Member of Technical Staff - Kernel

Team lead for a group of engineers with responsibility for Linux and VMware initiator stack behaviour, as well as Fibre Channel and NIC drivers on a Pure Storage array.

Responsibilities:

• The Kernel and Driver development team is responsible for several areas.
• Working for a team that deals primarily in various storage area network protocols such as Fibre Channel and Ethernet.
• On the initiator side, the team will be responsible for Linux initiator behaviour attached to FlashArray.
• The focus is on NVME (ROCE, FC, TCP/IP) but also includes FC-SCSI (FCP) and iSCSI interfaces.
• This includes software development/fixes for the Linux initiator stack, debugging initiator problems, and creating compatibility documents for Purity.
• For VMware, the focus is on debugging issues with VMware as an initiator, and creating compatibility documentation.
• For FibreChannel and NIC Drivers, the focus is on responsibility for the FC-SCSI driver stack for the storage side and responsibility for NIC drivers on the networking side.
• This includes responsibility for related code, utilities, enhancements supporting RAS, as well as debugging failures found internally and in the field.
• Maintain Linux kernels for internal testing.
• Document supported configurations for customers.
• Responsible for evaluating Linux initiator behaviour and optimising for Pure Storage FlashArray.
• This includes correctness as well as optimising for performance.
• Will contribute bug fixes and enhancements to Linux upstream.
• Analyse and debug difficult Linux bugs to optimise FlashArray attachment.
• Responsible for maintaining Pure's Fibre Channel SCSI (FCP) target driver.
• Maintenance includes driver updates for enhancements, bug fixes and new hardware.
• Resolve difficult Fibre Channel bugs found internally or externally and enhance the resilience of Pure's FC stack.
• This includes projects around multipathing and link health.
• Responsible for maintaining NIC drivers on Pure's storage systems.
• Dealing with middleware C++ modules.

Requirements:

• Strong experience writing device drivers and/or kernel development for Linux/Unix.
• Prefer experience in storage and/or networking drivers.
• Minimum 15+ years of development experience in Linux Systems.
• Experience designing and implementing significant components in storage protocol stacks and storage systems.
• Experience with storage protocols: either SCSI (FC-SCSI or iSCSI/FCP) and/or NVMe fabrics (NVME/ROCE, NVME/TCP or NVME/FC) will be an advantage.
• Experience leading other engineers technically.
• Should be able to mentor more junior engineers and lead other engineers in an overall project.
• Should demonstrate on-time delivery with high quality.
• Experience with performance analysis/optimization for storage systems or protocols.
• Should have VMware experience, with understanding of their initiator stack.
• Experience writing Linux storage device drivers, including some sets of Fibre Channel, NVME, ROCE, block and multipath modules.
• Experience debugging difficult storage attach issues.
• Experience with software development using C and C++, along with Python.
• Experience upstreaming Linux code is preferred.
• Should have experience developing test automation.
• Experience analysing and optimising storage performance.
• Experience writing storage or networking device drivers, preferred in a Linux/Unix environment.
• Demonstrated experience debugging difficult protocol/kernel/system issues.
• Experience with network protocols, including TCP/IP.