Planning Resources
Events
View our Communities
Talk with an Advisor
At the heart of Allegro Richmond Heights is a team of dedicated professionals who bring not only years of experience to their roles, but also a deep passion for enhancing the lives of residents and their families. Each team member plays a vital role in shaping the welcoming, supportive environment the community is proud to offer. Meet the incredible individuals behind the scenes:
Trista McWilliams
Executive Director | Certified Dementia Practitioner
With over 13 years of experience in the senior living industry, Trista McWilliams leads with compassion, integrity, and a heartfelt commitment to enriching the lives of older adults. For the past five years, she has served as an Executive Director in Missouri, and for the last four years, she has held her Certified Dementia Practitioner (CDP) certification—further enhancing her ability to support residents and families navigating memory care.
Trista holds a Bachelor's degree in Public Relations from Southern Illinois University Carbondale. Her passion for senior care is deeply personal, inspired by treasured time spent with her grandparents and early visits to local nursing homes that taught her the importance of connection, respect, and listening.
Trista currently resides in Troy, Illinois, with her fiancé Brendon—who also works in senior living—their two children, Analee and Liam, and their beloved pup, Georgia. As a family, they enjoy traveling, cruising, attending concerts, and making lifelong memories. For Trista, the greatest joy in her work is creating an environment where seniors feel seen, heard, and empowered to thrive with dignity and purpose.
Cathie Marks
Lead Senior Living Advisor
Cathie Marks brings over a decade of experience guiding families through the often-emotional journey of finding the right senior living solution. Her background in sales and marketing is matched by a deep well of compassion and a gift for creating connections that matter.
Cathie works closely with families every step of the way—from exploring care options to coordinating smooth move-ins—and partners with healthcare professionals, social workers, and elder law specialists to ensure a seamless transition. Trained in dementia care and cognitive wellness, she approaches every conversation with understanding and empathy.
In addition to her professional contributions, Cathie is an active nonprofit board member supporting both animal welfare and public safety. She and her husband recently celebrated 39 years of marriage and enjoy life with their two rescue dogs, Sophie and Penelope.
Jas Mehmedovic
Dining Services Director
Jas Mehmedovic brings more than 18 years of culinary expertise to our community, with a career rooted in passion, creativity, and a relentless pursuit of excellence. Since immigrating to the United States in 1999, Jas has honed his skills in high-volume kitchens while developing a reputation for outstanding leadership and guest satisfaction.
Jas takes pride in crafting meals that are both nourishing and joyful, always prioritizing quality, presentation, and the individual preferences of those he serves. He excels in menu development, team management, and accommodating a wide variety of dietary needs.
Beyond the kitchen, Jas is a devoted husband and proud father of two. His personal and professional lives are guided by values of care, respect, and continuous growth, making him not only a trusted leader but a beloved presence in the community.
Jackie Siering
Ensemble Memory Care Director | Certified Dementia Practitioner
Jackie Siering has been a dedicated member of the Allegro team for over three years, beginning her journey part-time while pursuing her Master’s in Gerontology at the University of Louisiana Monroe. After graduating in 2022, Jackie transitioned into a full-time role, bringing with her a strong academic foundation in dementia care and assisted living management.
Jackie’s passion for working with seniors living with dementia is deeply personal. It began in high school after her grandmother, Rachel, was diagnosed with Alzheimer’s. What started as a volunteer project in a memory care facility soon turned into a calling—one that led her to pursue roles in senior living and find her niche in activities and resident engagement.
Since joining Allegro, Jackie has continued to grow both personally and professionally. She recently earned her certification as a Dementia Practitioner and founded a caregiver and loved one support group to help others navigate the emotional challenges of dementia. Having walked the journey herself, Jackie understands how isolating it can feel and is proud to offer a safe, supportive space for families in need.
Jackie brings a wealth of knowledge, heartfelt empathy, and a deep commitment to every resident and family she serves—making her an invaluable part of the Allegro community.
Eldin Mujakic
Maintenance Director
Eldin Mujakic’s journey in senior living began long before he became a Maintenance Director—it started at just 14 years old as a dishwasher. That early experience sparked a deep and lasting passion for serving seniors and creating environments where they feel safe, cared for, and at home. With over five years of leadership in maintenance, Eldin brings both expertise and heart to his role, ensuring every detail supports residents’ well-being. When he’s not at work, Eldin cherishes time with his fiancée and their two children, ages 7 and 4, making family memories and enjoying the great outdoors at the Lake of the Ozarks.
Together, this team brings heart, skill, and dedication to everything they do. Their shared mission is simple yet powerful: to create a community where residents feel valued, supported, and empowered to live beautifully every day.
To learn more about Allegro Richmond Heights, click here.
Comments