Featured Projects
Quilyn — Certification Exam Prep
A free, offline-capable study app for IT certification exams — Pega (PCBA, PCSA) and Tricentis Tosca (AS1, AS2, API). Structured study guides, practice quizzes, timed mock exams, and spaced-repetition review. Built with zero dependencies and installable as a PWA.
PathForge — Career Intelligence Platform
An AI-powered career intelligence platform that decodes a professional's “Career DNA” — matching skills, trajectory, and ambitions to real opportunities. Built with Next.js 15, FastAPI, and a pgvector semantic engine powered by Claude and Voyage AI.
Devran AI Kit — Trust-Grade AI Framework
An open-source, zero-dependency Trust-Grade AI development framework that turns any AI-powered IDE into a virtual engineering team — 26 agents, 44 skills, 25 workflows, and 15 governance rules behind one command.
DeelMarkt — Trust-First P2P Marketplace
A trust-first Dutch peer-to-peer marketplace — a modern alternative to Marktplaats — with escrow payments, verified users, and secure shipping. Built with Flutter, Supabase, and Mollie, with GDPR/DSA/PSD2 compliance by design.
QASmartTestLab
A Java 17 test automation framework on Selenium 4 and Cucumber 7: thread-safe parallel scenarios, local or remote Grid runs, and HTML, JSON and JUnit reports from every run.
Playwright Testing Suite
Comprehensive Playwright test automation suite demonstrating UI, API, and visual testing capabilities with Page Object Model, cross-browser testing, and advanced debugging.
Social Share Image Generator
Professional social media image generator with intelligent adaptive layouts. Features 5 premium templates, 6 visual effects, and instant presets for LinkedIn, Twitter, Instagram, YouTube & Stories.
TIP Test Center (Dovetail - ING)
TTC is a specialized framework that automates transactional testing in the Dovetail system, a Fiserv payment platform that handles real-time payment processing.
Hospital Portal Testing - Medunna
Led the quality assurance strategy for a comprehensive hospital management portal, ensuring data privacy and system reliability across UI, API, and DB layers.
E-commerce Sales Optimization
Spearheaded B2C marketing and operational excellence on European marketplaces, optimizing 10k+ SKUs for visibility and revenue growth.
BeSync — Social Synchronization Protocol
A Social Synchronization Protocol creating meaningful connections through The Focus Pulse, Anti-Dopamine Engineering, and Privacy-First design. Powered by a Trust-Grade AI Platform with multi-agent cognitive architecture.
AegisQA — AI-Driven Full Stack Test Automation
A full-stack test automation platform in progress: Playwright UI tests and REST Assured API tests against a banking demo app in Docker, in one monorepo. Database validation, AI-assisted test generation and CI/CD are next on the roadmap.
Quilyn — Certification Exam Prep
Quilyn — Certification Exam Prep
Overview
Quilyn is a dependency-free study platform I built to prepare for Pega and Tricentis Tosca certifications, then open-sourced so other learners revising the same exams can benefit. It spans 5 learning tracks and 100+ modules, each with concept cards, worked examples, exam-pitfall warnings, and a practice quiz. The app is written in vanilla JavaScript with a reactive ES6 Proxy state store, a hash-based SPA router, and content authored entirely as JSON — new modules render automatically with no code changes. It ships as an installable PWA with a service worker for full offline use, a Leitner 5-box spaced-repetition (SRS) engine for flashcard review, full timed mock exams with per-domain breakdowns, global search across every module, keyboard-driven quizzes, a study-activity heatmap, and JSON progress backup/restore across devices. No account, no tracking — all progress stays in the browser.
5 Tracks · 100+ Modules
Spaced-Repetition (Leitner 5-Box) Review
Timed Mock Exams with Domain Breakdown
Offline-First PWA · Zero Dependencies
Challenge & Solution
The Challenge
Certification candidates juggle scattered PDFs, videos, and quizzes with no unified, offline way to study, self-test, and track retention — and most exam-prep tools sit behind paywalls or accounts.
The Solution
Designed a single offline-first app that unifies structured study guides, practice quizzes, full mock exams, and spaced-repetition review behind one clean interface. Content lives in plain JSON so the material scales without touching code, and a service worker makes the entire app usable offline after the first visit — free, account-free, and privacy-preserving.
Key Features
Study Guides & Practice Quizzes
Concept cards, analogies, worked examples, and exam-pitfall warnings per module, plus single/multi-select quizzes with instant feedback, hints, rationales, and keyboard shortcuts.
Timed Mock Exams
Full 90-minute exams at the real 65% pass mark with a live timer and per-domain score breakdown to pinpoint weak areas.
Spaced-Repetition Review
A Leitner 5-box SRS engine with confidence calibration surfaces the cards you're most likely to forget, so revision time compounds.
Offline-First PWA
Installable app with a service worker for full offline use, global Ctrl/⌘K search, dark/light themes, a study heatmap, and JSON progress backup/restore across devices.