Principal Applied Scientist

Microsoft

Confirmed live 2 days ago High trust
Hybrid

Quick summary

Work type
Hybrid
Location
Salary
$142,800–$274,800 / yr
Posted
10 days ago
Freshness
Confirmed live 2 days ago
Closes
Feb 28, 2027

Market check

Salary context

Competitive pay

How this pay compares to similar roles

Similar $217k
This role $209k
$127k most similar roles pay here $291k

This role pays more than 54% of similar roles. Most pay $185,307–$248,440 — the shaded band above. At the midpoint, this role pays about $209k versus about $217k for comparable roles.

Based on 240 similar postings.

Employer

About Microsoft

Microsoft Corporation is a global technology leader producing software, hardware, and cloud services including Windows, Office 365, Azure cloud platform, Xbox gaming, and Surface devices. Industry: Software & Cloud Computing

Microsoft currently has 598 open roles on FindRole.

Listed pay typically runs $119,800–$234,700 across 586 roles with salary data.

Most-posted roles

View all roles at Microsoft

At a glance

TL;DR · Principal Applied Scientist

The Principal Applied Scientist joins the Content team to develop next-generation intelligent, large-scale content platforms for AI-driven experiences. This role involves leading applied science for grounding, search, retrieval, and ranking systems that power agentic AI across various surfaces. The individual will build and improve ranking models for search results, source selection, and tool choices while developing grounding systems to ensure reliable, source-backed answers from web content and enterprise data. Day-to-day responsibilities include tuning models using supervised fine-tuning, preference optimization, reward modeling, distillation, and synthetic data generation. The role requires expertise in large language models, information retrieval, and conversational AI. Key technical focuses include query understanding, semantic and hybrid retrieval, and multi-turn agent experiences involving planning and error recovery. The candidate will also define evaluation metrics for factuality, hallucination reduction, and citation correctness to ensure high-quality production outputs.

What does a Applied Scientist earn?

Median $208800 from 47 postings across 10 companies.

See salary data

What you'll do

  • Lead applied science for grounding, search, retrieval, and ranking systems across large-scale content surfaces.
  • Develop and improve ranking models for search results, source selection, tool choices, and agent actions.
  • Build grounding systems to ensure AI agents generate reliable, source-backed answers from trusted data.
  • Improve end-to-end search quality including query understanding, semantic retrieval, and latency-aware ranking.
  • Advance multi-turn agent experiences by improving context understanding, planning, and error recovery.
  • Tune models using supervised fine-tuning, preference optimization, distillation, and synthetic data generation.
  • Define evaluation methods for factuality, hallucination reduction, citation correctness, and user satisfaction.
  • Translate scientific improvements into production features while mentoring engineers and influencing product direction.

What we're looking for

  • Bachelor's degree plus 6 years experience, Master's plus 4 years, or Doctorate plus 3 years in a relevant technical field.
  • Industry experience building, evaluating, and deploying machine learning models or AI systems in production.
  • Deep expertise in at least two areas including search, information retrieval, ranking, grounded generation, or agentic AI.
  • Experience with large-scale datasets, production ML pipelines, distributed training, and inference systems.
  • Proficiency in model tuning techniques such as supervised fine-tuning, preference optimization, distillation, and synthetic data generation.
  • Experience designing evaluation frameworks for factuality, grounding, hallucination reduction, and multi-turn agent experiences.
  • Proven ability to lead ambiguous technical projects and influence product, engineering, and science direction.
  • Strong communication skills to explain scientific tradeoffs to both technical and non-technical stakeholders.

More like this

Similar roles

Principal Applied Scientist, CoreAI

Microsoft

164 days ago $142,800$274,800
Machine Learning Large Language Models (LLMs) Deep Learning Azure AI Safety Supervised Fine-Tuning Distillation Policy Optimization Distributed Systems Algorithms Software Engineering Predictive Analytics Statistics Data Science
6+ yrs exp

Principal Applied Scientist

Microsoft

36 days ago $142,800$274,800
Machine Learning Anomaly Detection Large Language Models Deep Learning Causal Inference Statistical Machine Learning Data Mining System Design Low-latency Pipelines Experimentation Frameworks Model Operationalization
9+ yrs exp Hybrid

Senior Applied Scientist

Microsoft

78 days ago $119,800$234,700
Machine Learning Generative AI LLMs Prompt Engineering Python SQL C# R C++ Java NLP Data Mining Feature Engineering Statistics Regression Classification Optimization
4+ yrs exp Hybrid

Senior Applied Scientist

Microsoft

120 days ago $119,800$234,700
Deep Learning Python PyTorch TensorFlow Machine Learning Feature Engineering Multi-task Learning Causal Inference Data Pipelines Model Calibration offline evaluation Online Evaluation Recommendation Systems Statistics Econometrics
4+ yrs exp Hybrid

Senior Applied Scientist

Microsoft

27 days ago $119,800$234,700
Mechanism Design Machine Learning Reinforcement Learning Optimization Methods Statistical Modeling Data Pipelines Azure Predictive Analytics gametheory counterfactualestimation marketplaceoptimization
4+ yrs exp Hybrid

Senior Applied Scientist

Microsoft

9 days ago $119,800$234,700
LLMs Deep Learning NLP Fine-tuning Reinforcement Learning Multi-modality Model Optimization A/B Testing Data Curation Predictive Analytics Statistics
4+ yrs exp Hybrid