Vahid · Veteran Software Solutions Architect & Engineer

/01 2022 → present Flagship

TerraCrypt
Messenger

End-to-end encrypted messenger spanning iOS, Android, Tauri desktop & a full self-hosted Go backend with admin dashboard and observability stack. Group chats, voice, video, file transfer, all protected by custom-curve cryptography running on every device.

TC.

iOS Native · Swift / SwiftUI

Modular monorepo of internal Swift packages, each feature as its own package, fully unit-tested.

SwiftUI + Combine reactive UI
Notification Service Extension for E2E push decryption
Group calls via WebRTC + custom signaling
Background sync, biometric vault, secure enclave
iPad & Mac Catalyst support

Internal Packages

CoreCrypto: primitives & key exchange
CoreCryptoDM, CoreCryptoGroup: chat encryption
CoreChat / CoreChatUI: chat engine + UI
CoreNetwork: gRPC / REST client + reconnect
CoreDatabase: encrypted SQLite via SQLCipher
CoreMessages, CoreFriends, CoreParticipants

Swift 5.9SwiftUICombine WebRTCSQLCipherCocoaPods SPMXcodeNSE

Android Native · Kotlin / Compose

Full Kotlin codebase with Jetpack Compose UI, Gradle KTS build system, mirrors iOS feature set 1:1.

Jetpack Compose declarative UI
Coroutines + Flow for async + reactive streams
Hilt dependency injection
Room (encrypted) + DataStore
Foreground services for calls + sync
FCM with custom decryption pipeline

Architecture

Clean architecture: data / domain / ui
Multi-module Gradle for fast builds
Native crypto via JNI bridges to C
WorkManager for reliable background tasks

KotlinJetpack ComposeCoroutines HiltRoomWebRTC FCMJNIGradle KTS

Desktop · Tauri (Rust + TypeScript)

Cross-platform desktop client: Windows, macOS & Linux from one codebase. Native performance, web-tech UI, ~20 MB installer.

Rust core: crypto + database + IPC
TypeScript + Vite + Tailwind front-end
Native menus, tray, notifications
AppImage / .dmg / .msi packaging
Auto-updater + code signing

Why Tauri

10× smaller than Electron, true-native shell, sandboxed IPC, no Chromium overhead.

RustTauri 2TypeScript ViteTailwindpnpm AppImageWiXnotarization

Backend · Go monorepo

Self-hosted, horizontally scalable, deployed via Docker Compose stack. Zero-downtime live updates on the production server.

Go services: API, signaling, push, payments
PostgreSQL: main store, with custom migrations
Redis: sessions, rate-limit, presence
CoTURN: WebRTC TURN/STUN for NAT traversal
MinIO: S3-compatible encrypted media storage
Apache + Nginx reverse proxies (vhosts per service)
PHP modules for legacy payment / OTP flows

Observability stack

Grafana: dashboards & alerts
Loki: log aggregation
Fluent-bit: log shipping
Kibana: search & analytics
APM: distributed tracing
Prometheus metrics endpoints

GoPostgreSQLRedis Docker ComposeCoTURNMinIO NginxApacheGrafana LokiKibanaFluent-bit

Admin Dashboard

Internal control plane for operators: user management, server health, content moderation, audit logs, billing.

React + TypeScript SPA
Server-side rendered via Dockerfile.admin
Role-based access (RBAC) with audit trail
Real-time metrics streaming
Subscription & payment overview

Highlights

Live broadcast notifications to clients
One-click user revocation + key rotation
Migration runner for DB schema
Backup & data-restore tooling

ReactTypeScriptTailwind DockerRBACWebSockets

/02 2024–2026 Own SaaS · eumeet.eu

EU
Meet

My own video-meeting SaaS: encrypted WebRTC video calls, screen-sharing & chat on a self-hosted media stack. Free tier plus Pro at $10/mo (Polar billing). Four clients (web, desktop, iOS & Android) on one PHP API with JWT auth shared across subdomains.

EUm

API & Real-time

PHP + SQLite API behind a self-hosted WebRTC media server (SFU) for routing 1-on-1 and group calls with encrypted streams.

PHP REST API + SQLite (users, rooms, billing)
JWT cookie auth shared across subdomains
WebRTC SFU media server for video routing
Same-origin token proxy for browser clients
Polar checkout + webhooks for Pro billing
Free / Pro ($10/mo) plan enforcement

Infrastructure

Docker Compose for the media stack
Apache reverse-proxy, Cloudflare DNS + TLS
Cloudflare Origin cert (wildcard *.eumeet.eu)
Encrypted SRTP media transport

PHPSQLiteJWT WebRTCSFUDocker CloudflarePolar

Web App · React + Vite

Single-page web client at app.eumeet.eu, joins calls straight from the browser, gets its media token same-origin so no CORS pain.

