My Projects

Real-world solutions built with data, code and creative thinking.

Featured Projects

Systems, dashboards and analyses I've designed and delivered from scratch.

Prestiage Medical Laboratory

A full-stack PHP and MySQL web application for Prestige Medical Laboratory that simplifies clinical workflows?managing patient records, test requests, results downloads, and billing within a secure, user-friendly portal.

Website Lab Prestige
PHP

POS & Inventory Management System

A complete Point-of-Sale application built with MS Access for small and medium businesses. Features real-time stock tracking, purchase orders, supplier management, sales reporting and low-stock alerts.

MS Access SQL VBA Database Design CRUD
SQL

MEDICOM ECOMMERCE WEBSITE

Medicom eCommerce platform for health and wellness products, offering medical supplies, personal care items, and wellness solutions with a seamless, user-friendly interface. Focused on quality and customer satisfaction, it provides secure payments and detailed product descriptions for a convenient shopping experience.

PHP HTML CSS JS MYSQL
PHP

Laboratory Management System

Full-stack PHP & MySQL system for medical laboratories managing patient demographics, test requests, results, reagent inventory, billing and report generation with role-based access control.

PHP MySQL HTML/CSS RBAC Healthcare
PHP

Sales Analytics Dashboard

Interactive Power BI dashboard delivering daily, monthly and annual KPIs, top-selling product analysis, regional heatmaps, YoY trends and integrated DAX forecasting.

Power BI DAX SQL KPIs Business Intelligence
Power BI

Employee Satisfaction Analysis

End-to-end HR analytics project using Python (Pandas, Matplotlib, Seaborn) and SPSS to identify key drivers of employee satisfaction and present data-backed HR policy recommendations.

Python SPSS HR Analytics Statistics Seaborn
Python

Time Series Forecasting ? Revenue

R-based ARIMA/SARIMA forecasting model applied to retail revenue data. Includes decomposition, stationarity tests, ACF/PACF analysis and 12-month forecast with confidence intervals.

R Time Series ARIMA Forecasting ggplot2
R

AI Prompt Library & Automation Toolkit

A curated PHP web app that organises, tests and deploys prompts for GPT-4 / Claude via the OpenAI and Anthropic APIs. Supports prompt chaining, variable interpolation and output logging.

PHP OpenAI API Prompt Engineering LLMs Automation
PHP

Student Performance Analytics

Data pipeline and Power BI report tracking student grades, attendance patterns and subject performance across multiple schools, helping management identify at-risk learners early.

Power BI Python CSV Pipeline Education Analytics
Python

Pharmacy Inventory System

PHP & MySQL drug inventory system with expiry-date alerts, reorder-level notifications, GRN/invoice generation and a dashboard showing fast-moving vs. slow-moving stock.

PHP MySQL Inventory Healthcare Dashboard
PHP

GitHub Repositories

Live repos pulled from github.com/zhanyzhaks

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zhanyzhaks

Config files for my GitHub profile.

config github-config
Other
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nys-trafic-accident-analysis

No description provided.

Other
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Sales_Dashboard

No description provided.

Other
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portfolio

No description provided.

Other
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us-election-poll-2024

US Presidential Election Poll, 2024 — Data Analysis & Visualization

Other
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Bank-Loan-Analysis

No description provided.

Other
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