updated october 2026

Research Scientist Jobs in McLean (October 2026)

11 open Research Scientist positions in McLean as of October 2026, across 2 hiring companies — 1 of them remote-friendly. Capital One leads with 10 openings. Listings are updated daily, and every role links straight to the employer's official application page.

All data science jobs in McLean →

CO

Applied Researcher 4 (AI Foundations, LLM Customization and Finetuning)

Capital One·San Jose, CA; McLean, VA; Cambridge, MA; New York, NY·On-site

Senior·Research Scientist·$219k – $250k

Python PyTorch TensorFlow LLMs

5d ago→

CO

Applied Researcher 5 (AI Foundations - LLM, Optimization and Finetuning)

Capital One·New York, NY; McLean, VA; Cambridge, MA; San Jose, CA·On-site

Senior·Research Scientist·$263k – $300k

LLMs Fine-tuning Optimization Python

2w ago→

CO

Applied Researcher 4 (AI Foundations - LLM, Optimization and Finetuning)

Capital One·New York, NY; McLean, VA; Cambridge, MA; San Jose, CA·On-site

Senior·Research Scientist·$219k – $250k

LLMs Optimization Fine-tuning Python

2w ago→

CO

Applied Researcher 4 (AI Foundations, LLM Core and Agentic AI)

Capital One·New York, NY; McLean, VA; Cambridge, MA; San Jose, CA·On-site

Senior·Research Scientist·$219k – $250k

Python PyTorch TensorFlow Deep learning

3w ago→

CO

Applied Researcher 5 (AI Foundations, LLM Core and Agentic AI)

Capital One·New York, NY; McLean, VA; Cambridge, MA; San Jose, CA·On-site

Staff·Research Scientist·$263k – $300k

Python PyTorch TensorFlow Deep learning

3w ago→

CO

Applied Researcher 4 (AI Foundations, LLM Customization, Finetuning, Reinforcement Learning)

Capital One·San Jose, CA; McLean, VA; Cambridge, MA; New York, NY·On-site

Senior·Research Scientist·$219k – $250k

LLMs Reinforcement learning Fine-tuning Machine learning

3w ago→

CO

Applied Researcher 5 (AI Foundations, LLM Core and Agentic AI)

Capital One·San Jose, CA; San Francisco, CA; McLean, VA; Cambridge, MA; New York, NY·Hybrid

Staff·Research Scientist·$263k – $300k

Python PyTorch TensorFlow Deep learning

3w ago→

CO

Applied Researcher 4 (AI Foundations, LLM Core and Agentic AI)

Capital One·San Jose, CA; San Francisco, CA; McLean, VA; Cambridge, MA; New York, NY·On-site

Senior·Research Scientist·$219k – $250k

Python PyTorch TensorFlow LLMs

3w ago→

CO

Applied Researcher 4 (AI Foundations, LLM Core and Agentic AI)

Capital One·San Jose, CA; San Francisco, CA; McLean, VA; Cambridge, MA; New York, NY·On-site

Senior·Research Scientist·$219k – $250k

Python PyTorch TensorFlow Deep learning

3w ago→

CO

Applied Researcher 5 (AI Foundations, LLM Core and Agentic AI)

Capital One·San Jose, CA; San Francisco, CA; McLean, VA; Cambridge, MA; New York, NY·On-site

Senior·Research Scientist·$263k – $300k

Python PyTorch TensorFlow LLMs

3w ago→

DS

Quantitative Analytics Senior

Direct Staffing Inc·McLean, VA, United States·On-site

Senior·Research Scientist

Generalized additive models Transition models Logistic regression Sas programming

123mo ago→

Methodology: live Research Scientist listings whose location includes McLean, updated daily. Multi-office roles appear under every listed location.