Mark Jivko

Fractional CPTO

years of experience
+ hours on solo projects

Grow your social media accounts without losing your mind.

  • MacOS, Windows & Linux: Delivering a beautiful desktop experience for all major operating systems with Electron.js
SocialDetox.ai

EchoDuck allows you to leverage modern browser APIs to instantly create a password-protected, private Static Web Server from any folder on your device. Your files are not uploaded to any remote server. Instead, they are tunneled through a WebSocket connection.

  • Reverse proxy: A WebSocket server written entirely in PHP creates a tunnel between HTTP requests and connected hosts. All connections are SSL-encrypted.
  • Browsers are awesome: Duplex connections are leveraged for both HTTP-to-proxy communication (requests) and host-to-proxy communication (responses). Modern browser APIs are leveraged for read-only access to files. The client application acts like a Static Web Server.
EchoDuck

URL indexing service that handles unlimited Search Consoles and websites with millions of URLs.

  • Crontab manager: A crontab manager spawns the tasks required to discover URLs, inspect URL indexing status and request URL indexing using Google's APIs.
  • Lightweight: The backend is written in pure PHP with a MongoDB database. An OpenAPI-compatible REST API serves the entire application behind Cloudflare's proxy.
  • Next.js SSG: The frontend is a SSG Next.js application with PWA enhancements, hydrated with API calls carrying a JWT bearer token issued by Firebase.
Go index me!

Built various PHP SDKs for Web3 API providers

  • Enjin PHP SDK: Converted the official Enjin Java SDK to PHP.
    Used a simple design pattern to load and execute GraphQL mutations.
  • Tatum PHP SDK: Rebuilt the Tatum PHP SDK from scratch with a much better architecture using SOLID principles.
Tatum SDK Enjin SDK

An automated code review tool designed for WordPress plugins.
60.000+ plugins are continuously tested with results published daily.

  • Automated testing: WordPress plugins are installed, tested and uninstalled.
    Key performance indicators are logged at every step with focus on smoke tests, SRP and cyclomatic complexity.
  • Static Site Generator: Test results are stored as static HTML pages enriched with LD+JSON and PWA caching.
    References and search caches are updated automatically.
Repository Visit website

Stephino RPG is the first-ever role-playing game for WordPress with PWA, also available on Steam (Electron.js client)
Acquired in December 2021 by Metaverse Games Limited

  • Massively Multiplayer: The game was optimized for the lowest-performing shared hosting environments with tens of concurrent players, minimizing Big O, memory usage and bandwidth requirements for a smooth user experience
  • Customizable: All game objects are editable in a web CRUD interface that is dynamically generated from PHPDoc comments of specific methods. The game configuration is stored in JSON format, with i18n support
  • Theme-ready: All design elements can be altered (CC-BY-SA 4.0 license) inside of installable themes. A web worker caches all resources, static (images) or dynamic (animations and other scripts) with auto-reload on config save or plugin update
  • Optimized animations: Users can also customize in-game animations; the generated CSS rules were carefully optimized to minimize layout shifts, relayouts and repaints, maximizing performance with GPU rendering when available
Repository About

A side-project to explore theming opportunities for Stephino's design team outside of Google Play

  • Website builder for WordPress: ThemeWarlock allows designers to create WordPress themes without writing code
  • Snapshots: Similar to VM snapshots, the software automatically saves designers' work in a plugin-agnostic manner, without interfering with the underlying source code
  • Build tools: When a theme is ready for publishing, ThemeWarlock generates the source code, screenshots and other assets and prepares archives required by ThemeForest, MojoThemes and other theme marketplaces
  • Code templates: A custom template engine similar to Smarty's is used as part of source code generation in the build process
Repository

FairPlayer is an Android music player with a custom audio library and support for animated themes

  • Equalizer: The app use VLC's library to deliver a crisp sound controlled by a custom equalizer
  • Themes: FairPlayer is strongly focused on themes, supporting animated effects for the first-time on Google Play
  • APK Factory integration: Design stations software could prototype, preview and convert themes for other music players into FairPlayer themes, rapidly expanding Stephino's portfolio
Repository About

Distributed software for rapid prototyping and publishing of Android apps

  • Large-scale: Published and maintained more than 6000 Android apps in the Personalization category totaling over 100 million downloads on Google Play
  • Collaboration tools: APK Factory Hub is a public web application where designers, copyrighters and managers work on new themes remotely
  • Automated workflow: The Hub assigns new apps to VM clusters after QA. It also handles push notifications, ad mediation and Stephino's private theme store
  • Total automation: Really fast app screenshots and post-processing (seconds instead of minutes), internationalization, cloud backup, APK creation with Ant tools and much more
  • Extreme efficiency: Software handles repetitive tasks so that app turnover is measured in hours instead of days
About

Experimented with a few CSS techniques on commercial coming soon pages sold on ThemeForest and created short YouTube tutorials

  • Clean & customizable: The commercial projects are meant to be modified by novice clients
  • Parallax and beyond: These tiny code snippets are great exercises for font-end development
Free Commercial

Storyline is a small jQuery plugin that enables scroll-based effects

  • Tiny library: This 17KB compressed JavaScript library powers the animations you see on this page
  • Developer tools: Set guide: true to enable a graphic console with logs, a visual representation of the scroll progress and a preview of internal variables
  • Log levels: Apart from the guide console, messages are stored in the browser console; logs can be filtered or disabled in production
  • Fast: Expensive mathematical operations are avoided, absolute coordinates being preferred to percentages without compromising flexibility
Repository Demo

Fervoare is a small Content Management System designed for SaaS; reviewed by SoftPedia in 2013

  • An OctoMS app: Fervoare is built on top of OctoMS (next slide). In its prime it was used by tens of startups and agencies including Cinepolitica.
  • Installer: The app features a 1-click installer which creates the required database tables and populates them with demo data
  • User roles: PHPDoc tags are assigned special meaning to restrict access to Controller methods; the admin menu is updated to reflect these restrictions for each user by role
  • Themes: Both the front-end and back-end can be customized with themes; menus and other content regions can be rendered inside theme templates
  • SEO: All content types (pages and posts) have editable keyword lists and descriptions; an optional page extension can be set for all URLs (for example ".html")
Repository Preview

OctoMS is a small PHP Framework inspired by CodeIgniter

  • Debugging interface: An AJAX-powered interface replaces the default controller output for uncaught exceptions and on-demand (in development mode)
  • Model-View-Controller: The framework imposes SoC (Separation of Concerns) with an MVC architecture; stateless libraries can be used alongside model instances
  • RegEx Routing: PCRE (Perl Compatible Regular Expressions) are used to map URLs to Controllers
  • Cookie validation: The Blowfish cipher is used to validate authentication cookies by user agent and IP, preventing most session hijacking attack vectors
Repository Preview

Visual effects Storyline ˙ js

Sound effects Howler ˙ js

Created by Mark Jivko

Copyright © 2021-2025 Mark Jivko