Machine Learning Engineer - Expert

Mercor connects elite creative and technical talent with leading AI research labs. The company is headquartered in San Francisco and has notable investors including Benchmark, General Catalyst, Peter Thiel, Adam D'Angelo, Larry Summers, and Jack Dorsey.

Location: Remote

Salary: $90/hour

Responsibilities

• Develop end-to-end machine learning solutions for challenging prediction and modeling problems.
• Analyze datasets and define appropriate modeling approaches, validation strategies, and evaluation metrics.
• Perform exploratory data analysis, feature engineering, and data preprocessing.
• Train, tune, and evaluate machine learning models across tabular, text, image, and time-series datasets.
• Review and validate the technical quality of machine learning projects and deliverables.
• Identify opportunities to improve model performance through systematic experimentation and iteration.

Requirements

• Master's degree or PhD in Computer Science, Machine Learning, Statistics, Mathematics, Electrical Engineering, or a related field from a top-tier university.
• 2+ years of professional experience in machine learning, applied AI, data science, or a closely related field.
• Strong proficiency in Python and modern machine learning frameworks (e.g., scikit-learn, XGBoost, LightGBM, PyTorch, TensorFlow).
• Demonstrated experience building end-to-end machine learning solutions, including data preparation, model development, validation, and evaluation.
• Strong understanding of model evaluation metrics, validation methodologies, and experimental design.
• Experience with one or more of the following areas: tabular machine learning, natural language processing, computer vision, recommendation systems, ranking systems, time-series forecasting.
• Ability to work independently on open-ended machine learning problems and deliver high-quality technical outputs.