Quest Diagnostics Software Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 11 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Quest Diagnostics.
Quest Diagnostics
Software Engineer
Entry Difficult Neutral experience No offer 1 round
Interview process
Technical screen
Interview formats
Coding Behavioral
The interview at Quest Diagnostics focused on data structures and algorithms, along with questions drawn from my resume. They asked about the Dutch National Flag problem and my personal interests.
Confirmed questions4 questions
- What is your proficiency in programming languages?
- Can you explain the Dutch National Flag problem?
- Tell me about your resume.
Quest Diagnostics
Software Engineer
Mid Average Negative experience No offer 3 rounds
Interview process
Recruiter call Technical screen Onsite
Interview formats
Behavioral Technical
It was a horrible experience with the team, and the code and pipeline were outdated. Upper management seemed very bossy and toxic. I didn’t get a good vibe; it felt more like a bait and switch to hire IT tech support.
Confirmed questions3 questions
- Can you tell me about your past experiences and projects?
- We'd like to ask you some questions about Object-Oriented Design (OOD).
- We'll also be asking about software engineering concepts.
Quest Diagnostics
Senior Software Engineer
Senior Average Positive experience No offer 2 rounds
Interview process
Recruiter call Technical screen Onsite Panel
Interview formats
Technical Coding System Design Behavioral
Got a call directly from Quest Diagnostics. The whole process was pretty smooth. First, Round-1 was a Technical round where they asked about Java 8 features, Lambda, Stream API methods, and other basic java concepts. Then DB questions like PrimaryKey, UniqueKey, NVM(), SQL Query using RowNum, and similar basic DB stuff. Also asked about JSON Schema, Data types, Securing REST API. Then Spring questions on IOC, DI, Scope of Bean, and simple Springboot questions. Lastly, some basic Microservices questions. Round-2 was also a Technical round with a Panel of 7 people, out of which 4 asked questions.
Confirmed questions8 questions
- Tell me about Java OOPs concepts.
- How would you approach file reading questions programmatically?
- Explain Java Exceptional Handling.
Quest Diagnostics Software Engineer Interview Questions
Quoted word for word from Quest Diagnostics interview reports.
“What is Dependency Injection?”
Read reports →“What are the SOLID principles?”
Read reports →“Solve this Java Stream question.”
Read reports →“Can you explain the Dutch National Flag problem?”
Read reports →“What are Design patterns?”
Read report →“Explain Java Exceptional Handling.”
Read report →“How do you approach SQL Server performance tuning?”
Read report →“Tell me about Entity Framework.”
Read report →“Can you explain Inversion of Control?”
Read report →Formats, difficulty and experience
Across all 11 Quest Diagnostics interview reports.