Overseek partnered with Positive Action (http://www.positiveaction.net/) to take their Social & Emotional Learning program (the leading Pre-K12 program in the US) online in response to the pandemic. Involved in the entire product development lifecycle, including the concept, design, architecture, development, mentoring, deployment, and maintenance of new and existing features.

Quantum Advertising is a leading provider of native advertising solutions for publishers, advertisers, and agencies, owning and operating a portfolio of disruptive digital advertising technologies. Part of a team of 11 developers working on a CMS (Content Management System) for publishers & advertisers, allowing them to serve ads. Helped grow the annual revenue from $3mil to $12mil within 2 years with several key projects, including integrating an old video advertising called VAST/VPAID, which had a huge untapped market. Acted as the sole developer on this project, utilizing Video.js for rendering as well as HTML, CSS, XML, JavaScript, and jQuery.Developed API for serving ads through AppNexus (third-party service) using PHP and XML, with AWS S3 buckets for cloud integration with AppNexus, and MySQL for database storage.Mentored several junior developers and was an internal champion for SOLID OO programming principles, including design patterns and clean code.