Senior Software Engineer - OPX Libfabric Provider

Cornelis Networks delivers the world's highest performance scale-out networking solutions for AI and HPC datacenters. Our differentiated architecture seamlessly integrates hardware, software and system level technologies to maximize the efficiency of GPU, CPU and accelerator-based compute clusters at any scale. Our solutions drive breakthroughs in AI & HPC workloads, empowering our customers to push the boundaries of innovation. Backed by top-tier venture capital and strategic investors, we are committed to innovation, performance and scalability - solving the world's most demanding computational challenges with our next-generation networking solutions.

We are a fast-growing, forward-thinking team of architects, engineers, and business professionals with a proven track record of building successful products and companies. As a global organization, our team spans multiple U.S. states and six countries, and we continue to expand with exceptional talent in onsite, hybrid, and fully remote roles.

Cornelis Networks is hiring software engineers with deep experience writing optimized C code, preferably for fabrics or networks. Your role will be to facilitate the delivery of CN5000, our next-generation HPC fabric, by contributing to our open source libfabric provider, Omni-Path Express (OPX). Ideal candidates will have written C code for high performance, optimal efficiency, and low memory footprint, and will be comfortable contributing to an open source, mission critical project.

Key Responsibilities

• Develop optimized fabric communication services software in C
• Analyze problems and implement solutions based on customer and internal requirements
• Coordinate with vendors and support team on problem resolution, design issues and upgrades
• Create and maintain documentation for host software installations, changes and upgrades
• Collaborate with hardware engineers to co-design next-generation hardware given software requirements
• Evaluate system architecture and make recommendations as required
• Develop and implement standard processes for installation, maintenance and enhancement of host software applications
• Review other team members' pull requests

Preferred Qualifications

• Master's degree, or Ph.D. in Engineering, Computer Science, or related discipline.
• Experience in High Performance Computing (HPC).
• Ability to analyze software scalability issues in multi-node environments (such as cloud or high-throughput computing).
• Experience developing and supporting open-source projects.
• Experience using hardware performance counters to guide development and code tuning.
• Experience developing and estimating using an Agile framework such as Scrum.

Minimum Qualifications

• At least 5 years' post-college experience in C, especially fabric, network, or systems programming in Linux.
• At least 5 years' post-college experience with software development tools and toolchains including gcc and/or clang, git, bug tracking software, etc.
• Familiarity with software performance analysis and performance analysis tools.
• Understanding of network protocols.
• Bachelor's degree in Engineering, Computer Science, or related discipline, or the equivalent in training and experience.

Location: This role fully supports remote work for employees residing within the United States, with the flexibility to travel to our Chesterbrook Corporate Center located in Wayne, PA occasionally for in-person collaboration.

We offer a competitive compensation package that includes equity, cash, and incentives, along with health and retirement benefits. Our dynamic, flexible work environment provides the opportunity to collaborate with some of the most influential names in the semiconductor industry.

At Cornelis Networks your base salary is only one component of your comprehensive total rewards package. Your base pay will be determined by factors such as your skills, qualifications, experience, and location relative to the hiring range for the position. Depending on your role, you may also be eligible for performance-based incentives, including an annual bonus or sales incentives.

In addition to your base pay, you'll have access to a broad range of benefits, including medical, dental, and vision coverage, as well as disability and life insurance, a dependent care flexible spending account, accidental injury insurance, and pet insurance. We also offer generous paid holidays, 401(k) with company match, and Open Time Off (OTO) for regular full-time exempt employees. Other paid time off benefits include sick time, bonding leave, and pregnancy disability leave.

Cornelis Networks does not accept unsolicited resumes from headhunters, recruitment agencies, or fee-based recruitment services. Cornelis Networks is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. We encourage applications from all qualified candidates and will accommodate applicants' needs under the respective laws throughout all stages of the recruitment and selection process.