Demo

Test Engineer

Rex Systems Incorporated
Chippewa Falls, WI Full Time
POSTED ON 4/15/2026
AVAILABLE BEFORE 5/15/2026

Rex Systems Incorporated is seeking a senior, hands‑on manufacturing/production engineer to support urgent sustainment needs for legacy U.S. defense electronics.

For over 50 years, our products have supported critical military platforms. Much of this work relies on the deep tribal knowledge held by a small, highly experienced technical team. As these systems continue to age, capturing, restoring, and extending this capability is mission‑critical and time‑sensitive.

If you are an engineer who thrives on technical depth, troubleshooting, reverse engineering, and legacy electronics sustainment, this role will give you a uniquely important impact.

This position directly supports the long-term survival of critical manufacturing capability. You will bridge the gap between decades of accumulated legacy knowledge and the future of our defense electronics production.


What you will do

  • Lead manufacturing and production engineering activities for low‑volume, high‑reliability defense electronics.
  • Capture and document legacy processes, tribal knowledge, and test methods from senior technicians.
  • Analyze, define, and implement production methods that restore or extend manufacturability of aging systems.
  • Troubleshoot complex analog, digital, rf, and mixed‑signal assemblies down to the component level.
  • Develop test fixtures, test procedures, and conformance methods — especially where no documentation exists.
  • Design and fabricate simple mechanical fixtures or tooling as needed.
  • Apply mechanical aptitude to support custom manufacturing solutions.
  • Interpret and work from government technical data packages (TDPs), schematics, and legacy drawings.
  • Support quality, purchasing, and production teams with root‑cause analysis, corrective action, and process improvements.
  • Provide manufacturability input during bid/proposal activity.
  • Maintain production documentation, work instructions, process flows, and assembly/test methods.

This role sits at the crossroads of sustainment, engineering, test, and manufacturing, ensuring our nation’s legacy platforms remain mission‑capable.


Minimum requirements

  • Degree in engineering/engineering technology and/or 10 years hands‑on electronics manufacturing & troubleshooting experience
  • Deep working knowledge of analog, digital, embedded, rf, or telecom electronics
  • Ability to troubleshoot PCBs to component level
  • Knowledge of passive/active electrical components and their properties
  • Strong understanding of schematics, drawings, and technical data packages
  • Familiarity with IPC, MIL‑STD‑883/MIL‑STD‑202/MIL-PRF documents
  • Experience with oscilloscopes, cable testers (Cirris), and bench‑level diagnostics
  • Ability to reverse‑engineer undocumented hardware or processes when required
  • Excellent documentation, organizational, and communication skills
  • Desire to help capture irreplaceable institutional knowledge from veteran engineers/technicians


Desired experience

Experience with the following is a strong advantage:

  • National instruments labview (highly desirable)
  • Programming languages: c, c , embedded c
  • Autodesk eagle, or other pcb layout/cad tools (highly desirable)
  • Experience generating or editing gerber files
  • Cirris cable testers
  • General CAD and schematic capture tools
  • Mechanical aptitude; ability to design simple fixtures
  • Machining experience (bonus)

Salary.com Estimation for Test Engineer in Chippewa Falls, WI
$76,761 to $89,490
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