Yevhenii – Ruby, Ruby on Rails, Vue.js

An application for combining and managing calendars and tasks

• Developed an application from scratch;
• Integrated Google, Apple, and Microsoft calendar APIs;
• Implemented complete application logic;
• Set up cloud hosting, CI/CD pipelines, and monitoring tools;
• Created an in-app chat powered by GPT.

System app

Accomplishments

• Integrated SOAP and REST API of varying complexity;
• Created the core of an app, which works with a big load and heavy requests;
• Was in charge of code refactoring;
• Found and resolved load problems with slow code or DB by using raspy and other tools;
• Was responsible for AWS (deploy, creating new projects, etc.);
• Was in charge of teaching and mentoring Junior developers;
• Created a revenue management system;
• Integration and training of new developers into the team.

Mobile app to manage your finances and loans

• Create back-end architecture;
• Implement new functionality;
• Upgrade old code and clear architecture;
• Deploy/CI/Monitoring etc.;
• Integrate with different providers, such as PLAID, Methodfi, Synctera, Equifax;

System

Accomplishments

• Upgraded rails from 4 to 6 versions;
• Upgraded all dependencies;
• Test coverage;
• Upgraded AWS and deploy process;
• Improved load and performance;
• Added product metrics.

A service for companies that want to create a promo for their product. Customers can send a receipt and get different discounts or money on their mobile accounts.

Accomplishments:

• created admin interface;
• created a web interface;
• created payment system;
• tested admin and customers app.

A service that helped people travel more comfortably. You can book luggage storage before arrival, and the service picks up your luggage at the airport and stores it. When you need it, they can deliver it to your hotel.

Accomplishments:

• helped with finding solutions;
• wrote simple parts of code;
• studied and applied testing;
• was in charge of manual QA;