pony.ai
Machine Learning Engineer - Reinforcement Learning
$150K–$250K
Fremont, California · Full-time · Posted Oct 26, 2026
- Education
- M.S. or Ph.D. in Computer Science, Machine Learning, AI, or a related field—or equivalent practical experience.
About the job
Build reinforcement-learning and generative-model systems to evaluate autonomous-driving behavior, improve analysis workflows, and assess fleet performance at scale.
What you'll do
- Develop scalable training and fine-tuning systems and RL methods for realistic driving behaviors and simulation-aligned evaluation.
- Build and operate production ML models and data/evaluation loops for behavior triage, anomaly detection, and fleet-scale performance assessment.
- Partner with Prediction, Planning, Research, and platform teams to deliver cross-cutting improvements with measurable outcomes.
What they ask for
- M.S. or Ph.D. in Computer Science, Machine Learning, AI, or a related field—or equivalent practical experience.
- Production-grade ML experience with a strong RL component, such as policy learning, preference/feedback optimization, or offline/online RL pipelines.
- Depth in deep learning, sequence modeling, and generative models; experience with large-scale distributed training and data processing.
- Demonstrated impact through strong publications or end-to-end delivery of impactful ML systems.
Nice to have
- Background in autonomous vehicles, robotics, or complex simulation environments.
- Experience with modern RL and post-training techniques, simulation-platform integration, or metrics for safety-critical AI systems.
Pay
$150,000 - $250,000 USD base salary
Tools
LLM, VLM, RLHF, dLLM, VLA, Python, PyTorch
AI focus
Applies reinforcement learning, generative models, and LLM/VLM methods to generate and evaluate driving behaviors, automate behavior analysis, and improve autonomous-driving performance assessment.
Model-written summary · the original posting is authoritative