Controls & Instrumentation Engineer

Job Description

Job Description

Controls & Instrumentation Engineer

26-040

Invariant Corporation is seeking a fulltime Controls & Instrumentation Engineer to support design, integration, testing, and automation efforts across customer and internal R&D programs. This role will lead electrical controls activities, panel design, instrumentation integration, and systemlevel troubleshooting on prototype and production equipment.

Duties Include:

• Design and update electrical schematics and wiring diagrams in compliance with UL508A and internal standards.
• Design and build control panels, including component selection, layout, wiring, and quality inspection.
• Program, configure, and troubleshoot PLCbased control systems (Siemens preferred).
• Integrate sensors, instrumentation, and automation hardware for prototype and production systems.
  Support Factory Acceptance Testing (FAT), system commissioning, and customer evaluations.
• Develop control logic flow diagrams, P&IDbased control narratives, and system block diagrams.
• Implement automation for data parsing, validation, and management using Python and SQL.
• Assist in networking tasks including Layer2/Layer3 diagrams and system interface planning.
• Prepare documentation, work instructions, troubleshooting notes, test reports, and asbuilt drawings.

Minimum Requirements:

• BS in Electromechanical Engineering, Electrical Engineering, or a related discipline.
• 12 years of experience in controls engineering, instrumentation, or electrical systems design
• Experience with AutoCAD Electrical, SolidWorks/Fusion 360, and PLC ladder logic (Siemens 1500 preferred).
• Working knowledge of sensors, instrumentation, motor controls, and panel wiring.
• Ability to read and interpret electrical schematics, P&IDs, and control narratives.
• Handson experience building and testing electromechanical systems.

Preferred Qualifications:

• Experience with OPCUA, Raspberry Pi/Arduino, automation scripting (Python), SQL database design.
• Experience supporting DoD/DoE, CUI, or controlled facility environments.
• Experience planning and executing FAT and integration test events.
• Exposure to electrical/panel work is beneficial but not required.

Requires ability to:

• Work well in a small, fast-paced and mission-driven environment with co-workers, management, and client.
• Demonstrate innovation, quick learning, excellent communication skills and adaptive thinking.
• Work independently with minimal supervision, making rational decisions, and exercising good judgment is essential.

Work Environment

• Office, Lab, and field environment.

Attendance

• Normal workdays are from 7:30 a.m. through 4:30 p.m. Central Time, Monday through Friday. Alternate work schedule can be negotiated.

• Support will be provided as needed during this time frame, but small efforts may be made at any time to support operations.

Invariant Corporation is an Equal Opportunity Employer. All qualified applicants will be considered without regard to race, color, religion, sex, national origin, disability, or veteran status.

Invariant is a drug-free workplace.

Headquartered in Huntsville, Alabama, Invariant is a 100% employee owned, non-traditional defense contractor providing advanced engineering solutions to support national defense, homeland security, and law enforcement. We are ISO 9001 certified with secure facilities, labs, and high bay space performing advanced manufacturing, integration, assembly, and testing of mission critical systems. Join a team where innovation fuels impact. At Invariant, every voice contributes, and every employee-owner shares in the success of our mission to protect those who protect us. We’re home to engineers, developers, and specialists—web builders of mission-critical systems, united by purpose and driven by pride. As a 100% employee-owned company, your work doesn’t just power national defense—it helps power your future. Ready to take the next step in your career? Explore our current openings and discover how you can make a lasting impact while building ownership in everything you help create.

Company Description

Headquartered in Huntsville, Alabama, Invariant is a 100% employee owned, non-traditional defense contractor providing advanced engineering solutions to support national defense, homeland security, and law enforcement. We are ISO 9001 certified with secure facilities, labs, and high bay space performing advanced manufacturing, integration, assembly, and testing of mission critical systems. Join a team where innovation fuels impact. At Invariant, every voice contributes, and every employee-owner shares in the success of our mission to protect those who protect us. We’re home to engineers, developers, and specialists—web builders of mission-critical systems, united by purpose and driven by pride. As a 100% employee-owned company, your work doesn’t just power national defense—it helps power your future. Ready to take the next step in your career? Explore our current openings and discover how you can make a lasting impact while building ownership in everything you help create.