Résumé

Skills and Proficiency

• Languages known: Java, Python, C/C++, HTML5/CSS3, XML, JavaScript, SQL
• Technologies:​ Real-Time Communication, WebRTC, RTP/RTCP protocol, H.264 codec, GStreamer, Embedded Android (AOSP), Embedded Linux, LK bootloader, Android SDK, Android NDK, JNI, V2X, API design, Full-stack web development, Git/Github
• System testing tools:​ iperf, powertop, trepn, Snapdragon/Adreno profiler
• Web technologies:​ Servlet/JSP/JSF, JDBC, DBMS/MySQL/Oracle, Bootstrap, JQUERY, AJAX

Experiences

• Microsoft (Software Engineer 2)
  ^{Tallinn, Estonia • November, 2020 - Present}

  • Main responsibility is to improve the experience in real-time video communication on various Microsoft products including Microsoft Teams and Skype.
  • Improved video freezes in 1:1 and group video calls significantly by improving the packet loss calculation.
  • Wrote a functional test framework to catch bugs early in the product life cycle.
  • Optimized and implemented highly complex features(e.g., simulcast) involving RTP protocol and H.264 codec level changes to greatly improve the video experience.

• Tonbo Imaging UAB (Member of Technical Stuff)
  ^{Vilnius, Lithuania • April, 2019 - October, 2020}

  • Implemented V2X features (CAM, DENM) in automotive multi-sensor camera system.
  • Implemented live video streaming in automotive multi-sensor camera system using Gstreamer.
  • Optimised CPU, GPU, RAM performance for thermal image processing.

• Tonbo Imaging (Member of Technical Stuff)
  ^{Bangalore, India • January, 2018 - April, 2019}

  • Responsibilities were to optimise and add new features in Android OS (AOSP)/Linux for security thermal cameras and weapon scopes running Qualcomm Snapdragon 210 (MSM8909)
  • Introduced interface for thermal imaging to the Android OS
  • Implemented and optimised different types of over-the-air OS updates for different types of products
  • Implemented and optimised live video streaming from weapon scopes
  • Wrote hardware and software functional tests for thermal cameras to validate system (software and hardware) performance using real and simulated data
  • Implemented full system recovery mechanism from bootloader
  • Developed android app used with the defense grade thermal cameras

• Tata Consultancy Services (System Engineer)
  ^{Kolkata, India • July, 2015 - January, 2018}

  • Responsibilites were to develop and maintain several features of their existing as well as new web applications
  • Work mainly based on Java and PL/SQL
  • Developed a highly functional UI template for a set of applications using Bootstrap and Primefaces

• ConfirmTKT.com (Internship)
  ^{Bangalore, India • Aug, 2014 - Feb, 2015}

  • Made the Windows Phone version of their existing Android app on predicting railway ticket status using historical data
  • Was responsible for developing as well as making an automated test suite for the application
  • Within two months, the Windows Phone app featured as one of the top apps in travel category on the Microsoft Store

Certifications

• Oracle Certified Associate, Java SE 7 Programmer

Education

• B.Tech in Information Technology (CGPA: 8.436 / 10)
  Jalpaiguri Government Engineering College • 2011 - 2015

• 12th Grade (Percentage: 85%)
  Birati High School (West Bengal Council of Higher Secondary Education) • 2011

• 10th Grade (Percentage: 87.125%)
  Birati High School (West Bengal Board of Secondary Education) • 2009

Achievements

• Was one of the first members to set up the Tonbo Imaging R&D center in Vilnius, Lithuania.
• Selected as the winner of On The Spot Award at TCS and got appreciation from the client for the excellent work done for them.
• Was awarded the STAR performer of the batch in TCS Initial Learning Program.
• Was a competent tier member of Microsoft (India) App Builders Club.
• Was a Microsoft (India) Student Partner.
• Was a Firefox Student Ambassador.

Personal Projects

• RTC app using WebRTC native API

  Built an RTC app using C++ to send and receive audio and video using WebRTC native API. The signaling plane was implemented using an HTTP server.

• Surveillance camera using embedded Android (AOSP):

  Customized Android (version 9) to make a 24/7 active video surveillance camera with Beagleboard X15 running TI AM5728. Features include live RTSP video streaming using GStreamer, GNSS support, commands API for clients.

• Speaking Horizon (Windows Phone app):

  A speech synthesizer app to make communication easier for the people who cannot talk.

• Fit X (Android app):

  Measures several fitness parameters using the device sensors and stores the fitness data to display fitness history report to the user.