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Stanislav – Ruby, Ruby on Rails, React, experts in Lemon.io

Stanislav

From Ukraine (GMT+3)

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Full-stack Web DeveloperSenior
Hire developer
11 years of commercial experience
Analytics
Chemistry
E-commerce
E-learning
Fintech
Insurance
IoT
Job and career services
Legal tech
Management
Manufacturing
Sports
Trade
CRM
Enterprise software
ERP
HRMS
Platforms
SaaS
Lemon.io stats
9
projects done
3017
hours worked
Open
to new offers

Stanislav – Ruby, Ruby on Rails, React

Meet Stanislav, an experienced Senior Full-Stack Developer with a decade of expertise. He excels in solving complex challenges with a diverse range of technologies like Ruby, Elixir, JavaScript, and Rust. Stanislav's portfolio includes impactful contributions to ERP/CRM systems, financial and legal services, e-commerce, and beyond. Whether collaborating with teams or working solo, he continuously hones both his technical prowess and leadership abilities, making him a standout professional in the field.

Main technologies
Ruby
7 years
Ruby on Rails
7 years
React
5 years
JavaScript
7 years
Tailwind CSS
2 years
Elixir
2 years
Phoenix
2 years
Additional skills
PostgreSQL
Cypress
AWS
Rust
RSpec
SQL
Twilio API
Heroku
Bootstrap
jQuery
MySQL
R
RabbitMQ
REST API
API testing
Product design
Next.js
Python
GraphQL
Shopify
OAuth
Ready to start
ASAP
Direct hire
Potentially possible

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Experience Highlights

Full-stack Developer
Apr 2022 - Ongoing2 years 5 months
Project Overview

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

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Responsibilities:

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.

Project Tech stack:
Elixir
Phoenix
Ruby on Rails
React
StimulusReflex
Full-stack Developer
Apr 2019 - Jul 20234 years 3 months
Project Overview

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.

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Responsibilities:
  • Designed and worked with everything from CSS to Nginx;
  • To improve the performance of the most critical background workers, reimplemented them in Rust.
Project Tech stack:
Rust
Ruby on Rails
Tailwind CSS
Stimulus
PostgreSQL
Product design
StimulusReflex
Senior Full-stack Developer
Sep 2021 - Apr 20231 year 7 months
Project Overview

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.

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Responsibilities:
  • Optimized db queries and simplified the backend code base;
  • Built a new version of the app's UI.
Project Tech stack:
Ruby on Rails
PostgreSQL
React
React Query
Tailwind CSS
Stimulus
StimulusReflex
Senior Back-end Developer
Apr 2022 - Oct 20226 months
Project Overview

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

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Responsibilities:

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.

Project Tech stack:
Ruby on Rails
PostgreSQL
DDD
Senior Back-end Developer
May 2020 - Nov 20211 year 5 months
Project Overview

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

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Responsibilities:

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

Project Tech stack:
Ruby on Rails
PostgreSQL
Heroku
Elixir
Phoenix
Senior Back-end Developer
Oct 2018 - May 20201 year 6 months
Project Overview

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

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Responsibilities:

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.

Project Tech stack:
Ruby on Rails
MySQL
R
API testing
REST API
Python
Senior Back-end Developer
Oct 2016 - Oct 20193 years
Project Overview

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.

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Responsibilities:

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)

Project Tech stack:
Ruby on Rails
PostgreSQL
React
RabbitMQ
JSON API
REST API
Elixir
Senior Back-end Developer
Jan 2017 - Aug 20181 year 6 months
Project Overview

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.

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Responsibilities:

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).

Project Tech stack:
Ruby on Rails
PostgreSQL
React
REST API

Languages

English
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