Journeyman Test & Evaluation (T&E) Engineer

In this role, you will apply rigorous nuclear engineering, data analysis, and systems engineering practices to evaluate CBRN-with a heavy emphasis on radiological and nuclear (rad/nuc)-detection systems. You will work within CBRN SD helping transition systems from initial design through developmental and operational testing to support major acquisition milestone decisions. Must be a U.S. Citizen. Must have an active Secret clearance., 1. Test Planning, Coordination, and Field Execution

• Documentation Development: Draft, review, and refine comprehensive T&E documentation, including Test and Evaluation Master Plans (TEMPs), Test Plans (TPs), Analysis Plans, Test Observation Reports (TORs), and daily test logs
• Test Design & Logistics: Collaborate with DHS operational components (CBP, USCG), state, local, tribal, and territorial (SLTT) partners, and National Laboratories to design and execute rigorous test campaigns for:
• Radiation Portal Monitors (RPMs) and mobile detection systems
• Radioisotope Identification Devices (RIIDs) and spectroscopic hand-helds
• Personal Radiation Detectors (PRDs) and wearable detection platforms

Mayvin is seeking a proactive and detail-oriented Journeyman Test & Evaluation Engineer with a focus on radiation detection to provide high-impact Advisory and Assistance Services (A&AS) support to the Department of Homeland Security (DHS) Federal Emergency Management Agency (FEMA) the Chemical, Biological, Radiological, and Nuclear (CBRN) Support Directorate (SD) Test & Evaluation (T&E) Division., * Minimum 3+ years of combined professional experience in nuclear engineering, radiation detection instrumentation, and/or systems Test & Evaluation (T&E)

• Bachelor’s degree in Nuclear Engineering, Health Physics, Applied Physics, or a closely related scientific/engineering discipline
• Demonstrated proficiency in GADRAS for gamma-ray and neutron detector response modeling and spectrum analysis
• Hands-on proficiency with Python (NumPy, SciPy, Pandas, Matplotlib) for scientific data processing, parsing, and pipeline automation
• Familiarity with additional data management/analysis environments (e.g., MATLAB, SQL queries, Command Line scripting)
• Solid working knowledge of radiation detector physics and technologies (e.g., NaI, HPGe, CZT, PVT, He-3 alternatives)
• Familiarity with ANSI/IEEE radiation detection standards (e.g., ANSI N42.34, N42.35, N42.38, N42.42 data formatting)
• Excellent technical authoring, presentation, and briefing skills

Preferred Qualifications:

• Master’s degree in Nuclear Engineering or Systems Engineering
• Direct prior experience supporting DHS CWMD, DHS S&T, or National Laboratory test campaigns
• Experience implementing the Model-Test-Model (MTM) methodology within a federal acquisition program
• Ability to leverage secondary radiation transport/simulation codes (e.g., MCNP) where applicable to model background variations

Mayvin is more than a workplace-it’s a community built on innovation, ingenuity, and impact. Enjoy outstanding benefits and amenities, a truly supportive work environment, and continuous opportunities for professional growth. Your contributions are recognized and rewarded, and-most importantly-your voice matters. Here, you’re treated with the dignity and respect you deserve. Mayvin is proud to support the national security mission of the United States through exceptional service to the Departments of War, Homeland Security, and Justice. Join us in solving the nation’s toughest challenges-because at Mayvin, #PeopleMatter and it’s time to #ReimagineYourMission.