React + TypeScript, built with Vite
In-browser WebRTC calls & screen-share
JWT cookie scoped to .eumeet.eu
Same-origin token proxy (token.php)

Desktop · Tauri

One codebase shipped as a native desktop app
Tauri (Rust shell) wrapping the web client
Small binary, native window & system integration

ReactTypeScriptVite TauriRustWebRTC

iOS Client · Swift

Native Swift app integrating CallKit, PushKit and the system call UI. Supports multitasking, picture-in-picture and AirPlay.

CallKit + PushKit deep integration
WebRTC.framework with custom signaling
Picture-in-Picture during calls
JWT login, token stored in Keychain
Localized for 12+ EU languages

Polish

Smooth transitions, custom haptics
Accessibility (VoiceOver, Dynamic Type)
Background audio & CarPlay

SwiftCallKitPushKit WebRTCKeychainSwiftUI

Android Client · Kotlin

Native Kotlin app with full ConnectionService integration, foreground call services and Material 3 design.

ConnectionService + Telecom integration
Foreground service for ongoing calls
Material 3 + Compose UI
JWT login, token in EncryptedSharedPreferences
Background-call PiP

Highlights

Adaptive bitrate streams
Ringtone & ringback parity with iOS
Push via FCM with E2E payload

KotlinJetpack ComposeWebRTC Telecom APIFCMMaterial 3

/03 Networking Self-hosted

ZarpVPN

Self-hosted VPN with a PHP control panel: provision users, rotate credentials and audit every action. BLAKE3-hashed secrets, sudo-driven user creation on the host and a full activity log.

Z.

What's inside

PHP admin panel — login, navbar, dashboard
User provisioning via sudo on the host
BLAKE3-hashed credentials
Full audit & activity logging
Server-side config management

Stack

PHPBLAKE3Linux sudoApache

/04 Game vaha.net/seamoon

SeaMoon

A moonlit fishing voyage — a browser 3D game. WebGL scene with glTF boats, buoys and fish, Web Audio ambience, backed by a Node server for cloud saves and anti-cheat.

S.

What's inside

WebGL 3D scene, ES modules
glTF (.glb) models, textures & audio
SQLite-backed cloud saves
Server-side anti-cheat
Real-time sync over WebSocket

Stack

WebGLglTFWeb Audio NodeExpressws better-sqlite3

/05 E-commerce SaaS Multi-tenant · vshopr.org

vShopr

Self-hosted, multi-tenant e-commerce SaaS. One repo, two parts: vShop (the storefront + admin, PHP API + React) and the vShopr control plane that turns a Polar checkout into a fully provisioned tenant: own subdomain, own SQLite DB and admin user, in seconds.

vS

Storefront & Admin

React storefront + admin on a PHP API, one per tenant: products, cart, checkout, orders, staff and theming.

Product catalog & categories
Cart, checkout & order flow
Customer & admin authentication
Inventory + order management
Configurable theming, PWA-ready front-end
Server-side plan caps (products / staff / storage)

Stack

ReactTypeScriptVite PHP REST APISQLitePWA

Control Plane

Apex-domain SaaS layer: signup, billing, automatic tenant provisioning and owner / tenant dashboards.

Polar checkout → signed webhook → account
Email verification → auto tenant provisioning
Per-tenant copy of the app, SQLite DB & admin
Wildcard subdomains + custom domains (Cloudflare for SaaS)
One-shot installer: web server, TLS, firewall

Security & Ops

Per-login Turnstile + rate limiting
open_basedir tenant isolation, uploads exec-block
.env & secrets outside the web root
License / anti-tamper for single-license builds

PHPSQLitePolar CloudflareTurnstileApache

/06 Real Estate Platform

Nekretnine

Real-estate listings platform with agencies, agents and rich property pages. Built on Next.js with server-side rendering, image optimization and detailed search filters.

N.

What's inside

Property listings with rich media
Agency & agent profile pages
Faceted search & map view
SSR + image optimization
Contact & inquiry flow

Stack

Next.jsReactTypeScript SSRImage optim.SEO

/07 Government Live · Novi Pazar

Firmin
Public Revenue

Official portal for the City of Novi Pazar's Public Revenue Administration. Citizens browse public notices, procurement listings & downloadable documents; staff publish content via an authenticated back office.

F.

What's inside

React SPA with light/dark theming
Document repository with previews
Public procurements board
SEO + structured data for visibility
Authenticated staff back office
Serbian-first localization

Stack

ReactTypeScriptVite PHP APIMySQLApache

/08 EdTech Study app

Funkcionalna
Anatomija

Interactive study platform built around the DIF Functional-Anatomy curriculum. Browse extracted content, flip through digital scripta, and read premium PDF notes, all in a hand-drawn, paper-feel UI.

A.

What's inside

Topic browser with extracted content
Embedded PDF scripta & premium notes
Hand-drawn UI (Patrick Hand / Marker)
Light/Dark theme toggle
Search across the curriculum

Stack

Vanilla JSHTML / CSSPDF.js Custom typography

/09 Smart City Live

Smart
Parking

Real-time parking-spot platform with interactive maps, route guidance and a PHP-driven backend. Drivers see free spots, get turn-by-turn navigation, and operators manage zones from a single panel.

