Management

Senior Management

  • Mihael Mikek
    Founder &
    Chief Executive Officer
    Mihael Mikek
    Mihael Mikek
    Founder &
    Chief Executive Officer
    Mihael sets the vision and strategy at Celtra, where he has overall responsibility for establishing Celtra as the leader in cross-screen HTML5 technology for brand advertising. He incubated Celtra at Babson and led the company to become the preferred technology vendor for the mobile advertising ecosystem. Under his leadership the company won several industry awards, including several American Business Awards and a MassTLC award.
  • Matevz Klanjsek
    Co-founder &
    Chief Product Officer
    Matevz Klanjsek
    Matevz Klanjsek
    Co-founder &
    Chief Product Officer
    Matevz sets the overall product strategy and is responsible for product design and development. With 15 years of digital advertising experience, he spearheads Celtra’s product innovation, having conceived and introduced to the market innovative new ad products, such as Smart Video Ad Formats and a new generation of ad formats for Angry Birds.
  • Maja Mikek
    Co-founder &
    Chief Finance Officer
    Maja Mikek
    Maja Mikek
    Co-founder &
    Chief Finance Officer
    Maja is responsible for Celtra’s Finance operations which she built from the ground up, helping to scale the business to its current success. She is a master of planning and managing companies' financial resources while balancing bold investments with profitable end year results. Prior to Celtra, she headed marketing at Electroncek group, the world’s leading manufacturer of electromechanical gaming devices. She graduated with honors with an MBA degree from Babson College, where she co-founded Celtra Inc.
  • Jonathan Milne
    Chief Revenue Officer
    Jonathan Milne
    Jonathan Milne
    Chief Revenue Officer
    Jonathan leads Celtra's global Sales & Services organization. Prior to taking on this role, he was responsible for the company's business in EMEA & APAC, while actively supporting US operations. In his career, Jonathan has led a number of technology companies - including NetGenesis, Maven Networks and Ooyala - in successfully entering the European market.
  • Jaka Jancar
    Chief Technology Officer
    Jaka Jancar
    Jaka Jancar
    Chief Technology Officer
    Jaka is responsible for architecting Celtra’s AdCreator, the first cross-screen HTML5 technology for brand advertising. He has deep experience in building innovative new products, large-scale systems and reliable cloud-based SaaS technology platforms.
  • Gregor Smrekar
    Chief Operating Officer
    Gregor Smrekar
    Gregor Smrekar
    Chief Operating Officer
    Gregor is leading the execution of Celtra’s strategic initiatives and ensuring the balance between day-to-day business priorities and strategic new business priorities across all departments. He has 25+ years of experience in engineering and business management. After joining Celtra in 2013, he was building and scaling the engineering team, which is still his base. Prior to joining Celtra, he led ComTrade’s International Business Unit, a large product R&D team, developing products for top hi-tech vendors. Prior to that, he was the COO of HERMES SoftLab, one of the largest engineering service companies in the Adriatic region.
  • Ales Gabrovec
    EVP STRATEGIC BUSINESS DEVELOPMENT
    Ales Gabrovec
    Ales Gabrovec
    EVP STRATEGIC BUSINESS DEVELOPMENT
    Ales helps define product strategy and user experience design on Celtra’s key products. He has over 10 years of experience in digital marketing, advertising and digital product design for both creative agencies and technology companies. Previously having co-founded two start-ups where he was responsible for product management, he has a big passion for bringing new and innovative products to life. He holds a Masters degree from New York University's Interactive Telecommunications Program.
  • Gefen Lamdan
    SVP, Product
    Gefen Lamdan
    Gefen Lamdan
    SVP, Product
    Gefen oversees publisher and technology partner integrations and rich media ad formats at Celtra. She has over 12 years of experience in creating digital ad products that engage and delight consumers. Prior to Celtra, she was responsible for Mediamind’s mobile and emerging products strategy.
  • Jack Hallahan
    SVP, Brand & Agency Partnerships
    Jack Hallahan
    Jack Hallahan
    SVP, Brand & Agency Partnerships
    Jack is responsible for media partners sales and brings to Celtra a wealth of industry expertise from years working with brand owners, publishers, and agencies alike. He joins from Mojiva where he served as VP of Mobile Innovations.
  • Patrick Candela
    VP, Media Partnerships, East
    Patrick Candela
    Patrick Candela
    VP, Media Partnerships, East
    Patrick Candela oversees the media partner east sales team responsible for driving platform adoption. Previously, Patrick successfully grew Celtra's premium publisher business in New York. He provides expertise in ad technology and brand advertising deriving from his previous roles at Google, Admeld & Time Inc.
  • Harry Robinson
    VP, Brand & Agency Partnerships, East
    Harry Robinson
    Harry Robinson
    VP, Brand & Agency Partnerships, East
    Harry is responsible for Celtra’s Brand and Agency Partnerships in the US. Having recently lead our Product Marketing team Harry has a passion for Celtra and helping clients get the most from AdCreator. Prior to this he launched and successfully grew Celtra’s agency business in Europe. He holds an MSc in Information Management from the University of Sheffield in the UK.
  • Cristy Ebert
    VP, Marketing
    Cristy Ebert
    Cristy Ebert
    VP, Marketing
    Cristy is responsible for the Marketing team’s day to day operations. She has 10+ years of B2B digital marketing experience, specializing in content, demand generation, strategy and measurement. Prior to joining Celtra, Cristy held leadership positions at Rakuten Marketing and other ad tech and technology firms. She earned her Bachelor’s degree in Advertising and Creative Writing at the University of Miami and her MA in Advertising at the University of Texas at Austin.
  • Rodney Alvarez
    VP, Talent Management
    Rodney Alvarez
    Rodney Alvarez
    VP, Talent Management
    Rodney leads the development and execution of our talent management initiatives. Rodney has over 15 years’ experience in talent management mostly working in technology companies. He holds a Ph.D. from the University of California, Los Angeles and has held senior HR roles at FAST (now Microsoft), British Petroleum, Attivio and Celtra. His areas of expertise include recruitment, employee recognition, compensation and performance management.
  • Dekyi Lhaze
    VP, Controller
    Dekyi Lhaze
    Dekyi Lhaze
    VP, Controller
    Dekyi oversees the Accounting department and is responsible for Celtra’s financial policies, procedures, controls and reporting system. Prior to Celtra, she was the Controller at Visible Measures, Accounting Manager at Basis Technology and held a Senior Operations Analyst position at Bank of America. Dekyi graduated with honors with an MBA degree from Boston University.

Board of Directors

  • Mihael Mikek
    Celtra
  • Sarah Fay
    Free Agent
  • Joe Medved
    SoftBank Capital
  • Tim Wright
    GrandBanks Capital
  • Rudina Seseri
    Fairhaven Capital

Advisory Board

  • Clark Kokich
  • Paul Gunning
  • Mike Kelly
  • Gokul Rajaram
  • Marc Theermann
  • Ivan Mitrović
  • Alan Osetek
  • John Nitti