We are a small software development and consulting company that focuses on Hydra, Blacklight, Fedora and related technologies. We’re passionate about working with open source software and building robust digital repositories to support the needs of a wide variety of cultural heritage and research institutions. If your interested in joining our team, please see our jobs page.



Mark Bussey, Chief Information Leafblower / Managing Director 

Mark_250x300Mark has over two decades of infrastructure management, system architecture, and development, and deployment experience across a wide variety of technology platforms.  Most recently, he lead the BBYOpen development team supporting Best Buy’s e-commerce platform.  Mark holds a Bachelor of Arts degree in English and Mathematics from Amherst College and has recently earned a Master of Arts degree in Music Education from the University of St. Thomas.  When not dabbling in technology, Mark is an avid classical guitarist and is board member and current president of the Minnesota Guitar Society.

Alicia Cozine, Dev Ops Lead

Alicia_250x300Alicia has more than a decade of experience in the software industry, including systems administration, testing, marketing, project management, documentation, and database administration. She holds a BA from Columbia College in New York and a PhD. in European History from the University of Chicago. In the short midwestern summers, Alicia enjoys competing in dressage with her Percheron/Quarter Horse cross, Shade. She has served as President of the Central States Dressage and Eventing Association and sits on the board of the Downtown Minneapolis Transportation Management Organization (TMO).

Shanita John, Project Manager

Shanita_250x300Shanita joins the DCE team with 9 years of experience as a Senior Project Manager and Director of Operations within the fields of interactive design and advertising. A graduate of the Minneapolis College of Art and Design, Shanita’s career experience began with–and has fittingly returned to–the world of technology start-ups. Although she counts it a privilege to have worked at agencies of 300+ employees, her preference has always been to work with smaller, more close-knit teams, because of their agile nature. A self-proclaimed ambivert, 90’s music aficionado and snack enthusiast, Shanita is delighted to bring her unique perspective and expertise to the DCE team.

Tom Johnson, Sr. Developer

Tom JohnsonTom is a librarian and developer with rich experience in scholarly communications and special collections. In his previous role he served as Metadata & Platform Architect at the Digital Public Library of America, where he worked on metadata aggregation at a national scale. As a long time contributor to the Hydra project, he has contributed to the adoption of RDF in the community and serves as a core member of the Ruby RDF team. In addition to his work with DCE, Tom is a Ph.D. student at the University of Washington iSchool where his work focuses on digital libraries and metadata interoperability.

Rachel Lynn, Business Manager


Rachel joined the DCE team in 2014 after managing operations for a software startup for 5 years. She handles day-to-day business logistics, ensuring efficiency of operations and procedures. Rachel also plays a key role in coordinating DCE’s Hydra Camps and conferences. She holds a BA in Communications from the University of Minnesota and honed her organizational and problem solving skills while working in the Feature Film and Advertising industries. In her spare time, Rachel enjoys hiking, biking, camping, cross-country skiing and kicking back with her family and friends.

Valerie Maher, Sr. Developer

Val_250x300Valerie is an experienced software engineer with a background in several different fields, such as development for the web, desktop, APIs, tools, and embedded systems.  She enjoys working on open source software as a way to contribute back to a community that has so generously shared its knowledge.  Her hobbies include cooking, gardening, studying Japanese, birdwatching, and reading children’s books.


Founding Member Matt Zumwalt is one of the world’s leading experts on Digital Repositories.  He founded MediaShelf in 2006, and is the original engineer behind ActiveFedora and the Hydra Framework.  Since 2007, he has contributed to software projects at many of the world’s top libraries and archives, and has given presentations and workshops across North America & Europe.  From an early age, Matt has consistently dedicated his passion and skills to building and nourishing creative communities.  While Matt remains involved in the Hydra community, he is currently focusing his curatorial insights on other projects.

Justin Coyne is a 15 year veteran web developer.  He joined Media Shelf in 2011 and continued on with the transition to Data Curation Experts.  Justin has been an active committer on Hydra, ActiveFedora and Blacklight and continues to contribute in his new role on the HyBox team at Stanford.  Justin is a proponent of agile methodologies and is in favor of any method that encourages teams to work smarter.  Justin received his Masters degree in Software Engineering from the University of Minnesota in 2006.  Recently, Justin has been exploring non-relational data stores and javascript frameworks.