Senior Data Scientist

Index Analytics LLC; Milford Mill (MD); On-site; USD 140,000 - 210,000; Full time

Job summary

Index Analytics LLC in Baltimore seeks a Senior Data Scientist to lead advanced analytics, NLP, and LLM/RAG initiatives across Medicaid and CHIP programs. You will design scalable ML pipelines on AWS (SageMaker, S3), mentor junior staff, and collaborate with stakeholders to deliver data-driven policies and health outcomes.

The role requires a Master’s in Computer Science or Data Science (PhD preferred) and 10+ years in ML, with strong Python, NLP, and MLOps expertise.

Qualifications

• 10+ years of experience in data science or similar role.
• Strong leadership in ML/AI projects, with production deployment experience.
• Proven track record building NLP/text analytics and transformer-based models.
• Experience with AWS cloud services (SageMaker, S3, Glue) and MLOps tooling.
• Ability to translate complex analytics into actionable business insights.

Responsibilities

• Lead AI/ML initiatives and guide solution architecture and model selection.
• Mentor junior data scientists through code reviews and coaching.
• Build end-to-end ML pipelines on AWS for training, evaluation, and inference.
• Develop NLP solutions including text classification, entity recognition, and semantic search.
• Design RAG systems with document ingestion, embeddings, and vector search.
• Create scalable knowledge graphs for policy and data governance relationships.
• Develop prompt engineering and evaluation frameworks for LLM-powered apps.
• Collaborate with cross-functional teams in an Agile environment.

Skills

ML leadership

NLP

Python

AWS SageMaker

LLM/RAG

Data modeling

Knowledge graphs

MLOps

Model deployment

Stakeholder collaboration

Education

Master’s degree in Computer Science or Data Science

PhD preferred

Tools

SageMaker

S3

Glue

Airflow

Redshift

DynamoDB

GitHub

TensorFlow

PyTorch

Job description

Index Analytics, LLC, is a rapidly growing, Baltimore-based small business providing health-related consulting services to the federal government. At the center of our company culture is a commitment to instilling a dynamic and employee-friendly place to work. We place a priority on promoting a supportive and collegial team environment and enhancing staff experience through career development and educational opportunities.Position OverviewThe Senior Data Scientist applies advanced analytics, statistical modeling, machine learning, and emerging artificial intelligence technologies to address complex healthcare and policy challenges. This role combines deep technical expertise with healthcare domain knowledge to transform complex data into actionable insights, support evidence-based decision-making, and drive innovation across Medicaid and CHIP programs.The incumbent will lead the development of analytical solutions, evaluates and implements advanced technologies including NLP and LLM/RAG frameworks, and collaborates with stakeholders to design scalable, data-driven products that improve program oversight, operational performance, and health outcomes.ResponsibilitiesServe as a technical lead on AI and machine learning initiatives, providing guidance on solution architecture, model selection, implementation approaches, and technical best practices.Mentor and support junior and mid-level data scientists through code reviews, knowledge sharing, technical coaching, and collaborative problem solving.Establish and promote best practices for MLOps, model evaluation, model monitoring, reproducibility, and responsible AI developmentBuild and deploy end-to-end ML pipelines on AWS (e.g., SageMaker, S3, Glue) for scalable training, evaluation, and inference.Develop and implement advanced NLP solutions, including text classification, entity recognition, topic modeling, and semantic search using models such as BERT and transformer-based architectures.Design, build, and productionize RAG (Retrieval-Augmented Generation) systems, including document ingestion, embedding pipelines, vector search, and LLM orchestration.Design and implement a scalable knowledge graph and semantic data model that captures relationships among policies, analytic use cases, data domains, information assets, products, and institutional knowledge, enabling advanced search, discovery, impact analysis, and AI-assisted knowledge retrieval.Develop LLM-powered applications, including prompt engineering, evaluation frameworks, and optimization techniques for accuracy, consistency, and cost.Contribute to agentic AI system design, including multi-step reasoning workflows, tool use, and orchestration of LLM-driven agents for complex tasks.Implement predictive analytics and statistical modeling to uncover patterns, trends, and insights from healthcare data.Evaluate emerging AI technologies, frameworks, and techniques and recommend their appropriate application to government healthcare use cases.Perform data mining and exploratory data analysis (EDA) using state-of-the-art techniques across structured and unstructured datasets.Contribute to technical leadership across multiple AI initiatives while remaining an active hands-on developer and model builder.Build data visualizations, dashboards, and analytical tools to communicate findings clearly to technical and non-technical stakeholders.Evaluate model performance using appropriate metrics (e.g., accuracy, AUC, precision/recall) and present results in a clear, actionable manner.Collaborate in an Agile environment with cross-functional teams including engineers, analysts, and stakeholders.Recommend data-driven solutions and AI strategies aligned with CMS business needs and healthcare policy objectives.Master’s degree in Computer Science, Data Science, or a related field required; PhD preferred. A minimum of ten (10) years of experience or an equivalent combination of education and experience, with five (5) or more years of experience as a Data Scientist or in a similar role.Strong experience in machine learning and statistical modeling, including supervised and unsupervised learning techniques, deep learning, and a solid foundation in probability, hypothesis testing, and regression.Demonstrated experience serving as a technical lead, senior individual contributor, or subject matter expert on machine learning or AI projects.Proven track record of deploying, maintaining, and monitoring machine learning and AI solutions in production environments.Strong understanding of MLOps practices, including model versioning, CI/CD workflows, monitoring, testing, and operational support.Proven expertise in NLP and text analytics, including transformer-based architecture (e.g., BERT and related models), embeddings, vector databases, and semantic search systems.Hands-on experience building LLM-powered applications, including prompt engineering, RAG architecture, and ideally agentic workflows or LLM orchestration frameworks, preferably within AWS environments (e.g., Bedrock).Advanced programming skills in Python (preferred) and/or R, with practical experience using ML and data libraries such as pandas, NumPy, scikit-learn, PyTorch, and TensorFlow.Strong experience with AWS cloud and MLOps tooling, including SageMaker, S3, Glue, Airflow, and data stores such as Redshift and DynamoDB, along with version control (GitHub) and CI/CD pipelines (e.g., Jenkins).Experience with developing and using knowledge graphs strongly preferred.Experience with backend systems and data integration, including data modeling and supporting APIs for web-based and production applications.Experience working with large healthcare datasets, especially Medicaid, a plusStrong written and verbal communication skills, with the ability to explain complex models and insights clearly.Experience supporting CMS or other federal healthcare agencies is a plus.