Sean Callahan

CTO at Blisser

Sean cares deeply about the environment, nature and having a green earth for the next generation. As an experienced product-focused technical leader, wielding 16 years’ experience, and exhibits an exceptional track record: delivering significant stakeholder value in start-ups and established medium and large companies including Cameo, OppFi and AT&T. Inventively helping startups scale from half a million users to almost 30 million. Possesses a B.S. in Computer Science from the Illinois Institute of Technology, in Chicago, IL.


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