Thermal - Fluids Analyst I / II

Location Los Angeles (Torrance, CA) We are located in Torrance, CA in a 322,000 square foot, brand new facility featuring large open spaces for team collaboration, R&D, and production, as well as easy access to the 405, 105, and 110 freeways. Our facility is in the heart of Los Angeles' vibrant emerging tech ecosystem alongside many other high growth startups and enterprises. Employment Type Full time Department Reactor Hardware Engineering – Analysis Compensation $90,000 – $150,000 Engineer I: $90,000 – $115,000 Engineer II: $112,000 – $150,000 Job Overview As an analyst at Antares your primary responsibility will be building and running thermal‑fluids models of components and subsystems throughout the reactor core and power conversion system to ensure our designs meet thermal, mechanical, operational, and performance requirements within the extreme environments of our R1 micro‑reactor. Design engineers will rely on your modeling and technical expertise for iterative design feedback and optimization, while adhering to best practices for design for manufacturing (DFM) and maintaining a rapid pace of development. You may also provide technical support before, during, and after test campaigns, including planning testing goals, instrumentation requests, root cause analysis, post‑test data review, and model validation. Roles and Responsibilities Assess subcomponent designs for pressure drop, heat transfer capabilities, and other performance characteristics using hand calculations, in‑house tools, and CFD. Collaborate with designers and engineers to provide guidance on initial sizing, material selection, and design feedback based on analytical results. Compile detailed documentation of analytical results and communicate key results, assumptions, and limitations to stakeholders throughout the company and external customers. Provide support to test engineers in collaborating on test design, instrumentation selection, and data review to ensure test campaigns validate our models. Develop internal tools and calculators to enable other engineers to perform analytical assessments quickly without detailed finite element models. Provide technical mentorship and guidance to other engineers and across teams. Basic Qualifications Bachelor's in Mechanical or Aerospace Engineering or a similar technical discipline. Experience building and running CFD models using commercial codes such as Fluent, CFX, and Star‑CCM+, including conjugate heat transfer models and compressible equations of state. Experience using Computer Aided Design (CAD) software for design modification and model defeaturing (Siemens NX or similar). Experience in Python, MATLAB, VBA, or other scripting language to build and maintain tools and calculators. Preferred Skills & Experience Master's in Mechanical or Aerospace Engineering or a similar technical discipline. 3+ years of experience performing thermal‑fluids analysis. Familiarity with 1‑D fluid network tools such as Flownex, Sinda‑Fluint, or RELAP5. Participation in regulatory qualification or certification programs for safety‑critical systems in the aerospace or nuclear industry. Understanding and experience of implementing numerical methods to solve fluid‑dynamic and thermodynamic systems. Experience working with multiphase fluid and heat transport systems such as heat pipes, Rankine cycle engines, or saturated cryogenic storage. Familiar with ASME BPVC Section III Div 5. Experience building and running finite element analysis (FEA) models. Comfortable in a fast‑paced environment with rapid design iteration loops. Additional Requirements Ability to work long hours and weekends as necessary to support critical milestones. Equal Opportunity Antares is an Equal Opportunity Employer. Employment decisions are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status. #J-18808-Ljbffr