# Staff Embedded Firmware & System Software Engineer — Platform Controller and SOC Stack at TYLsemi

- Company: TYLsemi
- What the company does: About TYLsemi, Inc. The Opportunity The AI infrastructure market is exploding. Every hyperscaler, every cloud provider, every AI company is building custom silicon. Backed by Matter Venture Partners.
- Company website: https://tylsemi.ai
- Type: Startups
- Level: Senior
- Location: San Jose, CA
- Work setup: On-site
- Pay: $180K to $216K base salary per year (USD)
- Posted: 2026-09-21
- Apply by: 2026-11-05
- Apply: https://ats.rippling.com/tylsemi/jobs/d8bcf869-65af-473f-a73b-e96448c3ebd2
- Page: https://www.1752.vc/careers/jobs/tylsemi-staff-embedded-firmware-and-system-software-engineer-platform-controller/

## About the role

In addition to cash compensation, this position is eligible for equity in the form of stock options, giving you the opportunity to share in the Company’s long-term growth and success.

## What they're looking for

- Design, implement, and maintain Zephyr RTOS firmware for a platform management controllers, including device drivers, subsystem integration, and application-level services
- Write and upstream-quality-review drivers against Zephyr's driver model — devicetree bindings, Kconfig, init levels and priorities, struct device APIs
- Bring up and debug PCIe links on first silicon — LTSSM progression, link training failures, lane reversal and polarity, equalization, speed and width negotiation
- Implement and maintain PCIe host controller and endpoint drivers: enumeration, configuration space, BAR allocation, MSI/MSI-X interrupt routing, AER and error handling, ASPM and link power states
- Configure and validate IOMMU behavior — address translation, DMA remapping, device isolation domains, page-table management, fault reporting and recovery
- Develop system software across the boot and runtime path: bootloader, firmware-to-OS handoff, ACPI or device tree description, kernel drivers, and the DMA and memory-management interfaces they depend on

Tags: RnD/Engineering