Jeff Green

Jeff Green is the founder and President of XpanseHR. A consummate HR leader, Jeff spent his early career managing the HR operations within various large corporations. During this time, he saw that many small and mid-sized businesses lacked the breadth and depth of HR resources available to larger companies. With an entrepreneurial drive, Jeff set […]


Gail joined XpanseHR in 2010. She is a seasoned professional with over 30 years of experience in Finance, Administration, and Operations Management. As Vice President of Business Operations, Gail is responsible for overseeing the day-to-day operations of the firm and providing leadership and tactical support to XpanseHR’s Management Service Delivery teams. Gail also plays an […]

David Birnbaum

David joined XpanseHR in 2023 as the firm’s Compensation Practice Director. A senior Compensation and Benefits executive, David possesses over 30 years of experience in designing and implementing innovative compensation and benefits programs that support business growth and drive employee engagement. Throughout his career, David has served as a trusted compensation advisor to business leaders […]

Michele Underhill

Michele joined XpanseHR in 2015. A dynamic HR consultant, Michele possesses a diverse background supporting companies of various sizes and industries, including non-profit, healthcare, technology, education, manufacturing, museum & arts, and real estate. With over 30 years of HR expertise across all facets of HR, Michele is able to quickly understand, support, and impact client […]


Albert possesses over 20 years of Human Resources experience within non-profit, for-profit and corporate environments. Over the course of his career, he has helped guide businesses on talent acquisition, payroll and benefits administration, performance management, safety and health, policy implementation, and employment law compliance. As HR Consultant, Albert provides strategic outsourcing and project-based HR solutions. […]

Jarod Holloway

Jarod brings over 15 years of industry experience to his role at XpanseHR, having previously worked within the pharmaceutical, healthcare, and education sectors across all functional areas of HR. Throughout his career, he has worked closely with stakeholders, management, and employees to create productive work environments through coaching and counseling, improving HR functions, processes, and […]

Simone Daniels

Simone possesses over 15 years of industry expertise, having worked within the for-profit and non-profit sectors in both HR generalist and management positions. Throughout her career, she has gained extensive experience across a wide array of HR functions, including employee relations, benefits administration, organizational development, onboarding and training, policies and procedures, lean management, and leadership. […]


Prior to joining XpanseHR, Lauren worked in the Energy, Engineering and Healthcare sectors. During this time, she worked as a generalist across all functions of HR, including employee relations, policy development and compliance, talent acquisition and onboarding, and performance management. As Senior HR Associate, Lauren helps provide clients with tactical and strategic support in all […]


Tara holds over 13 years of marketing and communications experience. Throughout her career, she has worked within digital and print communications, social media marketing, event management, marketing campaign development, graphic design, and brand development and alignment. As Marketing Manager, Tara works closely with leadership and business development to create and execute marketing strategies and campaigns […]