Publication
A Vital Guide to Qmake
https://www.toptal.com/qt/vital-guide-qmake
Andrei is available for hire
Hire AndreiAndrei Smirnov
Verified Expert in Engineering
Full-stack Developer
Location
Ankara, Turkey
Toptal Member Since
December 11, 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's built many successful projects utilizing various mobile, desktop, and web software stacks. Andrei is well-versed in various languages, including C++, Go, and JavaScript, and the most in-demand frameworks, libraries, and tools.
Portfolio
A Blockchain Startup
Go, Blockchain, Solidity, Ethereum Smart Contracts, PostgreSQL...
OnyxCorp
WebAssembly, WebRTC, Protobuf, Chromium, CMake, QML, JavaScript, Cryptography...
DreamFactory
RESTful Development, REST APIs, C#, .NET
Experience
Availability
Part-time
Preferred Environment
Windows, Linux, MacOS
The most amazing...
...thing I've coded is a secure messaging platform that leverages modern post-quantum crypto algorithms.
Work Experience
Senior Blockchain Engineer
2021 - PRESENT
A Blockchain Startup
- Designed and developed various blockchain projects.
- Distributed systems design, observability, and alerting.
- Integrated various 3rd party crypto/blockchain projects.
Technologies: Go, Blockchain, Solidity, Ethereum Smart Contracts, PostgreSQL, Decentralized Finance (DeFi), Grafana
Lead Software Engineer
2015 - 2021
OnyxCorp
- 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
DreamFactory
- Designed and developed .NET SDK for DreamFactory API: https://github.com/dreamfactorysoftware/.net-sdk.
Technologies: REST APIs, RESTful Development, 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: Mentorship, People Management, SonarQube, C#, Web Services, AngularJS
Lead Application Developer
2013 - 2014
Deutsche Bank
- 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, Windows Presentation Foundation (WPF), .NET, C#
Software Developer
2010 - 2012
Microsoft
- Developed a rapid data serialization SDK (similar to Google ProtoBuf), including the C# code generator for it: Github.com/microsoft/bond.
- Built 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: 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++
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: .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
Experience
REVERSCREEN
https://github.com/pinebit/reverscreenInvented, designed, and developed a concept of a snipping tool that provides automatic object cropping by leveraging computer vision algorithms. This tool is actively used by UX/UI designers.
Stack: Qt, C++, OpenCV library, and more.
Stack: Qt, C++, OpenCV library, and more.
DB Autobahn
https://autobahn.db.comParticipated in Autobahn FX products development: from protocols to user interface (.NET/WPF).
I designed and implemented a flexible interoperability protocol that connected many Autobahn products (existing and new). This system is called Synpase and is currently in production and driving the Autobahn ecosystem.
I designed and implemented a flexible interoperability protocol that connected many Autobahn products (existing and new). This system is called Synpase and is currently in production and driving the Autobahn ecosystem.
Demoscene: 4k Intro
http://www.pouet.net/prod.php?which=54415Created a home-made project using C and OpenGL, in 4096 bytes.
Sochi - 3D Engine for GIS
http://www.youtube.com/watch?v=bNE4WX1v-W8#t=204Developed a cross-platform 3D engine in C/C++ with OpenGL. It was used by Russian DoDF.
Computational Geometry API for Nokia Gate5 GmbH
http://www.youtube.com/watch?v=Yh1eUudkxgcDesigned and developed a computational geometry library for 2D/3D graphics, used in a fork of Nokia Maps.
Autobahn Toolbar
https://www.toolbar.autobahn.db.comImplemented core functionality of the Toolbar, a central UX component used by many trading apps.
Vault
https://github.com/pinebit/vaultA tiny C++ library that manages password-protected files, with a very simple API to use.
Imagine you needed to persist some user-sensitive information in a password-protected file—this little library addresses this need.
Imagine you needed to persist some user-sensitive information in a password-protected file—this little library addresses this need.
React-CR
https://github.com/pinebit/react-crA tiny library for conditional rendering in JSX. The idea here was to express conditions declaratively (JSX style) rather than inject conditional JavaScript code. The library is used in some real projects in production.
