Raytheon Interview Experience 2026

Raytheon software candidates describe a recruiter screen and one video panel with the hiring manager and two or three engineers. The panel is mostly behavioral (a conflict with a teammate, working with different perspectives) with a few C and data structure questions such as heap versus stack and finding the least value in a binary tree, and reviewers report no LeetCode-style problems.

Most reviews on Glassdoor’s RTX software engineer page rate the interview easy. Public, dated accounts are fewer than for larger tech employers, so the reports below are short.

Raytheon interview process round by round

Round	Duration	What candidates reported
Recruiter screen	15-30 min	Background, citizenship, clearance
Panel interview	45-60 min	Hiring manager and 2-3 engineers on Zoom or Teams; STAR plus C and tree questions
Offer	Days to weeks	Then clearance processing

Raytheon interview reports

These come from anonymous Glassdoor reviews on the Raytheon and RTX pages; each is one candidate’s account.

Software Engineer I. A Zoom call with the hiring manager and two other engineers. Mostly behavioral with a few C questions; no LeetCode-style problems.
Software Engineer I. A panel of three that went over projects on the resume and the programming languages listed in the job.
Software engineer. Technical questions on the heap versus the stack in C and finding the least child in a binary tree, plus questions on tree data structures.
Software engineer. Asked about experience with full stack development.
Software engineer. Behavioral questions on a conflict with a past teammate and how it was solved, and a time working on a team with different perspectives; the reviewer said to use STAR.
Engineer, Derry, Northern Ireland. A standard panel of about five people lasting an hour.

Detailed interview experiences

Experience 1: Software Engineer I, three-person video panel

Profile: Entry-level software candidate (Glassdoor).

Panel: The hiring manager and two engineers on Zoom.

Mostly behavioral questions.
A few C questions.
No LeetCode-style problems.

Takeaways

What it tested: Clear behavioral answers and C basics.
How to prepare: Review C memory, pointers and data structures, and prepare four STAR stories.

Experience 2: Software Engineer I, resume and languages

Profile: Entry-level software candidate (Glassdoor).

Panel: Three interviewers went through each project on the resume and asked about the languages named in the job posting.

Takeaways

How to prepare: For each language on the posting, prepare one project where you used it and one concept question you can answer, such as memory management in C or virtual functions in C++.

Experience 3: Software engineer, C and trees

Profile: Software engineer candidate (Glassdoor).

Technical questions: The difference between heap and stack memory in C, and finding the least child in a binary tree.

Takeaways

How to prepare: Code tree traversals by hand in C, including min, max and height, and explain the difference between a binary tree and a binary search tree.

Raytheon interview questions that come up often

Technical

What is the difference between the heap and the stack in C?
Find the least value in a binary tree
Questions on tree data structures
Questions on the languages named in the job
Full stack development experience (web-facing teams)

Behavioral

Describe a conflict with a past teammate and how it was solved
Tell me about a time you worked on a team with different perspectives
Walk us through a project on your resume
Why Raytheon?

Sample answers for high-frequency questions

Q. What is the difference between the heap and the stack in C?
A. The stack holds local variables and call frames, is freed automatically when a function returns, and is fast but small. The heap holds memory from malloc or calloc that lives until you call free; it suits large or long-lived data but can leak or fragment. Never return a pointer to a local stack variable.

Q. How do you find the least value in a binary tree?
A. In a binary search tree, follow left children to the end, in O(h). In an unordered binary tree, visit every node and return the minimum of the node and both subtrees, treating null as positive infinity, in O(n).

Q. Describe a conflict with a past teammate and how it was solved.
A. “A teammate wanted to rewrite our firmware in C++ two weeks before a demo. I asked what problem he wanted to fix, which was messy state handling, and suggested refactoring that module into a state machine in C. We finished in three days and revisited C++ after the demo.”

Raytheon interview tips from these reports

Panel

Expect the hiring manager plus two or three engineers on video.
Most of the time goes to behavioral questions.

Technical questions

Short C and data structure questions, not timed coding.
Heap versus stack and binary tree questions are reported.

Eligibility

U.S. citizenship is required for cleared roles.
Some postings need an interim Secret before start.

STAR answers mapped to RTX’s values are on the Raytheon behavioral interview questions page, and pay and clearance details are on the Raytheon interview questions hub.

Quick answers

How many rounds is the Raytheon interview?

Usually a recruiter screen and one panel. Glassdoor reviewers for Software Engineer I describe a single video panel with the hiring manager and two or three engineers.

What technical questions does Raytheon ask in the panel?

Reported questions include the difference between the heap and the stack in C, finding the least value in a binary tree, tree data structures in general, full stack development experience, and questions on the programming languages named in the job.

Is the Raytheon interview hard?

Most reviewers on Glassdoor’s RTX software engineer page rate it easy. The technical questions are short concept questions rather than LeetCode problems, so the panel weighs how clearly you explain your projects and how you handle behavioral questions.

Sources

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