Principal Machine Learning Engineer, Data Mining

Job overview

The Principal Machine Learning Engineer, Data Mining role is onsite in Boston, MA, with a stated base salary range of $240,000–$330,000 per year. The role supports Motional’s Omnitag multimodal data-mining framework, which helps autonomous vehicles discover important scenarios and model errors. This technical leader sets the data-mining machine learning roadmap and builds systems that adapt, align, and optimize multimodal models for Motional’s autonomy stack. The work advances edge-case discovery, model-error diagnosis, and efficient integration of new discovery capabilities into autonomous vehicle development.

What you'll do

• Define the multi-year machine learning roadmap for Omnitag
• own machine learning data pipelines and the active-learning loop
• align and distill multimodal models
• architect large-scale systems for autonomous vehicle logs
• optimize fine-tuning and inference
• build reinforcement-learning-driven reasoning systems
• manage reliability and cloud footprint
• coordinate with Autonomy and Infrastructure teams
• guide up to three engineers
• and mentor the team.

What we're looking for

Skills & competencies

principal machine learning engineer

data mining

boston ma

motional

omnitag

multimodal machine learning

autonomous vehicles

foundation models

active learning

large-scale ml systems

$240,000–$330,000/year

medical dental vision

401(k) match

pet insurance

Work arrangement

• Weekend coverage required

Benefits & perks

• Benefits may include medical, dental and vision insurance, 401(k) with company match, health savings accounts, life insurance, and pet insurance.

Why this role

The posting requires 12+ years of hands-on machine learning engineering experience and experience owning enterprise-scale ML systems. It describes a hands-on player-coach role guiding up to three engineers.

About the employer

Motional is hiring for this role. Industry: Engineering Services. Sector: 54.