Electrical Engineer

About the role

Tempo is seeking a Power Electronics & Controls Engineer to take meaningful ownership of power conversion system development within our engineering team. In this role, you will drive hardware design, through bring-up and field integration, and control development work effectively across engineering disciplines with a high degree of independence, and serve as a dependable technical resource for the broader team. This position is well suited for an engineer with a demonstrated track record of delivering power electronics hardware and control systems, sound technical judgment, and the ability to lead project work without close direction in a fast-paced, early-stage company environment.

Responsibilities

• Circuit & System Design
• Design and optimize power conversion circuits - including DC/DC, AC/DC, and DC/AC topologies - supporting the charging and control of Thermal Battery Modules within the TCES system.
• Evaluate design approaches for gate drivers, custom magnetics, and protection circuitry, and provide well-reasoned recommendations for high-voltage, high-temperature, and harsh-environment applications.
• Identify and advance cost reduction opportunities across the Power and Rectifier cabinets, collaborating with mechanical, thermal, and manufacturing teams to translate design improvements into practice.
• Integration & Bring-Up
• Own hardware bring-up and integration of power electronics circuits and modules, including test planning, execution, and resolution of issues through to completion.
• Lead hardware/software integration of power conversion systems in close collaboration with firmware and controls engineers, resolving interface issues and escalating appropriately when warranted.
• Coordinate across thermal, mechanical, and software engineering teams to integrate the Power Cabinet into the Thermal Array and broader TCES system architecture.
• Controls & Grid Interface
• Validate designs across the expected operating envelope, including variable generation profiles and relevant edge cases, and recommend design responses when gaps are identified.
• Utilize Hardware-in-the-Loop (HIL) simulation tools to support control system tuning and hardware/firmware co-validation.
• Reliability, Compliance & Testing
• Take ownership of regulatory compliance for assigned designs, ensuring adherence to applicable UL, CE, and IEC standards and proactively surfacing cross-cutting compliance considerations.
• Plan and execute EMC testing and reliability validation within project scope, interpreting results and driving appropriate design responses.
• Identify and resolve power conversion system issues across all stages of development - from architecture through lab validation and field deployment - applying sound judgment in prioritizing and sequencing resolution efforts.
• R&D & Scalability
• Contribute technical analysis and recommendations to power electronics scalability efforts, including modular pilot plant designs, commercial TCES system scale-up, and Thermal Array configurations.
• Support definition of power electronics requirements for new product development programs, synthesizing cross-functional inputs into clear and well-grounded technical recommendations.
• Provide technical guidance and design review support to junior engineers, contributing to a collaborative and growth-oriented team environment, as needed.

Requirements

• Required
• B.S. in Electrical Engineering or related field; M.S. preferred
• 4-6 years of hands-on power electronics design experience, with a demonstrated ability to own and deliver hardware projects end-to-end
• Solid working knowledge of DC/DC, AC/DC, and DC/AC converter topologies, with the ability to evaluate alternatives and make informed architectural recommendations
• Proficiency with laboratory instrumentation and hands-on hardware bring-up, including oscilloscopes, power analyzers, and systematic debugging of power electronics circuits
• Strong fundamentals in magnetics design, switching device selection, and thermal management of power electronics
• Effective communicator,written and verbal,with the ability to keep cross-functional teammates aligned, produce clear and maintain work instructions, and surface issues early
• Demonstrated ability to work independently, exercise sound tech

Additional Information

About Tempo Based in San Diego, California, Tempo develops thermochemical energy storage (TCES) systems designed for energy-intensive industries. The platform enables industrial operators to shift energy use over time by sourcing power when it is most cost-effective and enables the electrification of high-temperature industrial heat at a cost advantage to using fossil fuels. By storing electricity thermochemically, the system delivers a continuous stream of combustion-free, high-temperature air at up to 1,200°C. Tempo is backed by leading climate and energy investors, including Breakthrough Energy Ventures, Khosla Ventures, and Prelude Ventures. For more information, visit www.tempoenergy.com .

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