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OLEKSANDR BIELONOGOV [open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section)

Cherkasy, Ukraine Linkedin
SOFTWARE ENGINEER Git Hub

SUMMARY
Software Engineer with over ten years of experience developing new and innovative products, helping companies to meet and exceed
projected expectations. Possessing good organizational skills, a goal-oriented mindset. Strong problem-solving skills and team player with
excellent collaboration skills.

SKILLS
Ruby On Rails Rollbar, New Relic Teamwork
Node.js Sidekiq, DelayedJob Communication
React/React Native WebSocket Leadership
SQL, MongoDB Data Migration Hardworking
Redis, Elastic Search Rspec, Cucumber, Jest, Wdio Open-minded
REST, GraphQL Redux/RTK Query Attention to details
AWS, Google Cloud JavaScript, TypeScript Time management
Git, Docker, Bash HTML, CSS, SASS / SCSS Scrum / Agile / Sprint

WORK EXPERIENCE

Goji labs
Backend Developer • 2024

Collaborating in the agile development of a custom CMS for rental cars platform using Ruby on Rails
Introducing RESTful api endpoints with complex validation
Engineering booking system with product reservation and returns
Participating in the design meeting and provided solutions to improve customers UX
Taking part in the backend architecture design and database schema
Working close with product team
Improving database queries and reduced joining tables
Simplified development environment by Docker
Created CI integration using github actions
Created automated building swagger documentation

Stack: Ruby on Rails, PostgreSQL, Active Job, Redis, Digital Ocean

The Neat Company
Technical Lead • 2016 - 2024

Led and coordinated a cross-functional team of developers to successfully deliver a major software project
Conducted code reviews and provided feedback to improve code quality
Migrated from monolith to microservices architecture
Introduced data cache to reduce database loading
Migrated applications to Elasticbenstalk
Implemented data update using WebSocked technology
Third party services integrations with complex solutions
Data migration, troubleshoot and resolve software defects and issues, found bottleneck for slow database queries
Production deploy and stability monitoring
Team management

Stack: Ruby on Rails, Node.js, MongoDB, PostgreSQL, Redis, Elastic Search, AWS
Divian
Software Engeener • 2021 - 2023

Developed and supported Web based application
Developed slack-bot to make ability ask questions and display results in real time using internal data knowledge (ChatGPT analog)
API design to achieve UI needs
Refactored core to use OOP principles instead of functional practice
On fly UI data update using WebSocked technology
Created wrapper for DynamoDB interface

Stack: JavaScript, React, Python, Flask, Aurora, DynamoDB, AWS

Consunsus
Software Engeener • 2018-2021

Developed and supported full-stack system that communicated with blockchain and explore transactions
Developed and supported mobile wallet application, added push notifications
Integrated and supported SDK (Golang) to communicate between react native app and blockchain
Designed and maintained API endpoints for web and mobile clients
Code refactor and query improvements
Added ability for electron-based app to have auto-update functionality

Stack: Ruby on Rails, MySQL, JavaScript, React, React Native, AWS

The Neat Company
Full Stack Developer • 2013-2016

Developed and supported Ruby on Rails application
Implemented async expense report generation system
Created service to generate thumbnails from source image/pdf
Third party services integration using OAuth2 flow
API design and improve code quality
Model improvements and query optimisation
Data migration

Stack: Ruby on Rails, Node.js, MongoDB, PostgreSQL, Redis, Elastic Search, AWS

Highre
Full Stack Developer, Team Lead • 2017-2019

Developed and supported Ruby on Rails application
Implemented delayed notifications system
Integrated WebRTC for 1:1 calls video calls, later migrated to Twilio
Designed admin portal for grabbing stats and import data from csv

Stack: Ruby on Rails, PostgreSQL, Redis, Google Cloud

Skydeo
Software Engineer • 2016-2017

Developed a Ruby on Rails application that handled mobile audience
Developed replication mechanism for sync data between Aurora and Redshift
Developed workers to process data from huge csv files and insert to database

Stack: Ruby on Rails, MySQL, Snowflake, Redshift, AWS
 Pickapaw
PHP Developer • 2015-2016

Developed a Ruby on Rails web application
Integrated Stripe payments

Stack: Ruby on Rails, MySQL, jQuery

ArtistSoft
PHP Developer • 2012-2013

Developed and supported PHP application

Stack: PHP5, MySQL, jQuery

EDUCATION
Cherkasy State Technological University
Engeener of medical equipment • 2003–2008

CERTIFICATIONS
Ruby on Rails JavaScript
GeekHub • 2014–2015 GeekHub • 2016-2017