Gut+Science explores employee engagement insights you can act on, from CEOs you can trust. Get ready for high energy interviews led by employee engagement evangelist Nikki Lewallen—ones that’ll have you rethinking what it means to build successful people-first cultures.
What happens when marketing stops chasing tactics and starts building systems that actually scale?
Nikki sits down with CMO and growth leader Breanne Byrne to unpack what it really takes to build a marketing and growth function that evolves with your business and your people.
Breanne shares her five-phase department maturity model, from reactive to intelligent, and explains why sustainable growth is never just about channels, campaigns, or tech stacks. It is about clarity, customer experience, role alignment, and servant leadership that helps people do their best work. Along the way, Nikki and Breanne explore AI, change management, team strengths, and why growth that lasts always starts with humans.
Whether you are leading a scrappy team, scaling a department, or trying to make change feel more meaningful for your people, this episode will challenge you to think bigger, lead better, and grow with intention.
Additional Resources:
Connect with Breanne on LinkedIn
Learn more about Syntari® AI
Watch Gut + Science (and more) on YouTube!
Connect with Nikki on LinkedIn
Follow PeopleForward Network on LinkedIn
Learn more about PeopleForward Network
Nikki’s Key Takeaways:
- Scalable growth starts with strong foundations, not random tactics.
- Clear goals create alignment across teams and departments.
- AI works best as a human amplifier, not replacement.
- Servant leadership unlocks stronger teams and better performance.
- Sustainable marketing requires constant iteration, learning, and adaptation.
Nikki Gregory
Gut + Science
Gut + Science is a mentoring platform for people-first leaders of all levels. We talk to exceptional leaders who prioritize culture, get fired up about employee engagement, and are excited to share ideas and tools for bettering employee experiences.
We are on a mission to improve employee engagement by inspiring and equipping leaders to help employees thrive at work. Host Nikki Gregory highlights accomplished, people-first CEOs (and executives) that share their powerful mindsets, experiences and tools that have helped them succeed. Content experts share education and inspiration on topics such as diversity and inclusion, emerging and lucid leadership, and corporate social responsibility. We named the show Gut + Science because leaders need both data and experiences to guide decision making.
Nikki is passionate about helping millions love their work, about giving back, about investing in people. In Gut + Science, these callings come to life in the form of high-energy interviews designed to help pave the way for people-first cultures, and give leaders the inside scoop on how to build winning cultures and companies. Nikki has helped countless executives make meaningful, relationship-oriented investments.