US$70,000–120,000 /yr
56d ago
US$70,000–120,000 /yr
56d ago
Job description
If that's you and this role fits, we want to hear from you.
Join the power movement as a Senior Power Electronics Engineer
Join the Pulsed Electrical Distribution System (PEDS) team at CFS as we begin development on the next-generation power supplies that will power ARC, the first grid-scale commercial fusion power plant. In 2027 our power supplies will supply SPARC with over 1GW of pulsed power. Develop a fusion engineering skillset and learn from SPARC as we demonstrate Q>1. Apply your power electronic experience to develop and qualify next-generation power supplies for ARC and beyond. We need a skilled power electronic engineer to lead our team.
What you'll do
- Architect and design the next generation of high power (>10MVA) medium voltage power supplies for ARC tokamaks utilizing latest Si and SiC semiconductor devices
- Collaborate with power semiconductor device manufacturers to develop and qualify new devices for fusion focused applications
- Model and simulate power electronic circuits and components to evaluate and characterize converter performance, efficiency, stability, etc.
- Build, test, and validate prototype 4Q power modules (H-bridge, DC link, passives, thermal management, etc.) for use within ARC tokamak power supplies
- Turn qualified prototype designs into productized solutions for ARC power supplies
- Develop technical requirements, specifications and qualification plans for corresponding power circuit components (capacitors, magnetics, passives, etc.)
- Support cross-functional team technical developments such as power distribution, energy storage, RF and other systems delivering electrical power for fusion applications
- Document designs, simulations and test results into engineering reports
What we're looking for
- 8+ years of related experience with Bachelor's degree (or) a Master's degree with 6+ years of experience with power electronics based systems
- Hands on product development experience for power electronic converter systems
- Knowledge of various inverter circuit topologies and the benefits and limitations
- Experience with modeling & simulation with analysis tools such as PLECS, PSPICE, MATLAB etc.
- Extensive experience with semiconductor devices (IGBT, MOSFET, etc.) and magnetic components (transformers, inductors etc.)
- Fundamental understanding of gate drive circuits, design and device protection
- Experience with packaging design of power conversion equipment and thermal management
- Experience with high power electrical equipment >10MVA
- Experience with hands on testing of electrical components, sub-assemblies and systems in the laboratory and use of oscilloscopes and other measurement equipment
- Excellent written and verbal communication skills, ability to conduct design reviews, organize and present results to both expert and non-technical audiences
Bonus points for
- Master's degree in electrical engineering with a focus on Power Electronics
- Experience with application of compliance standards to the designs (IEC, UL, CSA, NEC etc.)
- Experience in problem solving, root cause analysis and field containment actions
- Experience with hands on prototype build, prototype testing and documentation of results is a plus
- Intelligent gate drive circuit design is a bonus
Must-have Requirements
- Ability to lift up to 50lbs
- Perform activities such as standing, typing or sitting for extended periods of time
- Willingness to travel or work required nights/weekends/on-call occasionally
- Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
$134,000 - $205,000 a year
Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include: * Competitive compensation with equity * 13 Company-wide Holidays * Flexible vacation days * 10 sick days * Generous parental leave policy * Health, dental, and vision insurance * 401(k) with employer matching * Professional growth opportunities * Team-building activities
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, "Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
Pay & benefits
US$134,000–205,000 /yr
Health insurance
Dental insurance
Vision insurance
Retirement plan
Equity
Paid time off
Parental leave
About this role
Experience
8+ years with a bachelor's degree, or 6+ years with a master's degree
About Commonwealth Fusion Systems
Company Overview
Commonwealth Fusion Systems (CFS)
Cambridge, MA, United States
2018
Approximately 430 employees (source: zoominfo.com). Revenue figures vary, with reports indicating $211.3 million or $31.7 million, though as a pre-revenue fusion developer focused on R&D, these may reflect funding or operations rather than sales.
What They Do
Commonwealth Fusion Systems (CFS) is a pioneering private fusion energy company that specializes in tokamak-based magnetic confinement fusion. Founded as a spinout from MIT's Plasma Science and Fusion Center, CFS focuses on utilizing high-temperature superconducting magnets to achieve commercial net energy production (source: cfs.energy). The company has made significant strides in its technology, particularly with the development of compact fusion machines that leverage decades of tokamak science. Their flagship projects, SPARC and ARC, aim to demonstrate net energy gain and commercial viability in the coming years (source: cfs.energy).
Projects & Track Record
CFS is currently engaged in several groundbreaking projects, most notably the construction of SPARC, which is set to be the world's first net-energy fusion machine. Located at their Fusion Energy Campus in Devens, Massachusetts, SPARC aims to demonstrate net energy gain by the late 2020s (source: cfs.energy). Additionally, CFS is planning the ARC project, a 400 MW-class grid-scale tokamak power plant designed for commercial deployment in the early 2030s. These projects are underpinned by significant technological advancements, including the successful testing of the central solenoid magnet module (CSMC) in November 2024, which confirmed the manufacturability of critical components for SPARC (source: zoominfo.com).
Recent Developments
In the past two years, CFS has made remarkable progress, including the opening of its Devens Fusion Energy Campus on February 10, 2023, which was attended by notable figures such as U.S. Secretary of Energy Jennifer Granholm (source: cfs.energy). The company has also secured substantial funding, raising $863 million in August 2024, building on a previous $1.8 billion round in May 2023, bringing total funding to over $2 billion (source: wbjournal.com). Furthermore, CFS announced its first commercial power plant site in Chesterfield County, Virginia, which will be independently financed and operated, with plans for grid connection in the early 2030s (source: zoominfo.com).
Working There
CFS offers a range of roles across various disciplines, including fusion science, engineering, manufacturing, and materials science. The majority of their workforce is based at the Devens campus, which has grown to over 430 employees (source: cfs.energy). The company culture emphasizes rapid execution and transparency, attracting top talent from the fusion and manufacturing sectors. Key executives include Co-Founder and CEO Bob Mumgaard, along with other leaders in operations and science, indicating a strong demand for expertise in tough tech and physics (source: nasdaqprivatemarket.com). While specific benefits are not detailed, the scale-up and investor backing suggest competitive packages for high-caliber roles in a mission-driven environment (source: cfs.energy). Job seekers are encouraged to monitor their careers page for openings related to SPARC and ARC advancements.
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