Selected Work & Case Studies
Software, built for the real world.
A curated portfolio of multi-tenant SaaS platforms, microservice architectures, autonomous AI workflows, and practical full-stack applications engineered for real-world production reliability.
Selected Case Studies
Projects I Worked On
Multi-Branch POS Platform
A point-of-sale platform developed for businesses in Croatia, enabling multi-branch store operations, custom tax configurations, and fiscal compliance workflows.
Year: 2025
Role: Full-Stack Software Engineer
AI Lead Gen Automation
An automated lead-generation workflow that collects business prospects, audits public websites for technical deficiencies, and synthesizes personalized outreach drafts using LLM APIs.
Year: 2025
Role: Backend & AI Engineer
Equipment Tracking System
A tool and equipment tracking system for companies renting heavy machinery to construction sites, featuring QR/NFC identification, map integration, and deployment duration logs.
Year: 2024
Role: Full-Stack Engineer
PDFDex
A modular web suite containing approximately 25 PDF processing tools, handling file merging, splitting, compression, conversion, and text extraction with scalable AWS S3 storage.
Year: 2024
Role: Creator & Full-Stack Engineer
Complete Archive & Specifications
Project Index
Multi-Branch POS & Fiscalization Platform
SaaS & SystemsFull-Stack Software Engineer
A point-of-sale platform developed for businesses in Croatia, enabling multi-branch store operations, custom tax configurations, and fiscal compliance workflows.
Delivered multi-branch inventory tracking, custom register setups, and compliant fiscal receipt processing.
AI-Powered Lead Generation & Website Audit Automation
AI & AutomationBackend & AI Engineer
An automated lead-generation workflow that collects business prospects, audits public websites for technical deficiencies, and synthesizes personalized outreach drafts using LLM APIs.
Replaced manual prospecting with an automated multi-step audit pipeline and structured email generation.
Equipment & Rental Tracking System
SaaS & SystemsFull-Stack Engineer
A tool and equipment tracking system for companies renting heavy machinery to construction sites, featuring QR/NFC identification, map integration, and deployment duration logs.
Provided operational visibility into equipment site assignments, scan-based check-ins, and accurate rental duration records.
PDFDex — Multi-Utility PDF Processing Suite
Developer & Web ToolsCreator & Full-Stack Engineer
A modular web suite containing approximately 25 PDF processing tools, handling file merging, splitting, compression, conversion, and text extraction with scalable AWS S3 storage.
Engineered diverse document processing pipelines combining Node.js stream handling and Python PDF libraries.
Quiz & Subscription Learning Platform
SaaS & SystemsFull-Stack Developer
An online quiz and practice platform where students answer categorized practice questions, monitor progress via a student dashboard, and access premium plans through Stripe.
Built self-paced quiz workflows, automated subscription billing, and real-time student performance dashboards.
Study Abroad Application Platform
SaaS & SystemsFull-Stack Engineer
A platform developed for a study-abroad consultancy in Dubai, enabling students to explore universities and programs online while consultancy agents manage admission workflows.
Streamlined international university exploration, multi-step application submission, and secure payment processing.
StressIQ — Machine Learning Stress Assessment
AI & AutomationMachine Learning & Full-Stack Developer
A machine-learning web application trained on structured questionnaire datasets to provide estimated, non-clinical stress assessments along with practical lifestyle recommendations.
Trained a classification model on behavioral survey data and integrated it into an interactive assessment flow.
BrainPilot — AI Social Media Content Generator
AI & AutomationCreator & Full-Stack Engineer
An AI content creation tool designed to generate posts tailored for multiple social media platforms, formatting copy to match platform-specific styles and constraints.
Built structured prompt workflows that adapt voice, length, and formatting across multiple social networks.
Keylenz — LLM API Key & Request Inspector
Developer & Web ToolsCreator & Full-Stack Engineer
A developer tool for testing LLM API keys. Users enter a key, execute a test script, and inspect the response to verify that the key and API request are functioning.
Created a secure, developer-focused environment for diagnosing API key validity and payload configurations.
ZainGraphy — Exterior Painting Portfolio & Showcase
Web & InteractiveFrontend Designer & Developer
A company portfolio website for a painting business specializing primarily in exterior painting, featuring service showcases and straightforward contact channels.
Delivered a clean, high-contrast commercial portfolio that presents painting services and project photography clearly.
Pingio — Browser-Based Network Speed Tester
Developer & Web ToolsCreator & Frontend Engineer
A browser-based internet speed-testing tool that measures connection performance, including download and upload speeds, displaying clear results in Mbps.
Built lightweight bandwidth measurement algorithms running entirely within standard browser Web APIs.
SleeplyHub — Sleep Cycle & Wake-Up Calculator
Developer & Web ToolsCreator & Frontend Developer
A sleep calculator that helps users explore suggested sleep and wake-up times based on natural 90-minute sleep cycles through a responsive browser interface.
Created an intuitive, responsive calculator with zero friction and instant schedule recommendations.
PlayFuze — Casual Browser Mini-Games Collection
Web & InteractiveCreator & Game Developer
A browser-based collection of casual mini-games designed for short, accessible gameplay sessions and engaging mental challenges directly within the browser.
Built responsive 2D canvas game loops and state management for immediate browser entertainment.
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