Controls & Instrumentation Engineer
Location: Huntsville, AL
Job Type: full-time
Company: Invariant Corporation
Job Description Apply Now
Controls & Instrumentation Engineer
26-040
Invariant Corporation is seeking a full‑time 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 system‑level troubleshooting on prototype and production equipment.
Duties Include:
- Design and update electrical schematics and wiring diagrams in compliance with UL 508A and internal standards.
- Design and build control panels, including component selection, layout, wiring, and quality inspection.
- Program, configure, and troubleshoot PLC‑based 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&ID‑based control narratives, and system block diagrams.
- Implement automation for data parsing, validation, and management using Python and SQL.
- Assist in networking tasks including Layer‑2/Layer‑3 diagrams and system interface planning.
- Prepare documentation, work instructions, troubleshooting notes, test reports, and as‑built drawings.
Minimum Requirements:
- BS in Electromechanical Engineering, Electrical Engineering, or a related discipline.
- 1–2 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.
- Hands‑on experience building and testing electromechanical systems.
Preferred Qualifications:
- Experience with OPC UA, 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.
This position is expected to be performed only in the state of Alabama.
Subject to the provisions of Code of Alabama§ 40-18-370, the Company shall give good faith consideration to Alabama residents for employment at the Project.
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.