Justin Hersh, Chief Executive Officer

 As founder and CEO of Group Delphi, Justin’s mission is connection. His craft is creating unforgettable experiences that evoke wonder and awe, inspiring people to step out of their comfort zones and take part in something more. To that end, Justin is committed to assembling the most talented team of creative professionals in the industry. Group Delphi is a collection of visionaries who share Justin’s passion for wildly creative solutions to our clients’ needs. Our 200-plus storytellers, artisans, and technologists strive to continuously redefine what interactive exhibits can achieve.

At the heart of our work at Group Delphi is Justin’s rich background in theater. From large-scale events, trade shows, branded retail spaces, and museum installations, we approach every project with the passion of performance and the commitment that “the show must go on” — no matter what. Justin has nearly 30 years experience collaborating with the world’s best brands and museums, including VMware, Pixar, Eaton Trucking, George Coates Performance Works, the Denver Museum of Nature and Science, Seattle’s Space Needle, and many more.


Jerry Grieser, Director, Museum Business Development

 Though educated in product design and automotive styling, the exhibit industry’s diverse challenges led Jerry to make a varied career as an exhibit designer and project manager, design consultant, account executive, business development director and sales leader. Jerry has worked with some of the leading museum and experiential companies in the world including Design Craftsmen, H.B Stubbs, and George P. Johnson. He prides himself on great relationships with many of the world’s leading independent museum exhibit design firms. Jerry is passionate about museum exhibits for their offering of engaging content, a leading edge fusion of creative and technical production disciplines, opportunities to work with brilliant experts and notable personalities, and the immense personal gratification in helping to produce educational and inspirational experiences. 

Notable Projects:

  • Chicago Museum of Science and Industry: U-505 Submarine New Exhibits
  • National Park Service: Grand Canyon and Grand Teton Visitor Centers
  • The Ronald Reagan Presidential Library and Museum: Air Force One Exibits
  • The International Spy Museum
  • J. Paul Getty Trust: Getty Villa Exhibits
  • Children’s Science Education Center, Egypt
  • Western Science Center
  • Space Needle: “Elevate” New Entrance Exhibits

David Salinger, Senior Account Director

David has been with Delphi since 1997. He has 30 years of diverse industry experience managing exhibit design teams and projects with complex fabrication needs, although his expertise is in developing science centers and museums. In fact, he worked exclusively on the highly awarded Space Odyssey exhibit at the Denver Museum of Nature & Science, which still stands in excellent condition after 10 years. His unwavering devotion to quality carries over to his second passion – cooking.

Notable Projects:

  • Oakland Museum of California: Gold Fever!
  • Bishop Museum: Hawaiian and Polynesian Halls
  • Perot Museum of Nature and Science
  • Pacific Science Center

Matt Short, Museum Account Executive

Matt Short’s rich academic background includes a B.A. in History from Albion College and an M.A. in Chinese Studies from the University of Michigan, where he also earned a Graduate Certificate of Museum Practice that set a precedent for his career path. After 20 years in museum leadership, Matt brought his expertise in history and automobiles to Delphi. He currently serves as our Museum Account Executive, where he leads client communication and the overall organization of his projects. Matt is a Trustee of the National Association of Automobile Museums and The Society of Automotive Historians. He has completed many noted projects in this field.

Notable Projects:

  • Lincoln Motor Car Heritage Museum
  • Auburn Cord Duesenberg Automobile Museum: Gordon Buehrig Gallery of Design and Gallery of Engines and Technology
  • The Donald C. Cook Nuclear Energy Information Center

Steve Todisco, Director of Museum & Tradeshow Operations

A graduate from Rhode Island School of Design with a degree in industrial design, Steve has over 20 years of experience with Group Delphi in all the main areas of design, operations management, project management, estimating, and fabrication. His extensive background in management and fabrication coupled with a blend of artistic and practical hands on experience, gives Steve an innovative approach to problem solving that upholds the client’s story and vision while monitoring budgets and project schedules. Steve plays a strategic role as senior level management of all museum projects and is key in providing internal operational oversight, leadership and support for ongoing and active projects.

Notable Projects:

  • Chabot Space and Science Center: Dragon Skies
  • Columbia Memorial Space Center
  • Bishop Museum:Hawaiian Hall & Polynesian Hall
  • Bay Area Discovery Museum
  • Space Needle: “Elevate” New Entrance Exhibits

Ray Davis, Senior Project Manager

After studying biology, art, and museum studies at Central Michigan University, Ray went on to earn a LEED AP certification. As senior museum project manager at Group Delphi, Ray specializes in cultural and natural history museums and seamlessly manages design development, engineering, fabrication, installation, budgets, and schedules. His love of planning is also a personal passion – Ray often completes home renovations and designs for friends and family in his spare time.

