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Portfolio

Platforms, apps and websites we've designed, built and shipped: web, mobile, backend, cloud and security.

Backend & Cloud · Enterprise

OAuth Authentication and Sync Service

One secure account and encrypted settings sync shared across a whole family of apps, with signed requests on every call.
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Backend & Cloud · Enterprise

Multi-Tenant Hosting Panel

Single-server control panel that provisions, isolates, secures and monitors many PHP sites, each with its own user, database and Cloudflare tunnel.
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Security · Enterprise

Web Application Firewall

Multi-tenant, high-assurance web application firewall built as a fleet of Rust microservices, with the OWASP Core Rule Set and a live dashboard.
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Backend & Cloud · Enterprise

Host Monitoring System

Know the health of every server and machine you run at a glance, live, from one dashboard or your phone, and get warned before small issues turn into downtime.
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Security · Enterprise

Zero-Knowledge Password Manager

Zero-knowledge password, passkey and TOTP manager with post-quantum crypto, a full data-integrity layer, cryptographic team sharing and enterprise SSO. Self-hosted on your own infrastructure.
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Backend & Cloud · Enterprise

SharePoint and Exchange Migration Tool

Enterprise Microsoft 365 migration for Exchange, SharePoint, OneDrive and Teams, across tenants and hybrid environments.
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Backend & Cloud · Enterprise

App Store and Update Server

Private app store and OTA update server with signature-pinned silent updates, delta patching and OS firmware updates.
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Mobile · Enterprise

Cross-Platform File Sharing App

Private file sharing across iOS, Android, Windows, macOS and Linux, with post-quantum end-to-end encrypted chat and calls.
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Web

CrossX-IT GmbH Company Website

WordPress site for a Munich IT managed-services provider, with online booking, a Microsoft 365 integration and a cost calculator.
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Web

Ristorante Dino Restaurant Website

WordPress website for an Italian restaurant, with an editable menu and table booking.
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Backend & Cloud

iOS App Signing Service

Self-hosted web service that re-signs iOS apps and serves one-tap over-the-air installs; certificates never leave your server.
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Backend & Cloud

IP Geolocation API

Commercial IP geolocation and network-intelligence API with a customer portal, metered API keys and built-in payments.
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Mobile

Android Network Firewall

On-device Android firewall and live traffic monitor with per-app control, using root or no-root engines automatically.
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