Looking for a social media marketing agency serving San Diego and Los Angeles that truly understands small businesses?
We’re a small, nimble team of content creators, analytics experts and community managers helping local and growing companies build visibility, engagement, and sustainable growth online. We specialize in working with entrepreneurs and small brands, the “little guys” with big goals, using smart strategy and creative content to deliver mighty results across Southern California.
➡️ Book a completely free, no-obligation phone call to see how we can support your business.
Meet Shelley
Shelley Simpson
Founder & CEO
Shelley Simpson is the founder of Small & Mighty Marketing and a marketing strategist with over 15 years of experience spanning marketing strategy, branding, and front-end web design. She has led B2B, B2C, and nonprofit campaigns for organizations ranging from small businesses to national brands across industries, including wellness, real estate, LGBTQ matchmaking, law, nonprofit, accounting, travel, television, education and pet rehab products.
Throughout her career, Shelley has collaborated with global companies such as HP, EA Games, and Metro PCS, refining both her technical execution and her strategic approach to growth. That experience (combined with a Master's in Marketing from WGU) shaped her ability to see the full system behind marketing, how content, platforms, timing, and audience behavior work together, and where small adjustments can create outsized results.
Her approach is influenced by aerial arts: balance, control, momentum, and trust. Just as strength alone isn’t enough to stay in the air, Shelley believes effective marketing comes from alignment, not brute force. Strategy first. Execution with intention. Movement that looks effortless from the outside because the work underneath is solid.
In addition to her client work, Shelley is a former lecturer at Pacific New Media at Chaminade University and has served on the boards of the San Diego Equality Business Association and the Social Media Club Hawaii Chapter. These roles reflect her long-standing commitment to education, community, and ethical growth.
At the core of Small & Mighty Marketing is Shelley’s passion for helping business owners stop guessing and start moving forward with clarity. She partners with organizations that want consistent visibility, smarter systems, and marketing that actually supports the business they’re building.
Read the newest Client Case Study
What some of my clients have said about me...
Small & Mighty was instrumental in getting my social media marketing campaign off the ground. She worked with me to create a comprehensive strategy, was truly insightful into all the things that should be considered when designing content and really impacted the bottom line for my company. Her work is solid, proactive and exactly what my small business needed.
Dave Fowlie, Bear Voyages
Shelley singlehandedly spearheaded my social media and online presence for nearly 8 years. From blog posts, to videos, to email marketing, she created evergreen content that STILL brings a ton of traffic to my site. Her strategic eye helped grow my social audience, my email list, and ultimately my business.
Dr. Frankie Bashan, Little Gay Book
Shelley built a website for me that was beyond what I could have imagined. She listened intently to all my ideas and thoughts about how I wanted to appear online and created a site that is beautiful to look at, easy to use, and allows me to showcase my talent and get bookings for future shows. I am truly grateful for Small & Mighty's talents.
Are you ready for success?
Every endeavor starts with one small step. We'd love to help you take yours.