Mechanical Engineer - Pipe Stress Analyst

Aalo Atomics is pioneering a new era in clean energy with factory-fabricated microreactors designed to deliver affordable, scalable, and reliable nuclear power. Our mission is to make nuclear energy globally accessible, starting with the Aalo-1, a 10 MWe reactor leveraging cutting-edge safety, modularity, and efficiency. Based in Austin, TX, we’re rapidly growing as we work to deploy the world’s first fleet of advanced microreactors. Join us and help revolutionize energy for a sustainable future.

We are seeking a skilled Mechanical Engineer with experience in pipe stress analysis to support the design and qualification of high-integrity piping systems for our advanced reactor projects. The ideal candidate will be proficient in ASME B31 piping codes and have experience or a strong interest in ASME Section III Class 1/2/3/A/B piping design.

• Perform pipe stress analysis using industry-standard software (e.g., CAESAR II, AutoPIPE) in compliance with ASME B31.1, or B31.3.
• Support the design, analysis, and documentation of nuclear piping systems under ASME Section III Class 1, 2, 3, A, or B requirements.
• Conduct pipe support evaluations, thermal expansion assessments, and seismic/operating load analyses.
• Interface with cross-functional teams including structural, thermal, and system design engineers.
• Prepare calculation packages, analysis reports, and design documentation for regulatory and quality reviews.
• Assist in the development and implementation of piping design standards and design review processes.

• B.S. or M.S. in Mechanical Engineering or related field.
• 3+ years of experience in pipe stress analysis and piping system design.
• Proficiency with ASME B31 codes (B31.1/B31.3).
• Working knowledge or experience with ASME Section III piping design preferred.
• Familiarity with design documentation and QA processes in regulated industries (e.g., nuclear, oil & gas, aerospace).
• Excellent written and verbal communication skills.
• U.S. Citizenship or Permanent Residency is required.

• Experience with nuclear safety-related or safety-significant piping.
• Knowledge of Code Case N-755 (for HDPE piping) and Code Case N-122.
• Familiarity with P&IDs, pipe routing models, and piping isometrics.
• Experience with SmartPlant, AutoCAD Plant 3D, or similar platforms.