Python Developer in Novosibirsk / Ekaterinburg, Russia

I implemented the full-stack architecture for this wedding-locator service. Technologies used in development were:

Server-side: Nginx, PostgreSQL, SQLite, Python, Django, Python Imaging Library (PIL/PILLOW)

Client-side: JavaScript, jQuery, AJAX, Handlebars, HTML, CSS

I implemented the full-stack architecture for this service. Technologies used for development were:

Server-side: Nginx, PostgreSQL, SQLite, Python, Django, Python Imaging Library (PIL/PILLOW), Node.js, Grunt.js, Handlebars Precompiler, PHP

Client-side: JavaScript, jQuery, AJAX, Handlebars, HTML, CSS

I designed and implemented the full-stack architecture for 15 landing pages (pixel-perfect HTML+CSS was implemented by another person).

Technologies used for development were:
Server-side: Nginx, Node.js, Grunt.js, Handlebars Precompiler, PHP
Client-side: JavaScript, jQuery, AJAX, Handlebars, HTML, CSS

This project was based on parsed US government insurance plans databases. It included a flexible filtering and adaptive cost estimation algorithm (factored in age, smoking factor, annual income, family members, and automatically calculated subsidies).

A course editor that allows the creator to construct educational steps with embedded videos, illustration images, formatted texts, and formulas.

The courses' portal includes flexible course access management (grouped access lists with tagged resources linkage) and running courses, with progress tracking included as well.

The detection engine is based on minutia points detection. Web-UI allows users to add new fingerprints and search the entire database by fingerprint images.

My work on this project included: automated email notifications, status tracking, and specialized tools like template insurance offering.

The tool helps web developers to validate JSON code, layout it in tree-based form, and navigate through collapsing tree branches.

Also, the tool supports simple installation to command line for Debian-based operating systems and macOS; users can use it on any local JSON script output, sending it automatically to a dynamically opened browser tab.

Online color filter tool for checking if a website is suitable for color-blind persons. URLs are filtered for multiple kinds of forbidden content, then dynamically rendered as an image with a color scheme generated according to color-blind modeling algorithms, including:

- Protanopia (red/green color blindness; anomalous red cones)
- Deuteranopia (red/green color blindness; anomalous green cones)
- Tritanopia (blue/yellow color blindness; anomalous blue cones)
- Greyscale/achromatopsia (quick check for all forms of colorblindness)

This tool optimizes the sprite loading technique that websites use. A user can drag-and-drop or select sprites from local storage and get them rendered as a single sprite container image with CSS snippets automatically generated.

This system allows users to specify custom questions to help distinguish clients' state. More than 15 websites are implemented on the same core system with specific questions and logic.

The system supports flexible configuration of question lists, answers variants, answer logic, and results' estimation logic, with dynamic report generation on the reason the system gives a certain result.

All data is dynamically analyzed and displayed as multiple layers as a specifically configured Google Maps widget. Zip-code regions are highlighted with detailed stats and hovering descriptions. Multiple tools with different analysis algorithms have been implemented.

A management tool designed for databases of at least 6 million data records (engine tested to perform well for up to 20 million records) with a dedicated storage server configured with optimal storage costs and management efficiency. An automatic conflicts' resolver was implemented with the flexibility to add further rules and resolve scenarios adding.

A web service for building online quizzes of different complexity, allowing custom questions types, dynamic content loading, branching, and individual reports evaluation. Quizzes could be integrated into any existing site. Dynamic integration with Google Analytics events and navigation actions are supported by the integration. Rich stats on quizzes fulfillment, places of quitting, and time-to-answer are being collected and reported daily via email table to all quiz-related managers. Binding to external stats was implemented, making complete funnel analysis possible. Admins are allowed to customize and tune reporting logic, questions content and influences, branching conditions, and more.

A flexible CMS supporting custom blocks layout, with SSR and rich SEO features list. Great page speed results and overall pages' rankings. Site admins have a UI to completely manage per-block content, combine blocks, copying, moving pages, and more.