Notable Projects:

  • Naismith Memorial Basketball Hall of Fame
  • Kentucky Science Center: The World We Created
  • Placerita Canyon Nature Center
  • Guam Museum of Culture
Bricker Mike

Mike Bricker, Senior Project Manager

 Mike began his career with Delphi (ICON Exhibits) in 1986, leading a team of exhibit specialists on projects demanding master craftsmanship and attention to detail. Over the years, Mike has perfected estimating, detailing, operations management, and project management. Though his area of expertise is automotive – his favorite endeavor was building a gallery for the Auburn Cord Duesenberg Automobile Museum.

Notable Projects:

  • Auburn Cord Duesenberg Automobile Museum: Gordon Buehrig Gallery of Design, Cars of Indiana Gallery, and Dean V. Kruse Gallery
  • Andy Granatelli Hall of Fame Museum
  • The Donald C. Cook Nuclear Energy Information Center
Eric Osbourne Group Delphi museum team

Eric Osborne, Senior Project Manager

Eric brings to Group Delphi more than 20 years management level problem solving experience with design development, budget management, scheduling, identifying materials and methods appropriate to specific projects, fabrication and installation. Eric received his BFA from University of Kansas and quickly began his exhibit fabrication career as a sculptor, mold maker, and fiberglass specialist back in his hometown of Chicago. In 2000 Eric and two fellow artists opened their own independent exhibit fabrication studio, Artists Incorporated, serving exhibit and scenic companies across the U.S. He has an in-depth level of industry knowledge, effective management techniques both in-shop and on site and strong communication skills. Eric executes every job with a high level of professionalism ensuring client, designer and subcontractor needs are met with accuracy, on-budget and within set timeframes.

Notable Projects:

  • Shedd Aquarium
  • Museum of Science and Industry
  • Adler Planetarium
  • Louisiana Art & Science Museum
  • Kenosha Public Museum
  • Missouri History Museum
  • Lincoln Park Zoo, Chicago
  • America Cruise Lines
  • Luxor Casino
  • Baxter Laboratories Museum of California
Rob Oakley Project Manager Group Delphi museum

Rob Oakley, Project Manager

Robert Oakley brings over 40 years’ experience in technical directing and project management to client projects. Rob got his start in theater, received his degree in scenic design and technical theater. Upon graduation, Rob worked on Broadway, incorporating technical considerations into stage design while producing and bringing stories to life for audiences from around the world. From there he went on to work in architectural decoration, event production, exhibition, film, television, theater, and finally, the museum industry.


Notable Projects:

  • National Parks Service
  • USA Bicentennial (event), the Kingdom of Saudi Arabia, “Saudi Arabia yesterday and today,” cultural exchange exhibition, 18-city tour
  • Children’s Museum of Sonoma County
  • Madame Tussaud’s Wax Museum
  • Lyman Museum Island Heritage Gallery
  • Culinary Arts Institute’s “Chuck Williams Collection”

Timothy Walden, Director, AV Systems Group

 Tim Walden is a veteran technology professional. During his career he served as project manager of leading‐edge entertainment venues designed by visual effects pioneer Doug Trumbull. He was also director of the Sonics/IMAX special venue projects group ‐ designing, building and installing audio, video, control and simulation systems for theme park attractions, museums and other specialty applications. Tim joined Group Delphi in 2008 as Technical Director for museums, trade shows and special venue projects.

Notable Projects:

  • Perot Museum of Nature and Science
  • Pacific Science Center
  • Bishop Museum
  • Denver Museum of Nature and Science
Reichmuth, Hugo2

Hugo Reichmuth, Senior Detailer

As Delphi’s senior detailer, Hugo is part of a skilled team of draftsmen-engineers responsible for the functional hand and digital drawings that our craftsmen use to build exhibits, environments, and structures. He’s a qualified designer, architect, contractor, builder, and project manager for complex exhibition and residential projects. He’s been involved with nearly all projects produced at Delphi over the past 13 years.

Notable Projects:

  • Denver Museum of Nature and Science
  • Huntington Beach Wetlands Conservatory
  • Yosemite Visitor Center
  • Oakland Museum of California

Jon Altemus, Scenic Exhibits Manager

With a BFA in painting from the Academy of Art Institute and an MFA from the San Francisco Art Institute, Jon brings over 20 years of industry experience and a long history of directing fabrication teams for museum exhibits, with a specialty in natural history. One of his favorite projects was for the Perot Museum of Nature and Science because it allowed him to express his interest in wildlife. He volunteers for the Golden Gate Raptor Observatory, where he’s been a site leader for seven years. He also teaches birding classes and leads summer walks to identify his fine-feathered friends.

Notable Projects:

  • Randall Museum
  • Oakland Museum of California
  • Aquarium of the Bay
  • Yosemite Valley Visitor Center