# Senior Applied Scientist - Copilot & Agents

**Company**: Microsoft
**Location**: London
**Experience**: senior
**Job type**: full-time
**Salary**: £74,700.00 – £122,600.00 per year
**Category**: IT
**Industry**: Technology
**Ticker**: MSFT
**Wikidata**: https://www.wikidata.org/wiki/Q2283

**Apply**: https://microsoft.ai/job/senior-applied-scientist-copilot-agents/?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_2596aa44-f62

## Description

We're seeking a Senior Applied Scientist with expertise in Applied AI, Machine Learning, and Deep Learning to shape the future of enterprise productivity through cutting-edge Large Language Models (LLMs) and AI-powered experiences in Microsoft 365 Copilot.

You will join a fast-paced team of scientists, engineers, and product managers working at the forefront of AI innovation, driving the development of advanced LLM-based capabilities, reasoning systems, and real-time orchestration platforms.

**Responsibilities**

- Develop scientific approaches for evaluating and improving LLM reasoning, grounding, retrieval, and agentic behaviours using offline benchmarking, online experimentation, and large-scale telemetry analysis.

- Drive complex technical investigations, model evaluations, and experimentation to improve quality, reliability, latency, cost efficiency, and user experience.

- Define and execute rigorous evaluation methodologies, offline benchmarks, online experimentation frameworks, and data-driven approaches for measuring model and product performance.

- Partner with engineering and product teams to translate research innovations into scalable, production-ready systems.

- Analyse model behaviour, failure modes, grounding effectiveness, reasoning quality, tool use, retrieval performance, and orchestration outcomes to identify opportunities for improvement.

- Develop and advance approaches for agentic workflows, multi-step reasoning, planning, retrieval-augmented generation (RAG), tool orchestration, and reinforcement-learning-based optimisation.

- Review technical designs, experimental results, and implementation approaches to ensure high standards of scientific rigor, reproducibility, and engineering excellence.

- Collaborate with researchers, applied scientists, and engineers to solve challenging technical problems spanning LLMs, machine learning, deep learning, information retrieval, and human-AI interaction.

- Stay current with advances in Large Language Models, reasoning systems, agent architectures, reinforcement learning, and applied AI, incorporating relevant innovations into production systems.

**Qualifications**

- Bachelor's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND demonstrated professional related experience.

- Master's Degree or Doctorate in related fields also considered.

**Preferred Qualification:**

- A Ph.D. in Computer Science, Math, Physics, Statistics, or related areas.

- Demonstrated professional working as an IC in Machine Learning, Large Language Models, Natural Language Processing, Information Retrieval, Recommendation Systems, or related fields.

- Professional experience developing ML models for scaled production services, with a proven track record of successfully shipping applied research to production.

- Experience designing and implementing agentic AI models and systems.

The typical base pay range for this role across the United Kingdom is £74,700.00 – £122,600.00 per year.

## Skills

### Required
- Applied AI
- Machine Learning
- Deep Learning
- Large Language Models
- LLMs
- Information Retrieval
- Human-AI Interaction

### Nice to have
- Ph.D. in Computer Science
- Natural Language Processing
- Recommendation Systems
- Agentic AI models

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Source: [Apply at microsoft.ai](https://microsoft.ai/job/senior-applied-scientist-copilot-agents/?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)