Jennifer Greene has spent more than 15 years building software for different kinds of companies. She's built software test teams and helped companies diagnose and deal with habitual process problems so that they could build better software. Jennifer founded Stellman & Greene Consulting with Andrew Stellman in 2003 Andrew Stellman and Jennifer Greene are both veteran software engineers and project managers. They created Stellman & Greene Consulting in 2003, with a focus on software development and management consulting. Together, they have written bestselling and highly acclaimed books for O'Reilly, including "Applied Software Project Management" (9780596009489) and "Head First PMP" (9780596102340).