Here are some recorded talks and some lecture notes.

• Video for a talk on Levi restriction for Coulomb branch algebras given online in May 2020.
• Video for a talk on BFN Springer theory given at CIRM in April 2019.
• Video for a talk on Categorification of tensor products and symplectic duality, given in Vienna in January 2019.
• Notes from a mini-course on Representations of GL_n, geometric Satake and categorification given at ETH Zurich in October 2014.
• Notes from Seminaire Bourbaki talk on Categorification, from June 2013.
• Notes from a course on Geometric constructions of representations of GL_n given in Ottawa in June 2009.