Hrant is available for hire

Hrant Kajavan Nurijanyan

Verified Expert in Engineering

C++ Engineer and Back-end Developer

Location

Yerevan, Armenia

Toptal Member Since

March 8, 2022

Hrant is a C++ engineer with six years of experience working in top companies like PicsArt and Krisp. He has tried many programming languages and soon discovered his only passion is writing fast and optimal back-end code with C++. Hrant embraced freelancing looking for new learning and working opportunities, as he is always ready for new challenges and eager to try things no one ever tried.

Programming Software Engineering Algorithms Computer Science Back-end USB WebAssembly Slack JetBrains C++Git Python CLion PostgreSQL Windows

Portfolio

Passware

C++17, C++, Python 3, Python 2, Crypto++, Cryptography, SQL

Krisp

C++17, CMake, C++, Git, Slack, CLion, Design Patterns, Data Structures...

PicsArt

C++17, CMake, OpenCV, Python 3, C++, Git, Slack, CLion, Design Patterns...

Experience

Algorithms - 7 years Design Patterns - 7 years Programming - 7 years C++ - 7 years Data Structures - 7 years Git - 7 years CLion - 3 years CMake - 3 years

Availability

Part-time

Preferred Environment

Slack, Linux, C++17, Jira, CMake, Conan, Python 3, Game Design

The most amazing...

...solution I've developed is a fast pixel converter library using C++ and template metaprogramming.

Work Experience

Software Engineer

2023 - PRESENT

Passware

Involved in a cryptography project, implementing different features.
Worked with Python research scripts and implemented the logic in C++.
Oversaw 2-3 possible security leaches and bugs that can be used against our project.

Technologies: C++17, C++, Python 3, Python 2, Crypto++, Cryptography, SQL

C++ Software Engineer

2021 - 2023

Krisp

Developed and worked on Krisp's audio SDK, implementing some noise cancellation algorithms.
Worked on porting Krisp SDK to Web, compiled to JavaScript, and used Emscripten to WebAssembly.
Resolved bugs and implemented a set of features required by SDK clients.
Researched and learned many programming techniques to constantly evolve and address clients' needs.

Technologies: C++17, CMake, C++, Git, Slack, CLion, Design Patterns, Data Structures, Algorithms, Mathematics, Multithreading, Storage, Linux, Architecture, Amazon Web Services (AWS), Web Development, PostgreSQL, Python, Agile Sprints, MacOS, WebAssembly, SQL

C++ Software Engineer

2020 - 2021

PicsArt

Built a pixel converter library that converts pixels from one space to another.
Created image effects applying indoor company-used techniques.
Researched and read mathematical papers to optimize our algorithms.

Technologies: C++17, CMake, OpenCV, Python 3, C++, Git, Slack, CLion, Design Patterns, Data Structures, Algorithms, Mathematics, Multithreading, Storage, Linux, Color Theory, Color Science, Architecture, PostgreSQL, Agile Sprints, MacOS, OpenGL, SQL

Full-stack Engineer

2019 - 2020

Integral Labs

Worked on a crypto-currency website, which was the mediator for every trade between traders.
Tracked and fixed some bugs using Jira reporting tool.
Learned JavaScript language with Node.js and AngularJS during the work.

Technologies: JavaScript, Node.js, Git, Slack, Algorithms, Back-end Development, Storage, Windows, Microservices, Back-end, Architecture, Web Development, TypeScript, REST, gRPC, Python, WebSockets, Agile Sprints, REST APIs, Game Development, HTML5, SQL

Junior Android Developer

2015 - 2017

PicsArt

Worked on the PicsArt's shop category in the Android app, where users could buy unique stickers.
Developed a deep linking library for Android, enabling the launch of the PicsArt app via a deep link URL.
Resolved bugs and used Jira and Jenkins for testing and reporting them.

Technologies: Java, Android, Git, Slack, Data Structures, Algorithms, Storage, Back-end, Architecture, PostgreSQL, REST, Agile Sprints, MacOS, SQL

Experience

PicsArt Image Engine

https://picsart.com/

The PicsArt Image Engine contains core and cross-platform functionality for applying effects to any image using the Linux-based OpenGL and Mac-based Metal platforms. I added new features to this engine and used it to create effects that were later published in the PicsArt app.

Krisp App

https://krisp.ai/

Krisp is a noise-canceller app that uses AI and signal-processing techniques to suppress the noise during critical online meetings. It is published on Windows, Mac, and Web. I've worked on a Web platform and delivered JS-SDK to many of Krisp's enterprise clients.

QT-Powered Military Projects

These were military projects to control drones and weapons, powered with Qt framework as the application GUI and C++ as the core language. I used marble maps to enable geolocation and databases to store data and then analyze it.

Skills

Languages

Python, C++, TypeScript, JavaScript, Go, Java, SQL, Python 3, C++17, Python 2, HTML5

Tools

Slack, CLion, JetBrains, Git, CMake, Visual Studio, Microsoft Visual C++, GIS, Conan, Qmake, Jira

Paradigms

Design Patterns, REST, Microservices

Platforms

Windows, MacOS, Linux, Amazon Web Services (AWS), NVIDIA CUDA, Android, Apache Kafka

Storage

PostgreSQL

Other

Programming, Software Engineering, Computer Science, Data Structures, Algorithms, Mathematics, Back-end, Architecture, USB, Mobile Back-end, Agile Sprints, WebAssembly, Multithreading, Storage, Web Development, Compilers, Code Generators, WebSockets, Game Development, Game Design, Algebra, Game Physics, Back-end Development, Color Theory, Color Science, Game Engine Programming, Cryptography

Frameworks

Qt, Django, Ruby on Rails (RoR), Qt 5, gRPC, Flask

Libraries/APIs

Node.js, ArcGIS, OpenCV, REST APIs, OpenGL, Crypto++

Education

2013 - 2017

Bachelor's Degree in Informatics and Applied Mathematics

Russian-Armenian (Slavonic) University - Yerevan, Armenia

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