Stanislav – Ruby, Ruby on Rails, React

The product provides monitoring and effective management capabilities of the production flow of manufacturing processes.

At first, it used to be a Rails/StimulusReflex application. Then, they wanted more interactivity with a less complex codebase and rewrote it with Rails/React.js. Then, customer feedback and new requirements arrived, and Elixir, OTP, Phoenix, and LiveView hit the stage. Regarding Stanislav role on the project - there was no place in the codebase where he was not involved.

The web application for in-house use by a law firm (US-based). It was a challenging project, the goal of which was to create (and later extend) a web application for collecting, managing, and visualizing legal data.

• Designed and worked with everything from CSS to Nginx;
• To improve the performance of the most critical background workers, reimplemented them in Rust.

The online platform for teaching an optimal poker strategy using advanced poker training and poker hand charts for every spot. If one wants to master poker with all its nitty-gritty details, odds, and probabilities, then the application is a great place to start.

• Optimized db queries and simplified the backend code base;
• Built a new version of the app's UI.

All-in-one staff rota, timesheet, absence & payroll software.

During a few months he spent there as a freelance contractor, Stanislav was part of a back-end team and mainly worked on extending the API and performing other tasks (under NDA). The toolset was a pretty conventional Rails stack.

The integrated business platform for running a profitable MSP. A mature application with a massive infrastructure and codebase.

The most significant work Stanislav participated in was the grand version upgrade and everything related, such as tests, libs, APIs, changelogs, etc.

Financial data and analytics company providing a free trader platform, emerging manager investment opportunities, and customized software for financial institutions.

Stanislav took part in everything backend-related. The most notable milestones were moving from the monolith architecture to microservices and reworking the analytic tools. Besides that, Stanislav gained some lead experience as he managed a sub-team of a few junior/middle Ruby devs.

Plug & play solution to connect all lab instruments in a single platform. It allows collecting and analyzing instrument data in real-time and manages lab devices remotely.

This one was one of Stan's favorite projects. Let's say you have a chemical lab and want to track results from all of these refrigerators, retorts, centrifuges, or any or all other rocket-science devices at any second from any reachable device. You deal with tons of incoming data, so you need to queue, validate, store, and visualize them. That's what the job was about. Stanistav's primary tools were Ruby, React, RabbitMQ, and Postgres (with specific add-ons)

SaaS service for US-based insurance brokers and carriers. The US insurance market is quite cumbersome from all perspectives. The application helped various parties in the market to nicely play along with.

Imagine many interrelated data entities multiplied by many not-so-straight-forward business rules managed by Ruby On Rails with a pretty React UI. For the first six months, Stanislav was responsible for the React part - building UI, styling it, and making it interactive. During the rest of his employment, he was improving the backend and its performance (primarily, optimized API calls and DB queries that were too much for ActiveRecord's built-in tools).