AI Research Engineer
Core
Design and deploy custom AI models, retrieval, memory, and evaluation systems that run in production for arbitr's platforms and clients.
Role type
Senior IC AI Research Engineer (production-focused)
Builds
Custom LLMs, retrieval/memory/orchestration systems, benchmark tooling, and GPU infrastructure
Domain
AI/ML, Enterprise Software, Data Science
Deliverable
production ML models
Required skills
Model training from scratch (LoRA, PT, RL), Python, dataset design, experiment design, evaluation framework building, GPU infrastructure management
Preferred skills
Reinforcement learning, inference optimization, architecture review, strategic partner engagement
Technologies
Python, LoRA, PT, reinforcement learning, GPU infrastructure
Responsibilities
Build custom models end-to-end from experiments to production; Develop retrieval, memory, and reasoning systems; Create benchmark tooling for model evaluation; Track and integrate new research techniques; Deploy and monitor models at scale on GPU infrastructure; Provide technical guidance to product and engineering teams
Seniority
Senior, hands-on IC