Rajib Chandra Das

- implemented stricmp(case insensitive string comparison) using assembly x86_64 which outperforms currently available solution https://linux.die.net/man/3/strncasecmp - implemented find_i_str(case insensitive string search) using assembly x86_64 resulting 20% faster execution in the whole process - implemented toLower and toUpper conversion in assembly x86_64, which outperforms C++ standard library function std::transform in specific scenario - worked on 25+ refactoring, improvement, feature and bug tickets

- worked with 4 different highly functional web applications, implemented 50+ features using Node.js, Express.js, Vue.js, Typescript - implemented 100+ APIs(REST, Graphql) interecting with databases i.e. PostgreSQL, MongoDB. - worked on industry-adopted technologies and frameworks - wrote 200+ unit tests to verify the back-end functionalities - documented 100% of technical specifications and dependencies of applications - worked with a research project based on microservice architecture using Python, Golang

- Concurrent Programming using Java. - Functional Programming using Haskell. - Logic Programming using Prolog.

-Worked with raw audio, image and video data like RGB24, RGB32, I420, NV12, NV21, BMP, PCM, PNG etc. -Worked with audio and video encoders and decoders like H.264, G.729, Opus. -Reduced video processing (Convert, Downscale, Crop, Rotate) time by 80% implementing assembly for arm32, arm64 platform with NEON extension. -Implemented network adaptive bandwidth estimation algorithm to control video bitrate. -Used Jenkins, OwnCloud to maintain continuous delivery and continuous deployment.

-Integrated FFMpeg framework with transcoding Server. -Integrated VP8 encoder/decoder based on rfc6386. -Integrated H264 encoder/decoder based on rfc6184. -Implemented real time h264 <--> vp8 transcoder on server to establish communication between two clients where one client sends/receives h264 data and other client process vp8 during video call. -Integrated Google Test framework to manage automated unit testing mechanism. -Implemented a server solution for communication among SIP, XMPP, WebRTC clients.

Structured Programming Language, Algorithm Design & Analysis, Numerical Analysis, Database System, Graphics and Image Processing, Theory of Computation, Artificial Intelligence, Web Engineering, Machine Learning.