Machine Learning Engineer - Reinforcement Learning
- Pay
- $150,000 – $250,000 per year
- Location
- Fremont, CA · On-site
- Job type
- Full-time
- Level
- Senior
- Education
- Master's degree
- Listed
- 13 days ago
Skills & highlights for this role
- Machine Learning
- Reinforcement Learning
- Deep Learning
- Sequence Modeling
- Generative Models
- Large-Scale Distributed Training
- Large-Scale Data Processing
- Production ML Systems
Also useful
- Autonomous Vehicles
- Robotics
- Simulation Platforms
- Post-training techniques for LLM/VLA/video generation
- Python
- PyTorch
- Safety-critical AI metrics
- Technical leadership
About the role
Founded in 2016 in Silicon Valley, Pony.ai has quickly become a global leader in autonomous mobility and is a pioneer in extending autonomous mobility technologies and services at a rapidly expanding footprint of sites around the world.
Operating Robotaxi, Robotruck and Personally Owned Vehicles (POV) business units, Pony.ai is an industry leader in the commercialization of autonomous driving and is committed to developing the safest autonomous driving capabilities on a global scale. Pony.ai's leading position has been recognized, with CNBC ranking Pony.ai #10 on its CNBC Disruptor list of the 50 most innovative and disruptive tech companies of 2022.
In June 2023, Pony.ai was recognized on the XPRIZE and Bessemer Venture Partners inaugural "XB100" 2023 list of the world's top 100 private deep tech companies, ranking #12 globally. As of August 2023, Pony.ai has accumulated nearly 21 million miles of autonomous driving globally. Pony.ai went public at NASDAQ in November 2024.
Responsibility
- Build scalable systems for training and fine-tuning large generative models that produce realistic, informative driving behaviors for evaluation and scenario coverage.
- Implement and iterate on RL-style methods: algorithms, reward / preference objectives, and training setups suited to high-fidelity, insightful behaviors in simulation-aligned workflows (closed-loop evaluation mindset).
- Ship deep learning solutions (including LLM / VLM where appropriate) that improve human-led triaging, automate high-volume workflows, and support nuanced analysis of self-driving behavior to surface critical anomalies.
- Own production-oriented ML for fleet-scale assessment: training, optimization, monitoring, and iteration of models used to judge performance across large real-world exposure.
- Design and evolve data + evaluation systems inspired by RL from human preferences (RLHF) and related paradigms-turning preference/judgment signals into repeatable, scalable training and evaluation loops.
- Partner broadly with teams such as Prediction, Planning, Research, and platform/engineering leads to land cross-cutting improvements with clear metrics.
Requirements & Qualifications
- M.S. or Ph.D. in Computer Science, Machine Learning, AI, or a related field-or equivalent practical experience.
- Hands-on experience building and applying ML in production-grade settings, with a strong RL component (policy learning, preference/feedback optimization, or offline/online RL pipelines).
- Depth in deep learning, sequence modeling, and generative models.
- Demonstrated impact via strong publications or a clear history of shipping impactful ML systems end-to-end.
- Experience with large-scale distributed training and large-scale data processing.
- Ability to lead ambiguous technical work from problem framing through reliable delivery.
Preferred
- Background in autonomous vehicles, robotics, or complex simulation environments.
- Strong grasp of modern RL and post-training techniques in LLM, dLLM, VLA and video generations.
- Hands-on integration of simulation platforms with ML training and evaluation workflows.
- Python fluency and frameworks such as PyTorch
- Experience defining and operating metrics for complex, safety-critical AI systems.
- Technical leadership: influencing stakeholders, aligning teams, and raising the bar for evaluation rigor.
- Excellent communication-simple explanations of complex trade-offs.
Base Salary Range
$150,000 - $250,000 Annually
Compensation may vary outside of this range depending on many factors, including the candidate's qualifications, skills, competencies, experience, and location. Base pay is one part of the Total Compensation and this role may be eligible for bonuses/incentives and restricted stock units.
Benefits
Also, we provide the following benefits to the eligible employees:
- Health Care Plan (Medical, Dental & Vision)
- Retirement Plan (Traditional and Roth 401k)
- Life Insurance (Basic, Voluntary & AD&D)
- Paid Time Off (Vacation & Public Holidays)
- Family Leave (Maternity, Paternity)
- Short Term & Long Term Disability
- Free Food & Snacks
Please click here for our privacy disclosure.
From pony.ai's careers page, first listed on Rolev.ai on October 27, 2026. Rolev.ai is not the employer.
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Common questions
What is the salary for the Machine Learning Engineer - Reinforcement Learning role at pony.ai?
The Machine Learning Engineer - Reinforcement Learning posting at pony.ai states compensation of $150,000 – $250,000 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on pony.ai's official career site.
Where is the Machine Learning Engineer - Reinforcement Learning job at pony.ai located?
This Machine Learning Engineer - Reinforcement Learning position at pony.ai is located in Fremont, CA (On-site). Always check pony.ai's application page for specific state eligibility or relocation policies.
What qualifications are required for Machine Learning Engineer - Reinforcement Learning at pony.ai?
For the Machine Learning Engineer - Reinforcement Learning role, pony.ai highlights a master's degree; experience with Machine Learning, Reinforcement Learning, Deep Learning, Sequence Modeling, Generative Models, Large-Scale Distributed Training. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Machine Learning Engineer - Reinforcement Learning position at pony.ai?
This listing links directly to pony.ai's Workable application page. You can apply directly on pony.ai's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Workable application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.