Vishwanath Kolkar

Led a team of 5 developers to design and deliver the Return & Recipient Addressing web app for the Envelopes product (NA region), including real-time preview on digital envelopes — resulting in $3M annual revenue uplift.

Architected and developed the Coupon Callout React component to dynamically display best-available discounts under product prices; drove alignment across 9 key pages on vistaprint.com through cross-team collaboration and stakeholder negotiation.

Architected and developed the Ratings & Review Distributed System that displays products ratings and review across vistaprint.com website.

Leveraged A/B testing and Statsig to evaluate user engagement with pricing callouts, driving data-informed decisions that improved conversion rates.

Extended backend NestJS pricing service to incorporate coupon logic and pricing rules, ensuring seamless integration with frontend systems and business logic.

Currently leading the development of a Product Collection web app aimed at increasing multi-product purchasing behavior, by showcasing curated products with shared designs — contributing to higher average order value.

Mentoring junior engineers, conducting code reviews, and contributing to system architecture discussions while ensuring timely, high-quality feature delivery in a fast-paced Agile environment.

Designed and developed the Product Details Page from the ground up for Cimpress eCommerce platforms, integrating product catalog data to enable seamless product customization.

Built a Generic Attribute Selector JavaScript bundle to streamline option selection across diverse product types, improving user experience and developer efficiency.

Engineered a custom Email Template Engine that enabled marketers to automate order confirmations and promotional campaigns, significantly reducing manual effort and increasing campaign agility.

Contributed to the Workbench internal tool, improving visibility and manageability of order workflows for operations and support teams.

Led the end-to-end development of the Envelopes Recommendation Page, driving a $2M revenue boost on vistaprint.com by enabling customers to select matching envelopes for their products.

Built Nano Studio, a lightweight design tool allowing customers to personalize envelopes pre-purchase, enhancing engagement and customer satisfaction.

Designed intuitive UI/UX strategies and translated user research and requirements into responsive, accessible web interfaces.

Applied the MVVM architecture pattern to structure Angular applications with reusable components, custom directives, and RxJS-based state management.

Prototyped multiple UI solutions and collaborated cross-functionally to implement and validate front-end features using Angular, TypeScript, and Node.js.

Participated in the full development lifecycle of WebOS modules, including analysis, design, coding, and testing.

Developed responsive UI features and CRUD functionalities using Enyo JS atop the WebOS platform.

Built and integrated Luna Service APIs using Node.js to enable seamless communication between WebOS applications and the system database (LevelDB).

Developed and maintained the LG Smart Watch Music Controller application, handling design, development, and deployment on the WebOS platform.

Built showcase applications to highlight new WebOS features to LG leadership and product stakeholders.

Acted as a key contributor in a Scrum team, debugging platform-level issues, researching new solutions, and rolling out feature enhancements using Enyo JS and Luna Services.

Contributed to the development, testing, and deployment of the Yahoo Messenger desktop application, ensuring stability and performance in a production environment.

Supported the code migration from C++ to Node.js, helping modernize the messaging platform and improve maintainability.

Built a horizontal deployment tool to proactively resolve recurring issues in Yahoo Mail and Messenger, streamlining operations and reducing pre-production errors.

Individually developed website and Android mobile app for a NSRCEL project at IIM Bengaluru

Worked to bring the idea to market using the front end technologies to solve the drinking water problem

Source code link: https://gitlab.com/visikolkar/android

Managing, designing, coding, unit testing, and deployment of the TMS application software to the production

Worked as Lead Angular developer in a team of 6 developers