01 / Selected work

Built to solve real problems.

Four snapshots of my work: the systems, the contributions, and the results. Professional projects at Koala and Mediacom, alongside my JSON Schema editor.

REAL-TIME SYSTEMS01

Real-time WebSocket middleware

Keeping 15,000 concurrent users connected, with faster connections and lower message latency.

TypeScriptWebSocketReal-time

PAYMENT INTEGRATIONS02

Payments: Nexi & Stripe

Payment integration experience spanning a custom Java library for Nexi and Stripe integrations in backend applications.

JavaNexiStripe

BACKEND ARCHITECTURE03

Pro funding-program engine

A flexible JSON-based engine that turns GSE public funding programs into digital workflows.

Java 25Spring Boot 4PostgreSQL

DEVELOPER TOOLS04

JSON Schema Graph Builder

A visual JSON Schema editor that keeps source code, an interactive graph, validation, and live form previews in sync.

TypeScriptReactJSON Schema

Professional case studies and a personal developer tool. The JSON Schema editor includes public source code and a live demo; proprietary project materials remain private.