Software Engineer - HRT/Patching

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts.

Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work — every day. We're in this together, sustaining the future of our customers, our company, and our planet.

Join a team of passionate thinkers, innovators, and dreamers — and help us connect people and build communities to create economic opportunity for all.

We are seeking an experienced K8s core engineer to join our dynamic team at eBay in Dublin, Ireland. This role requires a solid understanding of linux kernel, container and kubernetes, proficiency in programming languages such as Go, and Python.

The ideal candidate will have at least 5 years of experience in the field, focusing on kernel development, os upgrading with regular time-manner. Additionally, you will contribute to open-source projects and implement observability practices to monitor and ensure the reliability of our systems.

Responsibilities:

• Develop stable and performance optimized Linux OS for kubernetes platform, build eBay in-house Linux kernel and OS images

• Design, develop, and maintain optimized Linux OS upgrade management system.

• Manage different kinds of runtimes in eBay cloud, including container, kata and virtual machines

• Develop high-performance applications in Go, and Python.

• Contribute to kernel development and optimization for improved system performance.

• Develop the BPF based tools for eBay cloud OS issue diagnostics. Develop BPF/Cilium based network segmentation and mesh system.

• Implement observability tools and practices to monitor system performance and health.

• Collaborate with cross-functional teams to adopt/verify new optimized Linux OS.

• Contribute to open-source projects.

• Stay updated with the latest developments in kernel enhancements, and security practices.

Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.

• At least 5 years of proven experience on Linux, familiar with Linux kernel development, and have knowledge of OS internals, especially the basic components, like process scheduler, memory management, file system and network.

• Strong programming skills in C++, Go, and Python.

• Expertise in using Kubernetes for orchestrating containerized applications to build patching systems.

• Familiar with network protocol, especially TCP/IP stack

• Experience with observability tools and practices.

• Excellent problem-solving and analytical skills.

• Strong communication and teamwork abilities.

Preferred Skills:

• Experience with linux kernel development/triage.

• Experience contributing to open-source projects.

• Certifications in Kernel, networking, Kubernetes, or related fields.

• Understanding Linux kernel tracing technologies or BPF is a plus. 

• Understanding Intel x86 architecture is a plus. 

• Understanding Qemu/KVM/Openvswitch is a plus.

• Experience in a high-traffic, large-scale environment.

• Familiarity with additional programming languages or frameworks.

• Proficiency in Agile development methodologies.

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