Our Team of Professionals
William H. StollerCo-Founder and Vice Chairman
Stoller is president of The Stoller Group, owning 23 Express offices in Oregon, Washington, Arizona, Nevada, Colorado and California. He also owns Xenium, a professional employer organization and Stoller Family Estate, a vineyard and winery located on nearly 400 acres in the heart of Oregon’s Willamette Valley.
Prior to co-founding Express, Stoller began his career with Acme Personnel Services in 1973 as a consultant trainee and subsequently held positions as branch manager, group manager, district manager and regional manager for Oregon and Utah.
- American Staffing Association, past board member and 2009 chairman
National Association of Personnel Services, past board member
and 2001 chair
- National Association of Professional Employer Organizations, member
- International Franchise Association, member
- Oregon Association of Personnel Consultants, former president
- World Presidents’ Organization, Oregon chapter chair
- A-dec Advisory, board member
- Pacific University Board of Trustees, member and past chairman
- Rotary Club of Portland, 35-year member and former president
Education and Certifications:
- Bachelor of Business and Economics, Pacific University
- Master of Business Administration, Portland State University
- Certified Staffing Professional, American Staffing Association
- Certified Personnel Consultant, National Association of Personnel Services
- Certified Franchise Executive, International Franchise Association
Jenny A. SchwenkePartner, President and Developer
Schwenke graduated from the University of California Davis where she excelled as the captain of the Women’s Basketball team and earned a bachelor’s degree in sociology. She also earned the Certified Staffing Professionals designation from American Staffing Association.
Schwenke began her career with Express Employment Professionals in 1996 as a temporary associate, quickly developed into a leader, and subsequently held positions as staffing consultant, business developer, branch manager, regional manager and vice president of the Stoller region.
Today, Jenny’s responsibilities include growing current franchises and opening new franchises within the Stoller region. She excels at this through self-leadership and accountability. She has a passion for finding the right people to develop into strong leaders who succeed throughout their career. Jenny’s determination, leadership, and unique ability to connect with people, easily translates into her coaching and personal life.
Jenny has deep roots in the Portland/Metro area community. She is been an active youth sports coach for over 15 years and has coached all ages including primary, middle school, high school and college athletes. Jenny is just as passionate about volunteering as she is coaching. She currently volunteers her time as a “Big Sister” for Big Brothers Big Sisters Columbia Northwest and has remained an active member on their board of directors since 2008.
While passionate about work, coaching and volunteering, Jenny’s greatest passion is her family. Jenny has a blended family of 6 and all are extremely active as student athletes, partaking in a variety of different sports including basketball, football and soccer. Being a committed mother, mentor, and coach is what Jenny knows as normal. She loves giving back in the workplace, the community and her family, and is a great example of how one person can affect so many lives.
Wayne MarschallChief Financial Officer of The Stoller Group
Marschall holds a Bachelor of Science in Finance degree from Northeastern University and a Master of Business Administration from George Fox University.
Marschall began his 21 year career with Shell Oil Company and held positions of increasing responsibility in the petroleum refining and chemicals businesses in various U.S. locations and also Corporate Finance. As an expatriate in the U.K. for three years, he served as International Finance Director for a business unit of Shell and was responsible for the finance activities within Europe, Middle East, Africa and Asia.
Wayne is active in the Portland, Oregon business community serving as Board Member and President of the Portland Chapter of Financial Executives International. FEI is a non-profit, international organization of senior finance executives with over 11,000 members.
Nina CisnerosDirector of Recruitment and Credentialing
Christina MunizClinical Director
Christina’s clinical specialties include neurosurgery, orthopedic surgery, and acute medical-surgical nursing. She enhanced her leadership skills by serving as a charge nurse of a 36-bed unit. Christina has been involved in orienting new nurse employees, as well as precepting and mentoring nursing students during their clinical rotations.
Prior to her career as a registered nurse, Christina spent 10 years in business management and sales, real estate, and property management in her home state of Hawaii, on the island of Oahu. The interpersonal and problem-solving skills she developed during this time has enabled her to better manage complex situations she has encountered as a nurse.
In August, 2016, Christina accepted the position of National Clinical Director of Express Healthcare Professionals. She is excited to combine both her clinical knowledge and her business background to support the clinical needs of Express Healthcare Professionals.
Caring for people and forming relationships with her patients and coworkers is Christina’s passion. She believes in providing safe and exceptional care to every patient she encounters.
Christina is currently pursuing her Master of Science in Nursing Leadership and Management through Western Governors University.