FALL 2025 17 DUKE DETAILING: DBU ALUMNUS GAVIN DUKE Turned Passion into Purpose DBU Alumnus Gavin Duke ‘24, owner of Duke Detailing, earned his Bachelor of Business Administration in marketing from the Carter School of Business, where he developed the skills that would support his entrepreneurial journey that began long before college when his parents gifted him a 2007 Ford F-150. “I knew that I wanted it to be the best-looking F-150 in the school parking lot. I would wash it on weekends, order new parts for it, and do everything in my power to make it look brand new,” Gavin shares. What started as a personal passion quickly became a side hustle, then a calling. Gavin launched Duke Detailing in 2022 during his sophomore year. “It originally just started as a side hustle to make some extra money in college,” he admits. “The moment I felt called to this was my senior year of college. Everything I learned at school showed me that I loved running my business and bringing glory to God through it.” One of his most influential mentors was DBU Professor Sandra Williamson, who taught many of his marketing courses. “I could see the passion she had for marketing and teaching,” Gavin reflects. “She was a huge supporter of mine.” Connections through the Texas Business Hall of Fame also offered guidance and inspiration from other entrepreneurs. What began as a small venture has grown into a full-time business with two employees and a steady stream of Dallas-area clients. Gavin credits his success to his faith: “I am just a steward of what God has given me; without His guidance, none of this would be possible. Constant reliance on Him is the only reason I have gotten this far.” Gavin’s wife, Hefzi Duke ‘24, has been a consistent source of support. The two met during their freshman year and began dating in spring 2021. When the business gained momentum in 2022, Hefzi championed his efforts, and they married in 2024. Looking ahead, Gavin envisions growth: “In the next 3-5 years, I see this business growing to have three vans and over eight employees detailing all over Dallas. I feel God calling me to give my all to this and to glorify Him through this.” Learn more at www.dukedetailing.com. When Joseph Arze ‘20 arrived at DBU, he didn’t drink coffee. That changed after the Coffeehouse opened in 2018, where the warm atmosphere and staff convinced him to try black coffee for ten days. He was hooked, and by 2019 he joined the team as a barista. In 2020, Joseph traveled to Guatemala, where he apprenticed at Crossroads Cafe near Lake Atitlán, learning the process from farm to export. “I learned the basics of roasting coffee, buying green coffee, and how coffee is grown, processed, and exported,” he shares. Back on-campus, Joseph became Coffeehouse manager, opening a second location and leading a team until 2022. “I formed some of the greatest friendships and got to lead an amazing group of people. DBU gave me the opportunity to run with the shop, dream big, and pursue excellence with a passionate group of baristas.” He also gained support from Dr. Ross O’Brien, Chair of Entrepreneurship in the Carter School of Business, who encouraged him to see coffee as a ministry tool. At the Coffeehouse, Joseph met Andy Norton, who became his business partner. “It felt ordained as we naturally saw opportunity in coffee catering…Andy loves the Lord and is as passionate about coffee as I am, so the partnership has worked beautifully from day one.” In March 2023, they launched Harp & Bowl Coffee Co. MEET JOSEPH ARZE DBU Alumnus and Co-Founder of Harp & Bowl Coffee Co. “Our offering list is intentionally crafted to bring people along with us on our journey,” Joseph explains. “It’s not just about quality, but about relationships and consumer education.” Harp & Bowl sources only specialty-grade beans, working with producers they believe in while building direct-trade relationships. “We’ve had the chance to work closely with producers who care for their people and communities.” Industry events like the Specialty Coffee Association conference inspire them to grow. “The Lord has provided for our business in unexpected ways. We have faith He has a plan for what we’ll do and how we will continue to speak into the lives of those we serve.” Joseph is married to Emily Jeanne Arze ‘25, his greatest supporter. Expecting their first child, they look forward to serving others in both life and coffee. Learn more at www.harpandbowlcoffee.com.
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