> Markdown version of [/jobs/ext/2000530-software-engineer-agent-platform](https://www.wearedevelopers.com/jobs/ext/2000530-software-engineer-agent-platform). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer, Agent Platform - **Company:** Anduril Industries - **Location:** Washington, DC, United States - **Salary:** $220,000.0 - $292,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Software Debugging, Distributed Systems, Machine Learning, Systems Integration, Workflow Management Systems, Reinforcement Learning, Large Language Models, Multi-Agent Systems, Kubernetes, Machine Learning Operations, Docker - **Published:** August 9, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9084131/software-engineer-agent-platform ## About the Role * 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. ## Description * Own Anduril's 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., 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. 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