Jun Y.

Staff iOS App Developer at Vivint Smart Home, passionate about changing the world

Greater Boston

About

Experienced Developer with a history of working in the mobile application development. Skilled in iOS Development, Business Planning, Java, HTML, Android Development and Financial Analysis. Strong engineering professional with a Master’s Degree in Computer Science from Dartmouth College and a Master's Degree in Finance from Clark University.

Experience

  • Vivint (Full-time · 7 yrs 4 mos)
    • Staff iOS Engineer
      Apr 2022 - Present · 4 yrs 4 mos

    • Senior iOS Engineer
      Apr 2019 - Mar 2022 · 3 yrs

      Contributed to the development of Vivint Smart Home iOS app to manage IoT devices and the smart home ecosystem. Co-Designed and developed low level framework and libraries, including utilities, SDKs, and common UI components. Adopted and implemented Dependency Injection pattern. Practiced single-responsibility principle. Mentored junior engineers through architecture design and pair programmings. Improved app accessibility and inclusivity. Enhanced app test coverage. Collaborated with multiple cross-functional teams and verticals on app information architecture, design language initiatives, legacy code refactoring, etc. Guild master: facilitated iOS guild meetings, promoted good coding practices and socialized new ideas. Proposed and refined the process of documenting and reducing tech debt in a sustainable fashion. Participated in talent acquisition. Refined coding challenges and interview process.

  • iOS Engineer at Aetna, a CVS Health Company
    Jun 2017 - Mar 2019 · 1 yr 10 mos

    Contributed to the development of a health application in iOS, including building models and UI, consuming APIs, constructing unit tests and integration tests, implementing accessibility large fonts and voice over, submitting pull requests and conducting peer reviews. Worked with a cross-functional scrum team in a Lean-Agile fashion and collaborated with multiple Agile Release Trains (ARTs) consisting of design teams, backend teams and frontend teams. Participated in the biweekly sprint planning, quarterly Program Increment (PI) planning, and scrum of scrum meetings. Interviewed applicants and summer associates (including phone screenings and onsite tech interviews). Mentored the summer associate. Planned and facilitated a hackathon.

  • Lead iOS Engineer at QueryMall Inc
    Nov 2015 - Jun 2017 · 1 yr 8 mos

    Led the development and iteration of NextAve iOS application (in Swift 2 and Swift 3) from version 1.0.0 to 1.5.1, coordinated with developers and collaborated with UI/UX designers, and reported to CEO. Embedded Fabric and Crashlytics in the app, monitored app performance statistics and crash reports. Maintained NextAve app on Apple iTunes Connect, deployed TestFlight to internal and external testers and released the app on Apple AppStore. Maintained Github branches, coauthored Github documents and wiki, oversaw Github pull requests, conducted peer reviews, and resolved Github issues. Applied Trello project management tool, monitored project integrity and met deadlines. Visited merchandise owners and collected feedbacks. Participated in app iteration weekly meeting and marketing strategies planning.

  • Developer III / Mentor at DALI Lab
    Jan 2014 - Sep 2015 · 1 yr 9 mos

    Developed an iOS app (Objective C and Swift) for Student Life to study the correlations between academic performance and sleep pattern, social activities, and stress level. Developed an algorithm to overcome iOS background execution time limit to allow the app to access microphone, accelerometer, motion co-processor, Bluetooth and GPS periodically and unobtrusively. Studied the tradeoff between data sampling rate and energy economy of the Student Life Android app Developed a web application to visualize portfolio performance for HIP Investor Inc. (Developed in JavaScript and CSS with D3 library)