Dmitry Grachyov, Senior Software Developer in Astrakhan, Astrakhan Oblast, Russia
Dmitry Grachyov

Senior Software Developer in Astrakhan, Astrakhan Oblast, Russia

Member since October 30, 2016
Dmitry has nearly a decade of experience developing .NET and JS applications, including founding and doing research for semantic-oriented IDE Acodemica, which helps beginning programmers to efficiently learn software development, and developing the South African Tourism website. He has a passion for solving complex tasks involving sophisticated data structures, time-consuming algorithms, and the design of big systems.
Dmitry is now available for hire

Portfolio

  • Ei World
    C#, ASP.NET Core, Angular, Ionic 4, MongoDB, APIs, CSS3, Angular Material
  • Semantic Technology, LLC
    Slack, Entity Framework Core, JetBrains, OneSignal, Nginx, Composer...
  • Hellocomputer
    Slack, JetBrains, Twitter API, Apache Lucene, Nginx...

Experience

Location

Astrakhan, Astrakhan Oblast, Russia

Availability

Part-time

Preferred Environment

Ionic 4, SQL, Angular, .NET Core, Slack, JetBrains, Cross-platform, Agile, VCS

The most amazing...

...thing I've researched and coded is a rating algorithm calculating student competence level in solving programming tasks using a semantic-oriented approach.

Employment

  • Full-stack Developer

    2020 - PRESENT
    Ei World
    • Developed responsive mobile-first UI using Angular and SCSS.
    • Converted Angular web application to iOS and Android mobile application using Ionic 4 with single code-base for all apps.
    • Developed Excel reports for important client data that is used for analysis.
    • Integrated application with email, SMS, and Push Notification services and company CRM (SendGrid, Amazon Pinpoint, OneSignal, and HubSpot).
    Technologies: C#, ASP.NET Core, Angular, Ionic 4, MongoDB, APIs, CSS3, Angular Material
  • Founder, CEO

    2012 - PRESENT
    Semantic Technology, LLC
    • Created a semantic-oriented IDE academia for the web using Silverlight and WCF. It allows internet users to start learning programming in an interactive environment based on a semantic editor.
    • Created the semantic-oriented programming language Semantic. It contains the core paradigms of mainstream high-level programming languages—structural programming, procedural programming, object-oriented programming, and modular programming.
    • Developed a semantic language that allows the programmer to switch the program presentation to C, Pascal, Basic, Java, or Kumir syntax without needing program recompilation.
    • Researched educational technology to allow teaching and rating of programming competencies. The technology simulates teaching activities, from explaining tasks step by step, pointing out mistakes, showing hints to detailed checking, and rating.
    • Created an educational platform where teachers and schools can create and sell programming courses for major programming competencies or test students in solving programming tasks.
    • Created an educational web service for producing online courses for a Russian startup company, Edulance. The service allows the startup company to produce, advertise, and sell online courses in cooperation with online schools and individual authors.
    • Built a service called OkyLocky for creating and restoring complex and unique passwords.
    Technologies: Slack, Entity Framework Core, JetBrains, OneSignal, Nginx, Composer, Continuous Integration (CI), MacOS, Linux Servers, IIS, System Programming, PhpStorm, Dependency Injection, Bitbucket, HTML, Windows Presentation Foundation (WPF), Modular Development, Object-oriented Programming (OOP), Procedural Programming, Architecture, Cross-platform, PayPal API, YouTube API, Jira, Apache, Docker, MySQL, Windows Server, T-SQL, Angular, REST APIs, WebStorm, Git, NPM, Microsoft Visual Studio, Agile, Azure, Algorithms, Silverlight, Microsoft SQL Server, LINQ, Vue.js, CSS, JavaScript, .NET Core, .NET, JetBrains Rider, Sass, TypeScript, C#, UML, SQL, Angular Universal, Object-oriented Design (OOD), Systems Analysis, PHP, Yii 2, jQuery, ActiveRecord, Windows Communication Framework (WCF), C#.NET, APIs, CSS3
  • Full-stack Developer

    2017 - 2019
    Hellocomputer
    • Implemented best practices in system design and performance for Umbraco CMS Web API, including Lucene indexing, load balancing, CDN, image cropping, multi-threading, and data model normalization.
    • Refactored the UI kit to support component reuse in multiple sections and portals for a website for South African tourism, southafrica.net.
    • Optimized the card and card deck modules' performance to support scrolling of thousands of cards on desktops and mobile devices.
    • Built the menu, contact us bar and form, horizontal accordion, pills, article mosaic, cards, and transition effects for Generation Life, Australian leading specialist of tax-effective investment solutions.
    • Implemented GTM tracking and mail sending using SparkPost and SendGrid.
    Technologies: Slack, JetBrains, Twitter API, Apache Lucene, Nginx, Continuous Integration (CI), Load Balancers, Linux Servers, IIS, ApostropheCMS, Dependency Injection, Bitbucket, Modular Development, Object-oriented Programming (OOP), Procedural Programming, Content Delivery Networks (CDN), Architecture, Cross-platform, Less, SendGrid API, YouTube API, Facebook API, LinkedIn API, Google Maps, Redis, Express.js, Jira, Docker, Heroku, Node.js, Windows Server, T-SQL, Redux, Angular, REST APIs, WebStorm, Scrum, Git, SparkPost, NPM, Umbraco, Agile, Azure, Algorithms, LINQ, .NET Core, .NET, JetBrains Rider, Sass, TypeScript, UML, MongoDB, SQL, Angular Universal, Object-oriented Design (OOD), Systems Analysis, Bootstrap, jQuery, C#.NET, APIs, CSS3
  • Full-stack Developer

