Comment by Animats

Here's a typical job in that category. Boring but practical Chicago Dryer.[1]

    Industrial Controls Engineer
    Chicago Dryer
    Chicago, IL

    $80,000 to $110,000 Yearly
    Vision, Medical, Dental, Paid Time Off, Life Insurance, Retirement
    Full-Time

    5+ years of experience in controls & software engineering
    High-level knowledge of one or more programming languages (C, Pascal(structured-text))
    Familiarity with Windows, Linux & Realtime operating systems
    Familiarity with electrical codes for industrial machinery
    Electrical design & CAD experience for automation-controls
    Solid knowledge of classical-physics (mechanics & motion)
    Mechanical aptitude and ability to work with hand tools
    Strong troubleshooting and problem-solving skills
    Ability to work well with personnel at all levels
    Beckhoff TwinCat3 experience is a plus
    Jira and GIT experience is a plus
    Electronics design & trouble-shooting is a plus

Leader in the heavy machinery that takes clean linen items after washing and dries, sorts, folds, and stacks them by the ton. There are vision systems and robotic grippers involved. They've been in business for over a century, building heavy duty laundry equipment. It's a very steady business. Probably good job security. The startups making all the noise in clothes folding, such as Foldimate and Laundroid, went bust. Chicago Dryer equipment processed a few tons of laundry while you were reading this.

That's what a blue-collar programming job looks like. But it will be a very clean blue collar.

[1] https://www.ziprecruiter.com/c/Chicago-Dryer/Job/Industrial-...