Our Team

Building Incredible Products. It’s Who We Are.

Within 3 years Rangle has built a leading product and design firm specialized in using JavaScript to create mobile and web applications. Our team of 120+ team members in Toronto include some of the most talented AngularJS and React developers in the world. Coupled together with Lean UX product design, solutions consulting, continuous delivery and Agile best practices, Rangle’s team of experts ensures clients are successfully creating and deploying new technologies to lead their industries.

  • 120+
  • Team Members
  • 80+
  • Projects
  • 1
  • Location

Management Team

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Nick Van Weerdenburg


Nick is’s founder, first developer, and now leads the company’s business development and strategy activities. Nick first did server-side JavaScript in 1997 and has 15 years of experience in web software in diverse roles and industries. He is a firm believer in the thin-server, full-JavaScript stack and an active speaker, delivering about a dozen talks each year. To hear more from Nick, follow him on Twitter at @n1cholasv.

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Yuri Takhteyev


Yuri is’s second developer, a former faculty member at the University of Toronto, and a published author. He is an expert in front-end and test-driven development, server-side development, UX and design. Yuri holds a M.S. in Computer Science from Stanford University and a Ph.D. in Information Management and Systems from the University of California, Berkeley. To hear more from Yuri, follow him on Twitter at @qaramazov.

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Young Kim


As a seasoned financial veteran with over 20 years of experience in senior management roles, Young manages finance and accounting at Rangle. A graduate of the University of Toronto, he received his Chartered Accountant designation in 1993 and is an active member of the Chartered Professional Accountants of Canada.

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Rup Jolly


Rup is’s head of HR & Talent. He has over 10 years experience building and growing several award winning high growth technology companies. Rup thrives on the challenge of finding top talent to build world class teams.

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Amanda Connon-Unda


Handling sponsorships, PR and inbound marketing, Amanda drives initiatives through clear communication, analysis, and effective collaboration. In 2015 she and won Marketer of the Year in the small to mid-size enterprise category from the Canadian Association of Marketing Professionals and she was named a Top Woman in Direct Marketing.

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Mike Costanzo


Mike is’s UX/UI design lead. He has experience designing large campaigns for national and international programs and is well versed in product and campaign development. He’s no slouch at writing front-end code either. As a champion of User Experience he spoke about rapid interactive prototyping at Web Unleashed in Toronto and Lean UX at a number of tech events in the city.

Sales Directors

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Sean Stone

Regional Director
Western USA
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Alexey Smahtin

Regional Director
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Graydon Gough

Regional Director
Eastern USA