Rack Power Engineer

About the Team

OpenAIs Hardware organization develops AI-native silicon and system-level solutions for the unique demands of advanced AI workloads. Building on efforts like Jalapeño the team is developing future generations of AI-native silicon and tightly integrated systems to power the next generation of frontier models. By co-designing chips systems tools and methodologies the team helps deliver faster more efficient and production-ready hardware for OpenAIs supercomputing platform.

About the Role

Were looking for a Rack Power Engineer with deep expertise in high-power conversion and distribution to design qualify and support power systems for AI supercomputers. You will own rack power solutionsincluding power shelves AC/DC rectifiers power supply units (PSUs) power management controllers (PMCs) and high-current distributionfrom requirements and supplier development through deployment. You will also monitor fleet rack power health lead debugging and root-cause investigations and drive improvements into hardware firmware and qualification coverage.

This role is based in San Francisco CA. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees.

In this role you will:

• Own rack power architecture and requirements for high-power AI supercomputing systems including power budgets AC input interfaces DC distribution redundancy efficiency serviceability and integration with data center infrastructure.

• Drive the design and supplier development of power shelves rectifiers PSUs PMCs busbars connectors and protection circuits. Review electrical designs and control behavior and evaluate performance cost reliability and availability trade-offs.

• Define and execute component shelf and rack qualification plans covering load transients current sharing hot-swap startup and shutdown redundancy failover fault protection and recovery thermal limits and AC disturbances and ride-through.

• Partner with firmware and software teams to define and validate PMC functionality telemetry alarms power sequencing power capping and fault handling. Verify communication interfaces firmware updates interoperability and regression coverage.

• Characterize rack power under representative AI workloads. Translate steady-state demand and fast power excursions into design margins protection settings energy-storage needs and deployment requirements with system and data center teams.

• Establish fleet rack power health metrics with operations teams. Analyze telemetry event logs and failure trends to detect degraded power capacity redundancy loss current imbalance and recurring power faults.

• Lead lab and fleet debugging across power hardware firmware and system interfaces. Reproduce failures identify root causes with suppliers validate corrective actions and feed lessons into designs qualification tests and fleet remediation.

• Work with electrical mechanical thermal firmware manufacturing reliability and data center teams to take rack power systems through prototype builds qualification production and deployment. Drive supplier test reviews manufacturing test coverage and closure of power-related issues.

• Evaluate emerging rack power technologies including higher-voltage DC distribution and battery or supercapacitor energy storage. Partner with suppliers to qualify viable solutions and with safety and compliance teams to address applicable product requirements.

You might thrive in this role if you:

• Have at least 10 years of industry experience in power electronics or power delivery systems including hands-on design and qualification of high-power rack or data center power systems.

• Have a masters degree in Electrical Engineering Power Electronics a related field or equivalent practical experience.

• Have strong knowledge of AC/DC rectifiers power shelves PSUs and DC distribution including three-phase inputs power conversion topologies control-loop stability current sharing redundancy protection coordination and high-current busbars and connectors.

• Have experience defining and qualifying PMCs or related power controllers including telemetry fault management hardwarefirmware integration and interfaces such as PMBus I²C CAN or Ethernet. Understand how rack power controls interact with system power management.

• Have strong laboratory and debugging skills using oscilloscopes power analyzers programmable AC sources electronic loads and data acquisition systems. Can build automated tests analyze fleet telemetry with tools such as Python and drive root-cause investigations through verified corrective actions.

• Have taken power products from requirements through qualification and production with suppliers and cross-functional teams. Bring familiarity with safety EMC and reliability qualification; communicate technical trade-offs clearly; and work effectively through ambiguity. Experience with high-density AI racks OCP power architectures or energy-storage systems is a plus.

To comply with U.S. export control laws and regulations candidates for this role may need to meet certain legal status requirements as provided in those laws and regulations.

About OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core and to achieve our mission we must encompass and value the many different perspectives voices and experiences that form the full spectrum of humanity.

We are an equal opportunity employer and we do not discriminate on the basis of race religion color national origin sex sexual orientation age veteran status disability genetic information or other applicable legally protected characteristic.

For additional information please see OpenAIs Affirmative Action and Equal Employment Opportunity Policy Statement.

Background checks for applicants will be administered in accordance with applicable law and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws including the San Francisco Fair Chance Ordinance the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act for US-based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct adverse and negative relationship with the following job duties potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary confidential and non-public addition job duties require access to secure and protected information technology systems and related data security obligations.

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Required Experience:

IC