Senior/Principal Mechanical Engineer

Job Description

At Torus, we're building the world's first mesh energy infrastructure, systems that protect communities, reduce costs, and strengthen the grid for decades to come. As a Senior or Principal Mechanical Engineer, you'll own the design, validation, and productization of the sub-systems that make resilient, scalable energy storage possible, whether that's battery-based, flywheel-based, or the integration points between them.

This role sits at the intersection of deep technical ownership and systems thinking. You'll shape how hardware decisions ripple across the full product lifecycle, from early concept through high-volume manufacturing, balancing cost, complexity, reliability, and manufacturability as a unified problem. We value speed and quality equally; moving fast matters, but so does building it right the first time.

If you thrive on hard problems, take full ownership from the first sketch to the final spec, and want your work to directly accelerate the energy transition, this role was built for you.

Who You Are

• You seek context before conclusions. You approach complex problems and cross-functional work with curiosity first; asking questions, gathering perspective, and making sure you understand the full picture before drawing conclusions.
• You move with urgency and hold the line on quality. You hold speed and quality to the same standard. Both are requirements, not trade-offs. You've internalized "do it nice or do it twice" and it shows in how you work.
• You think in systems, not just components. Your design decisions account for manufacturing, serviceability, cost, and safety; not just what performs well on paper. You naturally zoom out to understand how your work connects to the whole.
• You communicate directly and without burying the lead. Whether you're presenting a trade study, flagging a risk, or pushing back on a spec, you lead with the answer and bring the data to back it up.
• You build trust through transparency. You give feedback directly and privately when it matters, celebrate teammates openly, and assume positive intent when things get hard.
• You take full ownership and bring others along. At a senior or principal level, you don't just execute; you lead technical direction, mentor less experienced engineers, and make the team around you faster and sharper.

Key Responsibilities

• Own hardware development and technical leadership through all stages: conceptualization, prototyping, testing, and production.
• Solve complex technical problems to meet product specifications, while balancing cost, complexity, and quality.
• Build, test, and analyze hardware systems using sensors, test equipment, and electromechanical components.
• Rapidly iterate on designs and analyses to guide product development direction.
• Apply Design for Manufacturing (DFM) principles, including poka-yoke techniques, to reduce part count, process complexity, and improve reliability.
• Collaborate closely with cross-functional teams and external engineering partners to drive design decisions and execution.
• Ensure designs comply with applicable codes, industry standards, and safety requirements.

Required Experience

• Bachelor's Degree in Mechanical Engineering or related field.
• 5+ years of hands-on experience in mechanical design, analysis, testing, and manufacturing, with demonstrated ownership and execution across the full product lifecycle.
• Proficient in SolidWorks CAD with strong command of part and assembly modeling, detailed drawings, and engineering documentation practices.
• Strong analytical foundation, comfortable sizing and validating designs through both first-principles calculations and Finite Element Analysis (FEA).
• Demonstrated experience in prototyping, testing, and design validation.
• Proven ability to take full ownership of complex technical challenges and system-level designs.
• Broad technical expertise spanning multiple mechanical engineering domains, with a passion for designing robust, reliable hardware.
• Proactive, action-oriented approach to problem-solving and continuous improvement.

Preferred Experience

• Experience leading hardware development at a technical or product level, setting direction, driving decisions, and bringing others along.
• Strong understanding and practical application of Geometric Dimensioning & Tolerancing (GD&T).
• Experience with Design of Experiments (DOE) and application of Statistical Process Control (SPC) in development and manufacturing environments.

Additional Details

Background Check All candidates are subject to a background check.

Location + Travel The role is based in our GigaOne Warehouse (air-conditioned) with some remote work, as needed. May require occasional onsite work at our Headquarters in South Salt Lake and/or Springville R&D warehouse (air-conditioned and non air-conditioned).

Schedule Full-Time, Salaried

Compensation $100,000-145,000 (Note: We have the flexibility to hire at different levels, which may impact the corresponding pay range.)

Work Authorization Applicants must already have the legal authorization to work in the US without requiring any employer sponsorship.

Physical Requirements

• Must have the ability to safely lift and move objects weighing up to 50 lbs.
• Must be capable of standing, bending, and executing repetitive tasks for prolonged periods of time.
• Ability to read, identify, observe and recognize details, color-coding and fine print at close range on associated engineering drawings.
• Ability to don personal protective equipment to include, but not limited to, respiratory protective equipment with proper seal, coveralls, ear protection, gloves, eye protection & safety helmet.
• Ability to observe, detect and respond to audible and visual machine malfunction warnings.
• Ability to communicate information so others can understand. Must be able to exchange accurate information in these situations.
• Must report to work reliably and with the ability to use full and unimpaired skills and judgment to safely execute your job.
• Proficiency in reading, writing, and speaking English required.

Our Perks & Benefits

Benefits eligibility is based on employment status.

Financial

• Employee Rewards Package including equity
• 401(k) Retirement Savings Plan
• Torus paid life and AD&D Insurance with options to purchase additional coverage
• Voluntary short- and long-term disability insurance

Health & Wellness

• Health Benefits Package: Choice between traditional PPO or HSA-eligible medical plans with Torus covering 50% of medical premiums; Dental insurance; and Vision insurance
• Plan participants have access to telehealth services, mental health support and coaching, and exclusive discounts on brands, dining, entertainment, and more.

Time Off

• Unlimited discretionary PTO or 10 days annual PTO
• 10 paid company holidays
• Waiting period-free 100% paid parental leave

Culture & Community

• Regular company-wide offsites to showcase our progress and learnings. A time to step back, think strategically, and work on the business together.
• Team members receive Torus branded gear
• Peer Recognition Program
• Fully stocked break rooms with free snacks and drinks. Because great work deserves great fuel.

Torus is proud to be an Equal Opportunity Employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status.

Torus participates in E-Verify. Once you accept a job offer, we will provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS) with information from your Form I-9 to confirm work authorization.