Senior Staff Software Engineer, S3

Overview This is an incredible opportunity to be part of a company that has been at the forefront of AI and high-performance data storage innovation for over two decades. DataDirect Networks (DDN) is a global market leader renowned for powering many of the world's most demanding AI data centers, in industries ranging from life sciences and healthcare to financial services, autonomous cars, Government, academia, research and manufacturing. "DDN's A3I solutions are transforming the landscape of AI infrastructure." – IDC “The real differentiator is DDN. I never hesitate to recommend DDN. DDN is the de facto name for AI Storage in high performance environments” - Marc Hamilton, VP, Solutions Architecture & Engineering | NVIDIA DDN is the global leader in AI and multi-cloud data management at scale. Our cutting-edge data intelligence platform is designed to accelerate AI workloads, enabling organizations to extract maximum value from their data. With a proven track record of performance, reliability, and scalability, DDN empowers businesses to tackle the most challenging AI and data‑intensive workloads with confidence. Our success is driven by our unwavering commitment to innovation, customer‑centricity, and a team of passionate professionals who bring their expertise and dedication to every project. This is a chance to make a significant impact at a company that is shaping the future of AI and data management. Our commitment to innovation, customer success, and market leadership makes this an exciting and rewarding role for a driven professional looking to make a lasting impact in the world of AI and data storage. Job Description We are seeking a Senior Staff Software Engineer for the ongoing development of a S3 compliant high performance file system. The candidate must have proven development experience with technical leadership qualities, effective communication skills and is a self-starter. In addition, the candidate must collaborate with other teams and individuals worldwide to quickly learn DDN products/technology/setup & configuration. The candidate must be able to leverage and integrate the monitoring, health‑check and alerting aspects around the product. Key Responsibilities: Maintain, extend, and improve our S3 implementation. Design and develop in C/C++ under tight deadlines with minimal supervision Define and articulate technical designs with the appropriate details Full application development from design to development to testing to deployment Participate in technical reviews throughout the course of development Architecture and troubleshooting of system level components, especially the file system and related storage system components. Undertake research based technical tasks: Define research approach, document results and derive conclusions. Should be able to design a solution based on the research conducted Mentor junior developers Support product deployment and production defect resolution in a timely manner Requirements: Accountable and highly motivated with solid people skills 12+ years’ experience system software development and complex problem resolution. Expert knowledge of the following programming languages: C/C++ Excellent Linux development and deployment skills including but not limited to file system development. Full understanding of OS principles and architecture of Kernel procedures. Broad range of experience with open‑source development toolchain like gcc, gdb, g++, git Experience designing and developing parallel program Good communication skills (verbal and written English). Understanding of Linux File Systems Knowledge of user space IO frameworks such as Fuse, SPDK Nice to have: Strong understanding of RDMA network principles, libfabric, zero‑copy, verbs, etc. Knowledge of performance engineering. Experience working with Scrum Agile Experience of complex network programming, TCP/IP or RDMA. Salary Range for this role: $215,000 - $265,000 DDN Join our dynamic and driven team, where engineering excellence is at the heart of everything we do. We seek individuals who love to challenge themselves and are fueled by curiosity. Here, you'll have the opportunity to work across various areas of the company, thanks to our flat organizational structure that encourages hands‑on involvement and direct contributions to our mission. Leadership is earned by those who take initiative and consistently deliver outstanding results, both in their work ethic and deliverables, making strong prioritization skills essential. Additionally, we value strong communication skills in all our engineers and researchers, as they are crucial for the success of our teams and the company as a whole. Interview Process: After submitting your application, one of our recruiters will review your resume. If your application passes this stage, you will be invited to a 30‑minute interview during which a member of our team will ask some basic questions. If you clear the interview, you will enter the main process, which can consist of up to four interviews in total: Coding assessment: Often in a language of your choice. Systems design: Translate high‑level requirements into a scalable, fault‑tolerant service (depending on role). Real‑time problem‑solving: Demonstrate practical skills in a live problem‑solving session. Meet and greet with the wider team. Our goal is to finish the main process in 2‑3 weeks at most. DataDirect Networks (DDN) is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity, gender expression, transgender, sex stereotyping, sexual orientation, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

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