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Senior Data Scientist

Vizient · Chicago, IL · $102,400–$179,000 a year · Full time

Posted Aug 19, 2026 · We last checked this listing on Oct 5, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a predictive model you built on clinical or claims data that made it into production.

What they are checking: Whether they have carried healthcare models past the notebook into something people actually use.

Tell me about a time you partnered with engineering to make a data science solution scalable.

What they are checking: Whether they can work across product and engineering to turn prototypes into production-ready capabilities.

What would you do

A clinical stakeholder doesn't trust your model's output. How do you build their confidence?

What they are checking: Whether they can explain models in clinical terms and invite scrutiny rather than defend a black box.

A business team asks for a model but can't say what decision it will drive. What do you do?

What they are checking: Whether they push to define the decision and success measure before investing weeks in modeling.

About the work

How would you predict risk of readmission using EMR data, and what pitfalls would you watch for?

What they are checking: Whether they understand leakage, coding changes and missingness patterns that make healthcare models look better than they are.

How have you used NLP or large language models on clinical notes or other unstructured healthcare text?

What they are checking: Whether they can apply modern language models to messy clinical text and evaluate them honestly.

How do you check a model for bias across patient groups like race, payer type or age?

What they are checking: Whether they treat fairness as a measured property of the model, which matters when outputs affect patient care.

You're combining claims data with EMR data from different hospitals. How do you handle the differences in coding and completeness?

What they are checking: Whether they can reconcile disparate healthcare sources without quietly introducing errors into the analysis.

Walk me through how you'd decide between a simple statistical model and a complex machine learning model for a client question.

What they are checking: Whether they choose methods by what the problem and audience need rather than what is most impressive.

How would you monitor a deployed model for drift in a healthcare setting?

What they are checking: Whether they plan for models degrading as coding, practice patterns or patient mix change over time.

How do you handle PHI responsibly when exploring large healthcare datasets?

What they are checking: Whether they work within HIPAA and data use limits as a habit rather than as an afterthought.

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The full job description

As published by Vizient.

When you’re the best, we’re the best. We instill an environment where employees feel engaged, satisfied and able to contribute their unique skills and talents while living and working as their authentic selves . We provide extensive opportunities for personal and professional development, building both employee competence and organizational capability to fuel exceptional performance through an inclusive environment both now and in the future. Summary: In this role, you will develop automated analytics products and advanced data science solutions that address complex business and client questions and improve clinical, operational, and economic outcomes. You will operate in an environment of ambiguity, rapid learning, and evolving requirements, using experimentation, prototyping, validation, and continuous feedback to translate emerging concepts into testable solutions. You will evaluate technical and business feasibility, refine analytical approaches through iterative development, and partner with product and technical teams to advance promising capabilities from early research through pilot, production readiness, and ongoing enhancement. Responsibilities: • Develop data science solutions, automated analytics products, and actionable insights across multiple projects and domains with minimal guidance. • Translate emerging concepts and business needs into testable solutions through experimentation, rapid prototyping, validation, and iterative development. • Apply machine learning, natural language processing, statistical modeling, and predictive analytics techniques to structured and unstructured data. • Evaluate technical and business feasibility, analyze results, and refine models and methods through successive development cycles and continuous feedback. • Apply expertise across data discovery, structuring, cleaning, enrichment, statistical design, modeling, validation, deployment, and insight delivery. • Make autonomous analytical decisions related to exploratory analysis, model development, methodology selection, visualization, and deployment based on project objectives. • Analyze complex datasets and communicate exploratory and predictive findings through clear insights and visualizations for technical and non-technical audiences. • Develop and revise technical code, apply data science best practices, and provide guidance to other data scientists on analytical approaches and solution development. • Partner with product, engineering, and platform teams to advance promising capabilities from research and prototyping through pilots, production readiness, and ongoing enhancement. • Evaluate emerging data science methods, tools, and technologies to identify opportunities to improve analytical capabilities and client solutions. Qualifications: • Relevant degree preferred. • 5 or more years of relevant experience required. • Experience with statistical modeling, predictive analytics, machine learning, natural language processing, generative AI, and advanced data science methodologies. • Experience with experimentation, prototyping, model evaluation, validation, and iterative solution development. • Experience with end-to-end data science workflows, including data preparation, feature engineering, model development, validation, deployment, and visualization. • Proficiency in programming and analytical tools such as Python, R, SQL, SAS, MATLAB, Java, or similar technologies. • Experience working with complex datasets, including data discovery, preparation, enrichment, validation, normalization, and integration of disparate data sources. • Experience with analytics, cloud-based, or distributed data platforms such as Databricks, Apache Spark, Hadoop, Tableau, or similar technologies. • Ability to navigate ambiguity and evolving requirements while translating emerging concepts into practical, testable solutions. • Strong analytical and problem-solving skills with the ability to assess feasibility, make autonomous project-level decisions, and refine approaches based on evidence and feedback. • Strong communication and collaboration skills with the ability to convey complex analytical concepts to technical and non-technical clients and work effectively across product and technical teams. Estimated Hiring Range: At Vizient, we consider skills, experience, and organizational needs in our compensation approach. Geographic factors may adjust the range estimate and hires typically fall below the top range. Compensation decisions are tailored to individual circumstances. The current salary range for this role is $102,400.00 to $179,000.00. This position is also incentive eligible. Vizient has a comprehensive benefits plan! Please view our benefits here: http://www.vizientinc.com/about-us/careers Equal Opportunity Employer: Females/Minorities/Veterans/Individuals with Disabilities The Company is committed to equal employment opportunity to all employees and applicants without regard to race, religion, color, gender identity, ethnicity, age, national origin, sexual orientation, disability status, veteran status or any other category protected by applicable law.

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