled with the capabilities of the rest of the Group, it helps clients to accelerate their journey towards Intelligent Industry. Capgemini Engineering has 65,000 engineer and scientist team members in over 30 countries across sectors including Aeronautics, Space, Defense, Naval, Automotive, Rail, Infrastructure & Transportation, Energy, Utilities &

Chemicals, Life Sciences, Communications, Semiconductor & Electronics, Industrial & Consumer, Software & Internet.

Capgemini Engineering is an integral part of the Capgemini Group, a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2024 global revenues of €22.1 billion.

Get the future you want | www.capgemini.com

Disclaimer

Capgemini is an Equal Opportunity Employer encouraging inclusion in the workplace. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law.

This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodations do not pose an undue hardship.

Capgemini is committed to providing reasonable accommodations during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact.

Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process.

Click the following link for more information on your rights as an Applicant http://www.capgemini.com/resources/equal-employment-opportunity-is-the-law

Applicants for employment in the US must have valid work authorization that does not now and/or will not in the future require sponsorship of a visa for employment authorization in the US by Capgemini.

**Job:** _Developer_

**Organization:** _ERD PPL US_

**Title:** _Senior Connectivity & NW Engineer - K3s Network Engineer_

**Location:** _OR-Portland_

**Requisition ID:** _081867_