This is definitely a scam. I unfortunately fell victim to a scammer once whose messaged me on LinkedIn for a role. He said they were working on a new cryptocurrency platform and if I wanted to check it out. I stupidly downloaded the software which was malware and they managed to infiltrate my current workplace through a keylogger. Thankfully the security team caught the breach and shut it down. I was so naïve. It still irks me to this day that I could fall for it. Always trust your instincts.