ABOUT US. This is an opportunity to join one of Des Moines fastest growing waste management companies. Established in 2017, Waste Solutions of Iowa (WSI) purchased the 37-year-old pre-existing company Jim's Johns in March of 2018. Since that time WSI is quickly becoming the leader in offering high quality service solutions for roll-off dumpsters, grease and interceptor services and all things related to portable restrooms. Our new software system...