Machine Zone, the developer of free-to-play hits Game of War: Fire Age and Mobile Strike, is currently hiring for three game design positions at its Palo Alto, CA headquarters.

The vacant positions are as follows:

• Senior Game Designer
• Lead Game Designer
• UI/UX Game Designer

The successful applicant in all roles will have significant experience in the field, with a background in MMOs and "success with games based on a virtual-goods business model" considered particularly valuable.

All positions are full-time, with salaries undisclosed.

For more information on the roles, and details on how to apply, the full listings are available on our jobs board.