Quick answer — Seiya Numata worked on Puella Magi Madoka Magica the Movie Part 1: Beginnings (Assistant Animation Director), When They Cry Kai (Key Animation), Strawberry Marshmallow Encore (Animation Director) and 11 more anime.
Seiya Numata worked on Puella Magi Madoka Magica the Movie Part 1: Beginnings (Assistant Animation Director), When They Cry Kai (Key Animation), Strawberry Marshmallow Encore (Animation Director), White Album 2 (Chief Director), Bleach the Movie: Fade to Black (Key Animation), Love You Baby (Key Animation), Nisekoi OVA (Director), Shakugan no Shana S (Animation Director) and 6 more.