Junior Electrical Engineer

Systems; Littleton (MA); On-site; USD 90,000 - 120,000; Full time

Job summary

Mevion Medical Systems, Inc. seeks a Junior Electrical Engineer to join a multidisciplinary team focused on designing and developing electrical subsystems for the MEVION S250 proton therapy platform.

You will contribute to power electronics, control circuitry, and high‑voltage systems while performing testing, troubleshooting, and documentation to support product lifecycle and reliability.

Qualifications

• Bachelor’s or Master’s degree in Electrical Engineering or equivalent working experience.
• Strong English communication and Mandarin required.
• Fundamental knowledge of analog and digital circuits, power electronics, and measurement techniques.
• Experience with schematic capture, circuit design, PCB design, testing, or troubleshooting.

Responsibilities

• Supports the design and development of electrical subsystems, including power electronics, control circuitry, and high‑voltage systems.
• Performs circuit analysis, schematic design, and PCB layout reviews with guidance.
• Develops and executes electrical system test plans, troubleshooting activities, and design verification testing.
• Authors and maintains electrical design documentation and engineering changes.
• Collaborates with cross‑functional teams in the US and China to support integration and improvements.
• Hands‑on assembly, testing, repair, and modification of electrical assemblies as needed.
• Ensures compliance with safety and EMC standards including IEC 60601 where applicable.

Skills

Circuit design

PCB design

Schematic capture

Testing

Troubleshooting

Power electronics

High-voltage systems

Oscilloscopes

DMMs

Electrical measurement

Education

Electrical Engineering degree

Tools

Altium

OrCAD

Circuit simulation

Job description

Position Summary:The Junior Electrical Engineer supports the design and development of electrical subsystems for the MEVION S250 proton therapy platform. Working as part of a multidisciplinary and global engineering team, this role contributes to electrical design, prototyping, testing, troubleshooting, and product improvements throughout the product lifecycle. The position provides an opportunity to develop broad hands-on engineering experience while contributing to the performance, safety, and reliability of complex medical equipment. This role works closely with teams in both the United States and China and requires strong English communication skills and fluency in Mandarin Chinese.Essential Functions:Supports the design and development of electrical subsystems, including power electronics, control circuitry, and high-voltage systems.Performs circuit analysis, schematic design, and review of PCB layouts with guidance from more experienced engineers as needed.Develops and executes electrical system test plans, troubleshooting activities, failure analysis, and design verification testing.Authors and maintains electrical design documentation, including schematics, BOMs, test documentation, and engineering change orders.Participates in design reviews and applies established electrical design methods, standards, and best practices.Collaborates with mechanical, software, physics, manufacturing, and service teams in the United States and China to support electrical subsystem integration and product improvementsTroubleshoots and helps resolve electrical issues during development, manufacturing, commissioning, and field operation, including hands-on inspection, measurement, repair, and modification of electrical assemblies.Supports compliance of electrical designs with applicable safety and EMC requirements, including IEC 60601 where applicable.Performs hands-on electrical assembly and lab work, including cable routing, cable and harness fabrication, soldering, connector assembly, equipment installation, and other prototype or test support activities as needed.Builds technical knowledge of Mevion products and develops increasing ownership of electrical design tasks and subsystems over time.Required Education, Training, and Experience:Bachelor’s or Master’s degree in Electrical Engineering or equivalent working experience. Recent and soon-to-be graduates are encouraged to apply.Professional working proficiency in English and fluency in Mandarin are required for this position.Foundational knowledge of electrical engineering principles, including analog and digital circuits, power electronics, and electrical measurement techniques.Academic, internship, project, or professional experience with schematic capture, circuit design, PCB design, testing, or troubleshooting.Familiarity with electrical test equipment such as oscilloscopes, digital multimeters, power supplies, and other common lab instrumentation.Ability and willingness to perform hands-on electrical work, including soldering, cable and harness assembly, connector termination, equipment installation, and troubleshooting.Ability to read and understand electrical schematics, wiring diagrams, technical specifications, and engineering documentation.Strong problem-solving skills and willingness to learn new systems, tools, and technologies.Ability to work effectively in a multidisciplinary engineering environment and transition between design, test, troubleshooting, and hands-on support activities.Willingness to travel as needed (<25%) to support engineering, manufacturing, installation, or field activities.Preferred Experience:Internship, co-op, academic, or professional experience in product design and development.Familiarity with PCB design tools such as Altium or OrCAD and circuit simulation software.Exposure to power electronics, high-voltage systems, precision analog/digital circuitry, or AC/DC power distribution.Experience with RF systems. Hands-on experience building, modifying, testing, or troubleshooting electrical assemblies, prototypes, cables, or harnesses.Physical and Environmental Considerations:Regular standing and walking in lab, manufacturing, or engineering areas.Frequent use of hands to handle tools, instruments, cables, connectors, and small parts.Occasional lifting or moving of equipment and materials up to 35 lbsOccasional bending, stooping, kneeling, or reaching to access equipment, cable routing, and work areas.Ability to perform hands-on electrical assembly, installation, test, and troubleshooting activities.Combination of office, lab, manufacturing, and engineering environments.Work around equipment, tools, and test setups with moderate noise.Use of appropriate PPE as required by task and safety procedures.May need to work in the vicinity of high magnetic fields.Occasional travel (<25%) may be required to support engineering, manufacturing, installation, or field activities.The hiring range represents what Mevion Medical Systems, Inc. reasonably expects to pay for this position at the time of posting. The actual salary offered will depend on the selected candidate’s qualifications, experience, skills, and other job-related factors.