Principal Machine Learning Engineer

To shape the future of machine learning across a dynamic Performance Marketing business, the full-time remote Principal Machine Learning Engineer will build and evolve production ML systems that drive outcomes in ranking, rewards, and optimization while directly influencing revenue and user value. Key responsibilities Lead the design, build, and evolution of production ML algorithms and systems that drive real business outcomes Establish robust experimentation and measurement frameworks, including offline evaluation and A/B testing Partner closely with cross-functional teams to create reliable data foundations and connect ML work to business priorities Required qualifications 8+ years of experience in software engineering, machine learning engineering, MLOps, or related technical fields 5+ years building, deploying, and supporting production ML systems at scale Strong experience in AdTech, MarTech, or Performance Marketing Proven experience designing, shipping, and operating production ML systems end to end Strong understanding of offline/online ML architecture, feature engineering, and experimentation frameworks