Software Engineer, Agent Platform

Andurils Lattice software platform integrates together many sensors into a single cohesive view of the world providing needed context for our users. Andurils Frontier AI team builds edge-compatible generative AI systems into the Lattice software platform to provide features and products that improve autonomy and reduce cognitive burden on the warfighter. Specific applications include but are not limited to automating mission planning battle-space understanding voice-control of assets and enabling higher-levels of autonomy.

Frontier AI is looking for a backend software engineer to own and evolve our internal LLM agent framework. This role sits at the intersection of backend infrastructure applied AI agent architecture model post-training and evaluation tooling. You will build the platform that enables teams across Anduril to develop evaluate and deploy reliable LLM agents in mission-critical environments.

WHAT YOULL DO

• Own Andurils internal LLM agent framework including core abstractions runtime architecture developer experience integrations and reliability.
• Support multiple business lines building LLM agents by providing new framework capabilities implementation guidance architectural reviews and best-practice patterns.
• Partner with machine learning teams to make model post-training workflows easy to integrate ranging from supervised fine-tuning to offline RL online RL and environment-driven agent improvement.
• Design tooling that supports modern agent patterns including structured tool calling filesystem-using agents memory and retrieval planning loops subagents agent graphs and human-in-the-loop workflows.
• Work with partner teams to define comprehensive evaluation suites that measure task success tool-call correctness trajectory quality robustness regressions and deployment readiness.
• Stay current on emerging agent architecture and evaluation trends and make pragmatic decisions about which techniques should or should not be adopted internally.

• Strong backend engineering experience building production-quality platforms frameworks APIs or infrastructure used by other engineers.
• Deep expertise in LLM agent framework design including the tradeoffs between different orchestration patterns such as linear agents graph-based agents multi-agent systems planner/executor loops and tool-heavy agents.
• Experience designing agent evaluation paradigms including trajectory evaluations LLM-as-judge workflows task-success metrics tool-call correctness checks rubric-based qualitative grading adversarial scenario testing regression eval suites and human-in-the-loop review.
• Familiarity with model post-training workflows such as SFT preference tuning reinforcement learning and environment-based agent training.
• Strong judgment around reliability observability debugging and safety for LLM applications deployed in high-stakes settings.
• Ability to work directly with partner teams understand ambiguous product needs and turn them into reusable platform capabilities.

• Experience with agent frameworks like Langchain Deepagents Claude SDK etc.
• Experience building evaluation platforms simulation environments benchmark suites or agent test harnesses.
• Experience with Kubernetes Docker distributed systems workflow orchestration or ML infrastructure.
• Familiarity with defense robotics command-and-control systems autonomy or operational planning domains.

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 Andurils total compensation package. Additionally Anduril offers top-tier benefits for full-time employees including:

At Anduril we invest in our people. Our comprehensive competitive benefits package (available at little to no cost to employees) ensures youre supported in health recovery and whatever comes next.For more information Explore Our Benefits.

To view Andurils candidate data privacy policy please visit submitting your application you consent to Anduril Industries using a third-party service provider to conduct pre-employment risk integrity and due diligence screening and assessing potential risks as part of your application process. This third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists adverse media public-record information and other lawful open-source or commercial data sources. This third-party service provider does not act as a consumer reporting agency. Use of this provider helps to ensure compliance with applicable laws and protect technology intellectual property and organizational security.