pasichDev / index

Andrii Pasichnyk

Software Engineer

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

Encly

Offline, encrypted notes and tasks for Android. SQLCipher at rest, PIN lock with optional biometrics, a 12-word recovery phrase and encrypted backups. No account, no ads, no internet permission.

KotlinComposeSQLCipher

Details → Play Store F-Droid

30k+

My Notes

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

KotlinRoomMVVM

Details → Play Store

SovaWallet

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

C++Dart FFIFlutter

GitHub ↗

Archived

Linqora

Research project: PC-mobile integration — media control, resource monitoring and file transfer over WebSocket with mDNS discovery. No longer maintained.

GoFlutterWebSocket

GitHub ↗

Skills

Networking & VPN

WireGuard P2P & NAT Split DNS TCP/IP & UDP iptables gRPC / Protobuf

Systems & Embedded

C++ C Linux Kernel Yocto / BitBake Windows Services Win32 / CNG Profiling

Backend & Data

Go cgo / gomobile REST API WebSocket PostgreSQL SQLite Encryption at rest

Mobile & Desktop

Flutter Dart Kotlin Swift Java Jetpack Compose Offline-first

Infra & Practices

AWS GitLab CI GitHub Actions Firebase Architecture Code Review

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, CI/CD and cloud — FCM, SSE, GitLab, AWS

Tic-Tac-Toe

vs. AI

Your move — you're X