Thermal - Fluids Analyst I​/II

Antares Thermal Fluids Analyst

At Antares, our long-term mission is to make clean energy abundant from Earth to the Asteroid Belt. We're fueled by the belief that advanced nuclear energy can strengthen our military, solve the climate crisis, elevate global living standards, and expand humanity's presence in outer space. To achieve our mission, we're building mass-producible, inherently safe, deployable microreactors that can be used terrestrially, underwater, and in space.

Formed in 2023, the Antares team hails from SpaceX, The White House, MIT, Rigetti Computing, The Air Force, General Atomics, Relativity Space, Ursa Major, and National Laboratories like Los Alamos, Idaho, and Oak Ridge. Antares has raised over $130M in venture capital from top-tier investors and has over $13M in government funding.

• Assess subcomponent designs for pressure drop, heat transfer capabilities, and other performance characteristics using a combination of hand-calcs, in-house tools, and CFD
• Collaborate with designers and responsible 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 the form of collaborative test design, instrumentation selection, and data review to ensure test campaigns provide the necessary data to validate our models
• Develop internal tools and calculators to enable other engineers to quickly and independently perform analytical assessments of their designs without the need for detailed finite element models
• Provide technical mentorship and guidance to other engineers and across teams

• Bachelor's in Mechanical or Aerospace Engineering or 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, Mat Lab, VBA, or other scripting language to build and maintain tools and calculators

• Master's in Mechanical or Aerospace Engineering or similar technical discipline
• 3+ years 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 & heat transport systems (Heat Pipes, Rankine Cycle Engines, Saturated Cryogenic Storage)
• Familiar with ASME BPVC Section III Div 5
• Experience building and running Finite Element Analysis (FEA) models
• Comfortable in fast-paced environment with rapid design iteration loops

• Ability to work long hours and weekends as necessary to support critical milestones

Engineer I comp band - $90K - $115K

Engineer II comp band - $112K - $150K

• 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.

At Antares, we like to specifically tie each role to our founding document's set of values–here are the top five cultural values we think you should believe at your core to be successful:

• Think in Systems
  - Energy and Defense are complex ecosystems with numerous stakeholders with competing priorities, conflicting policies, perverse incentives, and emergent and path-dependent properties. First principles thinking alone is insufficient. Think probabilistically and then take action. "If you want to be…