Senior ML Engineer, Personalization & Recommender

Google LLC; Mountain View (CA); On-site; USD 174,000 - 252,000; Full time

Job summary

Google LLC is seeking a Senior Software Engineer, Machine Learning, Discover Interest Modeling in Mountain View. The role focuses on building scalable ML models for personalized recommendations, including understanding user interests and improving ranking quality across Discover and Search platforms.

Responsibilities include predictive modeling, vocabulary redesign, sequence-based modeling, offline evaluation, and cross-token training objective design.

Qualifications

• Bachelor’s degree or equivalent practical experience.
• 5 years of experience with machine learning algorithms and tools (e.g., TensorFlow), Recommender Systems, deep learning, or personalization.
• 3 years of experience testing, maintaining, or launching software products, and 1 year of experience with software design and architecture.
• 3 years of experience building and deploying recommendation systems models (retrieval, prediction, ranking, personalization, search quality, embedding) in production, and experience building architecture.
• Experience with deep learning architectures and related algorithms (e.g., Transformers).

Responsibilities

• Add predictive modeling of the interests and creators a user will engage with next. Train with multi-objective goals (engagement, satisfaction).
• Redesign the interest vocabulary for much higher precision, and evaluate learned alternatives to today’s interest vocab.
• Build deep, sequence-based token models that learn from long user activity histories across Google products.
• Build offline evaluation that predicts online results (profile-quality autoraters, retrieval and ranking metrics), and run well-sliced live experiments.
• Design a shared token description, feature set, and training objectives across token types.

Skills

Machine learning

Recommender systems

Deep learning

Software testing

Software design

Software architecture

Transformers

Education

Master's degree

PhD (preferred)

Data structures & algorithms

Job description

Google LLC is seeking a Senior Software Engineer, Machine Learning, Discover Interest Modeling in Mountain View. The role focuses on building scalable ML models for personalized recommendations, including understanding user interests and improving ranking quality across Discover and Search platforms.

Responsibilities include predictive modeling, vocabulary redesign, sequence-based modeling, offline evaluation, and cross-token training objective design.