Meet the team

As our CFO, Anne-Marie Evans partners with the team to align business strategy to operations, as well as lead functional units in driving growth across the business. She also manages global relationships with our parent company. With nearly 20 years of experience, Anne-Marie is well-versed in finance and accounting while also providing direction to company support functions such as IT, HR, and Office/Facilities administration. She has a BS in Accounting from George Mason University – School of Management Anne-Marie Is a mom to four energetic kids who help keep her grounded and filled with joy (most days). She enjoys long runs and weight lifting. If she were not a CFO, she would most enjoy traveling the world or décorating homes with other people's money.

Katie Markwell leads our Consulting Services including service delivery focused on customer experience, operations, and agile delivery. With a focus on results and collaboration, she finds the win-win between effort and outcome, flexibility and consistency, and individuals and teams. Under her leadership, Celerity has earned world-class Net Promoter Scores, innovation awards, and client accolades. Katie brings 15 years of experience in strategy, facilitation, and collaborative business execution. She has helped private and non-profit organizations across various industries and sizes both as an in-house leader and as a consulting partner. Katie has a B.A. in English from Wake Forest University and a M.A in Sociolinguistics from Georgetown University. You will often find Katie with a notebook, a question, a smile, and a scarf. She enjoys leisure time with her husband and two Lakeland terriers.

Marty Brennan leads our Financial Services practices. Marty builds and empowers collaborative teams, breaks down organizational barriers, works across all levels, and guides organizations through periods of transition and uncertainty. A proven problem solver, he drives high client satisfaction, delivering measurable, sustainable results. Marty brings over 20 years of technology consulting experience developing and implementing business, operational and IT strategies to both private and public sector clients. Marty previously was an executive at North Highland, Alion Science & Technology, Washington Consulting and worked for KPMG Consulting and Arthur Andersen. Marty has a BA from Yale University and an MBA from McDonough School of Business at Georgetown University. In his spare time, Marty is an active choral and a capella singer, serves in a leadership role for a university advisory board, and can be found touring vineyards with his wife and dog.

Dr. David Nickelson is the Senior Client Partner leading Celerity’s Health & Life Science practice. Trained initially as a behavioral scientist and an attorney, Dr. Nickelson focuses on helping health-focused organizations develop digitally enabled solutions to improve quality, efficiency and effectiveness. He serves as a lead strategist and trusted client advisor to executives and other leaders at Fortune 500 companies in the provider, payor, pharmaceutical, life science, medical device, and consumer/retail health sectors. He brings over 20 years of healthcare consulting experience developing and implementing business, operational and IT strategies to both private and public sector clients. Dr. Nickelson earned an MS and PsyD in Clinical Psychology – as well as a JD (cum laude) – from Widener University. He earned his BA from the University of Minnesota. He spends his spare time with his lovely wife (also a clinical psychologist), two wonderful daughters, an unrelenting French Bulldog, and a well-used indoor rowing machine.

Kathy leads the firm’s endeavors to translate business trends and priorities into marketing strategies, campaigns, and programs. Working collaboratively across the business, Kathy and her team focus on purpose-driven marketing and the value alignment between people and technology. Her current initiatives include developing and implementing customer-centric programming around the future of the Responsive Enterprise. Kathy began her career at Harvard Kennedy School’s Center for Business and Government, where she helped launch the University’s Corporate Social Responsibility program. After coming to the Washington, DC metro area 16 years ago, Kathy went on to lead integrated brand, marketing, and communications for both Booz Allen and Ernst & Young’s Government and Public Sector practice. Kathy holds an MBA from the John’s Hopkins Carey School of Business, an MTS from Harvard University, and BA from Providence College. A travel fanatic, retired food blogger (but still-active gastronome), and ocean lover, Kathy lives with her husband and two children in Arlington.