Complex sentence: In 1998, Johnson became creative director for the software company ePlanet, Inc. in 1998--99, aJohnson became Creative Director at Ububu, a San Francisco-based startup in 1998, and Electric Planet (ePlanet), where he was Creative Director in 1999.
Split into simpler sentences: In 1998, Johnson became creative director for the software company ePlanet, Inc. in 1998--99. For example, Johnson became Creative Director at Ububu, a San Francisco-based startup in 1998, and Electric Planet (ePlanet), where he was Creative Director in 1999.