Leidos Software Engineer Intern Interview Questions (2026)
Morgantown, WVReston, VA·6 interview reviews·Medium difficulty
Software Engineer Intern Interview Reviews
6Online assessment was tough, but the onsite technical was two standard LC-style problems. Interviewer wanted clear communication before coding.
“Longest Substring Without Repeating Characters - Find the length of the longest substring without repeating characters”
Online assessment was tough, but the onsite technical was two standard LC-style problems. Interviewer wanted clear communication before coding.
“LRU Cache - Design a data structure for Least Recently Used cache”
Online assessment was tough, but the onsite technical was two standard LC-style problems. Interviewer wanted clear communication before coding.
“How do you handle tight deadlines and pressure?”
One round with two problems in 45 min. If you've practiced patterns you're fine — narrate your approach before you code.
“Merge Intervals - Merge all overlapping intervals”
Recruiter screen, then a 45-minute coding round. Friendly interviewer. Results in a few days.
“One easy, one medium”
Recruiter screen, then a 45-minute coding round. Friendly interviewer. Results in a few days.
“One easy, one medium”
About This Role
Frequently Asked Questions
How hard is it to get hired as a Software Engineer Intern at Leidos?
The interview difficulty is rated 3.4/5 by candidates. 67% report a positive experience. Emphasize Data Structures and Algorithms in your prep.
How long does the Leidos Software Engineer Intern hiring process take?
The process typically takes 2–6 weeks from application to final decision, depending on the hiring cycle and team availability.
What is the interview process like?
Most candidates go through a recruiter screen, followed by technical coding rounds, and a final interview loop. 53% of candidates applied online.
What questions are asked in a Leidos Software Engineer Intern interview?
Common topics include data structures & algorithms, system design for some teams, and behavioral STAR stories. Practice with our AI voice interviewer to tighten delivery.
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