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Summary

Expertise

Project Highlights

Education

Agency

VL

English:

Advanced

Vadim L.

vetted by Youteam

Vetted by YouTeam

Canada

UTC -05:00

America/Toronto

English:

Advanced

Web Development | Ruby on Rails

Are you overwhelmed by complex and inefficient coding processes that hinder your web development projects? Allow me to alleviate your pain and streamline your development workflow. As a Senior Software Engineer with 7 years of experience, I specialize in simplifying and optimising coding practices. I understand the frustration of dealing with tangled codebases, slow performance, and maintenance headaches. By utilizing my expertise in Ruby on Rails and VueJS, I can provide elegant and efficient solutions that enhance productivity and scalability MY ACHIEVEMENTS: - Successfully facilitated the growth of the platform user base by over 850,000 users, resulting in a significant expansion of the company's reach and market presence - Implemented strategies that led to a remarkable 2.7x increase in trial clients and a 2.1x growth in paying clients, contributing to substantial revenue growth and customer acquisition - Played a pivotal role in securing £2.25 million in seed funding through effective presentations, showcasing the value and potential of the software solution, and convincing investors of its viability and market demand - Streamlined daily operations for the accounting team, resulting in a 31% reduction in the timeframe required to complete their tasks. This optimization allowed for increased productivity, improved efficiency, and cost savings for the company - Successfully led the development and launch of a mission-critical web application using Ruby on Rails, resulting in a 50% reduction in response time and a 30% increase in overall system performance. This achievement not only improved user satisfaction but also optimized server utilization, resulting in cost savings of $50,000 per year for the company REVIEWS: "Working with Gotoinc was an absolute pleasure. Their expertise in Ruby on Rails was evident throughout the project. Not only did they meet the deadlines, but they also provided valuable insights and recommendations to enhance the overall user experience. Their attention to detail, clean coding practices, and proactive communication made the collaboration seamless. We highly recommend Gotoinc for any web development project" Simon, CTO Healthcare project SKILLS: Ruby, Ruby on Rails, Sidekiq, RSpec, Capybara, Rubocop, Capistrano, Unicorn, Puma, Ruby gems JavaScript: JavaScript, CoffeeScript, TypeScript, jQuery, VueJs HTML/CSS: HTML5, HAML, ERB, CSS3, SCSS, Bootstrap Databases: PostgreSQL, MySQL, SQLite3, Redis, MongoDB, ElasticSearch Web servers: Nginx, Apache Cloud platforms: Heroku, DigitalOcean, AWS S3 VCS: Git (Github, GitLab, Bitbucket) Development approaches: TDD, BDD, Agile, Scrum Project tracking and management software: Jira, Notion, Monday, Trello, PivotalTracker, Gitlab Highlighted Skills: Ruby on Rails, JavaScript (VueJs, jQuery), HTML5/CSS3 (SCSS, Bootstrap), Databases (PostgreSQL, MySQL, SQLite3, Redis, MongoDB, ElasticSearch), Web Servers (Nginx, Apache), Cloud Platforms (Heroku, DigitalOcean, AWS S3), Version Control (Git, Github, GitLab, Bitbucket), Development Approaches (TDD, BDD, Agile, Scrum), Project Tracking and Management Last updated: November 25, 2024

Want to hire this engineer?

Check if Vadim is available

Expertise

Years of commercial development experience

8 years of experience

Core technologies

Ruby 8 years
Ruby on Rails 8 years
PostgreSQL 6 years
JavaScript 5 years
Vue.js 4 years
Elasticsearch 5 years

Other technologies

CoffeeScript
Heroku
jQuery
MySQL
Git
JSON
Redis
RESTful API
Sidekiq

Project Highlights

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Senior Software Engineer

Communication platform for Healthcare

Hospitals and Health Care in the USA

The platform connects patients and doctors/hospitals and gives them an opportunity to communicate via internal chat (including configurable chatbots), exchange documents, schedule visits, and virtual calls, create and fill forms and assessments, and many other features.

Responsibilities & achievements

- Porting the legacy app to the new architecture; - Introducing new API endpoints with protobuf; - Covering code with unit tests (Rspec); - Bug fixing (Rails + Vue);

MySQL
Ruby on Rails
Git
RSpec
Sidekiq
Vue.js
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Senior Software Engineer

Traffic exchange platform

Traffic company from Estonia

The platform that allows website owners to buy traffic for their websites and sell traffic from them.

Responsibilities & achievements

- Introduced new product (stickers and banners) FE + BE + AA; - Introduced new API endpoints; - ElasticSearch queries optimization; - Unit tests coverage (Rspec); - Bug fixes;

jQuery
MongoDB
Ruby on Rails
Elasticsearch
Redis
RSpec
Sidekiq
Docker
SCSS
ActiveAdmin
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Senior Software Engineer

Visitdays

Educational platform from the USA

The platform that helps colleges and universities meet prospective students domestically and internationally (managing faculties, teachers and students, scheduling virtual and in-person events, and integrations with multiple services).

Responsibilities & achievements

- Introducing new API endpoints for FE SPAs; - Implemented SSO via different apps; - Database structure and query optimization; - SMS and mailers implementation; - Check-in with QR codes; - Unit tests (Rspec);

Ember.js
Heroku
PostgreSQL
Ruby on Rails
Git
JSON
Redis
RSpec
Sidekiq
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Senior Software Engineer

Pixie

The practice management software for accounting firms

Responsibilities & achievements

- Scheduled and delayed jobs implementation; - CVS data export/import; - Dynamic mailer templates with placeholders; - Led the development team;

AWS
PostgreSQL
Ruby on Rails
Redis
RSpec
Sidekiq
Vue.js
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Senior Software Engineer

GeniusU

GeniusU connects entrepreneurs from all over the world. It is a combination of a social network and an educational platform that has a bunch of psychological tests and training courses. Helps to create groups and find events and training sessions for entrepreneurs around the world.

Responsibilities & achievements

- Salesforce CRM integration; - Stripe and Braintree payment systems integration; - Resolving high latency requests; - Database structure and queries optimizations; - Mentoring team members.

CoffeeScript
Heroku
jQuery
PostgreSQL
Ruby on Rails
Salesforce
Git
HAML
Redis
RSpec
Sidekiq
SCSS
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Full-stack developer

System for creating surveys

System for creating surveys where admin can create surveys with competitive steps relations. The system generates reports with charts and calculations for users and admin after finishing the survey.

Responsibilities & achievements

- Design the app architecture; - Design the DB architecture; - Setting up Heroku deploys and CI/CD; - Implementing new functionality; - Unit and acceptance tests (Rspec + Capybara).

Heroku
jQuery
PostgreSQL
Ruby
Git
HAML
Redis
RSpec
Capybara
Sidekiq
SCSS

Education

Higher education in Computer Science

Agency

Full-cycle web app developmet agency #386

10-50

GMT+2

Ukraine, Poland, Germany, Spain, Greece

Core Expertise

Agile
Heroku
PostgreSQL
React.js
Ruby
Ruby on Rails
Selenium
UI
UX
Automated Testing
Cucumber
Git
JMeter
Performance Testing
Scrum
Illustration
Manual testing
Waterfall
Vue.js
Cypress
Business Analysis
Figma

Industries

Education & Science, E-Commerce & Retail, Banking & Finance, Construction & Real estate, Advertising & Marketing, Travel & Tourism, Healthcare & Medicine, Accounting & Auditing

Want to hire this engineer?

Check if Vadim is available