Andrei Smirnov, Software Developer in Antalya, Turkey
Andrei Smirnov

Software Developer in Antalya, Turkey

Member since September 30, 2014
Andrei is a passionate full-stack software engineer with 20 years of experience who worked for leading brands like Microsoft, EMC, Motorola, and Deutsche Bank. He built many successful projects utilizing various software stacks for mobile, desktop, and web platforms. He is well versed in C++, Go, and JavaScript languages and the most in-demand frameworks, libraries, and tools.
Andrei is now available for hire


  • OnyxCorp
    WebAssembly, WebRTC, Protobuf, Chromium, CMake, QML, JavaScript, Cryptography...
  • DreamFactory
    RESTful Development, RESTful APIs, C#, .NET
  • Return On Intelligence
    Selenium, Mentorship, People Management, SonarQube, C#, Web Services...



Antalya, Turkey



Preferred Environment

Windows, Linux

The most amazing...

...thing I've coded is a secure messaging platform that leverages modern post-quantum crypto algorithms.


  • Lead Software Engineer

    2015 - 2021
    • Designed and developed a post-quantum, secure messaging system that included client framework, client applications, back end, and web portal management.
    • Refactored legacy crypto code using the newest C++17 features, with full test coverage and a new build system with CMake and Conan.
    • Designed and integrated voice and video calls with WebRTC.
    • Added support to WebAssembly (Emscripten) to enable messaging applications to run in browsers.
    • Mentored new team members, conducted technical webinars, and maintained detailed documentation.
    Technologies: WebAssembly, WebRTC, Protobuf, Chromium, CMake, QML, JavaScript, Cryptography, Go, React, Qt, C++
  • Freelance Software Engineer

    2015 - 2015
    • Designed and developed .NET SDK for DreamFactory API:
    Technologies: RESTful Development, RESTful APIs, C#, .NET
  • Technical Lead

    2014 - 2015
    Return On Intelligence
    • Designed and developed a web portal for employee benefits management (insurance, retirement, etc.).
    • Introduced a web services mocking approach to ease local debugging and troubleshooting.
    • Enabled automatic testing using Selenium. Implemented and enforced product quality tools.
    • Dramatically improved corporate build and deployment strategy to minimize day-to-day efforts.
    Technologies: Selenium, Mentorship, People Management, SonarQube, C#, Web Services, AngularJS, ASP.NET
  • Lead Application Developer

    2013 - 2014
    Deutsche Bank AG
    • Designed and developed a metadata-driven framework for desktop interoperability and enabled several existing applications to use this framework. Currently all Autobahn software is using this framework called "synapse".
    • Enhanced WPF applications (FX Trading) for investment banking in respect to performance, security, and code quality.
    • Developed a number of WPF Controls (MVVM) for banking applications.
    Technologies: Roslyn, Prism, Windows Presentation Foundation (WPF), .NET, C#
  • Software Developer

    2010 - 2012
    Microsoft Corporation
    • Developed a rapid data serialization SDK (similar to Google ProtoBuf), including the C# code generator for it:
    • Developed an object-oriented logging framework (business data logging) for in-house cloud infrastructure, now used by AdCenter and Bing.
    • Implemented a remote-procedure calls (RPC) engine and toolset for a brand new key-value store (NoSQL) currently used by Azure.
    Technologies: Azure, MapReduce, C++, NoSQL, .NET, C#
  • Senior Software Engineer

    2009 - 2010
    EMC Corporation
    • Worked on a high-availability Linux-based cluster (HA), integrating and configuring Pacemaker for network-attached storage (NAS).
    • Introduced cgroups feature usage to the HA cluster.
    • Developed an out-of-memory (or overcommit) monitoring daemon in C.
    Technologies: Pacemaker, Linux, C, C++, SUSE
  • Senior Software Engineer

    2006 - 2009
    Motorola, Inc.
    • Worked on several Motorola mobile device platforms, implementing security features (JSR177), branding services (T-Mobile MyFaves), etc.
    • Integrated Adobe Flash Lite player to the mainstream Motorola mobile platform (P2K). Collaborated with Adobe.
    • Participated in AJAR mobile platform development.
    • Developed a number of internal tools for embedded software development in C# and C++.
    Technologies: J2ME, .NET, C++
  • Senior Software Engineer

    2002 - 2005
    The Institute of Telecommunications
    • Designed and developed a 3D engine for GIS (Geo informational services) in C++, STL, and OpenGL.
    • Developed a cross-platform computational geometry math library in C++.
    • Designed and built a full-featured application suite for manipulating GIS data.
    • Programmed a large-images processing engine (satellite imagery) in C and C++.
    Technologies: GIS, Qt, OpenGL, 3D Graphics, C++, C



    Created a concept of a snipping tool that provides automatic object cropping by leveraging modern computer vision algorithms.

