Jayashree Nagarajan, Developer in Hayward, CA, United States
Jayashree is available for hire
Hire Jayashree

Jayashree Nagarajan

Verified Expert  in Engineering

Augmented Reality (AR) Developer

Hayward, CA, United States
Toptal Member Since
October 7, 2020

Jayashree is an Android engineer with over eight years of experience building elegant and performant mobile applications, platforms, and SDK tools in AR and spatial computing. She also enjoys building scalable full-stack applications and added features for apps such as Rally Plus which is used by millions of users. Her passion lies in providing the best user experience through beautiful and intuitive UI design. She hopes to impact as many projects as possible through the Toptal community,


RxJava, Dagger 2, KOIN, Retrofit, PAW, Kotlin
Augmented Reality (AR), Postman, C++, C#, Unity3D
Augmented Reality (AR), Java, C#, C++, Unity3D




Preferred Environment


The most amazing...

...technical workshop I presented was at Samsung Developer Conference. I also coached hundreds of CS graduates, helping them ace their technical interviews.

Work Experience

Senior Android Developer

2019 - 2019
  • Owned end to end feature design and implementation for the United Healthcare App.
  • Wrote end to end unit tests and automation tests using JUnit.
  • Employed modern Android architecture and Jetpack libraries written entirely in Kotlin.
  • Collaborated with off-shore teams for bug-fixes and QA testing.
Technologies: RxJava, Dagger 2, KOIN, Retrofit, PAW, Kotlin

Senior Mobile Developer

2018 - 2019
  • Architected the mobile SDK to enable building persistent and multiplayer content.
  • Migrated application-level Rest API and networking calls to native C++ for cross-platform support.
  • Implemented internal developer tools and CI Build Pipeline to streamline engineering efforts.
  • Served as the lead developer for the Spatial Checklist application in Unity and Android using the SDK.
Technologies: Augmented Reality (AR), Postman, C++, C#, Unity3D

Senior Mobile Developer

2015 - 2018
  • Built end to end AR applications to run on DAQRI Smart Helmet, leveraging device sensors such as depth, motion, thermal, and Bluetooth.
  • Collaborated with UX/UI designers in bringing intuitive and practical user-experience and user interaction.
  • Implemented C# APIs to expose underlying native callbacks to the external developers.
  • Designed and implemented UI menus, widgets, and inspectors customized towards industrial applications.
Technologies: Augmented Reality (AR), Java, C#, C++, Unity3D

Senior Unity Developer

2013 - 2015
Qualcomm Inc
  • Built complex, engaging AR applications in Unity3D and Android with Vuforia SDK.
  • Collaborated with computer vision and SDK engineers in architecting API design and advised developers on best practices with rich code samples and sample applications.
  • Improved Unity and Vuforia integration and overall product quality in collaboration with design and product teams.
Technologies: Java, C#, Unity3D

Game Developer

2012 - 2013
TicToc Games
  • Built the Quest System to work with the game narrative for Apptivity TM MonsterHigh TM.
  • Built a custom model-view-presenter that worked best under the constraints of the Unity framework.
  • Created custom level-editing tools for level designers to independently design game puzzles and quests.
Technologies: Game Development, C#, Xcode, Unity3D

Rally Plus Healthcare App

A healthcare app that lets you take your health on the go in one convenient mobile experience. Depending upon your employer benefits, you can take health surveys, join missions and challenges to build healthy habits, get rewarded with points for taking healthy actions, and much more. I worked on the end to end gift card redemption feature of this app that lets the user redeem their earned coins through gift card purchases.

The project was fully built on Kotlin and the latest Android architectural components.

I wrote unit tests, integration tests, and functional end to end tests for the feature.
2009 - 2011

Master's Degree in Computer Science

University of California Los Angeles - Los Angeles, California

2001 - 2005

Bachelor of Engineering Degree in Computer Science

Utkal University - India


PAW, Retrofit, RxJava


CircleCI, Postman, Xcode, Crashlytics


Unity3D, KOIN, Dagger 2


Java, C++, C#, Kotlin


MacOS, Firebase




Android Development, 3D Math, Computer Graphics, Game Development, Augmented Reality (AR), Algorithms, Networking, Operating Systems, Data Structures

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring