Olha

Olga Tytarenko

Full-stack Software Engineer

Summary of Qualifications

Software Engineer with 5+ years of commercial experience building scalable web applications and distributed systems. Specialized in Ruby on Rails backend development, REST/GraphQL API design, and modern frontend frameworks including React and Vue.js.

Skills
Programming Languages/Technologies
• Ruby
• JavaScript
• HTML/CSS
• SQL

RDBMS
• MySQL
• PostgreSQL

Methodologies
• Agile, Scrum, SAFE
• Pair Programming
• Behavior Driven Development
• Kanban

Operating Systems
• Linux
• macOS
• IOS
• Android

Frameworks/Libraries
• RoR
• Laravel
• VUE3/jQuery/React
• SCSS/Tailwind
• GraphQl
• Hotwire

Application/Web Servers
• AWS
• Nginx

Development Tools
• Visual Studio Code
• Sequel Ace
• Postman

Virtualization Tools
• Docker
• Jenkins
• Cloudbees

Experience

Healthcare Platform for Ambulatory Surgery Centers

Project Description
Development of a cloud-based healthcare platform for Ambulatory Surgery Centers (ASC) used to manage the full surgical workflow — including scheduling, patient records, clinical documentation, billing, and analytics.
The system provides healthcare providers with tools for surgery scheduling, electronic charting, financial workflows, patient communication, and operational reporting within a unified platform.

Customer
US company

Involvement Duration
20 months

Project Role
Full Stack Developer

Responsibilities
• Designed and implemented backend features using Ruby on Rails
• Built and maintained RESTful APIs
• Implemented API integrations with third-party services
• Developed React-based frontend components
• Designed and optimized PostgreSQL database schemas
• Implemented background job processing and Rake tasks for data processing and reporting
• Participated in system performance optimization
• Contributed to microservices-based architecture discussions
• Supported production systems, investigated incidents, and delivered hotfixes
• Maintained test coverage and supported production deployments

Project Team Size
8-15 team members

Tools & Technologies
Ruby on Rails, React.js, PostgreSQL, REST API, Tailwind, Docker, AWS

Pro bono educational Application

Project Description
Parents can find school courses, and clubs for their children—and also communicate with each other to learn more about various formats of school and alternative education. Additionally, representatives of educational institutions have the opportunity to talk about their innovative approaches and achievements or to find talented teachers.

Customer
UA

Involvement Duration
10 months (part time)

Project Role
Ruby on Rails Developer

Responsibilities
• Requirements analysis and clarification;
• Code development
• Prioritization, and distribution of tasks
• Unit testing
• SEO optimization

Project Team Size
2 - 6 team members

Tools & Technologies
Rails 6/7, RSpec, TailwindCSS, Bootstrap, Hotwire, Trello, Rubocop

Development of the website

Project Description
Development of the new website that aimed at users who want to have access to useful and up-to-date information. The main goal is to provide an opportunity to quickly search for the necessary data and also have a modern and convenient design, including needs of people with disabilities.

Customer
UA governmental organization

Involvement Duration
12 months

Project Role
Frontend Developer

Responsibilities
• Requirements analysis and clarification;
• Code development
• Estimation, prioritization, and distribution of tasks
• Unit testing

Project Team Size
5-12 team members

Tools & Technologies
VueJS 3, Tailwind, TypeScript, Eslint, Scss

Health Care Application

Project Description
The project is a leading virtual healthcare platform, empowering individuals to access high-quality care anytime and anywhere. The project offers a range of services, including primary care, mental health, condition management, and specialty & wellness care. The platform is recognized for its member satisfaction and its transformative approach to healthcare, ensuring that care is accessible, convenient, and comprehensive.

Customer
US company

Involvement Duration
26 months

Project Role
Full Stack Developer

Responsibilities
• Requirements analysis and clarification;
• Estimation.
• Code development;
• Unit testing;
• Product support and documentation maintenance.

Project Team Size
5-12 team members

Tools & Technologies
Ruby on Rails, React.JS, Tailwind, Azure, AWS, Jenkins, Cloudbees, GraphQl, Scrum, SAFE.

Platform for Education

Project Description
The parent – teacher social media app that involves every family to benefit students. App for manage student data, information for class or entire school.
Front end part of project made in React js.

Customer
US company

Involvement Duration
12 months

Project Role
Frontend Developer

Responsibilities
• Requirements analysis and clarification;
• Code development
• Estimation, prioritization, and distribution of tasks
• Unit testing

Project Team Size
3-4 team members

Tools & Technologies
Laravel, React Js, SCSS, PHP, JQuery, Kanban

Education

Master Degree
Uzhgorod National University
Faculty of Cybernetics and Mathemathics
Graduated in 2014