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Senior Software Engineer II, SDN Networking

Crusoe is building the World’s Favorite AI-first Cloud infrastructure company. We’re pioneering vertically integrated,  purpose-built AI infrastructure solutions trusted by Fortune 500 companies to power their most advanced AI applications. Crusoe is redefining AI cloud infrastructure, with a mission to align the future of computing with the future of the climate. Our AI platform is recognized as the "gold standard" for reliability and performance. Our data centers are optimized for AI workloads and are powered by clean, renewable energy.

Be part of the AI revolution with sustainable technology at Crusoe. Here, you'll drive meaningful innovation, make a tangible impact, and join a team that’s setting the pace for responsible, transformative cloud infrastructure.

About the Role:

As a Senior Software Engineer II - Software Defined Networking, you will lead the development and execution of our Software Defined Networking strategy. You will work extensively with the Linux Kernel, utilizing technologies such as XDP/EBPF, DPDK, SmartNIC, and DPU/IPU to drive innovation and performance improvements.

A Day In The Life:

  • Develop and execute the roadmap for the Software Defined Networking strategy at Crusoe Cloud.

  • Be highly hands-on, guiding the engineering team through architecture decisions, design processes, design reviews, code reviews, and implementation tasks.

  • Collaborate with the network infrastructure organization to develop industry-leading networking infrastructure.

  • Lead Linux Kernel and driver development, system architecture design, production support, and cross-functional collaboration.

You Will Thrive In This Role If You Have:

  • 4+ years of related experience building and operating at scale in a production environment.

  • Proven experience in system programming with C, C++ and/or Rust.

  • Extensive knowledge of Linux Systems Internals and computer architecture.

  • Expertise in Network Programming and Packet Processing pipelines.

  • Hands-on experience with kernel bypass technologies such as XDP/EBPF, AF_XDP, and DPDK.

  • In-depth understanding of TCP/IP and network accelerators like Mellanox/Nvidia SmartNIC (ConnectX6/7), DPU Bluefield3, and Intel IPU.

  • Familiarity with SR-IOV, vDPA, and scalable functions.

  • Strong background in kernel or embedded development, particularly with the Linux kernel.

  • Experience with Open vSwitch, Openflow, and Open Virtual Networking.

  • Knowledge of professional software engineering practices and best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations.

  • Demonstrated track record of contributions to the open source community (e.g., Open vSwitch/OVS, Open Virtual Networking/OVN, Multus, Cilium).

Preferred Qualifications:

  • Advanced degree in Computer Science, Engineering, or a related field.

  • Proven leadership experience in a technical role.

  • Strong analytical and problem-solving skills.

  • Excellent communication and collaboration skills.

  • Experience with cloud networking platforms (AWS, Azure, GCP) and virtualization technologies (VMware, KVM).

Benefits:

  • Industry competitive pay

  • Restricted Stock Units in a fast growing, well-funded technology company

  • Health insurance package options that include HDHP and PPO, vision, and dental for you and your dependents

  • Employer contributions to HSA accounts

  • Paid Parental Leave

  • Paid life insurance, short-term and long-term disability

  • Teladoc

  • 401(k) with a 100% match up to 4% of salary

  • Generous paid time off and holiday schedule

  • Cell phone reimbursement

  • Tuition reimbursement

  • Subscription to the Calm app

  • MetLife Legal

  • Company paid Commuter FSA benefit of $200 per month

Compensation Range

Compensation will be paid in the range of $180 - $210k. Restricted Stock Units are included in all offers. Compensation to be determined by the applicants knowledge, education, and abilities, as well as internal equity and alignment with market data.

Crusoe is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, disability, genetic information, pregnancy, citizenship, marital status, sex/gender, sexual preference/ orientation, gender identity, age, veteran status, national origin, or any other status protected by law or regulation.

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Average salary estimate

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$180000K
$210000K

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What You Should Know About Senior Software Engineer II, SDN Networking , Crusoe

At Crusoe, we're on a mission to revolutionize cloud infrastructure with our innovative AI-first solutions, and we're looking for a Senior Software Engineer II specializing in Software Defined Networking to join our dynamic team in San Francisco. As a leader in this role, you'll drive the development and execution of our Software Defined Networking strategy, deeply engaging with cutting-edge technologies like XDP/EBPF and DPDK. Picture yourself guiding a talented engineering team through intricate architecture decisions and code reviews, all while collaborating with our network infrastructure organization to create a top-tier networking framework. With over four years of experience in system programming using C, C++, or Rust, you’ll leverage your extensive knowledge of Linux systems and packet processing to spearhead improvements in network performance. At Crusoe, we value sustainability alongside innovation; you'll be part of a forward-thinking company that aligns powerful AI applications with environmentally friendly operations using renewable energy. If you're excited about making a tangible impact and want to be part of the AI revolution with us, this is the perfect opportunity. Get ready to thrive in a role where your analytical skills and collaborative spirit will shine brightly at Crusoe, the world’s favorite AI-first cloud infrastructure company.

