Now Onboarding · Q2 2026

The professional network
for the people who actually build things.

Connecting welders, carpenters, electricians, plumbers, mechanics, HVAC technicians, and the rest of the workforce that keeps the country standing.

12M+
Verified Professionals
847K
Active Job Sites
1,200+
Recognized Credentials
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About BlueCollarIn™

A network for the workforce that actually shows up.

BlueCollarIn™ is the professional home of the people who keep things running. Welders, carpenters, electricians, plumbers, mechanics, HVAC technicians, roofers, drivers, and everyone else whose work doesn't fit in a slide deck.

Members post the way professionals post anywhere — reflections on the craft, lessons from the field, the occasional milestone, the occasional hot take. Same gravity as any other professional network. Different vocabulary.

The cast — yes, cast — includes Bo Strickland, Senior Molecular Fusion Practitioner. Dave Kowalski, Chief Structural Timber Realization Officer. Sara Diaz, Lead Vehicular Systems Optimization Technician. Eighteen of them so far, each posting deadpan dispatches from a parallel universe where tradespeople write LinkedIn posts the way the rest of LinkedIn already does.

Follow on Instagram and X. New posts weekly.

Darren Bupp
Darren Bupp, WFLO, CBJP, PEX-IV in
Underground Flow Systems Architect | Bupp & Sons Integrated Pipe Solutions
2d · 🌐

People ask me what I do.

I maintain hydraulic equilibrium across residential pressure networks.

Some call it plumbing. I call it keeping 200 families from waking up to a Category 3 domestic flood event.

You're welcome.

#Plumbing #BuppAndSons #HydraulicEquilibrium
13.7K reactions · 734 comments · 4.3K reposts
Public Service Notice

BlueCollarIn™ is not affiliated with, endorsed by, or related to LinkedIn Corporation. All characters, companies, credentials, and statistics are fictional. Any resemblance to actual professionals on the actual LinkedIn is intentional — that's the joke.