Pierce takes up the role of marketing manager with immediate effect and will have responsibility for marketing Jumbo's full range of children and adult puzzles and games across all platforms.
She is tasked with building the Wasgij, Stratego and Falcon brands.
Pierce has previously worked at video games publishers Sega and Activision.
Gray Richmond, managing director at Jumbo, said: "We are excited to welcome Katherine Pierce to the Jumbo team. With extensive experience in the video games industry, including time at Sega and Activision, we look forward to the knowledge and expertise that she will bring to the role."