Thea Energy

Develops fusion power via planar-coil stellarators

Electronics Hardware Design Engineer

Board & Electronics DesignConfirmed live in the last 24 hours

Full-timeKearny, NJ, USA

About the Job

Requirements

Bachelor’s or Master’s degree in Electrical Engineering, Electronics Engineering, or a related field.
At least 5 years of experience in embedded hardware design for power systems, control systems, or instrumentation.
Expertise in analog and mixed-signal circuit design.
Expertise in high-speed digital interfaces, including SPI, I2C, UART, RS-485, CAN, and Aurora.
Expertise in signal conditioning for sensors and actuators.
Proficiency with schematic capture and PCB layout tools such as Altium Designer or OrCAD.
Hands-on experience with oscilloscopes, logic analyzers, and multimeters.
Hands-on experience with board-level debugging, rework, and signal probing.
Strong understanding of PCB stackups, thermal design, creepage and clearance, and layout for high-current environments.
Ability to occasionally lift up to 50 pounds.
Ability to perform activities such as typing, standing, or sitting for extended periods.
Willingness to occasionally travel or work required nights, weekends, or on-call.
Ability to work in a facility containing industrial hazards, including heat, cold, noise, fumes, strong magnets, high voltage, high current, pressure systems, and cryogenics.

Responsibilities

Design and develop custom embedded control boards, including ARM, DSP, and/or FPGA/SoC-based controller boards; ADC/DAC interfaces, digital I/O, and sensor front-ends; and gate driver boards and opto-isolated switching logic.
Generate schematics and PCB layouts, focusing on signal integrity, high-current and/or high-voltage handling, and isolation.
Develop interface circuitry between embedded controllers and the power stage, including current/voltage sensing, PWM outputs, fault inputs, and communication buses.
Select and source components based on performance, reliability, and availability.
Build and test prototypes; perform hardware bring-up, debugging, signal probing, and validation under operating conditions.
Collaborate with embedded firmware developers to ensure hardware/software compatibility and deterministic real-time behavior.
Work with power electronics engineers to ensure optimal mechanical, thermal, and electrical integration.
Implement EMI/EMC mitigation techniques, isolation strategies, and power integrity best practices.

Desired Qualifications

Experience working on control electronics for power supplies, motor drives, or magnet systems.
Knowledge of gate driver design, isolation techniques, and fail-safe circuitry.
Familiarity with EMI/EMC compliance standards and mitigation techniques.
Exposure to RTOS- or FPGA-based control systems and real-time embedded integration.

About Thea Energy:

Thea Energy is leveraging recent breakthroughs in stellarator physics and engineering to create a faster and simpler approach to commercializing fusion energy. The company is reinventing the stellarator using computer-controlled arrays of planar coils thereby replacing the intricate, complex modular magnets required in all other stellarator architectures. Thea Energy is on a mission to create a limitless source of zero emission energy for a sustainable future.

Position Overview:

Thea Energy is seeking a highly skilled Electronics Hardware Design Engineer to lead the design and development of electronics, power electronics, and embedded control hardware for the Power Supply Systems, and Data Acquisition Units for the Control System of the Eos Stellarator. This engineer will be responsible for creating high-performance, reliable electronics to interface between control firmware, power conversion hardware, and diagnostics subsystems.

The role includes schematic capture, PCB layout, component selection, hardware bring-up, and cross-functional integration with power electronics, software, and system engineers. This is a hands-on, lab-focused role with a critical impact on the development of the control core of a fusion energy system.

Key Responsibility Areas:

Design and develop custom embedded control boards including:
ARM, DSP, and/or FPGA/SoC based controller boards
ADC/DAC interfaces, digital I/O, sensor front-ends
Gate driver boards and opto-isolated switching logic
Generate schematics and PCB layouts with a focus on signal integrity, high-current and/or high-voltage handling, and isolation.
Develop interface circuitry between embedded controllers and the power stage: current/voltage sensing, PWM outputs, fault inputs, and communication buses.
Select and source components based on performance, reliability, and availability.
Build and test prototypes, perform hardware bring-up, debugging, signal probing, and validation under operating conditions.
Collaborate with embedded firmware developers to ensure hardware/software compatibility and deterministic real-time behavior.
Work closely with power electronics engineers to ensure optimal mechanical, thermal, and electrical integration.
Implement EMI/EMC mitigation techniques, isolation strategies, and power integrity best practices.

Ideal Experience & Skillsets:

Required Qualifications:

Bachelor’s or Master’s degree in Electrical Engineering, Electronics Engineering, or related field.

5+ years of experience in embedded hardware design for power systems, control systems, or instrumentation.

Expertise in:

Analog and mixed-signal circuit design

High-speed digital interfaces (SPI, I2C, UART, RS-485, CAN, Aurora)

Signal conditioning for sensors and actuators

Proficiency in schematic capture and PCB layout tools: Altium Designer or OrCAD

Hands-on experience with:

Oscilloscopes, logic analyzers, and multimeters

Board-level debugging, rework, and signal probing

Strong understanding of PCB stackups, thermal design, creepage/clearance, and layout for high-current environments

Preferred Qualifications:

Experience working on control electronics for power supplies, motor drives, or magnet systems

Knowledge of gate driver design, isolation techniques, and fail-safe circuitry

Familiarity with EMI/EMC compliance standards and mitigation techniques

Exposure to RTOS- or FPGA-based control systems and real-time embedded integration

Tools & Platforms:

Design Software: Altium Designer, OrCAD, LTSpice, PLECS (for co-design)

Lab Tools: Oscilloscopes, spectrum analyzers, signal generators, logic analyzers

Interfaces: UART, SPI, I2C, RS-485, RS-232, CAN, FlexRay, Aurora, PWM, ADC/DAC

Company Benefits:

Salary range $110,000-$150,000
Comprehensive health benefits (e.g. medical/dental/vision)
Employee equity stock options
20 days PTO

Requirements:

Ability to occasionally lift up to 50 lbs.
Ability to perform activities such as typing, standing, or sitting for extended periods of time.
Willingness to occasionally travel or work required nights/weekends/on-call.
Ability to work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, high voltage, high current, pressure systems, and cryogenics.

It’s not necessary to meet all of the skillsets outlined above. Please feel free to send us a note and tell us why you would still be a great fit for this role or Thea Energy.

Diversity and Inclusion:

Thea Energy is an equal opportunity employer committed to creating a company of diverse backgrounds. By creating a diverse environment, we will bring new ideas and approaches to solving some of the world’s hardest (and most important) problems. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, sexual orientation, gender identity or expression, national origin, family or marital status, age, disability, veteran’s status, or other characteristic protected by applicable laws and regulations.

About the Company

Thea Energy

Develops fusion power via planar-coil stellarators

Thea Energy develops fusion-based power technology to provide scalable, zero-emission baseload electricity for utilities and heavy industry. Its approach uses a reimagined stellarator with flat, planar superconducting coils controlled by software-defined systems, replacing the traditional complex magnet geometry to lower costs and improve serviceability. Its Eos neutron-source device and Helios commercial power plant concept illustrate a pipeline from research to grid-ready power, backed by DOE milestones and public-private partnerships. The company aims to commercialize fusion as a dependable grid-level energy source and win long-term offtake agreements with utilities and large customers.

Company size: 51-200
Company stage: Grant
Total funding: $145.8M
Headquarters: Princeton, NJ
Founded: 2022

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