SUMMARY:

• 15+ years of experience in software development with expertise in Android framework, Web development and Internet Telephony.
• Hands - on experience in all stages of SDLC including requirement analysis, design, development, testing, implementation and support.
• Architected, designed and implemented Android Mobile Applications such as Confidential, Confidential, Holaa & Studycopter - all available on google, playstore.
• Expert on Native Android SDK and good exposure in NDK as well, Eclipse and Android Studio IDE.
• Experienced in push notifications implementations and incorporated HTML to create hybrid sections of application.
• Well versed with source control tools such as Git and Continuous integration using Jenkins.
• Thorough understanding in OOAD, data structure and algorithms, and design patterns
• Experienced in integrating mobile applications with backend REST & SOAP web services, external APIs and libraries such as Mobile analytics.
• Experience in designing eCommerce applications with payment gateways
• Experience in implementing secure web applications over HTTPS & TLS/SSL
• Experience in integrating Linphone Media Engine VoIP C library in Confidential iOS application.
• Experience in UI design using Interface builder and Storyboards in iOS development.
• Experience in GCD based asynchronous processing in iOS.
• Experience in designing responsive mobile first design with BootStrap.
• Experience in C and C++ implementation of VoIP components such as SIP client and Proxies
• Strong debugging, troubleshooting & performance tuning skills.
• Ability to rapidly learn and take advantage of new concepts, business models, and technologies.
• Worked on iOS applications as well for Confidential and Confidential .
• Exposed to Backend technologies such NodeJS, PHP and Web Front-end such as HTML5, Javascript, jQuery.
• Exposed to Spring Boot, Spring Data, SOLR search API, MongoDB, and MySQL
• Coached and mentored junior team-members.
• Experience with Agile Development Methodologies & worked as scrum master
• Self-motivated and a good team player with excellent communication and interpersonal skills.

SKILLS SUMMARY:

Mobile Application Development: Java, Android, SDK, NDK, JNI

Web Technologies: Javascript, NodeJS, HTML5, Bootstrap, Jquery, CSS

Databases: SQLite, MongoDB, MySQL, Real Time Database- Firebase

Protocols: Bluetooth Low Energy(BLE), HTTP, VoIP, TCP/IP, SIP, IMS, XMPP, Jingle, Rest Web Services

Tools: JIRA, Git, TestRails, Asana, Github, Wireshark, AsanaSlack, HipChat, Android Studio, Xcode, Gradle, Progard

Others: C, C++, OOAD, iOS, Objective C, Linux, LAMP.

Libraries: Stripe, Volley, OneSignal, Crashlytics, Picasso, BugSense, Junit

PROFESSIONAL EXPERIENCE:

Confidential, San Jose, CA

Android Architect

Responsibilities:

• Working on the Confidential Android App for features, enhancements and bug fixes.
• Helped improved Android App rating from 3.5 to 4.3 in three releases by re-hauling the UI and improving UX.
• Resolved BLE-WiFi interference issues and made UX much better.
• Integrated Open Source Card Reader SDK from PayPal.
• Implemented run-time permissions for Marshmallow and above.
• Worked with Android BLE stack as well as implemented material design.
• Implemented HTTPUrlConnection based backend interaction with Confidential Web Services and removed Default HTTP Client implementation.
• Migrated codebase from Eclipse to Android Studio. Reviewed iOS code.
• Implemented Rating functionality at different trigger points.
• Developed certain endpoints on NodeJS backend
• Confidential is available on Google PlayStore and AppStore

Tools: Android, Java, iOS, Objective-C, NodeJS, BLE

Confidential

Android Developer

Responsibilities:

