Applied Scientist II

Microsoft Microsoft · Big Tech · Montreal, QC +3 · Applied Sciences

This role focuses on building and evolving the core orchestration and intelligent systems that power Microsoft's enterprise Copilot, a large-scale AI assistant for Microsoft 365. The work involves advancing model training, developing model-driven features from concept to production, and enhancing the orchestrator for improved reasoning, speed, and multi-modal/agentic capabilities. The goal is to ship cutting-edge AI technology impacting hundreds of millions of users.

What you'd actually do

  1. Advance the state of the art in model training - including post-training methods such as fine-tuning and reinforcement learning, high-quality data curation, and experimentation with frontier models
  2. Build and deliver model-driven features from concept to production - spanning model development, evaluation, metrics, and A/B testing.
  3. Evolve our orchestrator to reason more effectively, respond faster, and support new capabilities in multi-modality, agent-based systems, and beyond.

Skills

Required

  • 2+ years of experience in applied ML, NLP, or deep learning.
  • Python
  • ML frameworks (e.g., PyTorch, TensorFlow)

Nice to have

  • experience creating publications (e.g., patents, peer-reviewed academic papers)
  • machine learning engineering, including model development, deployment, and optimization at scale
  • PyTorch
  • TensorFlow

What the JD emphasized

  • core systems that power the Microsoft 365 Chat Copilot for enterprise
  • hundreds of millions of users around the world
  • enterprise scale
  • building the platform that powers Microsoft’s enterprise Copilots
  • shipping of cutting-edge technology for 100s of millions of users
  • building intelligent systems that run them
  • engineer the critical infrastructure, platforms, and features that power the Microsoft Copilot

Other signals

  • building the platform that powers Microsoft's enterprise Copilots
  • shipping of cutting-edge technology for 100s of millions of users
  • building intelligent systems that run them
  • engineer the critical infrastructure, platforms, and features that power the Microsoft Copilot