John De Guzman Email & Phone Number

Toronto, On, Ca

Toronto, Ontario, Ca

- Established and managed cross-functional teams and groups dedicated to building multiple SDKs that encapsulate existing feature sets from our apps. These SDKs empower external customers to seamlessly integrate and leverage these capabilities, resulting in the expansion of our market reach and revenue potential.- Implemented E2E testing framework for teams to use in order to ensure the robustness and reliability of our mobile applications.- Introduced observability into our applications using Sentry, enabling real-time error tracking, performance monitoring, and proactive issue resolution.- Led the implementation of identity-specific modules, such as Auth0, to enhance authentication and authorization processes for our mobile applications- Collaborated closely with the senior leadership team including senior product managers to provide technical insights, prioritize feature development and creating roadmaps to align engineering efforts with company goals and strategies.- Successfully led and mentored a diverse team of multiple engineers, ranging from Staff to Junior levels, fostering an environment of collaboration and continuous learning.- Conducted regular code reviews, provided constructive feedback, and mentored team members to foster a culture of technical excellence.

Toronto, Ontario, Ca

Toronto, Ontario, Ca

- Lead a dynamic platform team comprising Android and iOS developers tasked with creating native bridges for React Native applications.- Spearheaded the rework of mobile interfaces within React Native apps, implementing scalable solutions to optimize the performance of native mobile builds.- Led the consolidation of multiple applications into a single, cohesive solution, streamlining processes and improving overall user experience.- Collaborated closely with product managers, designers, and other stakeholders to align development efforts with project goals and timelines.

Vaughan, On, Ca

Created two mobile apps: one that takes in survey inputs used in conventions and another mobile app that tracks usage of cannabis in patients. Used many web services for backend syncing and as well as Realm as a mobile database. Planned out the schema for the backend model and the response of the api services. Prototyped all the mobile apps using Sketch and Proto.io for fast customer testing. Created each app through a mix of storyboard, xibs and code using a component-driven approach. Built the framework to get the apps shipped fast and efficiently to both internal shareholders and to patients.

Part of a team that developed a banking app for a big client. Worked on making existing frameworks better with rigorous testing and added documentation for the whole company to use throughout multiple applications. Mentored junior developers through code reviews and pair programming that helped them have consistent design patterns throughout the app. Worked with multiple designers and product managers to make sure shipping the mobile app was efficient and successful.

Lead the tea​m in all mobile fronts, from design to development and all the way to deployment. Developed the app’s architecture through implementations of different frameworks while focusing on high unit test coverage and component driven development. Worked with our web designers in order to help them level up in mobile UI & UX design. Dealt with third party vendors on integrating frameworks for feature flagging, continuous integration and analytics.

Toronto, Ontario, Ca

PopRx is a platform that connects patients to their own Personal On-demand Pharmacist. Your personal pharmacist, can manage your medications, arrange same-day delivery of medications, answer questions, and schedule other in-office services like vaccinations. In PopRx, I lead the team of offsite iOS developers in maintaining the app and migrating the code base from Objective C to Swift. Designed and integrated a more e-commerce friendly UX in part to boost sales on different categories of products. Created the structure to seamlessly deploy the app through Fastlane. Prototyped the new version of the app through Sketch and Proto.io with thorough understanding of the business logic and goals. Rolled out Testflight for beta testers for both internal and external testing. Worked extensively with backend developers in creating RESTful APIs to be consumed by the application. Used many third party libraries and APIs like Google SDK and Facebook SDK. Integrated analytics like crash analytics through Fabric.io and MixPanel to better understand user behaviour. Worked directly with CTO to map out feature releases and sprint planning for different projects.

Toronto, Ontario, Ca

Developed the app and upgraded the app from hybrid to a fully native app. Created mobile app mockups and gain feedback from creative Director, CTO and CMO for best ways of implementations. Worked with third party design firm and give feedback for better UX for the native app. Worked with a team of backend and front end developers to create the APIs needed for a scalable ecommerce app. Work with QA Analysts to create test cases for UI and UX. Guided quality analyst with different ways on testing the app through different mobile devices. Worked directly with CTO to create a roadmap to achieve business goals with app deployment. Coordinated with marketing to best use push notifications to re-acquire old customers. Tracked user behaviour, crashes and downloads using Google Analytics, Fabric and iTunes Analytics. Analyzed app store listing rankings and optimized App Store listing by using App Annie.

• Created prototypes for UX Design through InVision and Proto.io• Developed the mobile application in both Android (Java) and iOS ( Swift). • Lead the team from concept creation all the way to app store deployment in both Google Play Store and the App Store. • Tested the applications through device simulators and services like UserTesting and Appurify. • Created a secure API based on Django RESTful Framework.• Generated leads and partnered with different indie artists in Toronto.

Boulder, Colorado, Us

• Supervised a team of web programmers and developers in designing and implementing websites that fulfilled the client’s provision. • Trained newcomers in software languages that enabled them to create their own websites. • Responsible for server security and database management.