Leidos Software Engineer interview typically runs 3-4 rounds: recruiter screen, phone screen, technical interview, panel interview. Timeline is about 1-6 months and the process is often resume-focused and conversational.
$100K
Avg. Base Comp
$143K
Avg. Total Comp
3-5
Typical Rounds
1-6 months
Process Length
We've seen a consistent pattern at Leidos: the interviewers care less about flashy algorithm performance and more about whether you can defend your own background with precision. Multiple candidates said the conversation kept returning to prior projects, stack choices, and even line-by-line resume details, whether they were discussing litigation work, a university final project, or the framework used at a previous company. That tells us Leidos is screening for practical ownership — can you explain what you actually built, why you built it that way, and how it connects to the role?
A recurring theme is that the technical bar is real, but it shows up in fundamentals rather than puzzle-heavy coding. Our candidates report questions on ELK, OAuth, Java and Spring basics, stack vs. heap, design patterns, smart pointers, and small coding exercises like arrays or string manipulation. The non-obvious make-or-break factor is comfort with the exact tools and concepts in the posting; one candidate specifically noted that matching the job description mattered more than grinding advanced problems. We also see a strong fit-check undercurrent: why Leidos, how you handle competing tasks, and whether your experience maps to the team’s domain. In other words, the strongest candidates sound grounded, specific, and credible — not overprepared for theory, but fully fluent in their own work.
Synthetized from 5 candidates reports by our editorial team.
Had an interview recently?
Share your experience. Unlock the full guide.
Real interview reports from people who went through the Leidos process.
The interview was pretty straightforward overall, but they did spend a lot of time digging into my resume. I started with an online application through their portal, then moved into a digital interview that had video questions, text responses, a code review section, and some behavioral prompts. After that, I had a live interview with the team. The first thing they wanted to know was why I wanted to work for Leidos and what my best quality was that I could bring to the company, so the early part felt more like a fit check than anything else. They also went in-depth on my prior work experience, so I had to be ready to explain every technical detail I had listed on my resume.
The technical questions were not super advanced, but they were specific. I got a basic coding question around arrays and some app concepts, and there was also a coding challenge that felt moderately hard. What stood out most was that the interviewers kept circling back to what I had actually done before, rather than throwing a lot of algorithm-heavy problems at me. In my panel round, it was mostly managers and project managers asking behavioral questions like how I handle competing tasks, along with questions tied to litigation experience. The vibe was conversational, but they definitely expected you to know your own background well. I ended up getting an offer, and my main takeaway is to be very prepared to talk through your resume line by line and have a clear answer for why Leidos specifically.
Prep tip from this candidate
Be ready to explain every project and bullet on your resume in detail, since they kept drilling into prior work experience. Also practice a basic array coding question plus a moderately hard coding challenge, because that was the most technical part of the process.
Share your own interview experience to unlock all reports, or subscribe for full access.
Sourced from candidate reports and verified by our team.
Topics based on recent interview experiences.
Featured question at Leidos
What do you tell an interviewer when they ask you what your strengths and weaknesses are?
| Question | |
|---|---|
| First Touch Attribution | |
| Employee Project Budgets | |
| P-value to a Layman | |
| Project Budget Error | |
| Hurdles In Data Projects | |
| String Mapping | |
| Implementing the Fibonacci Sequence in Three Different Methods | |
| Slow SQL Query | |
| Liker's Likers | |
| Why Do You Want to Work With Us | |
| 2nd Highest Salary | |
| Empty Neighborhoods | |
| Top Three Salaries | |
| Subscription Overlap | |
| Merge Sorted Lists | |
| Rolling Bank Transactions | |
| Customer Orders | |
| Comments Histogram | |
| String Shift | |
| Employee Salaries | |
| Random SQL Sample | |
| Closest SAT Scores | |
| Weighted Keys | |
| Prime to N | |
| Largest Salary by Department | |
| Upsell Transactions | |
| Monthly Customer Report | |
| Slacking Employees Salaries | |
| Raining in Seattle |
Synthesized from candidate reports. Individual experiences may vary.
Candidates apply through the Leidos portal or are contacted by a recruiter who asks a few basic screening questions about background and interest in the role. This stage is conversational and low-pressure, often including a chance to ask questions about the company and position.
Some candidates complete a digital interview with video questions, text responses, a code review section, and behavioral prompts. Others move directly into an early call with a software architect or technical lead who reviews the resume and asks basic stack-specific questions tied to the job description.
A live interview with one or more engineers focuses on fundamentals and practical problem solving rather than heavy algorithms. Candidates reported whiteboard-style questions, small coding exercises, and discussions of concepts like arrays, stack vs. heap, design patterns, OOP basics, and language-specific topics such as Java, C vs. C++, or smart pointers.
A panel with managers, project managers, technical directors, or multiple engineers mixes behavioral questions with role-specific technical discussion. Interviewers dig deeply into the resume, ask about handling competing tasks or difficult coworkers, and probe domain knowledge relevant to the team such as Salesforce, ELK stack, or OAuth.
Successful candidates receive an offer after the final interview stages. Several experiences note that the overall process can be slow with limited follow-up, but offers were ultimately extended after the panel or in-person rounds.