Senior Software Developer Jobs in Elgin, OK (NOW HIRING)

Epirus is a high-growth technology company dedicated to overcoming the asymmetric challenges inherent to the future of national security. Epirus' flagship product, Leonidas, is a software-defined system built using intelligent power management techniques which allow power-hungry systems to do more with less.  

This is an exciting role an innovative, high-growth defense technology company. We are seeking a highly skilled Senior Test Engineer, Electromagnetic Laboratory to oversee our multi-client testing facility. In this role, you will develop and own technical lab operations from the ground up, mentor a small team of motivated test engineers, and serve as the primary engineering consultant for our aerospace, defense, and commercial clients. You will lead test execution for RF, Antenna Over-the-Air (OTA), and Electromagnetic Compatibility (EMC) testing, helping clients troubleshoot failures in real time. The ideal candidate blends deep electromagnetic testing technical expertise with excellent project management and client-facing communication. 

• Develop and own daily technical lab operations of two large anechoic chambers and associated RF test equipment. 
• Act as the technical lead and mentor for a small team of motivated test engineers 
• Serve as the primary liaison between Epirus and our aerospace, defense, and commercial clients throughout the testing lifecycle. 
• Execute complex RF, Antenna OTA, and EMC measurements and tests to client statements of work and aerospace/defense standards.  
• Develop automation scripts (Python, MATLAB) to optimize test time and streamline data collection. 
• Provide active engineering support to clients to assist in troubleshooting failures and analyze data to produce compliance-ready test reports and certificates. 
• Oversee lab scheduling and project prioritization to efficiently balance multiple client accounts. 
• Interface regularly with the larger test engineering organization in Torrance, CA to further refine test methodology and measurement techniques. 
• Manage the calibration and preventative maintenance schedules for all laboratory assets. 

• B.S. or M.S. degree in Electrical Engineering or equivalent. 
• 5-8 years of experience (with B.S.) or 3-5 years of experience (with M.S.) in RF, Antenna OTA, or EMC Test. 
• Solid theoretical understanding of RF, Antenna OTA, and EMC test and measurement principles. 
• Highly proficient in using RF test and measurement equipment such as Vector Network Analyzers (VNA), Spectrum Analyzers, High-Speed Oscilloscopes, Waveform & Signal Generators, Power Meters, AutoCal and SOLT Calibration. 
• Solid understanding of aerospace and defense testing standards including MIL-STD-461 and DO-160. 
• Experience developing automated test stands for various types of hardware. 
• Experience mentoring junior engineers and providing feedback aligned with the principles of radical candor. 
• Experience with client-facing project management, particularly communicating changes to schedule and technical scope. 
• Strong written and oral communication skills. 
• Organized; comfortable working in a fast-paced, ever-changing environment. 
• US Citizen or Permanent Resident (future security clearance may be required). 

• Experience as a people manager – building teams, developing young talent, and defining team roadmaps. 
• Experience certifying a laboratory to ISO/IEC 17025 and/or AS9100. 
• Experience working in a multi-client or commercial test house environment. 
• Deep knowledge of other defense and commercial testing standards including MIL-STD-810, CISPR, IEC 61000, and ISO (automotive EMC). 
• Comfortable with object-orientated programming using Python. 

ITAR REQUIREMENTS:  

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.   

At Epirus, you'll work with technical peers and great people—and get first crack at some of the defining technology challenges of our time. Here, "impossible" is just a challenge. We're a diverse, fast-growing team of change-makers fueling the future of energy with revolutionary solutions. Join us and rewrite the rules.