Multiphysics Software Intern - Summer 2027

Location: Los Angeles Department: Nuclear Engineering Employment Type: Intern Location Type: On-site

About Us

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.

The Antares team hails from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, Rigetti Computing, General Atomics, Relativity Space, Ursa Major, and National Laboratories like Idaho, Oak Ridge, Los Alamos, and Savannah River. Antares has raised over $600M in venture capital from top-tier investors and has hundreds of million-dollars on contract with the military services, NASA, and the Department of Energy.

About the Summer Internship Program

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.

About the Role

As a Software Intern, you will work on the infrastructure and tooling that enables Antares teams to deploy, monitor, and operate internal applications and compute workloads. You will own substantive projects spanning cloud deployment tooling, systems automation, observability, data project infrastructure, and cluster operations.

You will work across both cloud and on-premises infrastructure, improving how applications and data projects are deployed and monitored while helping make internal compute resources more reliable, recoverable, and efficient. This role is well suited for someone who enjoys building practical tools, automating manual processes, and improving the systems other technical teams rely on.

Roles and Responsibilities

Improve cloud deployment tooling for shared internal applications

Automate integrations between internal and external systems

Create Grafana dashboards and alerts to improve visibility into internal systems

Build standardized templates for Python data projects that improve deployment, monitoring, and dependency management

Document quality processes so they can be consistently used by non-software developers

Migrate cluster infrastructure to the latest versions of Rocky Linux and Warewulf

Build storage tooling to improve recovery and performance

Analyze and optimize cloud costs for internal job pipelines

Create dashboards that provide visibility into cluster usage

Build tooling to help teams better understand and optimize their use of shared compute resources

Basic Qualifications

Enrolled in at least a bachelor’s degree program, and going into your Junior or Senior year of studies

Must have prior internship experience, or significant (>1yr) project team, laboratory, or research experience

Preferred Skills & Experience

GPA of 3.5 or above

Experience in a University club or organization, leadership role preferred

Strong interpersonal and technical communication skills (examples: leading a student project team, presenting research at conferences, etc.)

Strong analytical and problem-solving skills with attention to detail

Ability to work cross-departmentally with different groups and teams

Ability to work effectively in a dynamic environment with changing needs and requirements

Ability to work independently and in a team, take initiative, and communicate effectively

Location

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.

Culture

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 certain, then you are apt to be obsolete.” Over-optimizing the components often degrades the system

Obsess over the End User - The customer and end user are often not the same. We will never build globally competitive commercial products if we lose sight of our end users and their entire interaction with the product life cycle

Be Unconstrained by Convention - Our only limits are the l