Sr. Embedded Software Engineer

Lynx develops software and provides professional services for mission-critical edge systems. The Sr. Embedded Software Engineer works in its professional services division, supporting customer embedded software development and contributing to real-time software design, debugging, product design, and technical proposals.

Responsibilities:

• Working under our professional services division. This allows opportunities to work on a vast array of differing technologies, including Lynx’s key products, many additional customer requirements, and open source software
• Be an embedded Linux expert (kernel, CPU-architecture, security, general device-drivers, and performance optimization) in the customer engineering team and enable customers in doing their embedded SW development
• Design, develop, and refactor real-time software architectures and modular software components
• Reproduce, isolate and debug complex low-level problems that may span interfaces between hardware and software
• Collaborate with the customer and internal teams to always enhance the overall project experience
• Contribute to the overall product design to help customers through various aspects of their product lifecycle
• Working closely with the team to ensure the project deadlines are met and risks/issues are proactively identified and communicated to the customer
• Ensure high quality of our deliverables
• Developing technical proposals to help customers make technical decisions
• Perform additional job duties as assigned

Requirements:

• 3-5+ years of experience building and shipping embedded systems using Linux
• Proficiency in Linux kernel customization, device driver design and development and at least one or more build environments such as Yocto, Buildroot, or Open Embedded
• Experience with performance optimization and advanced troubleshooting at kernel-level
• Experience with memory managed high performance ARM Cortex-A or X86 architectures and SoCs (NXP, Freescale, Intel, AMD, Xilinx, Altera, …)
• Experience with the Linux kernel itself or the kernel of any other operating system with strictly isolated kernel and user spaces
• Proven success with root-cause investigation of bugs related to operating systems, hypervisors, or hardware-level drivers
• Proficiency in the C programming language
• Proficiency with Git at a command line level
• Ability to track and work on multiple projects simultaneously while meeting schedules
• Demonstrated experience of leading software projects while providing technical inputs to unblock supporting teams
• Keen sense of urgency and drive for results
• Ability to work independently with minimal oversight
• Over and above, a deep commitment to your own quality work and a strong desire to help the entire team to succeed
• Must be a US citizen or US person
• Applicant must have proven, extensive depth of knowledge in one or more of the following categories:
• New Linux kernel driver development
• Must be able to read electrical schematics well enough to understand pin configuration procedures and digital logic levels
• Must be able to read integrated circuit data sheets and understand register configuration procedures
• Must understand interrupts and how to appropriately use them to our advantage
• Must understand when and how to appropriately use DMA to our advantage
• Operating System core kernel development experience
• Must have experience with scheduling and timing-related mechanisms and issues in any of the OS kernels as described above
• Must have extensive understanding with context switching, preemption, interrupts, timers, and locking mechanisms
• Must have knowledge of Unix-style file-system data structures (inodes, …)
• Must have knowledge of page tables and memory management
• Must have cursory knowledge of assembly level bootstrapping in either ARM or X86 instruction sets
• Experience working with open source communities to fix bugs and/or add features is a plus
• Experience migrating drivers from one version of the Linux kernel to another is a plus
• Scripting and automation experience with Python, bash or similar languages is a strong plus
• Experience with real-time operating systems is a strong plus
• Experience with optimizing system performance using tools such as profilers and tracers is a plus
• Hypervisor, virtualized device and/or security monitoring experience