We're Hiring. Senior Group Leader - Analytical Chemistry 🚀. Are you an experienced analytical scientist with leadership experience in a CRO or Clinical Testing Lab (CTL). Do you thrive in a hands-on environment where you can mentor junior analysts, drive method development, and ensure operational excellence. If so, we want you on our team. Role. Senior Group Leader - Analytical Services. Location : Itasca, IL. Customer. A leading, global testing...