Slalom at its roots is a sales focused company that feels like it. People with a technical skillset (with or without people skills) will be better compensated at a tech company that prioritizes technical ability.
The 401k match is dreadful
Higher levels feel very white/male/Accenture
No paid paternity leave
They take FOREVER to fire the truly terrible employees, foisting a lot of painful problems on others who have to clean up the mess and get things done.