Posted in

Senior AI Engineer

Senior AI Engineer

CompanyProofpoint
LocationToronto, ON, Canada
Salary$Not Provided – $Not Provided
TypeFull-Time
DegreesBachelor’s
Experience LevelSenior, Expert or higher

Requirements

  • 8+ years of experience in software engineering, with a strong emphasis on AI/ML.
  • 4+ years of hands-on experience working with transformer models or NLP.
  • Experience with one or more of the following AI/ML frameworks and libraries is desired: TensorFlow, PyTorch, and Hugging Face Transformers.
  • Expertise in selecting and applying transformer models for text classification problems.
  • Experience with prompt engineering, vector-based retrieval, and embedding models.
  • Strong understanding of AI cost structures, including model inference costs and optimization strategies.
  • Previous experience designing and implementing experiments to measure model efficacy.
  • Strong background in Cloud, Containers, Java and Linux-based architectures.
  • Well-versed in Agile/Scrum development processes.
  • Excellent communication and problem-solving skills.
  • Degree in Computer Science, AI/ML, or a related field.

Responsibilities

  • Establish a clear AI/ML vision, build support across cross-functional teams, and drive high-impact AI initiatives to completion.
  • Develop and deploy transformer-based models for classification tasks, leveraging pre-trained models, fine-tuning techniques, and embedding-based retrieval.
  • Evaluate generalized/base models for low true-positive classification problems and design methods to improve performance.
  • Implement prompt-based classification techniques and vector-based retrieval to improve accuracy and efficiency.
  • Design and conduct experiments to measure model efficacy, balancing performance with computational costs.
  • Research available AI/ML technologies and help make informed build vs. buy decisions.
  • Ensure AI solutions are scalable, secure, and aligned with enterprise best practices.
  • Stay current with the latest advancements in transformers, LLMs, and AI-driven text classification.

Preferred Qualifications

  • Experience working with Azure Machine Learning API and AWS Bedrock is a plus.
  • Familiarity with LLMOps and deploying models in production environments.
  • Understanding of data pipelines and distributed AI processing.