• Acted as Scrum Master in agile mode and also contributed to different features, issues and enhancements.
• Lead development of features such as Group Chat, and Chat-rooms for the Android Application. I contributed to both UI and App backend.
• Lead and implemented Facebook integration, Message Queuing, call register, C2DM/GCM push notifications support, Animated Ads and rich media support.
• Rehauled the Advertisement module to a more modular design.
• Implemented Phonebook- Confidential Roster synchronisation for the Confidential App for Android.
• Led UI overhaul to new design making use of Material Design concepts.
• Implemented LRU cache mechanism in android for Avatars.
• Implemented UI using Loaders and fragments along with SQLite storage
• Implemented network protocol using XMPP version for language and location list retrieval.
• Overhauled ICE-UDP implementation & Fixed issues in Stun server and Stun client.
• Contributed to code and architecture of the Holaa Application which is a Caller Identification and Spam call blocking app similar to TrueCaller.
• Lead from scratch for development of VoIP on Windows Phone 8 and also VoIP media engine replacement for Android, iPhone, and Desktop platforms.
• Lead performance optimizations in various spheres: RAM usage, Battery Consumption, CPU utilization.
• Coordinated with QA and Product Management in release sprints.
• Fixed various issues from field and QA
• Confidential, Holaa available on google playstore, Confidential available on AppStore

Tools: Android, Java, XMPP, Jingle, VoIP, iOS, Objective-C, Jira, Confluence, DDMS.

Confidential

Software Consultant

Responsibilities:

• Worked on Web and Android development.
• Developed App prototypes such as Weather App, Quiz App and a Javascript based snake game.
• Coded the main activities such as splashscreen, quiztopic, question selector, questionlayout, gameinfo for the Quiz App.
• Worked on the database module dbhelper in assets directory for Quiz App.
• Build layouts in XML such as gameinfo.xml, main.xml, questionlayout.xml, questionselector.xml, splash.xml, Added animation for splashscreen.
• Added code for table layout in javascript for the game boundaries.
• Introduced activity to load the index.html file where the Javascript bound code resides.
• Added modules for movingsnake, foodplacement and gamecontroller
• Added buttons and tied them to Javascript code
• Tested on emulator and finally deployed on Huawei Android phone (ideos x5 Android 2.2).
• Used SQLite, Async Task for Quiz App whereas a third party JSON web service for weather application.

Tools: Android, Java, Javascript, REST Web Service

Confidential

Principal Engineer

Responsibilities:

• Worked on Open Cloud and Satellite Communication System Component for HNS
• Implemented finite state machines of Service in Java and Eclipse with OpenCloud SDK
• Ported proxy component of HNS Satellite Communication in C++ and Solaris
• Wrote Unit test cases using the unit test framework
• Guided a junior team member on the project.
• Implemented and ported VoIP client for Android.
• Used Android NDK and C++ code for media engine and SIP protocol for signalling.

Tools: Java, OpenCloud, C++, Android

Confidential

Senior Module Leader

Responsibilities:

• Developed traffic endpoints SIP simulator application to test the SIP proxy.
• Wrote enhancements to this Swing based application.
• Wrote SSL/TLS implementation in traffic application to secure the RTP stream.
• Implemented network outage, reboot, failover functionality for SIP endpoints supporting TLS/TCP connections during mass registrations & active traffic.
• Implemented Client side of Session Timers in the traffic application.
• Added features as these were updated in Main SIP proxy application to keep the simulator up to date for testing the main application.
• The Confidential Communication Manager work involved fixing field issues in a C++ codebase.
• Fixed COR issues, Voice Announcement, QSIG Call Forwarding issues etc.

Tools: C++, Java, SIP, Linux

Confidential

Systems Engineer

Responsibilities:

• Worked on IP Multimedia System components such as Proxy-CSCF, MGCF
• Wrote functional specifications for different features.
• Involved in writing & reviewing FSDs for different features like emergency, ENUM, Resource Priority, Privacy etc, PCSCF.
• Worked on SIP stack integrated in P-CSCF.
• Implemented in C++ codebase- the Session timers based on RFC 4028
• Implemented the Registration-Subscribe-Publish feature that lets clients subscribe to registration events in Proxy-CSCF.
• Tested system end-to-end for sanity.