Backend Software Engineer - GenAI

About The Role

Rune Technologies builds mission-critical software for military logistics and sustainment. The U.S. military and its allies face a real logistics modernization problem. We are building the software to solve it.

Qualifications

• 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.

Desired Qualifications

• 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.

Benefits

• Comprehensive medical, dental, and vision plans; premiums 100% covered by Rune for all employees; exceptionally low premiums for spouses and dependents.
• Basic life insurance and disability 100% covered for all employees by Rune; option to purchase additional life insurance available.
• ‘Take the time off that you need, when you need it’ paid time off, not accrual based.
• Generous company holiday calendar including a holiday shutdown in December.
• Supportive leave of absence program including time off for military service, medical events, and parental leave.
• Full 401(k) retirement plan for all full-time eligible employees.
• Company-funded commuter benefits.
• Free access to on-site gym at office.