# Senior Development Test Engineer — Pre & Post-Silicon Software Test, Validation and Characterization 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/c02346a7-2cce-4e9d-80cc-00076379c912
- Page: https://www.1752.vc/careers/jobs/tylsemi-senior-development-test-engineer-pre-and-post-silicon-software-test-vali/

## About the role

You will own the complete validation lifecycle across a multi-die architecture—covering high-speed die-to-die (UCIe) interconnects, Power Delivery Networks (PDN/PMIC), Platform Management Controllers (PMC), PCIe/CXL subsystems. Additionally, you will apply statistical analysis and machine learning to test data—driving outlier detection, bench-to-ATE correlation, and predictive telemetry signals—without treating ML models as a substitute for true physical root-cause analysis.

## What they're looking for

- Test Plan Ownership: Define development test strategies, coverage targets, content architecture, and strict traceability from architectural requirements to validation evidence
- Bare-Metal & C/Python Test Content: Write low-level C and Python test suites—including bare-metal exercisers, traffic generators, stress patterns, and custom firmware drivers/hooks
- Scalable Automation & HIL: Build robust test frameworks featuring instrument control, automated sequencing, structured result capture, and Hardware-in-the-Loop (HIL) CI/CD integration for continuous validation
- Bench-to-ATE Handoff: Develop lab-to-ATE correlation test suites and drive smooth handoffs to Product & Test Engineering (PTE)
- Own the development test plan: coverage goals, content architecture, and the traceability between a requirement, the test that exercises it, and the evidence it passed
- Injection Frameworks: Build minimally invasive fault-injection hardware/software infrastructure that perturbs target datapaths without destabilizing the test setup itself

Tags: RnD/Engineering