[1] He lived in Kraków in the early 1980s, then moved to Los Angeles in 1987 or 1988[2][3] and attended California Institute of the Arts from 1989 on a full scholarship.

[5] He co-founded the Los Angeles Jazz Quartet in 1993, with saxophonist Chuck Manning, guitarist Larry Koonse, and drummer Kevin Tullius.

[8] In 2010 Oleszkiewicz was a co-leader with Peter Erskine, Bob Mintzer, and Alan Pasqua on the album Standards 2: Movie Music.

[13] He was part of the Peter Erskine Trio that was nominated for the 2022 Best Jazz Instrumental Album Grammy Award for Live in Italy.

[5] With Peter Erskine and Alan Pasqua With Peter Erskine, George Garzone and Alan Pasqua With Kei Akagi With Bill Cunliffe With Kait Dunton With Yelena Eckemoff With Peter Erskine With Terry Gibbs With Anna Maria Jopek With Larry Koonse With Charles Lloyd With Bennie Maupin With Bob McChesney With Brad Mehldau With Josh Nelson With Sara Niemietz With Jack Nimitz With Alan Pasqua With Bobby Shew With David Sills With Kuba Stankiewicz and Peter Erskine With Gavin Templeton With Ben Wendel With Mike Wofford With Aga Zaryan Main source:[16]