The Largest App
https://github.com/pinebit/largestappA desktop application for finding the largest files and folders on your computer. The idea was to build a primer app using Qt5/QML. To make it more useful, I made it search for large files on the computer.
Stack: C++ and Qt5 with QML UI.
Stack: C++ and Qt5 with QML UI.
Jet Pipes
https://github.com/pinebit/JetPipesYet another "pipes screensaver" using Qt3D. Originally this was just a primer on Qt3D usage. Still, later I added "guided extrusion math" algorithms that I built for another project, and eventually, this was converted into this nice application for fun.
Stack: C++, Qt 5, Qt3D.
Stack: C++, Qt 5, Qt3D.
Yet Another Ethereum Brute Force Tool
https://github.com/pinebit/eth-brute-forceA tiny command-line app to find the private key matching the given ETH address.
Every other blockchain engineer implements this exercise, for fun.
If you are really serious about using this tool, then bear in mind the probability of encountering a private key that corresponds to someone else’s Ethereum address is around 1 in 2^256. To cover just 1% of that keyspace, even if we used computing resources that would allow us to generate 100 trillion keys per second, it would take us roughly years. Eventually, your electricity bills and the cost of hardware you used will exceed the benefit of "hacking" someone's address. You've been warned.
Every other blockchain engineer implements this exercise, for fun.
If you are really serious about using this tool, then bear in mind the probability of encountering a private key that corresponds to someone else’s Ethereum address is around 1 in 2^256. To cover just 1% of that keyspace, even if we used computing resources that would allow us to generate 100 trillion keys per second, it would take us roughly years. Eventually, your electricity bills and the cost of hardware you used will exceed the benefit of "hacking" someone's address. You've been warned.
ETH Transactions Listener
https://github.com/pinebit/eth-listenerThis is a simple console application written in Go and using Geth API. The purpose is rather simple: to watch for any transactions for the specified ETH addresses, including smart contracts (tokens).
Stack: Go, Geth
Stack: Go, Geth
Publication
The Missing Article About Qt Multithreading in C++
https://www.toptal.com/qt/qt-multithreading-c-plus-plus
Publication
How to Boot-strap and Create .NET Projects
https://www.toptal.com/dot-net/bootstrap-and-create-dot-net-projects
Publication
Meet Bond, Microsoft Bond - A New Data Serialization Framework
https://www.toptal.com/microsoft/meet-bond-microsoft-bond
Publication
.NET Best Practices and Tips by Toptal Developers
https://www.toptal.com/dot-net/tips-and-practices
Skills
Languages
C, Go, QML, C++, C#, UML, JavaScript, Visual Basic for Applications (VBA), Domain-specific Languages (DSLs), Python 3, SQL, Solidity, C++17
Frameworks
Redux, .NET, Qt, Google Protocol Buffer, Windows Presentation Foundation (WPF), AngularJS, NUnit, ASP.NET Web API, Chromium Embedded Framework (CEF), Qt 5
Libraries/APIs
Protobuf, React Redux, React, OpenGL, OpenSSL, Win32 API, WebRTC, REST APIs, jQuery
Tools
Stash, Jira, ReSharper, Microsoft Visual Studio, Git, Roslyn, CC.NET, SonarQube, CMake, Qmake, Grafana, Pacemaker, JetBrains, Visual Studio, GIS, JSX
Paradigms
Concurrent Programming, Unit Testing, Test-driven Development (TDD), REST, MapReduce, RESTful Development
Platforms
Windows, Blockchain, BlackBerry, Linux, Docker, MacOS, Ethereum, Windows Phone
Other
Cryptography, IPC, WebSockets, APIs, 3D Graphics, Windows Communication Foundation (WCF), Code Contracts, MSYS2, Cryptocurrency, Web3, Ethers.js, Prometheus, Web Services, Chromium, WebAssembly, People Management, Mentorship, Embedded Systems, Qt 3D, Custom Protocols, App UI, Ethereum Smart Contracts, Decentralized Finance (DeFi), Interviewing
Storage
NoSQL, Microsoft SQL Server, SQLite, PostgreSQL, MySQL, RocksDB
Education
1996 - 2002
Specialist Degree in Engineering
Baltic State Technical University - Saint-Petersburg, Russia
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