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# Journeyman Test & Evaluation (T&E) Engineer

- **Company:** Mayvin, Inc.
- **Location:** Washington, DC, United States
- **Experience:** Experienced
- **Salary:** $120,000 - $130,000
- **Contract:** Permanent contract
- **Skills:** Data Analysis, Systems Engineering, Command-Line Interface, Python (Programming Language), MATLAB, NumPy, Parsing, SAP Sales and Distribution, SciPy, SQL Databases, Data Processing, Delivery Pipeline, SC Clearance, Pandas, Matplotlib, Data Management
- **Published:** November 8, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=df75d80212957052

## About the Role

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

## Description

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