P.

What's inside

React + Vite SPA front-end
Leaflet maps + leaflet-routing-machine
PHP REST API with MySQL store
Live availability (WebSocket polling)
Mobile-first responsive UI
Operator console for zone management

Stack

ReactViteLeaflet OpenStreetMapPHPMySQL REST APIWebSockets

/10 Streaming vaha.net/movie

Vaha
Movies

Personal movie & TV-show streaming portal with cached metadata, ad-blocking, video extractors and direct-play sources. Custom PHP backend, paginated JSON cache and integrated AdGuard Home for clean playback.

M.

What's inside

Movie + TV show browsing & details
Multi-page JSON metadata cache
Custom video-source extractors
AdGuard Home network ad-blocker
Search, genres, recommendations
Progressive image loading

Stack

PHPJavaScriptJSON cache TMDB APIAdGuard HomeApache

/11 Tool Web app

Teleprompter

Browser-based teleprompter for presenters & streamers. Adjustable speed, mirror modes, hotkey control and live-edit script. Works on any device with a browser.

▶.

What's inside

Variable scroll speed (0.1x–10x)
Mirror / flip modes for camera rigs
Hotkey + remote control
Inline script editor with autosave
Fullscreen + presenter mode

Stack

ReactViteTypeScript LocalStorage

/12 Desktop App Win · Linux

Uplatnice
& Potvrde

Cross-platform desktop tool for generating Serbian payment slips (uplatnice) and receipts. One installer for Windows (.exe) and Linux (.AppImage), with print-ready PDF output and stored client data.

€.

What's inside

Generates compliant Serbian payment slips
Custom receipt templates
Local client & invoice database
Print-ready PDF export
One installer per platform

Stack

TauriRustTypeScript SQLitePDF generation Windows .exeLinux .AppImage

/13 Utility Bosnian

Vaktija

Daily Islamic prayer-times app with location-aware schedule, monthly view, notifications and an offline-friendly PWA setup. Localized in Bosnian, designed to be lightweight and instant.

V.

What's inside

Geo-aware prayer schedule
Daily / monthly / yearly views
Notifications + Adhan reminders
Hijri calendar integration
Installable PWA, offline support

Stack

ReactService WorkerPWA Geolocationi18n

/14 2024–present Personal

vaha.net

This very portfolio. A multi-language, accessibility-first React SPA hosted on Cloudflare with edge caching, schema.org metadata and full localization in English, German, French, Italian, Spanish & Serbian.

v.

Front-end

React 18 + TypeScript SPA
Shopify Polaris design primitives
i18n: 6 languages, auto-detect
Theme switcher (light / dark)
Schema.org structured data + OG images

React 18TypeScriptPolaris i18nWebPSEO

Infrastructure

Cloudflare CDN + Rocket Loader
SPA routing, prefetch & preload
Sub-1s LCP on 3G profile
PWA manifest, installable
100/100 Lighthouse on perf & SEO

CloudflarePWAService Worker Schema.orgLighthouse

Vahid.

Veteran Software Solutions Architect & Engineer

I architect entire product ecosystems: secure messengers, real-time conferencing platforms, distributed backends, native mobile apps and desktop clients. From low-level cryptography and reverse engineering up to polished UI on iOS, Android & the web.

Thirteen disciplines.One craft.

Selected Work

TerraCryptMessenger

iOS Native · Swift / SwiftUI

Internal Packages

Android Native · Kotlin / Compose

Architecture

Desktop · Tauri (Rust + TypeScript)

Why Tauri

Backend · Go monorepo

Observability stack

Admin Dashboard

Highlights

EUMeet

API & Real-time

Infrastructure

Web App · React + Vite

Desktop · Tauri

iOS Client · Swift

Polish

Android Client · Kotlin

Highlights

ZarpVPN

What's inside

Stack

SeaMoon

What's inside

Stack

vShopr

Storefront & Admin

Stack

Control Plane

Security & Ops

Nekretnine

What's inside

Stack

FirminPublic Revenue

What's inside

Stack

FunkcionalnaAnatomija

What's inside

Stack

SmartParking

What's inside

Stack

VahaMovies

What's inside

Stack

Teleprompter

What's inside

Stack

Uplatnice& Potvrde

What's inside

Stack

Vaktija

What's inside

Stack

vaha.net

Front-end

Infrastructure

Tooling & Infrastructure

Swift / SwiftUI

Kotlin / Compose

Rust / Tauri

TypeScript

React

WebRTC

Cryptography

Go

PostgreSQL

Redis

Docker

Linux / DevOps

Nginx / Apache

Cloudflare

CI / CD

Grafana / Loki

Thirteen disciplines.
One craft.

TerraCrypt
Messenger

EU
Meet

Firmin
Public Revenue

Funkcionalna
Anatomija

Smart
Parking

Vaha
Movies

Uplatnice
& Potvrde

Let's build
something real.