Sr. HBM PHY Expert, Annapurna Labs

Company: Annapurna Labs Inc.
Location: Austin
Posted on: July 3, 2025

Job Description:

Annapurna Labs (our organization within AWS UC) designs silicon and software that accelerates innovation. Customers choose us to create cloud solutions that solve challenges that were unimaginable a short time ago—even yesterday. Our custom chips, accelerators, and software stacks enable us to take on technical challenges that have never been seen before, and deliver results that help our customers change the world. We are seeking an HBM/DDRx Phy expert with role in the definition, design and validation of AWS next generation ML Chips, Cards and server integration. As a senior member of our platform development team, you will have the outstanding and meaningful opportunity to participate in the design and execution of all HBM, Memories and Serdes topics, with the goal of creating and customized platforms that fit within AWS datacenter’s world leading technology. The HBM lead Engineer will need to independently work with vendors, understand the settings, write/modify tests, debug and collect data in the fleet. Key job responsibilities As a senior member of the team, you will join a group of hardworking engineers to design and implement innovative next generation machine learning chips and servers. In this position, you will make a real impact in a dynamic, technology focused team. Your work will impact the growing field of machine learning. As a senior member of the team, you will collaborate with architects, design teams, software engineers to deliver the next generation ML chip. In this position, you will have the opportunity to be responsible for IP integration, 2.5D design, bring up, Characterization and validation. A day in the life A day in the life of an ASIC Engineer on the AWS Organization team focuses on operational excellence, constructively identifying problems and proposing solutions. You help your team evolve by actively participating in the code review process, design discussions, team planning, and ticket/metric/COE reviews. ASIC Engineers will also mentor and help to develop others and interview for the team. About the team About the team Our team is dedicated to supporting new members. We have a broad mix of experience levels and tenures, and we’re building an environment that celebrates knowledge-sharing and mentorship. Our senior members enjoy one-on-one mentoring and thorough, but kind, code reviews. We care about your career growth and strive to assign projects that help our team members develop your engineering expertise so you feel empowered to take on more complex tasks in the future. Diverse Experiences AWS values diverse experiences. Even if you do not meet all of the qualifications and skills listed in the job description, we encourage candidates to apply. If your career is just starting, hasn’t followed a traditional path, or includes alternative experiences, don’t let it stop you from applying. About AWS Amazon Web Services (AWS) is the world’s most comprehensive and broadly adopted cloud platform. We pioneered cloud computing and never stopped innovating — that’s why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses. Inclusive Team Culture Here at AWS, it’s in our nature to learn and be curious. Our employee-led affinity groups foster a culture of inclusion that empower us to be proud of our differences. Ongoing events and learning experiences, including our Conversations on Race and Ethnicity (CORE) and AmazeCon (gender diversity) conferences, inspire us to never stop embracing our uniqueness. Work/Life Balance We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home, which is why we strive for flexibility as part of our working culture. When we feel supported in the workplace and at home, there’s nothing we can’t achieve in the cloud. Mentorship & Career Growth We’re continuously raising our performance bar as we strive to become Earth’s Best Employer. That’s why you’ll find endless knowledge-sharing, mentorship and other career-advancing resources here to help you develop into a better-rounded professional. BASIC QUALIFICATIONS - BS or MS in EE, ECE or CS - 7 years of experience in Silicon development with -3 years in SOC/IO/Subsystems - Good understanding of DDR/HBM at the PHY and controller level - Good knowledge of DDR/HBM training, timing parameters and/or controller features - Drive the IP Integration and design of silicon and 2.5D packaging - Support the physical design team, review clocking and timing constraints - Drive cross-functional triage effort on complex functional and performance issues - Take the leadership role in post-silicon bring-up of IO and HBM/DRRx stack - Define boot-up initiatization, reset flow, training sequence - Perform system-level debug and root-cause analysis through bring-up, characterization, validation and production phase - Experience Working with 3rd party IP and memory vendors PREFERRED QUALIFICATIONS - Strong Firmware development skills within embedded environments - Good leadership skills and ability to multi-task and thrive in a dynamic environment - Knowledge of HBM, DDRx and related protocols - Good communication skills and interpersonal skills Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status. Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees, supervisors, and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees, supervisors, and staff to ensure exceptional customer service; and follow all federal, state, and local laws and Company policies. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness and professionalism, and safeguard business operations and the Company’s reputation. Pursuant to the Los Angeles County Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner. Our compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from $143,300/year in our lowest geographic market up to $247,600/year in our highest geographic market. Pay is based on a number of factors including market location and may vary depending on job-related knowledge, skills, and experience. Amazon is a total compensation company. Dependent on the position offered, equity, sign-on payments, and other forms of compensation may be provided as part of a total compensation package, in addition to a full range of medical, financial, and/or other benefits. For more information, please visit https://www.aboutamazon.com/workplace/employee-benefits . This position will remain posted until filled. Applicants should apply via our internal or external career site.

Keywords: Annapurna Labs Inc., Cedar Park , Sr. HBM PHY Expert, Annapurna Labs, Engineering , Austin, Texas