Rune Technologies

Job Summary:
Rune Technologies builds mission-critical software for military logistics and sustainment. As a Backend Software Engineer, you will design and implement production GenAI systems to support advanced logistics algorithms and modern AI-enabled software for military applications.
Responsibilities:
• Design, build, and deploy production-grade GenAI systems -- including RAG architectures, vector databases, LLM integrations, and tool-call frameworks -- in support of Saga, Rune's AI agentic product layer.
• Build and maintain evaluation and testing harnesses to validate LLM output quality and catch regressions in production.
• Collaborate with the broader platform and product teams to integrate AI capabilities into TyrOS workflows.
• Participate in technical design discussions and code reviews, contributing to a culture of engineering rigor and mission focus.
• Triage and debug issues in production, ensuring reliability and rapid iteration in support of operational needs.
• Work closely with engineers, product managers, and military stakeholders to ensure AI systems meet real-world sustainment requirements.
Qualifications:
Required:
• 4+ years of experience in software engineering, with a strong backend foundation -- distributed systems, APIs, production-grade software.
• Hands-on experience building GenAI systems: vector databases, LLM integration, RAG architectures, and evaluation harnesses for LLM output.
• Familiarity with tool routing, tool-call validation, and common LLM failure modes.
• Understanding of the science underlying the systems you build -- not just how to wire them together, but why they work and where they break.
• Background at an AI-native company, or a clear transition from backend engineering into AI specialization.
• Strong sense of ownership and a bias for action.
Preferred:
• Experience with fine-tuning or model evaluation workflows.
• Familiarity with AI infrastructure: embedding pipelines and inference optimization.
• Experience working on software in defense, aerospace, or other complex operational domains.
• Experience deploying software to production environments, including cloud (AWS, Kubernetes) and edge infrastructure.
Company:
Rune Technologies develops AI-enabled predictive logistics solutions for military operations. Founded in 2024, the company is headquartered in Arlington, USA, with a team of 51-200 employees. The company is currently Growth Stage.