Mark Celsor - Freelance
Technical Director & Web Developer
Read My Story

My Story

Scroll for highlights of my career.

  • Playing with My First Mac in College

    1994 - University of Cincinnati

    In college for art history I got my first computer. I started spending my nights playing with Photoshop and building Java applets. I was quickly hooked.

  • Web Designer and Developer at a Dial-up Internet Provider

    1996 - OneNet Communications

    Starting in tech support trenches as the "Mac guy", I moved into their web department designing and developing sites for clients including Cinergy (Duke Energy). These projects and freelance work exposed me to HTML, Perl, and the fundamentals of web design. My first freelance project was building a website for a friend's father's industrial equipment company in 1996.

  • Lead Developer at Two Cincinnati Agencies

    1998 - Metaphor Studio and eCustody

    Clients ranged from the National Underground Railroad Freedom Center to the business author Tom Peters. This variety of projects allowed me to learn Java, Visual Basic, Javascript, and Flash.

  • Web Manager at a Print Ad Agency in San Francisco

    2002 - Gumas Advertising

    This gave me experience building a team and digital practice inside of a traditional print advertising agency. I standardized us on PHP and we did work for sports clients like Yonex and the San Francisco Giants.

  • Senior Technologist at an Innovation Agency in Berkeley

    2005 - Clear Ink

    As the agency grew from 12 to 60 employees, we worked for high profile clients like Autodesk, Sun, HP, John Muir Health, and UC Berkeley. I worked for the author of the first book on PHP to develop an early PHP framework and many other technologies.

  • Founder and CEO of a Development Agency in Cincinnati

    2008 - Vine Street Interactive

    After my first daughter was born, I decided it was time to move back to Cincinnati to be close to family and to start my own web development business. It started out as part time freelance work from home and grew into an office space in Cincinnati’s historic Over-the-Rhine neighborhood with four full time developers and numerous contractors. Fortunately I was able to maintain many of the connections I had from San Francisco and had opportunities to work on projects for major brands like Adobe, AT&T, Autodesk, Cisco, Clorox, Fleishman-Hillard, Philips, Sandisk, UCSF's Center for AIDS Prevention Studies, and Visa. This role gave me the opportunity to expand well beyond technology to all aspects running an agency. I also had exposure to new technologies going deeper into content management systems and mobile development, including the development of Clorox’s first, award winning, iPhone app called myStain.

  • Software Architect at a USA / India Technology Firm

    2013 - CoStrategix

    I had the opportunity to work with a team of a dozen people in Cincinnati and over 100 in Bangalore India to develop software for mid-sized companies. The role taught me a lot about software development best practices, Agile project management, and working with offshore teams.

  • Director of Technology at a National Agency

    2014 - Rockfish (WPP)

    I joined a 280 person agency to start an open source practice but moved on to lead a large technical team of developers, QA, business analysts, and technical project managers. My client portfolio included a diverse set of Fortune 500 companies.

  • Technical Consultant for an International Ecology Program

    2016 - Miami University

    After 20 years, I have stepped back from full-time agency work to join the biology department at Miami University and work on software for Project Dragonfly. It is an international ecology research and education program that includes zoo exhibits, publications, PBS shows, master's degree programs, and field studies in places as far flung as Mongolia and Galápagos. This role gives me the opportunity to return to hands-on development for a cause I am passionate about and more flexibility to pursue personal and freelance projects.

  • Hire Me

Hire Me

for projects and retainer engagements.

Technical Leadership

  • Local and remote technical team managment
  • Requirements definition, estimation, and scheduling
  • Technical architecture planning

Project Management

  • Agile and waterfall project managment
  • QA/UAT testing and deployment coordination
  • Ongoing development and maintenance planning

Web Development

  • Web and mobile prototype development
  • High design front-end development
  • Sophisticated interactivity and animation
  • Back-end API development and integration

Cincinnati, Ohio, USA