pasichDev / index

Andrii Pasichnyk

Software Architect

Full-stack, leaning to systems. I write C++ services on Windows, Go on the backend, and mobile apps in Kotlin, Swift & Flutter.

Rivne, 🇺🇦 · UTC+2 Available

View CV ↗ Tools Contact

GitHub Activity

5+ Years Exp

10+ Projects

30k+ Downloads

6 Languages

Selected Work

01 — 04

Linqora

Seamless PC-Mobile integration. Control media, monitor resources, and transfer files via WebSocket/mDNS.

GoFlutterWebSocket

GitHub ↗

SovaWallet

NosoCoin ecosystem wallet. Complex cryptographic implementation, node balancing, and custom binary protocols.

C++Dart FFIFlutter

GitHub ↗

30k+

My Notes

Offline-first Android notebook. Custom rich-text editor, local encryption, Room database, and zero tracking.

KotlinRoomMVVM

Details → Play Store

Felisca

Personal mental companion. Deep mood tracking with privacy-first architecture. Offline-only, encrypted locally, complete control.

FlutterDartPrivacy-First

Details → Play Store

Skills

Systems

C++ Windows Services WireGuard-NT Memory Safety BCrypt / CNG Win32 API

Backend

Go Encryption at rest SQLite (no cgo) Reproducible Builds WebSocket REST API

Mobile

Kotlin Swift Java Jetpack Compose BLE / NFC Offline-first

Cross-platform

Flutter Dart C++ / NDK

Realtime & Infra

Firebase FCM SSE Event Pipelines GitLab CI/CD

Web

React Next.js TypeScript HTML & CSS

What I Build

System Services

Background services in C++ on Windows — lifecycle, IPC, native APIs

Backends

Go — REST APIs, encryption at rest, reproducible builds

Architecture

Keeping services, data and boundaries clean as things grow

Mobile Apps

Kotlin, Swift and Flutter — from first build to store release

Web Apps

React / Next.js — fast, accessible, SEO-friendly

Realtime & Infra

Push, live updates and CI/CD — FCM, SSE, GitLab

Tic-Tac-Toe

vs. AI

Your move — you're X