Lex Helsel
Director of Research & Evaluation

Dr. Alexis Helsel has professional experience conducting applied health research and program evaluations for several federal agencies, including NIH and DOD. She has contributed and managed mixed-method scale evaluation projects that include bibliometric analyses of program outcomes and impacts and network analyses. Dr. Helsel has extensive experience abstracting administrative from NIH databases, including QVR, IMPACII, RePORT, iCite, as well as PubMed, Web of Science, USPTO, and Federal RePORTER. She also has experience using publication and grant data to construct research networks using VosViewer and CitNetExplorer. Dr. Helsel also has a strong record of effective communication and developing evidence-based recommendations. She has co-authored 20 briefings of research and evaluation findings for senior government and military stakeholders, eight technical reports, one peer-reviewed publication, and 12 professional conference presentations. She has trained and provided technical guidance on epidemiologic and evaluation methods to multi-disciplinary teams of Masters- and PhD-level scientists. She is proficient with STATA, SAS, and Microsoft Access, Excel, and DeDoose. Dr. Helsel earned a PhD in epidemiology from the University of Pittsburgh. 

Amy Hein
Vice President, Strategic Staffing and DoD Accounts

What does it mean to be the Director of Scientific Workforce?  

A lot of the work we do at Ripple Effect isn’t done at Headquarters; many contracts involve placing our people directly at client sites. So, I’m responsible for developing best practices for hiring and managing our employees at those client sites, like NIH and Fort Detrick. I also build close relationships with our clients and employees to ensure we find support that fits an agency’s culture and mission needs.  

What’s the biggest challenge you face in your role? 

Having limited face-to-face communication with the people I manage and support is a huge challenge. I can’t pretend to know what it’s like to be in their shoes every day. So, I listen. I understand their needs, empathize, and help problem-solve. There may be a physical divide between me and client sites, but I want my Scientific Workforce and clients to know I’m always there for them. 

What are some of your hobbies? 

I love to do anything active—I’m a runner and I coach my son’s sports teams. On the other hand, I love naps. On the weekend, you can find me taking a catnap to recharge for the next week. 

Fun fact about you? 

I was in ROTC! As a part of my program, I flew glider planes. Scary, but a big confidence booster.   

Advice to young professionals?

Do some soul-searching about what’s most important to you in your career—is it the work? The people? A company mission and culture? Then, find opportunities that move you down that path. If something is truly important to you, don’t take no for an answer.

Kristy Riordan
Director of Research & Evaluation

Tell us about your career path. What were you doing before Ripple Effect? 

After years of studying and training to be a teacher, I realized I cared more about social science and big-picture policies that affect lives, rather than being the one teaching reading and math. So, I switched gears. Before Ripple Effect, I worked for the Army and evaluated behavioral health programs. 

What’s a hobby of yours? 

I am an avid reader, especially Stephen King novels. It’s hard to find the time with three kids, but getting to read on vacation or on an airplane is when I’m the happiest. 

Why is Research and Evaluation so important to what Ripple Effect does? 

If you aren’t willing to look at yourself and see how you can improve, you probably aren’t approaching your business in a way that has fidelity. The government hasn’t always done this well, but we do! So, we help clients measure, analyze, and better understand how to improve and learn from past mistakes.  

What is a funny quirk about you that people might not know? 

I’m a big germaphobe. Being a health researcher doesn’t help that.

Advice you would give a young professional? 

What my father always told me: You are going to work for the vast majority of your life, so do something you can take pride in and enjoy doing.  

Tierra Terrell-Johnson
Senior Human Resources Manager

Tell us about your career path. How did you get here?

I studied at the University of Wisconsin-Madison (Go Badgers!) and got my MBA from Concordia University. I concentrated on Human Resource Management because I wanted to prove that HR professionals can be analytical, strategic, and have a seat at the business table.

What motivates you?

I’ve made it my mission to ensure that when you come to work at Ripple Effect, you bring your whole self and feel comfortable doing so. We’re all equal here, and I will always fight for that.

What are some of your hobbies?

I love to organize (and color-coordinate!) I’d be a professional organizer if I could. My favorite store is Staples—I could spend a whole paycheck there.

Advice for future professionals entering your field?

Develop your people’s leadership skills, especially junior employees. Train them and involve them. As companies grow, they need succession plans—and if you invest in your people, they will invest in the company in return.