Pros
Shutterfly has surprisingly good work life balance and joyful atmosphere depending upon which team you work for. I have less idea about manufacturing and work in lab but Creative Design, IOPS, new re-architecture team, NodeJS/Javascript UI developer roles, etc are very good opportunities in SFLY.
Kontras
CEO is smart ,CTO is smart but most VPs, Directors, Architects(there are one good one I know but majority just suck) and Managers are too dumb and are afraid of being exposed to CTO,CEO so end up hiring their subordinates(mid level managers) who are dumb and these directors and mangers keep constantly fighting with each other. Many new developers may find it easy unless you are directly replacing the old folks but for some old folks who own the massive size of monolithic codebase(think of same humongous jar library coded between 2003-1015 running inside font end backend and middle tier server pools) struggle all alone in keeping up with new feature releases.