Sidney Gillen Owner/Operator, Grand Lake Smart Wiring & GLSW Marketing
Hi, I’m Sidney Gillen, proud co-owner of Grand Lake Smart Wiring and GLSW Marketing. I’m deeply committed to delivering top-tier service, ensuring every project is executed with precision, care, and a hands-on approach. Quality assurance isn’t just a responsibility—it’s a passion.
Before stepping into the world of telecommunications and marketing, I served as a United States Marine—an experience that instilled in me the values of discipline, resilience, and leadership. These principles continue to guide my work and shape my approach to business and life.
Family is my foundation. I’m a devoted husband and father to two amazing sons, and I strive to balance my professional responsibilities with the joy and purpose I find at home. I’m also proud to be an active member of the Grand Lake community, where I value building strong relationships and contributing to local growth.
When I’m not working, you’ll likely find me outdoors—hunting, exploring, and reconnecting with nature. These moments of challenge and reflection fuel the focus and determination I bring to every project.
My dedication to family, service, and community defines who I am. I’m honored to be part of the Grand Lake region and proud to help shape its future through the work we do at Grand Lake Smart Wiring and GLSW Marketing.