Simplex

Sales Coordinator

Two-year degree in business or related field; strong communication; customer service; MS Word/Outlook/Excel/Adobe; ERP experience; able to work across departments; English proficient.

Technical Documentation and Graphics Coordinator

Two-year degree; experience in technical documentation, graphic design, or marketing content; proficiency with documentation and graphic design tools; strong communication; organized and detail-oriented; manufacturing environment knowledge preferred; MS Office skills; able to work office and production floor.

Production Planner

Experience in production planning or scheduling within a manufacturing environment (ETO experience strongly preferred). ERP (Epicor preferred) and Excel; SharePoint a plus. Strong cross-functional communication and ability to work in a high-variability environment.

Assembly Technician - 2nd Shift

Assembly Technician

Operate production machinery, assemble parts, read prints, use hand/power tools, lift 30-50 lbs, communicate in English.

Programming Technician

2–5 years in manufacturing engineering support; associate degree in Electrical Engineering Technology or related field; ladder logic programming; PLC/HMI development; strong math and analytical skills; proficient with Microsoft Office; good English communication.

Two-year degree in Electrical Engineering Technology or related field; 2-5 years engineering support in manufacturing; PLC ladder logic; math and electrical theory; proficiency with Microsoft Office; strong problem-solving and communication.

Quality Technician

Inspect, test, and verify equipment and processes; root cause analysis; document procedures; comply with ISO 9001 and OSHA standards.

Wiring Technician

Wiring technician capable of installing wiring per diagrams, reading blueprints, using hand tools, lifting 30-50 pounds, and communicating in English.

Testing Technician

Technical background with 2-year degree in electrical systems; ability to lift 50 lbs; proficient with MS Word/Outlook/Excel/Access; strong communication; understands OSHA; operates shop tools.

Title	Location	Date
Sales Coordinator Full Time · $50K-$56K/yr · 0+ YOE Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Apr 30, 2026
Technical Documentation and Graphics Coordinator Full Time · $50K-$56K/yr Springfield, Illinois, United States · Hybrid	Springfield, Illinois, United States Hybrid	Apr 30, 2026
Production Planner Full Time · $80K-$100K Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Apr 21, 2026
Assembly Technician - 2nd Shift Full Time · $37K/yr Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Mar 30, 2026
Programming Technician Full Time · $46K-$50K/yr · 2+ YOE Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Mar 6, 2026
Programming Technician Full Time · $46K-$50K/yr · 2+ YOE Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Mar 5, 2026
Quality Technician Full Time · $40K/yr Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Jul 16, 2025
Wiring Technician Full Time · $35K/yr Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Dec 12, 2024
Testing Technician Full Time Springfield, Illinois, United States · Onsite	Springfield, Illinois, United States Onsite	Dec 10, 2022

Activities	Designing electrical test systemsManufacturing load banksDeveloping fuel supply systemsEngineering generator control systemsProviding industrial equipment rentals
Headquarters	US
Industries	Electrical Equipment ManufacturingPower Systems
Name	Simplex
Employees	240
Type	Private
Parent Company	TerraVest Industries
Tagline	Designs and manufactures electrical load banks and fuel supply systems.
Founded	1,934
Website	simplexdirect.com
Latest Funding Round	Corporate Round
Latest Funding Year	2,025
Latest Funding Amount	28,000,000
Latest Investors	TerraVest Industries

Simplex

About Simplex