# Applied Researcher 4 (AI Foundations, LLM Customization,… > Applied Researcher 4 (AI Foundations, LLM Customization, Finetuning, Reinforcement Learning) at Capital One in New York, New York, United States. Category:… Applied Researcher 4 (AI Foundations, LLM Customization, Finetuning, Reinforcement Learning) # Applied Researcher 4 (AI Foundations, LLM Customization, Finetuning, Reinforcement Learning) Capital One ## Job Description Team Description: What You'll Do: - Partner with a cross-functional team of data scientists, software engineers, machine learning engineers and product managers to deliver AI-powered products that change how customers interact with their money. - Leverage a broad stack of technologies - Pytorch, AWS Ultraclusters, Huggingface, Lightning, and more - to reveal the insights hidden within huge volumes of numeric and textual data. - Build AI foundation models through all phases of development, from design through training, evaluation, validation, and implementation. - Engage in high impact applied research to take the latest AI developments and push them into the next generation of customer experiences. - Flex your interpersonal skills to translate the complexity of your work into tangible business goals. - Collaborate with senior researchers to prepare internal tech reports or conference submissions summarizing novel methods or findings The Ideal Candidate: - You love the process of analyzing and creating, but also share our passion to do the right thing. You know at the end of the day it's about making the right decision for our customers - Innovative. You continually research and evaluate emerging technologies. You stay current on published state-of-the-art methods, technologies, and applications and seek out opportunities to apply them - Creative. You thrive on bringing definition to big, undefined problems. You love asking questions and pushing hard to find answers. You're not afraid to share a new idea - A leader. You challenge conventional thinking and work with stakeholders to identify and improve the status quo. You're passionate about talent development for your own team and beyond - Technical. You're comfortable with open-source languages and are passionate about developing further. You have hands-on experience developing AI foundation models and solutions using open-source tools and cloud computing platforms - Has a deep understanding of the foundations of AI methodologies - Experience building large deep learning models, whether on language, images, events, or graphs, as well as expertise in one or more of the following: training optimization, self-supervised learning, robustness, explainability, RLHF - An engineering mindset as shown by a track record of delivering models at scale both in terms of training data and inference volumes - Experience in delivering libraries, platform level code or solution level code to existing products - A professional with a track record of coming up with high quality ideas or improving upon existing ideas in machine learning, demonstrated by accomplishments such as first author publications or projects - Possess the ability to own and pursue a research agenda, including choosing impactful research problems and autonomously carrying out long-running projects Basic Qualifications: - Currently has, or is in the process of obtaining, a PhD in Electrical Engineering, Computer Engineering, Computer Science, AI, Mathematics, or related fields, with an exception that required degree will be obtained on or before the scheduled start date or M.S. in Electrical Engineering, Computer Engineering, Computer Science, AI, Mathematics, or related fields plus 2 years of experience in Applied Research - PhD in Computer Science, Machine Learning, Computer Engineering, Applied Mathematics, Electrical Engineering or related fields - LLM PhD focus on NLP or Masters with 5 years of industrial NLP research experience Multiple publications on topics related to the pre-training of large language models (e.g. technical reports of pre-trained LLMs, SSL techniques, model pre-training optimization) Member of team that has trained a large language model from scratch (10B + parameters, 500B+ tokens) Publications in deep learning theory Publications at ACL, NAACL and EMNLP, Neurips, ICML or ICLR - Behavioral Models PhD focus on topics in geometric deep learning (Graph Neural Networks, Sequential Models, Multivariate Time Series) Multiple papers on topics relevant to training models on graph and sequential data structures at KDD, ICML, NeurIPs, ICLR Worked on scaling graph models to greater than 50m nodes Experience with large scale deep learning based recommender systems Experience with production real-time and streaming environments Contributions to common open source frameworks (pytorch-geometric, DGL) Proposed new methods for inference or representation learning on graphs or sequences Worked datasets with 100m+ users - Finetuning PhD focused on topics related to guiding LLMs with further tasks (Supervised Finetuning, Instruction-Tuning, Dialogue-Finetuning, Parameter Tuning) Demonstrated knowledge of principles of transfer learning, model adaptation and model guidance Experience deploying a fine-tuned large language model - Data Preparation Publications studying tokenization, data quality, dataset curation, or labeling Contribution to a major open source corpus Contribution to open source libraries for data quality, dataset curation, or labeling - Demonstrated ability to reproduce and extend peer-reviewed AI research using modern open-source frameworks - Experience designing controlled experiments and documenting reproducibility results for internal or public research Capital One will consider sponsoring a new qualified applicant for employment authorization for this position. Posted September 19, 2026 ## Related Jobs Applied Researcher 4 (AI Foundations, LLM Core and Agentic AI) Capital One Applied Researcher 4 (AI Foundations, LLM Customization, Finetuning, Reinforcement Learning) Capital One Applied Researcher 5 (AI Foundations, LLM Core and Agentic AI) Capital One Applied Researcher 4 (AI Foundations, LLM Core and Agentic AI) Capital One Applied Researcher 5 Capital One Full Time Maintenance Technician - $32.45hr starting pay Nestlé Purina Full Time Senior Land Surveyor SOLTESZ Senior Geotechnical Engineer-Tailings NEWRANGE COPPER NICKEL LLC Engineer ## Related Searches