Mercury Systems Software Engineer Interview Questions + Guide in 2025

Written by IQ Team

Reviewed by Shane Frykholm

Published March 27, 2026

Estimated reading time: 5 minutes

Mercury Systems is a technology company dedicated to delivering cutting-edge processing solutions that enhance security and efficiency in aerospace and defense applications.

As a Software Engineer at Mercury Systems, you will play a pivotal role in developing and supporting sophisticated RF test automation systems that are crucial for various aerospace and defense programs. This position demands a blend of hardware and software expertise, as you will be responsible for building and maintaining RF test automation systems, which involve controlling devices, managing RF test equipment, and performing critical RF measurements. You will utilize programming languages such as C#, Java, or Python to create automation tools that enhance the efficiency of RF and digital engineers during product development.

The ideal candidate will possess strong problem-solving skills, a solid foundation in object-oriented programming (OOP), and familiarity with RF test equipment and measurements. Having a proactive approach and the ability to work effectively within a team are vital to align with Mercury's commitment to innovation and excellence. With an emphasis on a collaborative culture that fosters continuous learning and growth, this role offers an opportunity to make a significant impact on the company's technological advancements.

This guide will help you prepare for an interview by providing insights into the expectations for a Software Engineer at Mercury Systems, allowing you to approach your interview with confidence and clarity.

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How prepared are you for working as a Software Engineer at Mercury Systems?

Typically, interviews at Mercury Systems vary by role and team, but commonly Software Engineer interviews follow a fairly standardized process across these question topics.

We've gathered this data from parsing thousands of interview experiences sourced from members.

Practice for the Mercury Systems Software Engineer interview with these recently asked interview questions.

Question Topic Difficulty

Over-Budget Projects

SQL

Medium

Over budget on a project is defined when the salaries, prorated to the day, exceed the budget of the project.

For example, if Alice and Bob both combined income make 200K and work on a project of a budget of 50K that takes half a year, then the project is over budget given 0.5 * 200K = 100K > 50K.

Write a query to forecast the budget for all projects and return a label of "overbudget" if it is over budget and "within budget" otherwise.

Note: Assume that employees only work on one project at a time.

Example:

Input:

employees table

Column	Type
`id`	INTEGER
`first_name`	VARCHAR
`last_name`	VARCHAR
`salary`	INTEGER
`department_id`	INTEGER

projects table

Column	Type
`id`	INTEGER
`title`	VARCHAR
`state_date`	DATETIME
`end_date`	DATETIME
`budget`	INTEGER

departments table

Column	Type
`id`	INTEGER
`name`	VARCHAR

employee_projects table

Column	Type
`project_id`	INTEGER
`employee_id`	INTEGER

Output:

Column	Type
`title`	VARCHAR
`project_forecast`	VARCHAR

View Question

Show Solution

Hurdles In Data Projects

Behavioral

Medium

Scrambled Tickets

Data Structures & Algorithms

Hard

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