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Case study

ShakeMaster Ecosystem — Active Status & Licensing Platform

Dual-component ecosystem: a Windows client plus a high-performance server platform for subscriptions, licensing, payments (fiat/crypto), and zero-touch updates.

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Overview

Project overview

ShakeMaster is a dual-component ecosystem for long sessions and remote work: a Windows client and a server platform that handles licensing, subscriptions, payments, and updates. The Server also acts as the storefront — fast SSR pages, “Premium 2026” visual language, and full i18n.

ROLE

Full Stack Engineer (Server) + Desktop Client Engineer

TIMELINE

2026

FOCUS

  • Subscription + licensing architecture
  • Hybrid payments (fiat + crypto)
  • SSR storefront + i18n routing
  • Zero-touch updates pipeline
  • Windows client engineering (.NET)

Story

Problem → Solution → Outcome

PROBLEM

ShakeMaster needed a single control plane: sell subscriptions globally, enforce device-bound licensing, ship updates safely, and keep the storefront premium and fast.

SOLUTION

We delivered a two-part architecture: a Node/Express Server for storefront, payments, subscriptions, licensing, and updates; plus a .NET Windows client with background updates, a premium UI, and a secure licensing handshake based on hardware fingerprints.

OUTCOME

A premium, automated ecosystem: smoother onboarding, lower support overhead, safer updates, and a consistent brand experience from web to desktop.

Highlights

What we built

Key systems shipped end-to-end — designed for reliability, conversion, and scale.

Hybrid payments that convert

Fiat + crypto checkout with validated callbacks and volatility handling — designed to be fully automated.

  • Monobank Merchant: invoice creation, webhook processing, fallback status checks.
  • NOWPayments IPN validation for automated USDT TRC20 processing.
  • Smart rate caching (cryptoMinCache) to prevent “underpaid” states.

Subscription + licensing backbone

A strict, repeatable system for plans, seats, verification, renewals, and lifecycle automation.

  • Multi-tenancy: Personal (single device) and Team (tiered seat allocation).
  • Device fingerprinting: license verify API binds keys to hardware hashes.
  • Lifecycle management: renewals, trials, grace periods, automated invoices.

Zero-touch updates

A low-friction update pipeline that keeps the desktop client current without manual installs.

  • Server exposes an /updates feed endpoint for versioned releases.
  • Client checks updates on startup and patches in the background (Squirrel).
  • Safe handoff: updates and licensing share a single control plane.

Premium UI across web + desktop

A single design language from the landing page to the installed client.

  • Glass storefront: blur depth, gradients, micro-interactions, fast SSR.
  • WinForms pushed further: custom painting, DWM integration on Windows 11.
  • Shared tokens: color, typography, radii — consistent brand feel.

Challenges

Technical challenges

The hard parts — and the solutions that made the system stable.

Results

Impact

Measured outcomes and operational wins.

  • Fully automated lifecycle: checkout → invoice → license → activation → renewals.

  • Hybrid fiat + crypto payments with validated webhooks/IPNs and volatility buffering.

  • Zero-touch desktop updates driven by a versioned server feed.

  • Unified premium design language across web + desktop.

Stack

Tech stack used

Tools and patterns used on this build.

Server runtime

  • Node.js
  • Express.js

Database

  • MongoDB (Docker)
  • JSON fallback storage

Storefront

  • EJS (Server-Side Rendering)
  • Vanilla CSS (Glassmorphism design system)

Payments

  • Monobank Merchant (Fiat/UAH)
  • NOWPayments (USDT TRC20)
  • Webhooks + IPN validation

DevOps

  • Docker Compose
  • PM2
  • GitHub Actions

Desktop client

  • .NET 8
  • C#
  • Windows Forms
  • Clowd.Squirrel (Squirrel updates)
  • P/Invoke (user32.dll, dwmapi.dll, kernel32.dll)

Utilities

  • nodemailer
  • i18n
  • multer

Metrics

Impact metrics

Automation

100% automated

Components

2server + client

Payment gateways

2fiat + crypto

Plan tiers

2Personal + Team

Locales

3languages

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