Senior Process Engineer, Helium Systems — Equity & PTO

Valar Atomics Inc.; Torrance (CA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Equity ownership in a rapidly growing,

Unlimited PTO

Free daily lunch and dinner onsite

Generous PPE stipend

High-impact startup environment with,-

Opportunities for rapid career growth

Direct collaboration with experienced,

Job summary

Valar Atomics is seeking a Senior Process Engineer for the Numenor reactor program. You will own helium process systems from concept to commissioning, driving design accuracy and manufacturability. The role is hands-on, hardware-first, with rigorous process engineering standards.

You will collaborate with cross-functional teams to ensure integration with mechanical, safety, quality, IC&E, and supply chain. Leadership and mentoring are expected as the program scales.

Qualifications

• 5+ years designing industrial process systems, gas handling, thermal-fluid systems or related energy systems.
• Proven track record taking complex engineered systems from concept through build, test, and commissioning.
• Strong foundation in thermodynamics, fluid mechanics, and process engineering principles.
• Experience developing PFDs, P&IDs, process calculations, equipment specifications, and operating procedures.
• Familiarity with industrial instrumentation, process controls, and gas analysis systems.

Responsibilities

• Own the process architecture and design of helium systems from concept through design freeze.
• Perform mass and energy balances, pressure drop, heat transfer, equipment sizing, gas flow, and transient behavior analyses.
• Develop PFDs, P&IDs, equipment specs, engineering calculations, and operating procedures.
• Specify and integrate process equipment including pressure vessels, heat exchangers, compressors, valves, piping, instrumentation, and gas analyzers.
• Present designs at design reviews and participate in HAZOPs, FMEAs, and system safety analyses.
• Lead fabrication oversight, inspections, issue resolution, and acceptance testing with internal manufacturing and suppliers.
• Lead system integration, installation, startup, commissioning, and troubleshooting through first operation.
• Design for manufacture and repeatability to improve unit build speed.
• Collaborate across mechanical, safety, quality, IC&E, and supply chain to keep the plant design integrated.
• Mentor junior engineers and contribute to process engineering standards.

Skills

Process design

Helium systems

Mass & energy balances

PFDs & P&IDs

Thermodynamics

Gas analyses

HAZOP/FMEA

Education

Bachelor's degree in Chemical/Mechanical/Nuclear Engineering

Job description

Valar Atomics is seeking a Senior Process Engineer for the Numenor reactor program. You will own helium process systems from concept to commissioning, driving design accuracy and manufacturability. The role is hands-on, hardware-first, with rigorous process engineering standards.

You will collaborate with cross-functional teams to ensure integration with mechanical, safety, quality, IC&E, and supply chain. Leadership and mentoring are expected as the program scales.