Rune Technologies

Backend Software Engineer - GenAI

Rosslyn, VA · Contract

Sponsorship not specifiedDetected 62 days ago

Distributed SystemsAlgorithmsCode ReviewVector DatabasesAWSKubernetesLLMsRAGLogisticsInventory Management

About the role

You'll join us in our mission to bring 21st-century software to the sustainment domain -- modernizing inventory management, transportation optimization, and predictive maintenance with state-of-the-art user experiences.
You'll work closely with a team of experienced engineers, product designers, and operational experts who care deeply about delivering real-world impact.
This is a backend engineering role first: we're looking for someone who has built real AI systems from the ground up, worked closely with engineers and operational experts, and cares about shipping software that actually works in the field.

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.
As a Backend Software Engineer focused on Saga -- Rune's AI agentic layer within TyrOS -- you will own the design and implementation of production GenAI systems that bring intelligent, autonomous capability to the sustainment domain.

4+ years of experience in software engineering, with a strong backend foundation -- distributed systems, APIs, production-grade software.
Familiarity with tool routing, tool-call validation, and common LLM failure modes.
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.
Hands-on experience building GenAI systems: vector databases, LLM integration, RAG architectures, and evaluation harnesses for LLM output.
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

Highly competitive equity grants are also included in the majority of full time offers and are considered part of Rune's total compensation package.

Rune offers top-tier benefits for full-time employees to include a full suite of insurance options at no cost for employees and low-cost to spouses and dependents.
Highly competitive equity grants are also included in the majority of full time offers and are considered part of Rune's total compensation package.
Benefits include:
Comprehensive medical, dental, and vision plans
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

This listing is sourced directly from Rune Technologies's careers page and normalized into a canonical job model.