Highland, IL 62249 • (43.6 miles) • Full Time • $18.00 to $19.00 / hr • 10/17/2026

HOW YOU WILL MAKE A DIFFERENCE As a Cylinder Tester, this position is responsible for identifying, sorting, and inspecting cylinders of all types and sizes utilizing hand and power tools to perform detailed inspections in accordance with the DOT regulations regarding recertification and refurbishment of gas cylinders. This position is located in our Highland, IL facility at Gateway Cylinder Technologies, a subsidiary of Cee Kay Supply, Inc. Please note: schedule is Monday-Thursday, 6am-4:30pm SUCCESS ESSENTIALS: The successful candidate for this role is safety-conscious, detail-oriented, reliable, and responsible. Employees in this role are responsible for certifying high pressure cylinders are safe for refilling. This work impacts a wide breadth of industries, communities, and individuals

New Baden, IL 62265 • (41.2 miles) • Full Time • $120,000 to $130,000 / yr • 10/15/2026

Systems Engineer IV The Systems Engineer IV provides senior-level technical and systems engineering support to the JTMS Joint Program Office, with a primary focus on systems engineering, cybersecurity/RMF accreditation, Agile requirements coordination, and governance support. This role supports both the Systems Engineering and Testing Branch and the Chief Scientist function, ensuring systems are engineered, secured, accredited, and managed in alignment with DoD, USTRANSCOM, and program-level requirements. Key Responsibilities Systems Engineering & Technical Oversight • Perform systems engineering analysis for complex DoD information systems, including evaluation, verification, and validation of existing and emerging solutions. • Develop, review, and maintain system architectures and engine

Macedonia, IL • (34.1 miles) • Full Time • 9/24/2026

The Programming / PLC Technician is responsible for the configuration, troubleshooting, and maintenance of programmable logic controllers, automation systems, and communication networks across all underground and surface mining operations. This role ensures reliable operation of electrically controlled systems critical to production, safety, and environmental compliance. Requirements · Develop, modify, and maintain PLC programs for mining equipment, conveyors, ventilation, dewatering, and power distribution systems. · Troubleshoot automation faults using ladder logic, function block, and structured text programming. · Integrate and calibrate field devices including sensors, VFDs, relays, encoders, and communication interfaces. · Perform diagnostics and network maintenance on Ethernet/IP, M

New Baden, IL 62265 • (41.2 miles) • Full Time • $90,000 to $95,000 / yr • 10/11/2026

The Systems Engineer III is highly specialized in one or more phases of software systems development, systems integration, or network engineering. Provides technical assistance and advice on complex activities. Formulates / defines specifications, develops / modifies / maintains complex systems and subsystems, using vendor engineering releases and utilities for overall operational systems. Applies analytical techniques when gathering information from users, defining work problems, designing technology solutions, and developing procedures to resolve the problems. Develops complete specifications to enable computer programmers to prepare required programs. Analyzes methods of approach. Reviews task proposal requirements, gathers information, analyzes data, prepares project synopses, compares