Taking the Chance Out of Change

We have a collaborative and mentoring organization in which members are encouraged to seek self-actualization because we believe in enjoying our work. We hire experienced, smart, and humble consultants. Meet the team!

Meet Our Team

Caroline Walker Houston Texas

Caroline Walker



Caroline has 20 years of combined experience in Change Management, Communications, Training and Video Production. She founded Change Corporation in 2011 and has had the privilege of consulting with Houston’s world-class companies and their top talent to successfully deliver critical transformation and process improvement initiatives. Caroline has worked in energy, manufacturing, high technology, finance, and health care. Her sample projects include process safety and operational excellence strategies and processes, personal safety campaigns, SAP and other IT implementations, midstream transportation process improvements, information management (IM) initiatives, and major oil and gas engineering and construction projects in upstream, downstream, and midstream.

Caroline believes in the power of group synergy and building camaraderie to meet the demands of challenging projects. In her consulting work, she approaches OCM as a production that she directs from behind the scenes. She prepares leaders and influencers within organizations to powerfully speak from a platform on which they can share their knowledge and vision for change. This work is something she loved doing at Chevron in 2012 and 2013 for the first and second annual global Major Capital Project Information Management workshop that effectively raised the visibility of best practices for managing engineering information. Caroline understands what it takes to get people working in the same direction to “turn big ships around.” Changing course most often requires getting the maximum number of employees proficiently using new policies, processes, or tools. Fortunately, Caroline sees the tactical pieces that must happen to achieve organizational changes–the numerous and sometimes delicate steps that make up the how.

She is PROSCI® certified and has completed several OCM-related certifications. In her early career, she raised funds and managed an international team of researchers, journalists, translators, and filmmakers to produce an internationally acclaimed documentary film, which was shot on location in five different countries and translated into three languages. The film won the first and second place in U.S. and Russian film festivals, aired on Russian and Polish TV, and was invited to be screened at film festivals around the U.S., Canada, and Europe. This experience was personally transformational for Caroline. Among the lessons she learned, Caroline realized that if one does not worry who gets the credit from the beginning of an endeavor, he/she can give flight to amazing work, great friendships, and authenticity.

Caroline is always passionate about connecting people and sharing global perspectives. Since 2009 and 2006, she has organized Houston ESL (English as a Second Language) and Russian meetups respectively. She also holds a Bachelor of Arts in Professional Writing and Foreign Service from Baylor University.

Scott McMillan Houston Texas

Scott McMillan

Technical Writer


Scott is a technical writer and professional educator who has extensive knowledge of the energy industry. He has more than 25 years of combined experience in teaching, transportation engineering, geographic information systems, and technical editing for engineers, as well as technical writing for people in the oil and gas industry. Additionally, he educated university students on critical thinking, technical writing, and English as a second language (ESL).

Scott’s philosophy is to apply critical thinking to technical writing and language teaching. This way, the client or end user can easily grasp difficult concepts and apply critical thinking to their tasks. If employees can understand complex ideas, then they will also gain confidence to perform all their tasks independently.

Scott earned a Bachelor of Science in Political Science (with Civil Engineering as his minor) from Texas A&M University. He also holds a Bachelor of Arts in Journalism from the University of Houston and a Master of Arts in Applied Linguistics (with Technical Communications as his minor) from Texas Tech University.

Hallie VanManen Houston Texas

Hallie Van Manen

OCM and Communications Consultant


Hallie is an organizational change management consultant with a strong concentration in communications strategy and execution. She partners with our clients’ subject matter experts and leaders to develop strategies and messaging that guides people through the stages of change with presentations, awareness campaigns, and marketing collateral that informs, persuades, and inspires.  In 2017, she led communications for a start-up E&P client focused on Gulf of Mexico.  From 2014 to 2017, she was responsible for communications and event management for the investment management team at Rice University.  Prior at Baker Hughes, Hallie helped launch a change initiative that rolled out a new profitability tool to the US Land business managers and was responsible for training during the implementation road show.  Her analytical skills and knowledge of the business enabled the team to find $3MM of pricing opportunities in Phase I of the roll-out. 

Tina Creger Houston Texas

Tina Creger

Operations Manager


Tina manages the daily operations of Change Corporation and is responsible for building and maintaining efficient internal systems, enabling the company to grow and thrive. Her proactive approach to planning and taking care of business gives Change Corporation consultants more time to collaborate and focus on delivering great work for our clients.  She brings a strong background in financial management, HR, and business management to her role.  Previously, she was Accounting Manager / Office Manager at Guardian Maritime Services, a steamship agency in Pearland, TX.  For 10 years, she managed AP/AR and banking for a CPA and payroll company.  Additionally, she oversaw hiring, onboarding, training, managed staff meetings, and provided broad administrative oversight for the office.   


Change Corporation has received many awards and recognition. These include the “Always On Point Communications” and “#Respect” awards from Client Project Manager.

Our team believes that our client-centered approach and passion for work are the main reasons for our success. To show our gratitude, we continue to provide exceptional services to everyone we work with.


  • Association of Change Management Professionals
  • Association of Talent Development
  • Women’s Energy Network

Training and Certifications

  • PROSCI® Behavioral Change Management
  • Assessing Organizational Culture and Effectiveness (Human Synergistics®)
  • Crucial Conversations (VitalSmarts®)
  • ATD Designing Learning (Association for Talent Development)
  • ATD Master Facilitator
  • Supervisor Essentials
  • Myers-Briggs Type Indicator Professional
  • Situational Leadership
  • AchieveGlobal Coaching
  • Facilitation, Human Resources Training, and Employee Development