ServiceNow Data Engineer interview questions and process

Updated · 14 sources

Hiring Pulse: where ServiceNow candidates are right now

Dated status reports from public Reddit threads and anonymous PortLume reports, updated Oct 15. Not official ServiceNow data.

  • 0 status reports in the last 7 days
  • Not enough data yet: median from final interview to a decision shows at 5+ people
  • Latest movement: 1 offer, 1 interview reported since Sep 18

Latest ServiceNow hiring reports

Candidates rate the ServiceNow Data Engineer interview Medium-Hard: Reports describe DSA-heavy loops plus Spark/SQL theory screens, and a staff-level data track with a big data round, take-home and design round. Reports describe 6 rounds, from Recruiter screen / online assessment (HackerRank) to Hiring manager round, with about About 3-4 weeks from first call to offer.

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ServiceNow Data Engineer interview rounds

  1. Recruiter screen / online assessment (HackerRank): Recruiter reaches out after a resume review or referral. Some candidates get a HackerRank link for a timed coding screen before any live rounds.
  2. Big Data / Spark and SQL technical round
  3. DSA and problem solving round
  4. Take-home assessment (reported for senior data roles)
  5. Data system design round
  6. Hiring manager round

Questions reported in ServiceNow Data Engineer interviews

  1. Given a postorder traversal of a Binary Search Tree (BST), convert it back into a normal BST.
  2. The Coin Change problem: explain your approach.
  3. Simple SQL question: sum of salaries of employees grouped by department and ordered by salary descending.
  4. Given trains at a railway station with varying arrival times, some cancelled or delayed, which data structure would you use and why?

Practise any of these with timed AI feedback and a full ServiceNow mock: free account.

ServiceNow Data Engineer interview: quick answers

How many rounds are in the ServiceNow Data Engineer interview?

Public reports describe 6 rounds for the ServiceNow Data Engineer interview: (1) Recruiter screen / online assessment, (2) Big Data / Spark and SQL technical round, (3) DSA and problem solving round, (4) Take-home assessment, (5) Data system design round, (6) Hiring manager round.

Is the ServiceNow interview difficult?

Public reports put the ServiceNow Data Engineer interview at Medium-Hard difficulty. Reports describe DSA-heavy loops plus Spark/SQL theory screens, and a staff-level data track with a big data round, take-home and design round. The process has 6 rounds, from Recruiter screen / online assessment to Hiring manager round.

Does ServiceNow ask DSA in Data Engineer interviews?

Yes. Rounds that involve coding: DSA and problem solving round. Incremental rounds where you advance only if you clear the current one, mixing DSA, database fundamentals and project discussion, with theory-focused Spark and SQL questions for data roles. Data structures and algorithms is among the skills reports mention most.

How long does ServiceNow take to give results?

Time to a result for the ServiceNow Data Engineer process, per public reports: About 3-4 weeks. The process has 6 rounds, from Recruiter screen / online assessment to Hiring manager round. Based on 14 public reports, last updated Oct 2026.

Sources

Based on 14 public reports: YouTube (8), LeetCode Discuss (6), last updated Oct 2026.

Compiled by Adarsh Sharma from public candidate reports. Unofficial guide: PortLume AI is not affiliated with ServiceNow.

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