Frequently Asked Questions (FAQs) for Senior Software Engineer II, SDN Networking Role at Crusoe
What are the key responsibilities of a Senior Software Engineer II at Crusoe?

As a Senior Software Engineer II at Crusoe, your primary responsibilities include developing and executing the Software Defined Networking (SDN) strategy, leading the engineering team in architecture and design decisions, and collaborating closely with the network infrastructure team. You'll also focus on hands-on development, system architecture design, and driver development to enhance networking capabilities.

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What qualifications are needed for the Senior Software Engineer II position at Crusoe?

To qualify for the Senior Software Engineer II role at Crusoe, you should have at least four years of experience in system programming, particularly with C, C++, or Rust. A strong knowledge of Linux internals, network programming, and hands-on experience with technologies such as XDP, DPDK, and TCP/IP is essential. Candidates with a proven track record in open-source contributions are preferred.

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How does Crusoe support innovation in their cloud infrastructure?

Crusoe fosters innovation in cloud infrastructure by leveraging the latest technologies and maintaining a clean, renewable energy-oriented approach. As a Senior Software Engineer II, you will lead initiatives in Software Defined Networking, utilizing advanced networking protocols and technologies. This commitment to cutting-edge solutions empowers teams to contribute effectively to sustainable AI applications.

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What is the work environment like for a Senior Software Engineer II at Crusoe?

At Crusoe, the work environment for a Senior Software Engineer II is collaborative and dynamic. You'll work alongside talented professionals in an innovative culture that encourages creativity and problem-solving. The team values open communication, allowing you to share insights and contribute to impactful projects that push the boundaries of cloud technology.

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What benefits does Crusoe offer for the Senior Software Engineer II role?

Crusoe offers a comprehensive benefits package for the Senior Software Engineer II role, including competitive pay, restricted stock units, health insurance options, and a generous 401(k) match. Additional perks include paid parental leave, tuition reimbursement, and wellness resources like a Calm app subscription, ensuring you and your dependents are well-supported.

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Common Interview Questions for Senior Software Engineer II, SDN Networking
Can you explain your experience with Linux Kernel and how it relates to software-defined networking?

When answering, provide specific examples of projects or tasks where you utilized Linux Kernel modifications for networking solutions. Speak to any tools you used, like XDP or DPDK, and discuss how your contributions improved network performance or reliability.

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What challenges have you faced while working with packet processing pipelines?

Discuss specific challenges you encountered and how you addressed them. Highlight your problem-solving skills and any tools or methods you employed to optimize packet processing efficiency and reduce latency.

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What strategies do you use for collaboration in cross-functional teams?

Emphasize your communication style and collaboration techniques, such as regular check-ins, feedback loops, and using collaborative tools. Share an example where teamwork was crucial to achieving a successful project outcome.

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How do you stay updated with the latest trends in network programming and technologies?

Discuss your favorite resources, such as tech blogs, conferences, or community forums. Mention how continuous learning and networking with other professionals in the field help you stay informed and inspired.

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What approaches do you take when reviewing code as part of an engineering team?

Describe your code review process, focusing on best practices like readability, efficiency, and adherence to coding standards. Include how you provide constructive feedback and facilitate discussions for improvement.

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Can you detail your experience with network accelerators like Mellanox or Intel?

Share any hands-on experience you've had working with specific hardware devices. Illustrate how these components affected your network implementations and what strategies you utilized to maximize their potential.

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How do you prioritize the development of features in a fast-paced environment?

Explain your approach to prioritization, which may include understanding stakeholder needs, assessing technical feasibility, and using methodologies like Agile. Share examples of how you've successfully executed this balance.

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What are your thoughts on the importance of open-source contributions in your field?

Discuss the benefits of open-source contributions, such as community support and collaboration. Provide your experiences contributing to projects, and how those experiences have shaped your professional growth.

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How familiar are you with cloud platforms like AWS, Azure, or GCP?

Detail your experience with cloud platforms and any specific projects where you utilized these technologies. Discuss how understanding cloud infrastructure improves your capability in Software Defined Networking.

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Describe a time you had to troubleshoot a complex networking issue.

Walk through the situation clearly, including the problem, your troubleshooting steps, and the final resolution. Highlight key skills, such as analytical thinking and technical expertise, that you utilized.

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We’re on a mission to align the future of computation with the future of the climate.

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DATE POSTED
April 19, 2025

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