  • DB Autobahn

    Developed a family of UI products and worked in a team.

  • Demoscene: 4k Intro

    Created a home-made project using C and OpenGL, in 4096 bytes.

  • Sochi - 3D Engine for GIS

    Developed a cross-platform 3D engine in C/C++ with OpenGL. It was used by Russian DoDF.

  • Computational Geometry API for Nokia Gate5 GmbH

    Designed and developed a computational geometry library for 2D/3D graphics, used in a fork of Nokia Maps.

  • Autobahn Toolbar

    Implemented core functionality of the Toolbar, a central UX component used by many trading apps.

  • .NET SDK for DreamFactory RESTful API

    Designed and developed .NET SDK v1 for DreamFactory.

  • A Note-taking Application for BlackBerry 10

    Developed a Note-taking app, in his spare time, just for fun.

  • Retirement Benefits Management Portal for

    Collaborated to design and developed the complete web portal for used by third parties to manage their employee benefits. Technologies used include .NET, SQL, and AngularJS.

  • Route66: A Car Repair Shop (Web Application)

    Created a React web application using Redux, Node, Mongo, and Firebase.

  • Vault

    Developed a tiny C++ library that manages password-protected files.

  • React-cr

    A tiny library for conditional rendering in JSX.

  • The Largest App

    Developed a desktop application for finding the largest files and folders using Qt5 (C++/QML).

  • Jet Pipes

    Created the pipes screensaver using Qt3D.

  • .NET Best Practices and Tips by Toptal Developers (Publication)
    This resource contains a collection of .NET best practices and tips provided by our Toptal network members.
  • .NET Best Practices and Tips by Toptal Developers (Publication)
    This resource contains a collection of .NET best practices and tips provided by our Toptal network members.
  • The Missing Article About Qt Multithreading in C++ (Publication)
    C++ developers strive to build robust multithreaded applications, but multithreading was never an easy thing to do. In this article, Toptal Freelance Qt Developer Andrei Smirnov talks about several scenarios exploring concurrent programming with the Qt framework.
  • A Vital Guide to Qmake (Publication)
    Qmake is a build system tool shipped with Qt library that simplifies the build process across different platforms. In this guide, Freelance Qt Developer Andrei Smirnov describes the most useful qmake features and provides real-world examples for each of them.
  • How to Bootstrap and Create .NET Projects (Publication)
    To create a .NET project from scratch, simply using Visual Studio Wizard is good enough most of the time. However, the default project settings produced by wizards are hardly acceptable for professional teams, as they set too low of a bar on quality. In this article, Toptal Freelance Software Engineer Andrei Smirnov guides us through several standard practices, configuration files, and project settings every developer should apply when starting a new .NET project. Doing this in the very beginning of a project decreases future technical debt and makes product source code readable and professional-looking.
  • Meet Bond, Microsoft Bond - A New Data Serialization Framework (Publication)
    Microsoft Bond is a modern data serialization framework. It provides powerful DSL and flexible protocols, code generators for C++ and C#, efficient protocol implementations for Windows, Linux, and Mac OS X. This article is a quick guide of the features and use of this framework.


  • Languages

    C, Go, QML, C++, C#, UML, JavaScript, Visual Basic for Applications (VBA), Domain-specific Languages (DSLs), Python 3, Delphi
  • Frameworks

    Redux, .NET, Qt, Google Protocol Buffer, Windows Presentation Foundation (WPF), AngularJS, NUnit, ASP.NET Web API, Windows Communication Framework (WCF), Selenium, Chromium Embedded Framework (CEF), ASP.NET
  • Libraries/APIs

    Protobuf, React Redux, React, OpenGL, OpenSSL, Win32 API, ETW, WebRTC, jQuery
  • Tools

    Stash, Jira, ReSharper, Microsoft Visual Studio, Git, TeamCity, TFS, MSBuild, Roslyn, CC.NET, SonarQube, CMake, Qmake, Prism, Pacemaker, JetBrains, Visual Studio, GIS
  • Paradigms

    Concurrent Programming, Unit Testing, Agile Software Development, Test-driven Development (TDD), REST, MapReduce, RESTful Development
  • Platforms

    Windows, BlackBerry, Linux, Docker, J2ME, MacOS, Azure, Blockchain, Ethereum, Windows Phone
  • Other

    Cryptography, IPC, 3D Graphics, Code Contracts, MSYS2, Web Services, RESTful APIs, Chromium, WebAssembly, People Management, Mentorship, Embedded Systems
  • Storage

    NoSQL, Microsoft SQL Server, SQLite, SUSE, MySQL


  • Specialist degree in Engineering
    1996 - 2002
    Baltic State Technical University - Saint-Petersburg, Russia

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