Field Service Technician III

Qualus

Field Service Technician III responsible for testing, maintenance, and repair of electrical apparatus in Specialized Field Services. Involves fieldwork and technical leadership within the team.

Posted 5/23/2026full-timeWalled Lake • Missouri • 🇺🇸 United StatesMid-LevelSeniorWebsite

About the role

Key responsibilities & impact

Provide technical capabilities for testing relays, circuit breakers, transformers, motor control equipment, and related switchgear in the field
Completing mechanical work and repairs on breakers and switches, including tear down, refurbishment and parts replacement
Serve as a technical leader in testing/maintenance/repair of breakers, transformers, switchgear, motor control and associated equipment
Provides proper preparation and documentation for site projects
Wiring circuit breakers
Utilizing and accurately reading test equipment
Reading schematics and wiring drawings
Troubleshooting circuit breaker controls
Reading and plotting time-current curves
Testing transformers, including Power Factor and TTR
Accurately and consistently documenting using Power DB
Provide instruction and mentorship in training for junior level technicians
Able to work with electrical tools and socket sets.

Requirements

What you’ll need

High School Diploma
Minimum of 3-5 years’ experience as a Switchgear/High Voltage Technician
Proficiency with high voltage test equipment as well as knowledge of low and medium voltage test equipment
Ability to carry out instructions furnished in written or oral form
Deal with problems involving several concrete variables
Ability to work with mathematical concepts such as probability and statistical inference and fundamentals of plain and solid geometry and trigonometry
Ability to apply concepts such as fractions, percentages, ratios and proportions of practical situations
Ability to read company manuals and reports, workplace rules and procedures
Speak with poise and confidence, using correct English
Perform regular field work both indoors and outdoors
Valid Driver’s license and good driving record
NETA 2 preferred
Ability to communicate effectively in English (inclusive of reading and writing) due to the nature of safety-related materials, documentation, and interactions with clients.

Benefits

Comp & perks

Medical
Dental
Vision
Life Insurance
Short and Long-Term Disability
401(k) match
Flexible Spending Accounts
EAP
Parental Leave
Paid time off
Holidays

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

testing relaystesting circuit breakerstesting transformersmechanical repairstroubleshooting circuit breaker controlsreading schematicsreading wiring drawingsusing high voltage test equipmentusing low voltage test equipmentdocumenting using Power DB

Soft Skills

technical leadershipmentorshipeffective communicationproblem-solvingability to follow instructionsconfidence in speakingability to work with mathematical conceptsability to read manuals and reports

Certifications

High School DiplomaNETA 2