John Allen is a seasoned software engineer with extensive experience across several prominent companies. They worked as a Senior Software Engineer at Aldus Corporation, Lotus Development Ireland, and multiple other organizations from 1988 to 2013. John held leadership roles, including Head of Technology at Web Reservations International and Principal Software Engineer at Mastercard, where they are currently engaged. They have also contributed their expertise as a consultant, working with MasterCard Labs and other organizations along the way.
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