Andrei Smirnov, Qt Developer in Saint Petersburg, Russia
Andrei Smirnov

Qt Developer in Saint Petersburg, Russia

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




Saint Petersburg, Russia



Preferred Environment

JetBrans IDEs, Visual Studio, Windows or Mac

The most amazing...

...thing I've coded is a secure messaging platform.


  • Lead Software Engineer

    2015 - 2019
    • Designed and developed a secure messaging applications suite.
    • Built web applications from the ground up.
    • Designed and developed supporting back-end services.
    Technologies: C++, Qt, JavaScript (ES6), React, Go, Cryptography
  • Freelance Software Engineer

    2015 - 2015
    • Designed and developed .NET SDK for DreamFactory API:
    Technologies: .NET, C#, RESTful API
  • 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.
    • Drastically improved corporate build and deployment strategy to minimize day-to-day efforts.
    • Implemented and enforced product quality tools.
    Technologies: ASP.NET, AngularJS, Web Services
  • Lead Application Developer

    2013 - 2014
    Deutsche Bank AG
    • Enhanced WPF applications (FX Trading) for investment banking in respect to performance, security, and code quality.
    • Developed a number of WPF Controls (MVVM).
    • Designed and developed a metadata-driven framework for desktop interoperability and enabled several existing applications to use this framework.
    Technologies: C#, .NET, WPF, Prism, Roslyn, DSL
  • 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) used in Microsoft Online Services.
    Technologies: C#, .NET, NoSQL, C++, MapReduce
  • 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: Enterprise Linux (SuSE), C++/C, HA, Pacemaker
  • 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: C++ and .NET, Embedded, J2ME
  • 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++.
    • Created a whole family of end-user 3D applications in C++ and Qt (Viewer, Editor, utilities, etc.).
    • Programmed a large-images processing engine (satellite imagery) in C and C++.
    Technologies: C++/C, 3D graphics, OpenGL, Qt, Delphi


  • REVERSCREEN (Development)

    REVERSCREEN is a concept of a new snipping tool that provides automatic object cropping by leveraging modern computer vision algorithms. The project was made for fun in my spare time and does not compete with any businesses.

  • DB Autobahn (Other amazing things)

    A family of UI products developed as part of a team.

  • Demoscene: 4k Intro (Development)

    Made for fun, in 4096 bytes of C and OpenGL.

  • Sochi - 3D Engine for GIS (Other amazing things)

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

  • Computational Geometry API for Nokia Gate5 GmbH (Development)

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

  • Autobahn Toolbar (Development)

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

  • .NET SDK for DreamFactory RESTful API (Development)

    Designed and developed .NET SDK v1 for DreamFactory.

  • A Note-taking Application for BlackBerry 10 (Development)

    Developed in my spare time just for fun.

  • Retirement Benefits Management Portal for (Other amazing things)

    Collaborated to design and develop the complete web portal for used by third parties to manage their employee benefits.

    Stack: .NET, MS SQL, AngularJS

  • Route66: A Car Repair Shop (Web Application) (Development)

    A React web application with Redux, Node, Mongo, and Firebase.

  • Vault (Development)

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

  • React-cr (Development)

    A tiny library for conditional rendering in JSX.

  • The Largest App (Development)

    A desktop application for finding largest files and folders.
    Written with Qt5 (C++/QML).

  • Jet Pipes (Development)

    Yet another "pipes screensaver" powered by Qt3D.

  • 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.
  • .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.


  • Languages

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

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

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

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

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

    Windows, BlackBerry, Linux, Blockchain, Ethereum, Windows Phone
  • Other

    Cryptography, IPC, Windows Presentation Foundation (WPF), Code Contracts, MSYS2, Embedded Systems
  • Storage

    NoSQL, Microsoft SQL Server, SQLite, MySQL


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

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