Join our Post-Silicon Validation team to validate the critical high-speed interconnects - HBM, PCIe, UCIe, and chip-to-chip links - that enable massive bandwidth and scaling in AWS's next-generation ML accelerators. You'll ensure link integrity, performance, and reliability at the electrical and protocol layers across the full product lifecycle, from first silicon through production deployment in AWS data centers.

You'll work in a fast-paced, startup-like environment alongside some of the brightest minds in the industry on next generation, internet-scale technology that directly impacts how customers use Machine Learning acceleration. Your expertise will be instrumental in validating the I/O technologies that enable our custom silicon to scale beyond what was previously possible.

Key job responsibilities

Validate high-speed interfaces (HBM, PCIe, UCIe, custom SerDes) end-to-end from PHY training through sustained traffic

Perform electrical characterization: eye diagrams, jitter analysis, voltage margin, and equalization tuning

Execute protocol-level compliance testing and interoperability validation against industry specifications

Stress-test links across PVT (Process, Voltage, Temperature) corners and aging conditions

Debug link training failures, bit errors, and performance degradation using lab instrumentation and silicon debug features

Collaborate with PHY design teams on equalization optimization, margin improvement, and silicon feedback

A day in the life

Your primary focus is making sure the high-speed links on our AI chips actually work - reliably, at speed, and across all conditions. You'll spend time in the lab: scoping eye diagrams, tracking down why a link dropped during a thermal sweep, or tuning equalization to squeeze out extra margin. Beyond the hands-on debug, you'll also develop compliance test suites and build the characterization data that drives production readiness decisions. When things get weird, you're the one who figures out why.

BASIC QUALIFICATIONS

- 3+ years of non-internship professional software development experience

- 2+ years of non-internship design or architecture (design patterns, reliability and scaling) of new and existing systems experience

- Experience with RF measurement equipment, including: power meters, spectrum analyzers, vector signal generators, network analyzers, oscilloscopes

- Bachelor's degree in Computer Science, Computer Engineering, or Electrical Engineering, or experience in test setup automation using MATLAB, Python, or Pearl

- 3+ years of hands-on experience validating or characterizing at least one high-speed interface technology (HBM, PCIe, DDR, SerDes, or UCIe)

- Proficiency with signal integrity measurement techniques: eye diagram analysis, jitter decomposition, and voltage/timing margin assessment

- Familiarity with at least one interface specification standard (JEDEC HBM/DDR, PCI-SIG PCIe, or UCIe consortium)

PREFERRED QUALIFICATIONS

- 3+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience

- Experience with HBM PHY training sequences and characterization

- Knowledge of forward error correction (FEC) and link reliability metrics (BER, MTBF)

- PCB and package-level signal integrity awareness (S-parameters, channel modeling)

- Experience with multi-die or chiplet architectures and die-to-die interconnect validation

- Familiarity with equalization techniques (CTLE, DFE, FFE) and adaptive tuning

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at https://amazon.jobs/en/benefits.

USA, TX, Austin - 143,700.00 - 194,400.00 USD annually