Thermofluids Analysis Intern - Summer 2027

Antares•Los Angeles, CA

1d•$34 - $34•Onsite

About The Position

Internships at Antares are anything but ordinary. You'll work alongside our team as we design, build, and test fission microreactors built to deliver reliable energy for critical missions on Earth, in space, and underwater. Our interns contribute to real work from day one. Depending on your role, you may touch hardware, write and test software, support manufacturing and operations, or help build the systems that allow Antares to move quickly as we scale. You'll work alongside engineers, operators, and other experts solving challenging problems—and you'll leave your internship with hands-on experience that's difficult to find anywhere else. We work hard, move quickly, and take pride in what we're building. If you're excited to learn by doing and want to contribute to the next generation of nuclear energy, we'd love to have you join us next summer. We will be running two separate cohorts to accommodate students on both semester and quarter schedules: Cohort #1 Monday, May 17 – Friday, August 13 Cohort #2 Monday, June 14 – Friday, September 10 All internship roles are based at our Torrance headquarters and require interns to work onsite five days per week. We will not be considering candidates for remote or hybrid arrangements. Interns will receive a relocation and housing stipend as part of their offer package. The Analysis team at Antares develops and applies physics-based models to guide the design, testing, and development of reactor systems. The team works across engineering disciplines to size components, understand thermal and fluid performance, evaluate structural response, and turn simulation and test data into engineering decisions. Interns begin with small starter projects and then quickly take ownership of a long-duration project that culminates in a technical deliverable and presentation. You will be integrated and evaluated as if you are a first-year junior engineer, not simply an intern. The bar for success is high: you will be expected to use your mentor and the resources around you thoughtfully, execute on your project, and identify additional issues and opportunities for improvement.

Requirements

Currently enrolled in at least a bachelor's degree program in mechanical, aerospace, nuclear, chemical, or another relevant engineering discipline and entering the junior or senior year of study.
Prior internship experience or more than one year of significant project-team, laboratory, or research experience.

Nice To Haves

GPA of 3.5 or above.
Experience in a university club or organization; leadership experience is preferred.
Strong interpersonal and technical communication skills, such as leading a student project team or presenting research at a conference.
Strong analytical and problem-solving skills with close attention to detail.
Ability to work cross-functionally with different groups and teams.
Ability to work effectively in a dynamic environment with changing needs and requirements.
Ability to work independently and collaboratively, take initiative, and communicate effectively.
Experience with Python and engineering data analysis.
Experience with CFD, FEA, CAD, MATLAB, or related modeling and analysis tools.
Coursework or project experience in thermodynamics, fluid mechanics, heat transfer, numerical methods, or solid mechanics.

Responsibilities

Build CFD models of reactor components to evaluate fluid flow, heat transfer, and component performance.
Build FEA models of reactor components to evaluate relevant thermal and structural behavior.
Develop Python tools that support the sizing and evaluation of new designs.
Process, review, and interpret test data; compare results with analytical and numerical predictions.
Define model assumptions, boundary conditions, and inputs, and assess convergence, sensitivity, and model fidelity.
Document methods, results, limitations, and recommendations in clear technical deliverables.
Complete initial starter projects, then own a long-duration project through final technical presentation.
Collaborate with mentors and cross-functional engineering partners while proactively identifying technical risks and opportunities for improvement.