• Design and deliver courses in programming, algorithms, data structures and software engineering.
• Teach large groups of students in both online and in-person formats.

• Act as court-appointed expert in software, web systems and digital evidence.
• Prepare detailed technical analyses and formal expert reports for civil and other court cases.

Design and development of cloud-based legal-tech and business systems.

Selected projects

• StratusBK – Bankruptcy case management system for attorneys with integration with US courts for automated case filing and case information gathering, finance management, document processing, CMS, CRM, calendar with case events, etc. (http://stratusintelligence.com)
• AccentInsights – Platform to manage and track public employee activities, helping managers retain team members and reduce retraining costs. (https://accentinsights.zencodeo.com)
• Customer Experience Enhancer – Modern, secure, cloud-based plug-and-play solution enabling multiple interaction channels with customers (phone, email, SMS, chat, web form), agent work tracking, agent management, detailed marketing reports and machine-learning-based optimization suggestions. (video)
• Delinquency Cases System – System for attorneys and creditors with extended information about US bankruptcy cases (Chapter 13), integrating several data providers into a unified platform for analysis and visualization.
• Court Calendar – Online system to download US court events and systemize them in an easy-to-use UI. (http://courtcalendar.azurewebsites.net)
• Semrad Portal – Client and employee web portal with information about cases, leads, appointments and marketing data. (https://portal.debtstoppers.com/)

• Delivered more than 350 lectures in Telerik Academy.
• Main architect of TelerikAcademy.com (http://telerikacademy.com): learning management system (LMS), test system, attendance system, forum system, anti-cheat system, certification system and others.
• Main architect and developer of BGCoder.com – Open Judge System (http://bgcoder.com, source code):
  • Web interface for users and administrators (ASP.NET MVC).
  • Windows service for compiling, executing and checking user submissions.
  • Restricted process executor using Windows APIs.
  • Compiler wrappers and custom checkers.
  • Anti-cheat system for detecting code similarity.
• Showcase System – http://best.telerikacademy.com, source code
• Trainer in Telerik Software Academy, Telerik School Academy, Telerik Algo Academy, Telerik Academy Plus.
• Co-author and editor of the book “Introduction to programming with C#” (Bulgarian and English) – http://www.introprogramming.info/.
• Video lectures: https://nikolay.it/Videos

Selected websites

• https://dela.bg (ASP.NET Core)
• http://musicx.mx (ASP.NET Core, Blazor)
• https://presscenters.com (ASP.NET Core)
• https://textbg.com (ASP.NET Core)
• https://nikolay.it (ASP.NET Core)
• http://rubixstudio.com (PHP)
• http://reprobiomed.eu (PHP)
• http://uniken.bg (PHP)
• http://vsepeta.com (PHP)
• http://ribarskatahija.com (initially PHP, later rewritten in ASP.NET MVC)
• http://managerteams.com – no longer active (PHP)
• http://prepishi.com – no longer active (PHP)
• http://vapostolov.eu – no longer active (PHP)
• http://agency-angel.com – no longer active (PHP)
• http://zamunda.info – no longer active (PHP)
• http://training-bg.net – no longer active (PHP)
• http://zvyn.com – no longer active (PHP)
• http://jaltici.com – no longer active (PHP)
• http://selectronic-bg.com – no longer active (PHP)
• http://aznepusha.bg – no longer active (PHP)

• Numerous open source projects: https://github.com/NikolayIT
• Learning management system: http://telerikacademy.com (closed source)
• Online judge system for programming competitions: http://bgcoder.com, source code
• BlogSystem written in ASP.NET Core: https://github.com/NikolayIT/nikolay.it
• Santase card game engine with AI, published in Microsoft Store: Store link, source code
• Texas Hold'em Poker card game engine: source code
• Belot card game engine: source code
• RatioMaster.NET: http://ratiomaster.net, source code
• NStudio: http://nstudio.nrpg.info – no longer active
• NRPG Skyper: http://skyper.nrpg.info – no longer active
• NPMG Salary – used by the administration of the National High School of Science and Mathematics for calculating salaries and printing documents
• AstroPlatform – project for the NASA Space Apps Challenge Bulgaria: source code
• tDNA (closed source) – project for Telerik Hackathon 2013: mobile app using Kendo Mobile and Telerik Backend Services with dashboard, news, statistics and data for Telerik employees from Active Directory

• Active participant in TopCoder algorithmic tournaments
• National Olympiad in IT (2007; 2008 – 1st place in IT test and 1st place in desktop applications project category; 2009 – 1st place in Internet applications project category)
• National Olympiad in Informatics (2006; 2007; 2008; 2009)
• National Autumn Competition in Informatics (2007; 2008; 2009)
• National Winter Competition in Informatics (2006; 2007; 2008; 2009)
• National Spring Competition in Informatics (2006; 2007; 2008; 2009)