Kerstin qualified as a midwife in France in 2008 and later relocated to London in 2010.

For 12 years, she worked at L&G NHS trust in the Birth Centre, as a community midwife's team leader, and as the infant feeding lead. She is a Professional Midwifery Advocate and has completed restorative clinical supervision with midwives and birth reviews with parents.

Her areas of interest are family planning, infant feeding, optimal fetal positioning, optimizing childbirth experiences, homebirth, staff wellbeing, complementary medicine, hypnobirthing, and gender studies.