Our Team

We are a team of creative, socially-conscious and driven artists and creative thinkers making their mark on the universe through high impact video, film and design.
Award winning, British-born director, Dave Sims, has been making films since age 11. He followed his lifelong passion of becoming a filmmaker by attending the London Film School (LFS) in the mid-nineties. During his time at the LFS he worked in key positions on over 100 short films, many of which went on to film festivals around the world, including Berlin, Munich, Manchester and Camera Image, Poland. After film school Dave moved to Johannesburg to develop original television programming and documentaries for the South African Broadcasting Corporation (SABC). Since returning stateside, Dave has produced thousands of videos for products, events, social media, instructional presentations, and television broadcast over his 25-year career as a professional filmmaker and videographer. As a corporate storyteller specializing in culture branding and employee engagement, Dave’s videos have garnered millions of views on platforms such as YouTube, Vimeo, and Facebook. In addition, he has had over 50 commercials airing nationally and internationally, working with such clients as HEB, Bill Miller Bar-B-Q, YMCA, Facebook, Abu Dhabi Bank, and various law firms. In his free time he has followed his lifelong passion by producing, directing, filming, and editing five feature films and almost 40 short films which have gone on to premiere and win awards at film festivals across the world. Beyond filmmaking, Dave is an avid animal lover and amateur pianist.

Crissy Rivas is the President and Producer of Dave Sims Media and a force of nature, coming to the profession of video production and filmmaking after many years working in the fields of academia, activism and fundraising. As a communications and business operations professional she’s as comfortable building teams, managing organizations, and crafting strategic messaging as she is out in the field interviewing everyone from CEO’s to farmworkers. During her years as a sociologist, she produced the documentary, Voices of the United Farm Worker Movement in Texas, chronicling the struggles and successes of the grassroots Cesar Chavez movement in Texas. Her sociological background bolsters her production approach with ethnographic methodology, qualitative methodology, focus groups, and interview skills which help DSM produce the authentic, yet polished, videos which they pride themselves on. As a communications professional she has used her skills to craft messaging for political candidates and create strategic messaging to raise thousands of dollars for a variety of issues and causes. Crissy is a graduate of The University of Texas at Austin, The University of Texas at San Antonio, and additional Ph.D. studies at The University of California – San Diego.

Karli Gray

Production Manager & Art Director
Karli Gray started out her filmmaking and production career as an extra for an indy movie, and she never looked back. Hooked on the creativity and teamwork, she made filmmaking and video production her life’s career. Her passion and motivation for working in crews led to Karli’s big break working for 4 years on a sports docuseries, Friday Night Tykes, where she developed her intuitive instincts for all aspects of production – from lighting to art direction to setting up the shot to the needs of her team. Karli’s proudest career project to date was the 3 months she spent in 2019 traveling around the country from New York, to Kansas City, to Oregon capturing the stories of cancer survivors. When she’s not on location you can find Karli pursuing her second passion of visiting local, and national, craft beer breweries, watching soccer, especially the USWNT or the Portland Thorns. And in true San Antonio style, she’s a San Antonio Spurs fan too! An avid animal lover, she also has 3 cats, a dog, and a chinchilla. With an eye on the future, Karli is eager to see where this career will take her and what the future has in store. That future looks bright from where we’re standing and we couldn’t be prouder to have Karli, her instincts, her eye, and her intuition on the Dave Sims Media team!

Chris Haley


With Motion graphics, Animation, and 3D generalist skill sets, Chris is uniquely equipped to handle a wide array of various post-production challenges. In his 15-year career, Chris has worked on post-production and animation for countless commercials and corporate projects, most notably working as the VFX supervisor on the $6 million feature film “Criminal Activities” starring John Travolta, Michael Pitt, Dan Stevens and other Hollywood heavyweights. Chris Haley has a wide range of experience making him a veritable Swiss Army knife solution in the post-production arena and a valuable member of the DSM team. His IMDB profile lists a comprehensive list of his professional credits in areas of post-production, visual effects, and animation. 

Robert Gonzales

Graphic Designer & Animator
Robert Gonzales is an award-winning filmmaker and designer. He has designed print and motion graphics for San Antonio’s leading arts and cultural organizations. In his professional and personal work, he is committed to expressing of the region’s unique culture and visual language. In his off-hours, he writes and directs his own short films and animated web series.

Scott Greenberg

Location Sound Mixer
Scott Greenberg brings his talents as a Location Sound Mixer to the Dave Sims Media team with over twenty-five years of film, video, and television production experience. Scott has worked on numerous types of projects: ranging from large scale art installation films, feature films, commercials, television news productions, video productions, and documentary films. He brings his wealth of skill and talent to his collaborations with national and international artists, documentarians, feature film productions, and commercial directors. He has worked in a variety of capacities such as a location sound mixer, news photographer, line producer, production manager, producer and director. Quality sounds is critical to great productions and Scott is an outside the box thinker and problem solver, adept at navigating productions challenges and finding solutions.

Guillermina Zabala

Video Editor

Guillermina Zabala is a multidisciplinary artist, video editor, and educator whose art examines the intersection between the individual and their social-political-cultural environment. Her works have been exhibited in museums and art galleries in Los Angeles, New York, Texas, Miami, and San Francisco; and internationally in Germany, Latin America and Spain. Her photographs are part of UTSA Art Collection and have been published in books and publications. Gisha graduated from Columbia College-Hollywood with a BA in Cinema and is currently a second year student in the M.A. program in Media Studies at The New School. As a video editor, Guillermina has worked on numerous documentaries,
narratives, music videos, and commercial spots, including the award winning features Kordavision and The Most Beautiful of My Very Best Years. Gisha exhibited her video I,
Me, Light in the Octagon Gallery of the McNay Art Museum. She was the first recipient of the Bishwanath and Sandhya Sinha Memorial Fellowship in Media Studies at The New School where she is addressing the topics of media, migration, and creativity. She has also been the recipient of UTSA’s 25 Veinticinco Award, the SA Artist Foundation Award, and the NALAC Fund for the Arts Grant.

Erica Rudolph

Graphic & Web Designer

Erica Rudolph is a largely self-taught powerhouse of design talent from Boerne, Texas. She brings her skills in web design, graphic design, and UX/UI to the DS Media Team.

When she’s not working tirelessly to deliver projects to clients, Erica enjoys escaping the city a few times a month to visit family and see all the animals at the family ranch in Center Point. Erica is colorful and bold just like the design work she delivers to clients. From her love of the outdoors to her impressive vintage camera collection, Erica finds inspiration for her inspired design from the organic to the macabre.

Her love of dark humor, crime shows and the psychological tales of serial killers will ensure that you’ll find her curled up on her couch with her ball python Poe and pup Ruger on a Saturday night watching American Horror Story or Criminal Minds while snacking on her family’s homemade venison jerky.