Oleh Oliinykov
Cherkasy
Summary
Accomplished senior full-stack engineer with a specialization in Ruby on Rails and React, dedicated to developing solutions that elevate performance and user engagement. Expertise in software development prioritizing quality assurance and continuous improvement. Demonstrated ability in project management and collaboration fosters organizational growth.
Overview
8
8
years of professional experience
Work History
Senior Full-Stack Engineer
Tradespace
San Francisco
03.2021 - Current
- Contributed to early-stage product architecture and developed frontend foundation.
- Designed and built reusable component system for frontend structure.
- Led major refactoring initiatives to enhance performance and maintainability.
- Migrated REST-based flows to GraphQL for increased efficiency.
- Implemented complex multi-step flows, including idea and disclosure steppers.
- Developed AI-driven generation workflows utilizing asynchronous processing logic.
- Conducted technical interviews to assess frontend candidates.
- Onboarded and mentored new engineers to ensure project success.
Full Stack, Ruby On Rails Developer
Maxwell
Denver
01.2020 - 03.2021
- Developed digital mortgage platform supporting hundreds of lending institutions nationwide.
- Led architecture and development of microservices processing thousands of loans with seamless integration.
- Implemented Stripe API for efficient payment processing across multiple app microservices.
- Created and maintained dynamic web applications using Ruby on Rails to enhance user engagement.
- Integrated third-party services to streamline processes and improve user experience.
- Positioned Maxwell's platform as a foundational solution through innovative feature development.
- Wrote clean, maintainable code following industry standards including test-driven development.
- Utilized technologies such as Ruby on Rails, React, Redux, PostgreSQL, and microservices.
Full Stack, Ruby On Rails Developer
SewSewYou
Manila
05.2019 - 01.2020
- Shaped digital infrastructure for top fashion collaboration platform, enhancing scalability and performance.
- Developed extensive frontend components to elevate user interface aesthetics and usability.
- Integrated essential business tools such as Xero and DHL Express, optimizing logistics and financial operations.
- Empowered influencers and celebrities through innovative fashion collaboration, facilitating sustainable clothing line creation.
Full Stack, Ruby On Rails Developer
CabLook
Cherkasy
07.2018 - 01.2020
- Transformed urban transportation in Cherkasy by developing groundbreaking electric taxi service CabLook.
- Led development of code architecture and user interface, utilizing Ruby on Rails and event sourcing.
- Implemented Android WebView interface with Firebase Cloud Messaging for real-time communication.
- Enhanced customer experience and operational efficiency for pioneering electric taxi service.
- Utilized technologies including Ruby on Rails, React (Preact), PostgreSQL, Sidekiq, RSpec, and Java.
Full Stack, Ruby On Rails Developer
FixPal
Phoenix
11.2018 - 05.2019
- Designed and implemented core backend functionalities to ensure seamless user experiences and optimize database management for increased reliability.
- Spearheaded integration of Stripe API for secure payment processing and facilitated real-time chat feature implementation.
- Developed dynamic social network connecting consumers with service providers, enhancing user engagement and service accessibility.
- Streamlined service fulfillment and order management processes for Fixpal, improving user interaction within social network.
- Created responsive websites optimized for mobile and desktop platforms using Ruby on Rails.
- Utilized technologies including Ruby on Rails, CoffeeScript, jQuery, PostgreSQL, Slim, SASS, RSpec, and Stripe API.
Education
Master - Computer Science
Cherkasy State Technological University
Cherkasy, Ukraine01.2019
Skills
- Ruby
- Ruby on Rails
- JavaScript
- React
- Redux
- MobX
- GraphQL
- SQL
- AWS
- Docker
- Kubernetes
- Heroku
- ElasticSearch
- Jest
- RSpec
- Test-driven development
- Domain-driven development
- TanStack Query
- REST API
- SOAP and restful web services
- HTML
- CSS
- SASS
- Styled Components
- Bootstrap
- Firebase
- Web development
- Sidekiq
- RubyGems
- Slim
Websites
Technical Skills
Ruby, Ruby on Rails, SQL, JS, React, HTML/CSS, Redux, MobX, Styled Components, Jest, JSON API, GraphQL, Test Driven Development, Domain Driven Development, TanStack Query, Sidekiq, RubyGems, RSpec, AWS, Docker, Kubernetes, Heroku, ElasticSearch, Bootstrap, HTML, CSS, Slim, SASS, JavaScript, Android Development, Java, REST API, Firebase, Robots Framework
Timeline
Senior Full-Stack Engineer
Tradespace
03.2021 - Current
Full Stack, Ruby On Rails Developer
Maxwell
01.2020 - 03.2021
Full Stack, Ruby On Rails Developer
SewSewYou
05.2019 - 01.2020
Full Stack, Ruby On Rails Developer
FixPal
11.2018 - 05.2019
Full Stack, Ruby On Rails Developer
CabLook
07.2018 - 01.2020
Master - Computer Science
Cherkasy State Technological University