Power Electronics Reliability Engineer

Amazon Web Services is seeking a Power Electronics Reliability Engineer to own the functional-safety case and the reliability/qualification program for the SST control, protection and power-conversion system.

As a Power Electronics Reliability Engineer you will: 1) define IEC 61508 safety functions and safe-state behavior (STO/SS1/SLS), 2) plan/run HALT/HASS and qualification per the V&V strategy, and 3) deliver a defined safety and reliability scope. You will drive hazard analysis, diagnostic/watchdog requirements, fault-state management, failure analysis and root-cause, and derive MTBF/MTTR and reliability metrics with the required diagnostic coverage. You will maintain safety requirements and traceability, review implementation evidence, coordinate critical-component supplier qualification and corrective actions, and resolve issues across disciplines.

About AIS

AWS Infrastructure Services (AIS) owns the design, planning, delivery, and operation of all AWS global infrastructure. In other words, we’re the people who keep the cloud running. We support all AWS data centers and all of the servers, storage, networking, power, and cooling equipment that ensure our customers have continual access to the innovation they rely on. We work on the most challenging problems, with thousands of variables impacting the supply chain - and we’re looking for talented people who want to help.

You’ll join a diverse team of software, hardware, and network engineers, supply chain specialists, security experts, operations managers, and other vital roles. You’ll collaborate with people across AWS to help us deliver the highest standards for safety and security while providing seemingly infinite capacity at the lowest possible cost for our customers. And you’ll experience an inclusive culture that welcomes bold ideas and empowers you to own them to completion.

Key job responsibilities

Safety architecture:

- Apply IEC 61508 principles to safety-related embedded and control functions.

- Define safety functions and safe-state behavior.

- Coordinate safety requirements with system, FPGA, controls and embedded software architectures.

Protection mechanisms:

- Define and review STO, SS1 and SLS functions as applicable to the architecture.

- Define watchdog and embedded diagnostic requirements.

- Develop and review fault-state management strategies.

Safety lifecycle & verification:

- Maintain safety requirements and traceability.

- Support safety analysis and verification planning.

- Review implementation evidence and safety-related test results.

- Coordinate safety issue resolution across engineering disciplines.

Qualification:

- Plan and execute HALT/HASS and other qualification activities identified in the V&V strategy.

- Define reliability stresses and qualification conditions with engineering teams.

- Track qualification status and evidence.

Failure analysis:

- Perform and coordinate failure analysis.

- Identify recurring failure modes and recommend corrective actions.

- Feed reliability findings back into design margins, safe-state behavior and component selection.

Reliability metrics:

- Track MTBF/MTTR and other reliability indicators.

- Identify reliability and safety risks in critical components and subsystems.

- Use test and field data to prioritize reliability and safety improvements.

Supplier follow-up:

- Coordinate critical-component supplier follow-up.

- Review supplier qualification and reliability evidence.

- Support corrective actions for component-related failures.

SST System Alignment:

- Align the role with the system safety framework without treating SIL2 as a system requirement. system specification references NFPA, UL and IEEE electrical-safety standards; IEC 61508/SIL targets should be established by the product safety strategy if applicable.

- Cover functional protection, fault-state behavior, safe restart inhibition, insulation-monitoring interactions, arc-flash considerations and diagnostic coverage.

- Translate system 15+ year design-life and environmental/structural expectations into reliability stresses and qualification plans.

- Include redundancy/catcher behavior, degradation warnings, fault recovery, thermal derating and critical MV/HV insulation components in both safety and reliability analysis.

A day in the life

In this role, you'll focus on establishing safety architectures and reliability programs for our Solid State Transformer control and protection systems. Your day might include defining safety functions according to IEC 61508 standards, coordinating with embedded software and FPGA teams to align safety requirements with system design, or planning qualification activities like HALT/HASS testing.

You'll analyze field data and test results to identify reliability trends, work with component suppliers to resolve critical issues, and document your findings to inform design improvements. You'll also participate in cross-functional problem-solving sessions where your expertise helps resolve complex safety and reliability challenges that span electrical, software, and systems engineering disciplines.

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.

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 empowers us to celebrate our differences. Ongoing events and learning experiences, including our Conversations on Race and Ethnicity (CORE) and 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 flexible work hours and arrangements are part of our 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 have a career path for you no matter what stage you’re in when you start here. 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

- Bachelor's degree in Electrical Engineering or related experience/ field.

- Reliability-engineering experience in power electronics or industrial systems.

- Experience with IEC 61508 and functional-safety development and/or embedded systems and diagnostics experience.

- Experience documenting design decisions, assumptions, trade-offs, risks and technical specifications.

- Experience using engineering analysis and measured evidence demonstrating strong data-driven problem solving.

- Experience demonstrating maintaining a strong focus on safety, reliability, serviceability and scalable deployment.

Preferred qualifications

- Master's degree or PhD in Electrical Engineering.

- Experience in functional safety (IEC 61508/62061-class) and/or reliability & qualification engineering for electrical/power-electronics systems, including verification.

- Experience with HALT/HASS and failure analysis.

- Demonstrated understanding of safe-state behavior, watchdogs, fault-state management, MTBF/MTTR and reliability metrics.

- Experience working with FPGA, controls and embedded-software teams, and coordinating critical component suppliers.

- Demonstrated operating effectively in a greenfield environment where standards and reference designs may require interpretation and adaptation.

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