Jeri started an online retail business. The nature of the business is not very specific, however, it is documented that she was selling goods online.

Jeri gained notoriety for her work hacking and modifying the Commodore 64 DTV (Direct to TV) console. Her ability to reverse engineer and improve upon existing technology significantly boosted her visibility in the tech community.

Jeri founded JeriTeam (exact founding year is not available, but it was during the 2000s). JeriTeam was a hacker group that focused on reverse engineering and modifying electronic devices.

Jeri joined Valve Corporation. She was hired to do research into Augmented Reality (AR) and hardware development.

Jeri left Valve Corporation. The circumstances surrounding her departure are not completely specified in publicly available data, though the development group she was heading was supposedly disbanded by Valve.

After leaving Valve, Jeri co-founded Technical Illusions with Rick Johnson, focusing on augmented reality technology, specifically the castAR project.

Technical Illusions closed down in 2017. Factors for this included difficulty securing further investment, and shifting priorities for the team.

Jeri Ellsworth founded Tilt Five, a company specializing in holographic gaming using augmented reality. Tilt Five successfully launched a Kickstarter campaign, securing funding for its holographic gaming system.

Jeri continues to lead Tilt Five, focusing on developing and expanding its holographic gaming platform, forging partnerships, and bringing its unique AR gaming experience to a wider audience.