Balaji is available for hire
Hire BalajiBalaji Sunku
Verified Expert in Engineering
Android App Developer
Location
Bengaluru, Karnataka, India
Toptal Member Since
June 9, 2021
Balaji spent half of his 11 years career with MNCs and the other half with startups. He has extensive experience in making apps from scratch, understanding the existing system, and adding features on top of it. He's excited about learning stuff and crafting them together to make MVPs and scale them. Proven skills with native Android in Kotlin, architecture Components, REST APIs with Retrofit, Firebase, RxJava2, Coroutines, background, and foreground services (end to end application development)
Portfolio
Halodoc
Android SDK, Google Maps, Firebase, Kotlin, Clean Architecture, Coroutines...
Wicked Ride Adventure
Android SDK, Android Architecture Components, Firebase, Retrofit, Java...
Ola
Android SDK, Google Maps, Model View Presenter (MVP)...
Experience
Availability
Part-time
Preferred Environment
Android SDK, Retrofit, Android Architecture Components, RoomDB, Java, Dagger 2, Hilt, Clean Architecture, Firebase Cloud Messaging (FCM), Pagination
The most amazing...
...things I've made are bike rental app Bounce and Shuttle Driver for bus booking from scratch, led a team of 3-7 people, and scaled Bounce to 1,000,000 users.
Work Experience
Software Development Engineer III
2020 - PRESENT
Halodoc
- Developed the insurance linking feature for the health care product and made the benefits available to redeem on multiple services provided by the service.
- Understood the existing system with high-level knowledge transfer and able to extend the functionalities on time.
- Collaborated with several teams, including design, product, and tech to resolve dependencies and achieved the app deployments as per the committed deadlines.
Technologies: Android SDK, Google Maps, Firebase, Kotlin, Clean Architecture, Coroutines, Android Architecture Components
Lead Android Engineer
2019 - 2020
Wicked Ride Adventure
- Developed a keyless bike rental service app from scratch by accommodating other business types provided by the company, such as carpool, auto, and keyed bike service. Led a team of three to seven people and the app used by a million daily active users.
- Followed up actively to identify and fix the product issues and crashes by Crashlytics and Firebase performance monitoring. Achieved 99.5% crash-free user rate in four weeks.
- Spent less than eight weeks launching the app on the beta channel and achieved the stable product in another four weeks.
Technologies: Android SDK, Android Architecture Components, Firebase, Retrofit, Java, Clean Architecture
Software Development Engineer II
2015 - 2019
Ola
- Increased the usage of the app from less than 5% to 98% of the users by handling the stability issues and increased the crash-free users to 99.5%.
- Managed to convince the senior technical managers and the investors to make a new plan for the app development which lead to amazing results.
- Worked as a single developer for the Ola Lite Android application with less than 550KB of APK size.
- Collaborated with multiple teams (of up to 30 people) to develop a food ordering app called Foodpanda and shipped features in a super-fast pace environment.
- Developed generic tools like event processing and Auth, which were used across the organization for multiple products.
Technologies: Android SDK, Google Maps, Model View Presenter (MVP), Model View ViewModel (MVVM), QR Codes, App Development
Lead Engineer
2012 - 2015
Samsung
- Won two Spot Awards for the contributions done towards ChatOnV and TizenForum OAuth implementation.
- Worked on Samsung Galaxy Gear on the implementation of ChatOn's Gear version by creating the entire persistent layer and the user interface.
- Utilized the WebRTC framework and came up with a new video calling application called ChatOnV India.
- Worked on ChatOnV application for several devices and user interface designs. Made reusable code to support multiple designs of the same app.
Technologies: Android SDK, MVC Design, WebRTC, SIP, OAuth 2, VoIP
Software Engineer
2011 - 2012
Motorola Mobility
- Worked on a unique fitness tracking smartwatch called MotoACTV and developed an app as part of the operating system.
- Implemented the communication between the smartphone and MotoACTV to transfer user notifications over Bluetooth.
- Created the user interface for the received notifications on MotoACTV.
Technologies: Android SDK, Bluetooth, User Interface (UI), Git
Junior Game Programmer
2010 - 2011
Gameloft
- Worked on copping down the full versions of the games to demo versions.
- Ported 2D games from J2ME to Android and did this for a few games like Brain challenge 3, Prince of Persia, and UNO.
- Stood in the top three positions of the company to port more games from J2ME to Android in the year.
Technologies: J2ME, Android SDK, Java, Subversion (SVN)
Experience
Bounce Keyless Bike Service
Made an app from scratch by accommodating multiple business types offered by the company and lead a team of four to seven people.
The app had one million daily active users, making 100,000 completed bookings per day.
Created an impact on the company's overall business by making a smooth way to plugin multiple business types.
The app had one million daily active users, making 100,000 completed bookings per day.
Created an impact on the company's overall business by making a smooth way to plugin multiple business types.
Shuttle Driver
Increased the app usage from 5% to 98% by stabilizing the app and enabled the business to have a detailed understanding of the business on the ground.
Taken the entire ownership on the app to convince the respective leadership to make a new project plan for the developments and succeeded by recording 98% of the daily bookings to go through the application.
Taken the entire ownership on the app to convince the respective leadership to make a new project plan for the developments and succeeded by recording 98% of the daily bookings to go through the application.
Musical Alarm with Bluetooth (Open Source)
An alarm clock application to connect to the Bluetooth speakers automatically and play a bunch of music tracks based on the configuration. It disconnects after the playback completion, allowing other Bluetooth devices to access the speakers.
The app is implemented for Android devices, and we're planning to open-source for contributions to implement an efficient user interface and common functionalities of a music player.
The app is implemented for Android devices, and we're planning to open-source for contributions to implement an efficient user interface and common functionalities of a music player.
Telugu Stories
Developed an app to publish the stories by reusing the ready-made services available in the market. Serving dynamic content to the users without implementing back-end services for the same.
Spent as little as 30 hours to get the app up and running with the Google login, story browsing, and user comments.
Spent as little as 30 hours to get the app up and running with the Google login, story browsing, and user comments.
Education
2005 - 2009
Bachelor's Degree in Computer Science
Sri Sai Institute of Technology and Science (JNTU) - Rayachoty, India
Skills
Libraries/APIs
Retrofit, Android Architecture Components, Google Maps, WebRTC
Tools
Firebase Cloud Messaging (FCM), Git, Subversion (SVN), Firebase Authentication, CircleCI
Frameworks
Android SDK, Dagger 2, OAuth 2, Media Players
Languages
Java, Kotlin
Paradigms
Clean Architecture, Model View Presenter (MVP), Model View ViewModel (MVVM), App Development, MVC Design
Storage
RoomDB, Firebase Realtime Database
Platforms
Firebase, J2ME
Other
Pagination, Coroutines, Hilt, Computer Science, Software Development, QR Codes, SIP, VoIP, Bluetooth, User Interface (UI), MVP Design
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