Sr Software Development Engineer - BIOS/UEFI, AWS Hardware Engineering, Firmware Development

The AWS BIOS Engineering team creates and maintains custom firmware solutions for Amazon's innovative server platforms. Our BIOS/UEFI implementations are industry-leading in security, performance, and operational excellence, and are critical to the success of AWS's massive-scale infrastructure that millions of customers rely on daily. Our BIOS engineers solve complex firmware challenges and build robust, secure bootloader solutions that enable AWS to maintain its competitive edge in cloud computing.

The ideal candidate will be an innovative self-starter with deep expertise in UEFI/BIOS development. You will be a firmware specialist with comprehensive knowledge of x86 and ARM64 architecture, secure boot implementations, and low-level system programming. You will gain intimate understanding of AWS's custom server firmware stack and analyze it for both current needs and future scalability. You will leverage your system-level expertise to find optimal solutions to complex boot-time challenges. You will collaborate with internal teams (hardware, validation, security) and external partners (silicon vendors, ODMs) while leading critical firmware development efforts.

What you will do:
Design and implement custom UEFI/BIOS features for AWS server platforms
Debug complex firmware issues using tools like ITP, ScanTool, and JTAG
Optimize boot time performance and platform initialization sequences
Implement secure boot mechanisms and firmware security features
Develop and maintain Power-On Self Test (POST) code
Create firmware update mechanisms and recovery solutions
Work with hardware teams on board bring-up and platform validation

Why it matters:
AWS's custom server platforms require specialized firmware solutions that maximize performance, security, and reliability at scale. Your BIOS developments will directly impact millions of servers running in AWS data centers worldwide, requiring unique optimizations that benefit our cloud infrastructure and customers.

Why you will love it:
Work on server platforms and next-generation silicon
Direct impact on AWS infrastructure efficiency and security
Ownership of critical firmware components from design through deployment
Collaboration with industry leaders in cloud computing
Access to advanced hardware labs and debug equipment
Opportunity to influence future server architecture decisions
Work with a team of experienced firmware engineers
Join our diverse engineering organization where you'll help deliver the firmware foundation for AWS's global infrastructure. You'll experience an inclusive culture that welcomes innovative ideas and empowers you to own complex technical challenges through to completion.

Key job responsibilities
UEFI/BIOS Development:
- Develop and maintain UEFI/BIOS code for server platforms
- Implement ACPI tables and power management features
- Create and maintain Platform Reference Code (PRC)
- Debug complex firmware issues using ITP, and JTAG tools

ODM/OEM Collaboration:
- Work directly with ODM partners
- Coordinate BIOS development efforts
- Review and validate ODM-provided BIOS code
- Support manufacturing bring-up and validation

Platform Integration:
- Interface with CPU/GPU vendors for new platform bring-up
- Integrate and rebase Reference Code packages
- Support system validation and debugging

Leadership Responsibilities:
- Provide technical leadership in advanced features
- Mentor junior BIOS engineers
- Review technical specifications and design documents
- Lead architecture discussions and technical planning
- Establish coding standards and best practices

Project Management:
- Coordinate between international teams (US and Taiwan)
- Track project timelines and deliverables
- Interface with product management and customer teams

Ecosystem Management:
- Maintain relationships with silicon vendors
- Participate in industry forums and standards bodies
- Keep up with emerging technologies and industry trends

About the team
"*Why 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.

*Diverse Experiences*
Amazon values diverse experiences. Even if you do not meet all of the preferred 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.

*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.

*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 conferences, inspire us to never stop embracing our uniqueness.

*Mentorship and 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

- 5+ years of non-internship professional software development experience
- 5+ years of programming with at least one software programming language experience
- 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience
- Experience as a mentor, tech lead or leading an engineering team
- 4+ years of embedded firmware development experience

PREFERRED QUALIFICATIONS

- 5+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience
- Bachelor's degree in computer science or equivalent

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 for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

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 .

USA, CA, Cupertino - 193,300.00 - 261,500.00 USD annually
USA, WA, Seattle - 168,100.00 - 227,400.00 USD annually