Ruby on Rails Developer

Project: Volunteer Platform
Description:
A platform that streamlines volunteer coordination by connecting organizations with individuals willing to contribute their time and skills. It provides tools for discovering opportunities, tracking hours, and rewarding contributions.
Responsibilities & Achievements:
- Built a monolithic application with Vue.js frontend and Ruby on Rails backend, ensuring seamless integration and maintainability;
- Designed and implemented a RESTful API for external integrations;
- Configured and optimized Nginx for routing and performance, which reduced average page load time by 30%;
- Integrated OAuth2 authentication with external service to automatically synchronize volunteer hours;
- Developed a gift shop module, which boosted volunteer engagement by 20% through a rewards-based system;
- Leveraged Redis + Sidekiq for background jobs, ensuring stable performance under high load;
- Maintained RSpec test suite with 85%+ coverage, significantly improving code reliability and reducing regressions.

Tech Stack:
Ruby on Rails, Vue.js, PostgreSQL, Redis, Sidekiq, Nginx, OAuth2, Docker, REST API, Bootstrap, RSpec.

Project: E-commerce marketplace
Description:
Market platform was created to bridge the gap between local vendors and customers in the community. It allows small businesses to place their products, and customers to easily browse, buy and arrange delivery or pickup.
Responsibility:
Development of the Ruby on Rails backend using AWS and PostgreSQL;
Created CI/CD pipelines with GitHub Actions, automating testing and deployment, which reduced deployment time by 30%;
Developed responsive frontend with dynamic checkout pages and OAuth-based authentication;
Implementation of web sockets for updating order statuses in real time, which allows users to instantly receive notifications of status changes (confirmation, dispatch, delivery);
Achieved 95% code coverage with automated testing using RSpec and Cypress;
Managed microservices using RabbitMQ for asynchronous, ensuring seamless integration between modules.
Stack:
Ruby on Rails, React, ImmutableJS, Tailwind, Styled Components, Swagger, AWS, PostgreSQL, GitHub Actions, Docker, Docker Compose, WebSockets, Rspec, Cypress, RabbitMQ.

Project: Inventory tracking app
Description: The inventory management system implemented for Stada is aimed at improving inventory accuracy, optimizing warehouse space and operations, and enhancing supply chain efficiency. It provides comprehensive management of warehouse activities, tracking inventory levels, facilitating efficient product movement, and ensuring order fulfillment accuracy.
Responsibility:
Designed and implemented server-side logic using Ruby on Rails and RESTful APIs;
Wrote unit and integration tests using RSpec, ensuring code reliability;
Containerized the application using Docker and Docker Compose, simplifying deployment processes;
Optimized database queries and implemented Redis caching, improving application performance;
Implemented Action Cable for real-time updates, enhancing user experience.
Stack:
Ruby on Rails, PostgreSQL, GraphQL, Selenium, Sidekiq, Redis, Rspec, Capybara, Websockets, Docker, Docker Compose.

Project: MedReminder
Description: MedReminder designed to remind patients about taking medications, which helps them follow their prescribed therapy regimen. The system provides users with the ability to set individual reminders, track medication intake and receive notifications.
Responsibility:
Built the backend in Ruby on Rails and developed RESTful APIs;
Integrated with user calendars for seamless reminder scheduling;
Integrated push notifications via Amazon SNS, increasing user engagement by 30%.
Stack:
Ruby on Rails, MongoDB, PostgreSQL, RSpec, Selenium, Swagger, Amazon SNS.

Project: Scian E-commerce
Description:
This project is an E–commerce solution created to integrate the Scian medical technology company with various trading platforms. It provides effective interaction with Alibaba.
Responsibility:
Developed the server-side in Ruby on Rails and created REST APIs for efficient data exchange.
Optimized application performance through refactoring and efficient database querying.
Integrated with Alibaba’s trading platform, enabling seamless product listing and sales.
Implemented the ELK stack for logging and monitoring, reducing issue resolution time by 40%.
Stack:
Ruby on Rails, PostgreSQL, Kafka, ELK(ElasticSearch, Logstash, Kibana), Sidekiq, Redis.