Founding Applied Research Engineer

The role

The Founding Applied Research Engineer will design and run research programs to solve problems in cost-efficient inference, signal classification, personalization grounding, and sequencing policy. You will build evaluation frameworks and work on agent memory, retrieval, and context systems to translate findings into production infrastructure.

What you will do

• Design and run research programs tied directly to the four core problems
• Build evaluation frameworks that measure trajectory quality
• Work on agent memory, retrieval, and context systems
• Translate findings into infrastructure with measurable production impact
• Help define where Rox Research goes next

Required qualifications

• Experience thinking about how agents fail in practice
• Experience building evaluation systems
• Ability to write code to implement ideas, run experiments, and ship to production
• Ability to move fast in a continuously shipping environment

Nice to have

• agent evaluation and behavioral benchmarking
• retrieval-augmented generation and knowledge graph systems
• RL applied to real-world agent behavior
• production ML systems (latency, reliability, observability)
• post-training and model adaptation for production use cases

Benefits

• Medical, dental, and vision, including 100% company-paid plans for you and eligible dependents
• Company-paid life & AD&D, plus short- and long-term disability
• 401(k) with automatic enrollment
• Unlimited PTO, plus paid sick leave, company holidays, and bereavement
• Up to 20 weeks of paid parental leave at 100% pay (birth, adoption, or foster)
• Wellness stipend: $375/quarter
• Learning stipend: up to $2,000/year
• Internet & cell phone stipend: $25/month
• Mental health support, virtual care, and care navigation
• Fertility & family-building support, plus backup care membership
• Pre-tax commuter benefits (transit & parking)
• SF HQ: daily catered breakfast & lunch, meal allowances, and rideshare support when commuting to the office

About the company

Rox builds a revenue operating system using autonomous revenue agents to manage the end-to-end customer lifecycle. The platform powers Global 2000 leaders and dominant AI winners.