Stefan Kaczmarek Email & Phone Number

Phoenix, Az, Us

New York, New York, Us

Start-up software company focused on streaming media mobile application development.Designed and developed mobile applications for iOS, Android, and Windows Phone.Developed iCam, a mobile application that enables users to remotely monitor multiple live video and audio webcam feeds from a mobile device. iCam has been featured on CNN, Good Morning America, The Today Show, and was chosen by Apple to be featured in the “Dog Lover” iPhone 3GS television commercial.Developed iSpy Cameras, a mobile application that enables users to view and control thousands of public video cameras from around the world in real-time from their mobile device. iSpy Cameras held the #1 Paid iPhone App ranking in a number of countries around the world including the UK, Ireland, Italy, Sweden, and South Korea.Developed desktop applications for Windows and Mac OS X as well as the company website.

Start-up software company focused on mobile and web application development and consulting.Designed and developed educational and fitness mobile applications for iOS and Android.Designed and developed fileai.com, a private, secure, peer-to-peer file transfer web application that utilized a proprietary UDP-based firewall-piercing NAT traversal communication protocol.

Phoenix, Arizona, Us

Scottsdale, Arizona, Us

Phoenix, Arizona, Us

Led the iOS architecture, design, and development efforts for various mobile payment solutions that support Manual Entry, Magnetic Stripe, EMV Chip Card, and Contactless transactions.Developed a Mobile Payment SDK to give integrating applications the ability to accept mobile payments using various third-party Magstripe, Chip, and Contactless card readers.Developed the AprivaPay Plus EMV-certified mobile payment application for iPhone and iPad, in addition to developing mobile payment applications for Global Payments, First Data, iPayment, Wells Fargo, Bank of America, and Valley National Bank.Developed a third-party Bluetooth card reader interface library, in addition to integrating other third-party card reader libraries into Apriva's various mobile payment solutions.

Built and managed the team of in-house iOS & Android software engineers and architects, project managers, business analysts, UI/UX designers, front-end web developers, and graphic artists to design and develop mobile applications and responsive websites.Met with prospective clients, analyzed their business requirements, and maintained constant communication with them throughout the design and development process.Interfaced with contracted outsourcing companies and conducted weekly status meetings with nearshore software development teams.Led all mobile application design strictly adhering to Apple's Human Interface Guidelines (HIG) and Google's Material Design standards.Instituted the Agile Scrum software development methodology for all development projects.Developed company-wide technology standards and practices.

Scottsdale, Arizona, Us

Architected and developed the multifamily Relationship Management mobile application utilizing RESTful Web Services, SIP internet telephony, remote notifications, and local data storage for the iOS and Android platforms.Participated in the Agile Scrum software development process including daily stand-ups, two-week sprints, and the sprint planning, review, and retrospective meetings.

Developed a social networking / e-commerce website focused on surfing and surf photography.Developed EppicSurf.com, a surf photography social networking website that allowed amateur surfers to view and purchase surf photographs of themselves taken by professional photographers.

Leading online anti-piracy company that provided services to prevent copyright infringement on peer-to-peer file sharing networks. MediaDefender was acquired by ARTISTdirect for $42.5M in cash in July 2005.Designed and developed large-scale anti-piracy software systems to assess and prevent the unauthorized distribution of music, movies, and software on various peer-to-peer file-sharing networks.Reverse-engineered peer-to-peer file sharing network protocols and encryption algorithms.

Start-up software company focused on peer-to-peer networking.Designed and developed a private, secure, peer-to-peer networking application that supported file transfer, instant messaging, chat, remote desktop, and video conferencing.

Arlington, Va, Us

Technology and innovation leader specializing in defense, security and civil markets throughout the world.Developed and integrated software for the proprietary pipelined digital signal processing component of the F-15 APG-63(V)1 fire control radar.