Full-time

Test Engineer III

Posted by Mercury Systems • Chantilly, VA, United States

📍 Chantilly, VA 🕒 February 25, 2026

About the Role

Req. Number
25-553

Job Description



Job Summary:

Mercury Systems is seeking a Test Engineer III to lead test efforts in developing and executing server systems for mission critical aerospace and defense applications. This role plays a pivotal part in ensuring product reliability, performance, and security across the full engineering lifecycle from concept to sustainment.



Job Responsibilities:


+ Implement standardized system testing practices across Mercury’s ruggedized servers and secure software product lines.

+ Design and implement robust test procedures that meet military standards (e.g., MIL-STD-810, DO-461, DO-167, DO-178C, DO-254) and cybersecurity requirements.

+ Oversee and conduct functional, environmental, stress, and security testing of hardware and software systems, ensuring performance in extreme conditions and mission-critical environments.

+ Collaborate with ...

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