Sr. Electrical Test Engineer (US Citizen Required)

About the Role

The Ranger Group is seeking a highly skilled Senior Electrical Test Engineer to lead the testing, reverse engineering, and validation of military Ground Precision Warning Systems. In this role, you will be tackling complex system-level diagnostics where complete documentation may not be available. Your primary mission will be to interrogate and reverse-engineer legacy and proprietary serial communications, parse undocumented data streams, and build comprehensive custom test sets from the ground up.

Responsibilities

• Protocol Reverse Engineering: Interrogate, sniff, and analyze serial data buses to reverse-engineer undocumented or legacy communication links.
• Data Stream Analysis: Determine communication parameters (baud rates, parity, framing) and parse raw data payloads to understand exactly what information the Ground Precision Warning Systems are capturing and transmitting across RS-232, RS-422, and RS-485 interfaces.
• Test Set Architecture & Design: Design, build, and deploy custom hardware test sets and automated test equipment (ATE) from scratch to interface with the warning systems.
• Verification & Validation (V&V): Develop comprehensive test plans, procedures, and scripts to rigorously verify that the unit under test (UUT) performs precisely to military and operational specifications.
• Hardware Troubleshooting: Utilize oscilloscopes, logic analyzers, serial sniffers, and multimeters to debug hardware and communication issues down to the component and protocol layer.
• Documentation & Reporting: Translate reverse-engineered findings into formal engineering documentation, interface control documents (ICDs), and final test reports.

Qualifications

• Experience: 10+ years of professional experience in electrical engineering, test engineering, or systems engineering.
• Education: Bachelor’s Degree in Electrical Engineering, Computer Engineering, or a related technical discipline.
• Serial Protocol Expertise: Deep, hands-on, expert-level understanding of physical layer serial communication protocols, specifically RS-232, RS-422, and RS-485.
• Reverse Engineering: Proven track record of reverse-engineering undocumented hardware interfaces and decoding unknown data streams/telemetry.
• Test Set Development: Extensive experience designing custom test rigs, harnesses, and automated test sets for hardware validation.
• Bench Equipment: Mastery of standard electrical test lab equipment (logic analyzers, digital storage oscilloscopes, signal generators, protocol analyzers).
• Must be able to obtain a Security Clearance

Preferred Qualifications

• Industry Background: Previous experience working with military avionics, ground vehicles, or defense warning systems.
• Programming/Automation: Proficiency in test automation and scripting languages (e.g., Python, C/C++, or LabVIEW) to parse data and automate V&V processes.
• Defense Standards: Familiarity with MIL-STD testing and environmental requirements.