Senior R&D Test Engineer - Fluid Systems

Commonwealth Fusion Systems

$90K — $145K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in mechanical, chemical, or process engineering
  • 7+ years of experience in integrated fluid/mechanical systems
  • Hands-on experience with entire lifecycle of large-scale thermofluid systems
  • Expertise in components like tanks, pumps, valves, and heat exchangers
  • Strong background in design documentation, including PFDs and P&IDs
  • Experience in designing and troubleshooting system instrumentation
  • Proficiency in tools like ANSYS, COMSOL, Python, and MATLAB
  • Practical experience in designing systems for extreme environments (cryogenic, pressurized, etc.)
  • Ability to manage vendor relationships and technical specifications

Responsibilities

  • Design fluid systems for test stands based on test objectives and team feedback
  • Challenge requirements to simplify designs and enhance risk management
  • Conduct hand calculations and structural/thermal simulations using Ansys
  • Procure process fluid components and manage vendor relationships
  • Oversee the build and commissioning of fluid systems, coordinating with teams
  • Design and implement system instrumentation and automation for safe operation

Benefits

  • 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
Full Job Description
Join the power movement as an Senior R&D Test Engineer

The role of an Senior R&D Test Engineer is to develop novel fluid systems for R&D test stands, with a major focus on supporting magnet testing. The range of process fluids is broad (liquid, gaseous, cryogenic, supercritical, molten salt, etc.), requiring strong mechanical and chemical engineering fundamentals. The ideal candidate will be resourceful-combining industry best practices, off-the-shelf and customized hardware, and creativity to deliver these fluid systems on tight timelines.

Projects will be on varying scales, from smaller-scale test stands and deep system analysis to larger, complex projects as needed for SPARC and ARC. In addition to designing and building, the engineer will actively operate as a test engineer to commission systems and design automation alongside a team of test/software engineers and operators. You must work collaboratively across production, R&D, procurement, and the SPARC team. Various projects will also require flexing outside of traditional fluids engineering into other disciplines, such as structures and materials engineering, to successfully retire risks for SPARC and ARC.

What you'll do:

  • Design fluid systems for test stands that meet test objectives/requirements, soliciting feedback from interfacing teams as necessary
  • Challenge requirements as necessary to achieve simplicity in design and develop efficient de-risking strategies and plans
  • Perform hand calculations and system level analyses demonstrating sufficient margin for fluid system requirements; build and run Ansys structural and thermal simulations on components and assemblies
  • Procure off-the-shelf process fluid components, manage relationships with vendors, draft specifications for speciality parts and design custom fluid system components as needed
  • Manage the build and commissioning of fluid systems, coordinating engineers and technicians to safely bring systems to operational status
  • Design system instrumentation and automation for safe operations


What we're looking for:

  • Bachelor's degree in mechanical, chemical, process engineering, or a closely related field
  • 7+ years of experience in the engineering of integrated fluid/mechanical systems (experience with both small-scale rapid R&D and large-scale systems is highly desired)
  • Full-lifecycle fluid systems:
    • Hands-on experience executing the entire lifecycle of large-scale thermofluid systems
  • Component expertise:
    • Experience developing specifications, sizing and working with tanks, process piping, pumps, valves, compressors, purification stages, circulators, heat exchangers, etc.
  • Design documentation:
    • Strong background in establishing system requirements, generating process flow diagrams (PFDs), and developing piping and instrumentation diagrams (P&IDs)
  • Instrumentation:
    • Experience in the design, integration, and troubleshooting of system instrumentation
  • Software and analysis tools:
    • Experience utilizing engineering tools such as ANSYS, COMSOL, 1D compressible flow codes, Python and MATLAB
  • Extreme environments:
    • Practical experience designing, building, and commissioning fluid systems for specialized pressurized, cryogenic, vacuum, and/or elevated-temperature applications
  • Vendor relations:
    • Experience sourcing complex components, drafting technical specifications, and managing relationships with specialized vendors and suppliers
  • Cross-functional communication:
    • Strong ability to distill complex fluid system details and effectively communicate to non-experts and interfacing teams across R&D, production, and procurement
  • Problem solving:
    • Highly driven to challenge assumptions, make efficient technical decisions, and develop innovative solutions on tight timelines


Bonus points for:

  • Adaptability:
    • Ability to flex into adjacent engineering disciplines, such as structures or materials, when required to help retire risks for SPARC and ARC
  • Process optimization:
    • Strong aptitude for identifying bottlenecks and improving throughput during system designs, builds, and commissioning operations


Must-have requirements:

  • Ability to occasionally lift up to 50 lbs
  • Perform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time
  • Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
  • Willingness to travel or work required nights/weekends/on-call occasionally


$90,000 - $145,000 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

#LI-Onsite

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we're eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.

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