Sr Software Engineer - Datapath

F5 • Seattle, WA

5d • Hybrid

About The Position

At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation. Everything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive. Position Summary This position is responsible for the design, development and implementation of complete software components. Designs, develops and maintains high-quality code for complex product components. Manages assigned projects independently and may serve as technical expert for issues associated with specific projects. May assist Principal, Sr. Principal and Architects to detail certain aspects of product design.

Requirements

• Comprehensive understanding of Ethernet switching at both physical and MAC layers.
• Knowledge of IP, UDP & TCP protocols.
• C Code Optimization for x86-64, Cache Tuning, Inline Assembly, PGO/LTO, perf/VTune
• 5+ years Linux systems programming expertise in C or C++, and proficient in at least one high level language such as Python or Go.
• Experience writing code to configure Ethernet switches and network interfaces under Linux.
• Able to debug complex problems that span proprietary F5 software, 3rd party / open source software and physical hardware devices / busses.
• Able to work with and troubleshoot hardware devices down to the register level, including new and unfamiliar devices.
• Able to read board schematics and hardware datasheets.
• Good understanding of Linux kernel and userspace fundamentals and how kernel-mode device drivers operate.
• Comfortable working in a containerized Linux environment using Docker.
• Familiarity with SCM tools such as Perforce and git.
• Demonstrated excellence in written and verbal communications.
• Typically requires a minimum of 8 years of related experience with a Bachelor’s degree; or 6 years and a Master’s degree; or a PhD with 3 years experience; or equivalent experience.
• Board-level bring-up, enumeration validation, Linux/Windows driver interaction, performance benchmarking (bandwidth/latency), and troubleshooting with protocol analyzers
• Integration of PCIe networking cores, DMA engines, BAR mapping, MSI-X interrupts

Responsibilities

• Create and maintain datapath software components on new and existing platforms.
• Provide expert consulting to various engineering groups regarding use, test, and troubleshooting techniques of datapath components.
• Write and debug hardware abstraction libraries used by other teams in F5 to control and configure hardware datapath components.
• Solve issues found with datapath components during bringup and test, down to root cause.
• Fix bugs in F5 software components, work with vendors to get bugs fixed in 3rd party code, or isolate issue to a hardware defect.
• Participates in hiring and onboarding process
• Provides technical mentorship to lower level engineers

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level