Senior LLM Software Engineer

Company: Anduril Industries
Location: Costa Mesa
Posted on: April 1, 2026

Job Description:

ABOUT THE JOB: AI is the future operating system of Anduril, and we need creative and enthusiastic AI engineers to help us realize that vision. We’re seeking a highly motivated Senior Software Engineer to join a scrappy team dedicated to the continued development of our internal AI ecosystem, including tooling for autonomous coding and agentic automation. To succeed on this team you will need to be curious, an excellent communicator, of a strong product mindset, be able to go from idea to implementation, and take ownership and pride in your work. WHAT YOU’LL DO: Propose, prototype, and deploy LLM-based agentic systems that help solve real world problems, leveraging the latest state-of-the-art techniques in the field Work cross-functionally with different business lines across Anduril to help discover and scope new solutions Develop and maintain data pipelines, feature engineering workflows, and model-serving components that support applied AI use cases across the yard. Learn and evangelize. You will be an expert on current AI technologies and trends (and their practical applications) REQUIRED QUALIFICATIONS: An AI mindset; enthusiasm for emerging AI technologies and their practical implementations Creative problem-solving skills with an ability to simplify workflows into modular, reusable automation components Raw intellectual horsepower 1-2 years of experience taking AI systems into production or 2-4 years of experience with traditional ML Degree in Computer Science, Information Systems, Electrical Engineering or related technical degree Experience using and optimizing AI coding assistants in a collaborative production environment Strong stakeholder and cross-functional communication skills; able to gather workflow requirements and convert them into technical automation. Eligible to obtain and maintain an active U.S. Secret security clearance PREFERRED QUALIFICATIONS: Practical experience enabling agents, skills, MCP, and other emerging AI technologies in professional environment Experience with process automation, event-driven architecture, and a modular / “unix daemon” mindset on software Experience in hyper growth startup-like environments, with demonstrated success in scaling and maturing software development processes Familiarity with AWS Use your cover letter to demonstrate how and why you’re enthusiastic about AI US Salary Range $191,000 - $287,000 USD The salary range for this role is an estimate based on a wide range of compensation factors, inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations. Highly competitive equity grants are included in the majority of full time offers; and are considered part of Anduril's total compensation package. Additionally, Anduril offers top-tier benefits for full-time employees, including: Healthcare Benefits US Roles: Comprehensive medical, dental, and vision plans at little to no cost to you. UK & AUS Roles: We cover full cost of medical insurance premiums for you and your dependents. IE Roles: We offer an annual contribution toward your private health insurance for you and your dependents. Additional Benefits Income Protection : Anduril covers life and disability insurance for all employees. Generous time off : Highly competitive PTO plans with a holiday hiatus in December. Caregiver & Wellness Leave is available to care for family members, bond with a new baby, or address your own medical needs. Family Planning & Parenting Support: Coverage for fertility treatments (e.g., IVF, preservation), adoption, and gestational carriers, along with resources to support you and your partner from planning to parenting. Mental Health Resources: Access free mental health resources 24/7, including therapy and life coaching. Additional work-life services, such as legal and financial support, are also available. Professional Development: Annual reimbursement for professional development Commuter Benefits: Company-funded commuter benefits based on your region. Relocation Assistance: Available depending on role eligibility. Retirement Savings Plan US Roles: Traditional 401(k), Roth, and after-tax (mega backdoor Roth) options. UK & IE Roles: Pension plan with employer match. AUS Roles: Superannuation plan. The recruiter assigned to this role can share more information about the specific compensation and benefit details associated with this role during the hiring process. Protecting Yourself from Recruitment Scams Anduril is committed to maintaining the integrity of our Talent acquisition process and the security of our candidates. We've observed a rise in sophisticated phishing and fraudulent schemes where individuals impersonate Anduril representatives, luring job seekers with false interviews or job offers. These scammers often attempt to extract payment or sensitive personal information. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process. Our legitimate recruitment is entirely free for candidates. Please always verify communications: Direct from Anduril: If you receive an email from one of our recruiters, it will only come from an @anduril.com address. Via Agency Partner: If contacted by a recruiting agency for an Anduril role, their email will clearly identify their agency. If you suspect any suspicious activity, please verify the agency's authenticity by reaching out to contact@anduril.com . Exercise Caution with Unsolicited Outreach: If you receive any communication that appears suspicious, contains grammatical errors, or makes unusual requests, do not engage. Always confirm the sender's email domain is @anduril.com before providing any personal information or clicking on links. What to Do If You Suspect Fraud: Should you encounter any questionable or fraudulent outreach claiming to be from Anduril, please report it immediately to contact@anduril.com . Your proactive caution is invaluable in protecting your personal information and upholding the security and trustworthiness of our recruitment efforts. Data Privacy To view Anduril's candidate data privacy policy, please visit https://anduril.com/applicant-privacy-notice/ .

Keywords: Anduril Industries, Santa Ana , Senior LLM Software Engineer, IT / Software / Systems , Costa Mesa, California