During this role, I worked with various technologies, including:

- Development of the website and its admin panel using Symfony and GraphQL.

- Participation in the development and optimization of a pricing module in an MS SQL–based project. Implemented the logic for generating new product prices based on regional coefficients, city-specific markups, and individual store pricing policies. Worked with stored procedures, triggers, complex SQL queries, and data aggregation mechanisms. Optimized calculations and ensured accurate price recalculation when input parameters changed (region, city, store type, pricing policy).

- Experience working in a support department, where I maintained and improved projects built on different technologies, handled incident investigations, analysed errors, and proposed and implemented technical improvements.

- Worked with Docker: created and optimized Dockerfiles, configured multi-container environments, and automated environment setup for development and production. Configured CI/CD pipelines (build, test, deploy, artifact management).

MLM Marketing Programs Development:

- Developed and maintained marketing programs for an MLM (Multi-Level Marketing) business, including the implementation of bonus calculation logic, referral structures, and reward distribution models.

-Designed and implemented algorithms for commission calculation, partner hierarchies, and performance-based incentives in accordance with business rules.

-Worked closely with stakeholders to translate marketing and compensation plans into scalable technical solutions, ensuring accuracy, transparency, and flexibility of the MLM system.

-Optimized data processing and calculations to support large partner networks and high transaction volumes.

Telegram Bot Development (Laravel):

- Developed a Telegram bot using the Laravel framework that enabled users to book tables in restaurants across different cities in Ukraine and place takeaway food orders.

- Integrated the bot with the Poster API to manage menus, create takeaway orders, and synchronize restaurant data.

- Implemented an administrative panel for moderation and management, allowing administrators to add and manage restaurants, configure working hours, assign and manage Poster API keys per restaurant, and control other operational settings.

- Designed and implemented the business logic for bookings, order processing, and data validation, ensuring reliable interaction between the Telegram bot, backend services, and external APIs.

Real Estate Website Development (Yii2):

- Developed a real estate website using the Yii2 framework, implementing both public-facing functionality and an administrative interface.

-Built features for managing property listings, including creation, editing, categorization, filtering, and search.

- Implemented business logic for handling property data, images, and metadata, as well as validation and access control.

- Developed an admin panel for content and property management, user roles, and system configuration.

- Optimized database queries and application performance to ensure fast loading and scalable operation.

B2B Wholesale Platform Development (Symfony):

- Developed a B2B platform for wholesale meat product sales using the Symfony framework, focused on business clients and distributors.

- Implemented core functionality including product catalog management, pricing logic for wholesale customers, order creation and processing, and customer account management.

- Built and maintained an administrative interface for managing products, prices, orders, clients, and business rules.

- Integrated role-based access control and validation to support different types of B2B users.

- Optimized backend performance and database interactions to ensure reliability, scalability, and efficient processing of large orders.

CRM System Development for Recruitment Company (PHP):

- Developed a CRM system using PHP for a recruitment company specializing in IT talent hiring for multiple IT companies.

- Implemented functionality for managing candidates, vacancies, clients, and recruitment pipelines.

- Integrated Google Calendar API to schedule interviews, synchronize events, and manage recruiter calendars.

- Integrated an SMS notification API to automate candidate and client communications (interview reminders, status updates, notifications).

- Designed business logic to support recruitment workflows, data tracking, and process automation.

- Ensured data consistency, security, and reliable API integrations across the system.