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Posted on 2026/09/28

AI Engineer (Remote | $80–$140/hr)

Synthires

San Francisco, CA, United States

Contractor

Position: Machine Learning Engineer

Type: Contractor

Compensation: $80–$140/hour

Location: Remote

About the Opportunity

We are seeking experienced Machine Learning Engineers to contribute to a project focused on developing, evaluating, and improving next-generation AI systems.

In this role, you will leverage your expertise in machine learning, data analysis, and model development to help create high-quality training data and improve the performance of advanced AI models.

This opportunity is ideal for professionals with hands-on experience building machine learning solutions, working with large datasets, and deploying scalable ML workflows.

You will work on real-world machine learning challenges involving model training, evaluation, experimentation, and data-driven problem-solving.

The work is fully remote, flexible, and centered on practical machine learning applications. No prior AI training or evaluation experience is required.

Key Responsibilities

  • Design, develop, and refine machine learning models using Python and relevant ML frameworks.
  • Analyze large datasets and utilize MongoDB for efficient data storage, retrieval, and management.
  • Build and optimize data pipelines, preprocessing workflows, and feature engineering processes.
  • Evaluate model performance using appropriate metrics, benchmarking techniques, and validation methodologies.
  • Conduct hyperparameter tuning and experimentation to improve model accuracy and efficiency.
  • Collaborate with project contributors to identify opportunities for model enhancement and implementation.
  • Document methodologies, experiments, results, and technical decisions to ensure reproducibility.
  • Deliver actionable insights and recommendations based on machine learning outcomes and data analysis.
  • Support workflow improvements across training, evaluation, and inference processes.

Required Qualifications

  • Strong proficiency in Python.
  • Experience building and training machine learning models.
  • Strong understanding of machine learning concepts, model evaluation, and statistical analysis.
  • Experience working with large datasets and data preprocessing workflows.
  • Knowledge of feature engineering, model validation, and performance optimization techniques.
  • Strong analytical and problem-solving skills.
  • Excellent written communication and technical documentation abilities.
  • Ability to work independently in a remote environment.

Preferred Qualifications

  • Deep familiarity with machine learning frameworks such as Scikit-learn, TensorFlow, or PyTorch.
  • Hands-on experience with MongoDB for data manipulation, storage, and retrieval.
  • Experience deploying or operationalizing machine learning models in production environments.
  • Familiarity with cloud platforms, MLOps workflows, and scalable ML infrastructure.
  • Experience building automated data pipelines and machine learning workflows.
  • Strong understanding of experimentation, benchmarking, and model performance analysis.
  • Ability to adapt quickly to evolving project requirements and collaborate effectively in remote teams.

Compensation

  • $80–$140/hour
  • Remote contract engagement
  • Flexible schedule
  • Project-based work

Additional Details

  • Fully remote opportunity.
  • 35 openings available.
  • Flexible workload with no fixed schedule.
  • Applications reviewed on a rolling basis.
  • No prior AI experience required.
  • Work involves real-world machine learning development, evaluation, experimentation, and optimization tasks.