Senior Machine Learning Engineer (Recommender Systems)

Fully remote | Complete engagement job Founded in Palo Alto by Dr. S. companies build and scale world-class AI, ML, and Data teams, powered by the top 1% of LATAM talent, with a defining purpose: To empower brilliant humans, unleash their potential, and amplify their impact in the world.

At Factored, you’ll be part of a community that values learning, ownership, and authenticity, where your growth is personal and your ideas matter. We’re transparent, curious, and collaborative. We strive for excellence, celebrate diversity, encourage curiosity, and build an environment where you can truly thrive.

We are seeking a Senior Machine Learning Engineer who is passionate about building state-of-the-art recommender systems and leveraging Generative AI. You'll work with large-scale data using tools like Databricks and Spark, contributing to innovative AI solutions that enhance personalized experiences while being part of a supportive, dynamic, and collaborative team. In return, you will be rewarded with an amazing team that supports you, a rich culture, shared success, and the flexibility to work– from the comfort of your home.

Responsibilities

: Design and implement recommender systems to improve product discovery and enhance customer engagement across digital and physical platforms. Build and manage scalable machine learning pipelines for data processing, feature engineering, model training, and deployment using tools like Databricks and Spark. , AutoRec), and deep sequential models like GRU4Rec.

Collaborate closely with software engineers, data scientists, and business stakeholders to integrate models into production systems and solve real-world business challenges. Monitor, maintain, and continuously enhance deployed models to ensure reliability, accuracy, and alignment with evolving business needs. Stay informed on the latest advancements in machine learning, recommender systems, deep learning, and Generative AI to drive innovation and improvement.

Qualifications

: Bachelor's or Master's degree in Computer Science, Engineering, Mathematics, or a related field. 5+ years of proven experience as a Machine Learning Engineer, demonstrating successful development and deployment of Machine Learning models. Minimum 1 year of hands-on experience designing, building, and deploying recommender systems .

This is a must-have requirement. S olid understanding and application of machine learning techniques relevant to recommendation systems, including but not limited to Wide Deep models, Two-Tower models, Transformers, embeddings, neural networks, autoencoders (AutoRec), and deep sequential models (GRU4Rec) Extensive experience handling large-scale data processing and analysis using Spark/PySpark within Databricks, including its native platform services. Solid understanding of machine learning algorithms, deep learning, and statistical modeling techniques.

Strong knowledge of experimental design, A/B testing, and performance evaluation metrics for machine learning solutions. , AWS, Azure, GCP) and containerization (Docker) is a plus. Excellent verbal and written communication skills in English.

Benefits

: Ownership through equity participation. Annual company retreat. Education bonus for continuous learning.

Company-wide winter break. Paid time off. Optional in-person events and meetups.

Tailored career roadmaps. High-performance culture.