Agentic Modeling & Simulation Engineer in Mission Planning

Mosaic.tech; Costa Mesa (CA); On-site; USD 191,000 - 292,000; Full time

Job summary

Anduril is seeking a full‑stack software engineer to build agentic modeling and simulation systems for operational planning. This role sits at the intersection of AI, backend systems, and mission software, enabling humans and AI agents to author scenarios, task simulations, and evaluate courses of action in near real time.

You will shorten military planning cycles by applying physics-backed simulation and AI-assisted planning directly to operators, with responsibilities spanning API design,

Qualifications

• Backend software engineer with experience building APIs or stateful systems.
• Experience with AI/ML or LLM-powered software including tool calling.
• Proficiency in Python or Go.
• A degree in Computer Science, Software Engineering, Mathematics, Physics, or a related technical field.
• Ability to work with operators, warfighters, and SMEs to derive requirements.
• Strong judgment around reliability, safety, observability, and debugging for AI systems.
• Eligible to obtain and maintain an active U.S. Top Secret security clearance.

Responsibilities

• Build agentic workflows that expose modeling and simulation capabilities via APIs and operator-facing products.
• Design multi-agent architectures modeling decision-making, adversary responses, constraints, and tradeoffs.
• Integrate LLM tool use, function calling, retrieval, planning loops, evaluation hooks, and guardrails with simulation engines and backends.
• Build backend services for scenario creation, entity tasking, simulation state retrieval, COA generation, plan comparison, and real-time analysis.
• Collaborate with warfighters and domain experts to translate workflows into reliable software.
• Improve observability, reproducibility, and evaluation for agent behavior and recommendations.
• Learn and apply DoD modeling and simulation tools such as AFSIM and STORM.

Skills

Backend engineering

AI/ML development

Python

Go

Tool calling

API design

Reliability & observability

Education

CS/Software Eng/Math/Physics degree

Tools

gRPC/protobuf

Kubernetes

Containerization

Distributed systems

Job description

Anduril is seeking a full‑stack software engineer to build agentic modeling and simulation systems for operational planning. This role sits at the intersection of AI, backend systems, and mission software, enabling humans and AI agents to author scenarios, task simulations, and evaluate courses of action in near real time.

You will shorten military planning cycles by applying physics-backed simulation and AI-assisted planning directly to operators, with responsibilities spanning API design,