johnson-ds-ds-sql-coding-2026"
segment: "jobs"
lang: "en"
keyword: "Johnson & Johnson Data Scientist ds sql coding"
company: "Johnson & Johnson"
school: ""
layer: L1-company
type_id: ""
date: "2026-05-08"
source: "factory-v2"
Johnson & Johnson data scientist SQL and coding interview 2026
TL;DR
Johnson & Johnson data scientist interviews require strong SQL and coding skills. Candidates can expect 4-6 interview rounds. Salaries range from $118,000 to $140,000.
The interview process takes 30-45 days. Preparation is key.
Data scientists must have a strong foundation in statistics and machine learning.
Who This Is For
This article is for data scientist candidates applying to Johnson & Johnson. The company looks for professionals with 3-5 years of experience in SQL and coding.
A master's degree in a quantitative field is preferred.
Candidates must have experience working with large datasets.
The ideal candidate has a strong understanding of data visualization tools.
What is the Johnson & Johnson data scientist interview process
The Johnson & Johnson data scientist interview process consists of 4-6 rounds. The first round is a phone screen with a hiring manager.
The second round is a technical assessment, where candidates must complete a series of SQL and coding challenges.
The third round is an on-site interview with a panel of data scientists.
The final round is a meeting with the director of the data science team.
Candidates can expect to receive a job offer within 30-45 days.
How do I prepare for the Johnson & Johnson data scientist SQL interview
To prepare for the SQL interview, candidates should practice writing complex queries.
They should also review data modeling concepts and practice optimizing queries.
A good resource is the PM Interview Playbook, which covers SQL fundamentals.
Candidates should also practice whiteboarding exercises to improve their problem-solving skills.
The playbook covers case studies and examples from real interviews.
What coding skills do I need for the Johnson & Johnson data scientist interview
Candidates need to have strong coding skills in languages such as Python or R.
They should also have experience working with machine learning libraries such as scikit-learn.
The company looks for candidates who can write clean and efficient code.
Candidates should practice coding challenges on platforms such as LeetCode or HackerRank.
They should also review data structures and algorithms.
What are the most common Johnson & Johnson data scientist interview questions
Common interview questions include "How do you handle missing data?" and "How do you optimize a slow-running query?"
The company also looks for candidates who can communicate complex technical concepts to non-technical stakeholders.
Candidates should practice answering behavioral questions such as "Tell me about a time when you had to work with a cross-functional team."
They should also review the company's products and services.
How long does the Johnson & Johnson data scientist interview process take
The interview process takes 30-45 days.
The first round is a phone screen, which takes 30 minutes.
The second round is a technical assessment, which takes 2-3 hours.
The third round is an on-site interview, which takes 4-6 hours.
The final round is a meeting with the director, which takes 1-2 hours.
Preparation Checklist
- Review SQL fundamentals, including data modeling and query optimization
- Practice coding challenges in Python or R
- Review machine learning concepts, including supervised and unsupervised learning
- Practice whiteboarding exercises to improve problem-solving skills
- Work through a structured preparation system, the PM Interview Playbook covers case studies and examples from real interviews
- Review data visualization tools, including Tableau and Power BI
- Practice answering behavioral questions, including "Tell me about a time when you had to work with a cross-functional team"
Mistakes to Avoid
- BAD: Not practicing SQL and coding skills before the interview.
- GOOD: Practicing SQL and coding challenges on platforms such as LeetCode or HackerRank.
- BAD: Not reviewing the company's products and services.
- GOOD: Reviewing the company's website and recent news articles.
- BAD: Not preparing to answer behavioral questions.
- GOOD: Practicing answering behavioral questions, including "Tell me about a time when you had to work with a cross-functional team"
FAQ
Q: What is the average salary for a data scientist at Johnson & Johnson?
A: The average salary is $118,000 to $140,000.
Q: How many rounds of interviews can I expect?
A: 4-6 rounds, including a phone screen, technical assessment, and on-site interview.
Q: What skills do I need to have to be a successful data scientist at Johnson & Johnson?
A: Strong SQL and coding skills, experience working with large datasets, and a strong understanding of data visualization tools.
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