Spectrum Offer

Hi, One of my friends got an offer in Spectrum as Senior Software Engineer. He got confirmation and offer from HR. He has 6 years of software development experience Below is the offer details? Can some one Pl tell me is it a good offer or he can negotiate it Base Pay: 130000 Bonus : 10% 401k : 6% Also does spectrum offer any RSU's for Senior Software engineer? How much signon bonus he can ask for senior software engineer position? #engineering #software #swe