Principal, R&D Engineer
Posted Jul 8, 2026 · We last checked this listing on Oct 5, 2026
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 product you built from zero and shipped to real users. What did you cut to get it out?
What they are checking: Startup-style judgment about scope and speed, which this small, hands-on R&D team expects.
Tell me about a time you killed your own project. How did you know it was time?
What they are checking: Honesty about evidence and the willingness to stop, which keeps a focused R&D team effective.
What does being accountable for a product's impact mean to you as an engineer?
What they are checking: Ownership beyond code, caring about whether the product changed outcomes for real customers.
Tell me about working on a very small team where everyone wears several hats. What did you take on outside your role?
What they are checking: Comfort and range in a lean environment where principal engineers do far more than write code.
What would you do
You ship a prototype into a live hospital environment and users give you mixed feedback in week one. What do you do?
What they are checking: Reading early signals and iterating quickly without overreacting to a single loud voice.
How would you use Vizient's access to hospital data and customers differently than a startup could?
What they are checking: Whether they see the specific advantage the posting describes and how to use it responsibly.
About the work
How do you validate that a healthcare problem is worth building for before writing much code?
What they are checking: Discipline in customer discovery and quick tests so effort goes into problems hospitals actually have.
How do you build fast while still handling patient or hospital data safely?
What they are checking: Balancing speed with security and privacy, which is non-negotiable even in an R&D unit.
Walk me through the architecture of something you built that later had to scale. What would you change now?
What they are checking: Senior engineering depth and reflection on early technical choices under real usage.
How do you decide between building something custom and using an existing tool or model?
What they are checking: Pragmatic build-versus-buy judgment that saves a small team's limited time.
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Practice this out loudThe full job description
As published by Vizient.