Senior Principal Validation Engineer

Astera Labs (NASDAQ: ALAB) provides rack-scale AI infrastructure through purpose-built connectivity solutions. By collaborating with hyperscalers and ecosystem partners, Astera Labs enables organizations to unlock the full potential of modern AI. Astera Labs' Intelligent Connectivity Platform integrates CXL, Ethernet, NVLink, PCIe, and UALink semiconductor-based technologies with the company's COSMOS software suite to unify diverse components into cohesive, flexible systems that deliver end-to-end scale-up, and scale-out connectivity.

The company's custom connectivity solutions business complements its standards-based portfolio, enabling customers to deploy tailored architectures to meet their unique infrastructure requirements. Discover more at

Overview:

As a Senior Principal Validation Engineer, you will join a cutting-edge mixed-signal design team and lead the end-to-end post‑silicon validation and characterization effort. You will own the development and execution of comprehensive validation plans, design and implement test methodologies, and drive hands‑on lab work to verify silicon against specification and performance targets.

You will collaborate closely with design, firmware, and system teams to translate architectural goals into measurable test strategies, build automated test frameworks, and analyze complex analog and digital interactions. Your work will include defining test requirements, creating characterization flows, debugging silicon anomalies, and delivering clear, data‑driven recommendations that influence product direction.

This role requires deep technical expertise in mixed‑signal systems, strong problem‑solving skills, and the ability to mentor engineers across disciplines. You will be expected to champion best practices for validation, optimize test coverage and throughput, and ensure that products meet reliability, yield, and performance objectives before production.

Key Responsibilities:

* Design, develop, and execute validation plans. Own end‑to‑end post‑silicon characterization and validation strategies, translating product requirements into measurable test objectives, pass/fail criteria, and schedules.

* Drive design reviews and specification alignment. Participate in architecture and design‑spec reviews to ensure testability, trace requirements to verification plans, and influence design tradeoffs to meet performance and reliability targets.

* Lead hands‑on test execution and bring‑up. Perform silicon bring‑up, functional and parametric testing, interop checks, and performance benchmarking; rapidly iterate on test flows to accelerate time‑to‑data.

* Build and maintain automation frameworks. Develop scalable test automation, data capture, and analysis pipelines to increase throughput, reproducibility, and coverage across mixed‑signal test benches.

* Debug and optimize system performance. Diagnose complex failures and performance bottlenecks across analog, digital, firmware, and protocol layers; propose and validate corrective actions to improve stability, yield, and power/performance tradeoffs.

* Root‑cause cross‑domain failures. Trace issues to circuit, package, firmware, or protocol interactions using lab measurements, waveform analysis, and system‑level tests; coordinate with design, package, and firmware teams to implement fixes.

* Collaborate with cross‑functional teams. Work closely with mixed‑signal design, firmware, system engineering, and manufacturing to deliver detailed results, root‑cause analyses, optimization recommendations, and formal validation/compliance reports.

* Document findings and improve methodologies. Produce clear debug reports, formal characterization summaries, and recommendations for design/process/test improvements; contribute to failure analysis (FA) best practices and knowledge base.

* Develop test software and platform integrations. Write robust Python test scripts and control interfaces to configure, monitor, and collect status from multiple DSP and hardware platforms, improving firmware stability and automating regression suites.

* Measure and communicate impact. Define key validation metrics, track coverage and defect trends, and present…