Engineering Technician - criticalloop

Polluxa, Inc.; Torrance (CA); On-site; USD 65,000 - 95,000; Full time

Job summary

Critical Loop is seeking an Engineering Technician to support the build, integration, and testing of next-generation energy hardware. The role involves moving between the shop floor and test environment, assembling prototypes from drawings, wiring systems, and setting up instrumentation for development tests.

You will work with engineers to diagnose build issues, document nonconformances, and ensure safety practices around high-voltage systems.

Qualifications

• Experience assembling prototype electromechanical systems from drawings and specs.
• Ability to read electrical drawings, wiring diagrams, and BOMs.
• Familiar with bench/HIL test setups including instrumentation and meters.

Responsibilities

• Build and wire prototype skids, control cabinets, switchgear, and subassemblies from drawings and work orders.
• Perform HV/LV wire routing, harnessing, crimping, terminations, and connector installation to spec.
• Set up and operate bench and HIL test equipment (inverters, load banks, DAQ, sensors, oscilloscopes, meters).
• Conduct development and validation testing and capture traceable data for engineering.
• Identify and troubleshoot build/test issues with engineering to determine root causes and next steps.
• Read and interpret GD&T, BOMs, and drawings; verify and redline as needed.
• Document nonconformances and provide feedback to improve designs and processes.
• Maintain organized lab tools and ensure calibration is current.
• Follow safety practices around high-voltage/high-energy systems (LOTO, arc-flash PPE, ESD).
• Collaborate with Electrical & Controls Engineering, Production/Build, Test, Quality, and Field Service.

Skills

Electromechanical assembly

Wiring and harnessing

Electrical drawings interpretation

HV/LV wiring

Test equipment setup

Tools

Oscilloscopes

DAQ systems

Power meters

Job description

Critical Loop is shaping the next generation of energy systems by building the integrated edge grid of the future. Specializing in advanced energy management and battery control systems, Critical Loop empowers businesses and communities to seamlessly unite distributed energy resources for faster, more reliable, and affordable grid access.

With deep expertise in grid modernization and a passion for creating resilient, responsive energy solutions, Critical Loop drives innovation at the intersection of technology and energy.

POSITION SUMMARY

Critical Loop is looking for an experienced Engineering Technician to join our Product Development team and support the build, integration, and testing of next-generation energy hardware.

This is a highly hands-on role for someone who is comfortable moving between the shop floor and the test environment. You’ll build and wire prototype electromechanical systems, set up and run development tests, troubleshoot issues alongside engineers, and help turn early designs into repeatable, high-quality builds.

You won't be working at a single station doing the same assembly every day. One day you may be wiring a prototype system from an electrical drawing, and the next you may be setting up instrumentation for a development test or working directly with engineering to diagnose and document a build issue.

RESPONSIBILITIES

• Build, wire, and assemble prototype electromechanical skids, control cabinets, switchgear, and subassemblies from engineering drawings, schematics, work orders, and work instructions.
• Perform HV/LV wire routing, harnessing, crimping, terminations, connector installation, fastening, and torquing to specification.
• Set up and operate bench and hardware-in-the-loop (HIL) test equipment, including inverters, load banks, DAQ systems, sensors, oscilloscopes, power meters, and power analyzers.
• Execute development and validation testing and capture clean, accurate, and traceable test data for engineering.
• Read and interpret electrical drawings, wiring diagrams, mechanical drawings, GD&T, BOMs, and work instructions.
• Identify build and test issues, troubleshoot problems, and work directly with engineering to determine root causes and next steps.
• Verify and redline drawings and work instructions based on actual build and test experience.
• Document nonconformances and provide clear feedback that improves future designs, builds, and processes.
• Maintain organized lab tools and instrumentation and ensure required calibration is current.
• Follow established safety practices when working around high-voltage and high-energy systems, including LOTO, arc-flash PPE, and ESD

requirements

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• Partner closely with Electrical & Controls Engineering, Production/Build, Test, Quality, and Field Service teams.