Backend Software Engineer - Simulations

About The Role

At Rune Technologies, you will be part of a high‑impact team working at the intersection of advanced logistics algorithms, modern AI‑enabled software, and complex system integrations—all in support of the warfighter at the tactical edge. You will own the simulations workstream within TyrOS, working closely with our forecaster lead and the broader platform team to build production software that models, predicts, and reasons about logistics outcomes in complex operational environments.

• Build and own production‑grade simulation and forecasting software, with a primary focus on Rune’s logistics forecaster.
• Work with mathematical models, numerical methods, and scientific formulas to implement software where correctness is defined by the underlying physics or math, not just user acceptance.
• Collaborate closely with the forecaster lead and platform team to integrate simulation 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 simulation and forecasting systems meet real‑world sustainment requirements.

• 4+ years of experience in software engineering, with demonstrated experience building software in a scientific or mathematically complex domain: sensor algorithms, motion planning, simulation, forecasting, or similar.
• Ability to work with mathematical models and numerical methods in code; comfort reasoning about correctness in terms of physics or math, not just software behavior.
• Proficiency in Python, C++, or Go.
• Strong software engineering foundation – this role requires production‑quality engineering, not analysis or research.
• Math or science background, through degree, graduate work, or professional domain experience.
• Strong sense of ownership and a bias for action.

• Experience at a defense‑adjacent autonomous systems company in a hands‑on engineering capacity.
• Degree or graduate degree in a scientific field such as physics, applied mathematics, aerospace, or mechanical engineering.
• Familiarity with numerical simulation frameworks or scientific computing libraries.
• Experience deploying software to production environments, including cloud (AWS, Kubernetes) and edge infrastructure.

Rune offers a full suite of insurance options at no cost for employees and low‑cost options to spouses and dependents. Highly competitive equity grants are also included in the majority of full‑time offers.

• 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.
• Paid time off based on need, not accrual.
• 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.