Test Engineer II

About UsAt 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.About The RoleAs a Test Engineer in Antares Mission Engineering team, you will design, build, and own test infrastructure for our R1 microreactor. You will develop end-to-end test plans - from concept to data analysis - for components and subsystems spanning heat rejection, power distribution, thermal management, and mechanical systems.You will help develop and document our testing best practices, requirements, and workflows to enable rapid iteration and high-quality data.You will collaborate with cross-functional teams to ensure that prototype, development, and qualification hardware is designed with respect to a test plan that validates critical features and performance parameters. You will design, validate, and maintain test setups to ensure the required precision and accuracy.Roles and Responsibilities:Architect, build, and employ bespoke test stands and rigs for R1 components and assembliesDevelop comprehensive test plans and protocols: instrumentation, execution steps, pass/fail criteria, and data analysis workflowsBuild test schedules and ensure alignment with development and business needsLead test design and readiness reviews and communicate approach and results with stakeholdersValidate measurement precision and accuracy; procure or design specialized fixtures and sensors as neededCreate schematics and CAD models of test setups and facilitiesDefine standard processes and workflows for prototype, qualification, and production-grade testingProvide subject matter expertise on test methods, including mentoring teammatesParticipate in root cause investigations and implement corrective actions to prevent repeat failureBasic Qualifications:Bachelor's degree in physics or an engineering discipline3+ years of hands-on test engineering experience designing and building test rigs and executing thermal and mechanical testsProven ability to architect and build test stands from scratchExperience designing assemblies and test fixtures using CADExperience integrating and using test instrumentation (pressure transducers, thermocouples, strain gauges, relays, solenoid valves, etc.)Experience with LabVIEW, Simulink, or similar test softwarePreferred Skills & Experience:Master's degree or higher in mechanical or aerospace engineeringExperience testing thermal management or heat-rejection systems, or vacuum-relevant componentsExperience in mechanical, durability, or materials testingLeadership experience on a project or research teamStrong project management and cross-disciplinary communication skillsDemonstrated track record of high-impact technical contributionsExperience with part inspection technologies (micrometers, CMM, white light scanning, etc.)Knowledge of PLM, ERP, and related manufacturing systemsStrong Python or general programming experienceAdditional Requirements:Ability to work long hours and weekends as necessary to support critical milestonesAbility to lift 50 lbsStanding, climbing, bending, grasping, pulling, pushing, and carrying may be required to perform job functionsTest Engineer II comp range - $115K - $150KSenior Engineer comp range - $140K - $185KLocationWe are located in Torrance, CA in a 145,000 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.CultureAt 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 systemObsess 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 cycleBe Unconstrained by Convention - Our only limits are the laws of physics. Many, even experts, will say what we are working on is impossible. They said the same about SpaceX reusing rockets. Generationally impactful companies, by definition, must accomplish the seemingly impossible. If it were easy, it would have already been done. Never shy away from a solution because it has never been tried before, and never choose to do something because that's "how it's always been done"Craftsmen - We also focus on the inputs. We aspire to high-quality engineering for its own sake. As such, we invest in personal growth, learning, and developing a long-term career path for exceptional individual contributors. We embrace a beginner's mindset, share knowledge, and never condescend the curiousLoyally Collaborative - Team > Self. We win together. There is nothing more precious than a high-performing teamEqual OpportunityAntares is an Equal Opportunity Employer. Employment decisions are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.ITAR RequirementsTo conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C.1157, or (iv) Asylee under 8 U.S.C.1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.Compensation Range: $112K - $185K