I am an algebraist interested in a broad range of areas. I`ve worked on semigroups, geometric group theory, representation theory, self-similar groups (aka automaton groups), profinite groups and random walks on semigroups and groups. I`ve been particularly interested in interactions between these areas and Computer Science and am fond of algorithmic questions. I`ve also dabbled with operator algebras associated to etale groupoids and inverse semigroups. Currently, I am interested in applications of finite semigroup theory to finite state Markov chains. ©