Anton Andriievskyi

A speed coding competition web application Toptal uses to attract new talent at conferences, meetups, and online.

Optimized for high-load; uses Nginx micro-caching; uses mutexes as a fast means to prevent database transaction race conditions.

I developed numerous features for the FormAssembly web service:

• Payment gateway connectors (Stripe, iATS, Chargent, eWay).
• Formula syntax checker and highlighter.
• Charts module to visualize statistics of form submissions and response fields.
• React-based framework for building connector interfaces.

I also developed and improved existing modules, such as the application's billing system and the FormBuilder itself.

Using AutoLisp, Delphi, and VBA, I developed a complete solution to semi-automate the design of log houses in AutoCAD.

Features include:
• Automatic generation of 3D models based on floor plans and calculations of building shrinkage, log diameter, etc.
• Automatic generation of printed specifications for wood processing factories.
• Automatic generation of construction documentation.

As part of my job at Fullepic, I developed a WordPress plugin that integrates with Detroit Trading API and allows users to sell leads to car dealers in the US.

What it does:
• Adds shortcodes that allow to render entry and lead forms in WordPress pages, header, footer, or sidebar.
• Logs every API request made to Detroit Trading API.
• Imports and updates Detroit Trading CSV files listing car make/model/year/style.
• Runs a background task that calls a time-consuming API to sell leads generated via form submissions.
• Logs all form submissions for statistics.

A Global Wildlife Conservation website that covers the organization's effort to bring the Tasmanian devil back to mainland Australia. I led the technical side of the development. The website was delivered in three weeks.

A comprehensive WordPress plugin to retrieve and display JSON, CSV, or MySQL data anywhere in WordPress.

• Understands JSON of any complexity.
• Fetches JSON from URLs or any data from your blog’s MySQL database.
• Configurable CSV (comma-separated values) reader.
• Caches retrieved data locally for better performance.
• Uses expired values from the cache as a fallback if the data source is not available.
• Simple Twig syntax to output data (with syntax highlighting).
• Embed it anywhere in WordPress using shortcodes.
• Compatible with Visual Composer.
• Integrates with Discourse.

I'm a contributor to the WC Marketplace WordPress plugin, documented here: https://wc-marketplace.com/external-contributors/.

I've been delivering various fixes and improvements to the plugin over the past few months.

Kozovod is an online community of Ukrainian and Russian goat keepers and cheese producers (an ongoing volunteer/hobby project).

Activities:
• Development of learning materials.
• Community growth.
• Installing, updating, configuring, tuning, and integrating WordPress and Discourse.
• Designing contests and attracting sponsors.
• Overseeing the translation of Discourse UI to multiple languages.
• Running an online cheese marketplace.
• Integration with social networks.
• Managing ad campaigns.

An eCommerce platform that runs via Telegram Bot as well as a classical Web Shop, and accepts Bitcoin and Monero. The solution is multi-tenant and is feature complete since it supports: tagging, vouchers, stock management, and accountant reports, blockchain integrations with one-time payment addresses and automatic refunds, currency exchange rate monitoring, DDOS protection and throttling, periodical database cleanups, statistics aggregation, embedded seller-buyer chats, and even anonymity and data encryption. The engine is also designed to work with multiple messengers (potentially adding WhatsApp, Viber, and others).