morozhen_ko

Stanislav Moseyko

Indie developer & QA engineer.

I build and harden products.

Products

Chroma Bankshot

Chroma Bankshot is a minimalist physics puzzle game with a cosmic neon aesthetic.

AndroidLiveLive Demo

ReactTypeScriptViteTailwind CSSCapacitor (WebView app)

Store Demo Promo

ClearSub

Track all your subscriptions in one place, never miss a renewal. Local-first subscription tracker.

AndroidLive

FlutterDartRiverpodDrift (SQLite)

Store Promo

AppStreak

AppStreak helps you manage daily testing during closed beta: all test apps in one place with a simple visual progress timeline and local launch history.

AndroidLive

KotlinJetpack ComposeRoomHiltKotlin Flow

Store Promo

Socks Shopping Store

Hardened ASP.NET Core MVC demo store for QA: security headers + rate limits, automated tests (NUnit/Selenium), performance checks (k6), security scans (OWASP ZAP), and CI/CD-published Allure reports.

Web & Open SourceLive Demo

ASP.NET Core MVC.NET 8C#RazorNUnitSeleniumk6OWASP ZAPAllureGitHub ActionsAzure App Service

View Report

HandyLog

Offline-first CRM for field technicians: clients → jobs → services/materials → totals, with local inventory and export.

Android, iOS, WebLive

FlutterDartRiverpodDrift (SQLite)Offline-first

Store Promo

IceVault

Single source of truth for standards, ADRs, patterns, and project documentation with review-first ingestion and export.

WebLive

ReactTypeScriptViteTailwind CSSCloudflare PagesPages FunctionsD1 (SQLite)DrizzleHonoZodFTS5

Proteus

Telegram moderation bot for channels: deterministic pipeline with stateful Durable Objects on Cloudflare Workers.

Telegram / Cloudflare WorkersLive

Cloudflare WorkersDurable ObjectsTypeScriptTelegram Bot APIKV

DiagHub

Private LLM-powered agent platform for diagnostics, automation, and knowledge management. Used for internal workflows and integrations.

Web & API (Private)Live

PythonFastAPILangChainPostgreSQLDockerOpenAI APICloudflare Workers

Telemetry

Privacy-safe first-party product telemetry: daily aggregates only. Used for internal workflows.

Web & API (Private)Live

ReactTypeScriptViteCloudflare Pages FunctionsD1 (SQLite)KV

2VRTX Marketing Site

Rebuilt 2VRTX marketing site on Astro + Tailwind with preserved design, SEO parity, and video modal UX from legacy Tilda.

WebLive

AstroTailwind CSSTypeScriptCloudflare PagesPages FunctionsResend

View

Cycle Whisper

Privacy-first, offline-only menstrual cycle tracker. No accounts, no cloud - all data stays on your device.

AndroidLive

FlutterDartBLoCget_itDrift (SQLite)Offline-first

Store Promo

BannerMatch

Turn-based tactical lane battle game with deterministic mechanics, medieval theme, and 3D isometric presentation.

AndroidLiveLive Demo

Unity 3DC#Deterministic Simulation

Store Demo Promo

To-Do List Offline

Simple offline task manager with recurring tasks, subtasks, home-screen widgets, and optional app lock. No accounts needed.

Android, iOSLive

FlutterDartRiverpodDrift (SQLite)Offline-first

Store Promo

Engineering & QA Philosophy

Quality as a product feature

Not an afterthought. Reliability drives retention.

Automation-first thinking

Build systems that scale without manual overhead.

Testing as risk control

Every test is a bet against failure in production.

CI/CD as confidence

Ship fast, ship often, ship with certainty.

Writing & Devlogs

Technical writing, product devlogs, and engineering insights.

Published on LinkedIn and personal blog

Read on LinkedIn

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