Andrei Smirnov

Invented, 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.

Participated 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.

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

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

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

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

A 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.

A 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.

A 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.

Yet 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.

A 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.

This 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

Best practices packaged in one template.

Many times, I've been asked to bootstrap a new Go project. Typically the ask was to create a microservice skeleton that uses battle-tested packages with a good project structure that is easy to extend and works out of the box.

I remember I created a bunch of projects like that until I realized I should make my own "boilerplate" project that I could easily use as a template on GitHub.

This is why the project was born.

I have conducted over 500 coding interviews over the last ten years for many companies, from small startups to IT giants. I learned a lot about how to ace and how to fail a coding interview. I've been on the other side throughout the last twenty years of my software engineering career. In this article, I will tell you what to pay attention to and how to ace a technical interview. At the end of the article, I will give you a complete "take-away" checklist for your preparation.