Виктор Койда

- Worked on products across HR (ATS), B2B fintech, and a high-load iGaming project, focusing on core business flows and release stability.
- Migrated the billing system without involving users and with zero business downtime, keeping critical processes running.
- Switched the messaging and calls provider with no negative impact on user experience and careful production risk control.
- Implemented

- Supported and developed news portals and related services, including an in-house CMS for managing content and portal configuration.
- Built and improved functionality, focusing on stability and predictable system behavior.
- Integrated external APIs (financial services, payment gateways, etc.), ensuring correct data processing and error handling.
- Fixed multiple critical issues affecting portal

- Developed and supported multiple products and services: a photo studio rental website (and location clones), an access control service, a CPA forum, a course management product (website + Chrome Extension), and a set of browser extensions and CRM tools for working with social platform business-account data.
- Designed architecture and delivered new modules using PHP (Laravel, Yii/Yii2, Symfony,

- Supported and improved a pizzeria management website built with PHP/Laravel/October CMS, focusing on stable core business flows.
- Migrated the project to a new server and set up the environment to ensure reliable application and service operation.
- Integrated Stripe payments and stabilized the payment flow in production.
- Fixed issues in the checkout and payment processes, reducing failures i

- Built an MVP for an auto parts e-commerce store using PHP/Laravel/MySQL, including core catalog, cart, and checkout business logic.
- Integrated payment modules and SMS/email notifications for key events (order, payment, status updates), with proper error handling.
- Added simple unit tests for main checkout scenarios to reduce regression risk during further development.
- Delivered small commer