    2017 - 2017
    Amjad Ali (via Toptal)
    • Created a learning management system for web and mobile applications.
    • Created file sharing using APIs of Dropbox, Box, scalable to Google Drive, and OneDrive.
    • Created push notifications for both web and mobile applications using OneSignal API and deep links.
    Technologies: Slack, JetBrains, OneSignal, Nginx, Continuous Integration (CI), Linux Servers, PhpStorm, Dependency Injection, Modular Development, Object-oriented Programming (OOP), Procedural Programming, Architecture, Cross-platform, MySQL, Heroku, Angular, REST APIs, WebStorm, Git, NPM, Agile, Algorithms, JetBrains Rider, Ionic 4, TypeScript, SQL, Angular Universal, Object-oriented Design (OOD), Systems Analysis, PHP, Bootstrap, Google Drive API, Box API, Dropbox API, Ionic 2, Laravel, APIs, CSS3
  • .NET Developer

    2009 - 2012
    Astrakhan State Technical University
    • Created a semantic editor for abstract high-level programming languages using object-oriented design. The program was presented in memory as an oriented graph and saved to the file system as XML. The editor allowed only those actions that produce lexically and syntactically correct programs.
    • Created a static analysis tool which allowed users to search a semantic graph for semantic errors and save meta-information for future automatized refactorings.
    • Created a virtual machine that interprets programs as semantic graphs and transfers execution to .NET using IronPython DLR.
    • Created a framework that contains libraries to work with math, strings, files, random number generation, and system functions.
    • Created documentation about the language, semantic editor, and VM settings for students who are starting to learn programming in the semantic editor.
    Technologies: Entity Framework Core, JetBrains, MacOS, System Programming, Windows Presentation Foundation (WPF), Modular Development, Object-oriented Programming (OOP), Procedural Programming, Architecture, IronPython, Windows Server, T-SQL, Microsoft Team Foundation Server, Microsoft Visual Studio, Algorithms, .NET, C#, UML, SQL, Object-oriented Design (OOD), Systems Analysis, Dynamic Language Runtime (DLR), C#.NET

Experience

  • Ei World STARS (Development)
    https://stars-app.io/

    STARS is a tool for behavior change that can be tailored for organizations that want to invest in developing their people. Its proprietary five-component behavior change process puts the learner in the driver’s seat. Focus on learning the behaviors that matter to your success—built by experts in psychology, health, and team effectiveness. Any tool for change can provide information; STARS takes you on a journey of development.

  • South African Tourism (Development)
    https://www.southafrica.net/gl/en/travel

    The official website for the South African Tourism organization, a multinational and multilingual tourism website, built with Umbraco CMS Web API and Angular Universal.

  • Generation Life (Development)
    https://genlife.com.au/

    The renovated site of the pioneer of Australia’s first truly flexible investment bond, Generation Life, who have been at the forefront of providing innovative investment solutions for over 15 years. The site was built with Apostrophe CMS, MongoDB, jQuery, and SCSS.

  • OkyLocky (Development)
    http://okylocky.com/

    OkyLocky is a service for creating and restoring complex and unique passwords.

    OkyLocky creates a complex, very strong password from two simple ones: Master Password, the single, most important, and secret password which the user needs to bring up once and remember; and Key Password, a word that does not require memorization (e.g., the site that you need the password for).

    The protected password appears after the user types two passwords. It will be unique and always the same. This means that user can recover the protected password at any time and anywhere by opening OkyLocky and repeating the combination of a Master Password and Key Password.

    OkyLocky does not store and does not transfer user passwords. Passwords are generated only in the user client and immediately deleted after exit or 60 seconds of being idle.

  • Edulance (Development)
    https://www.edulance.ru

    An educational web service for producing online courses. Schools, training centers, and individual coaches are the end users of the service.

    It was developed from scratch using PHP and Yii 2 Framework for a Russian startup company of the same name.

  • 8 Solutions (Development)
    http://xn--8-jtbamfws9d.xn--p1ai/

    8 solutions help to solve problems in different areas by collecting a lot of solutions and selecting the most optimal one.

    It is developed as a hybrid MVC/API application, using PHP Yii 2, Angular, and Bootstrap.

  • Acodemica (Development)
    http://sem-tech.net/acodemica/

    An interactive platform for training competencies in programming and rating abilities and skills.

    It was developed by my startup company, Semantic Technology, LLC, using a big set of technologies and languages after a few years of scientific research in semantics.

    It uses a semantic-oriented approach to build the educational language and IDE, which mimics the major actions of a real teacher: transferring knowledge, explaining tasks step-by-step, pointing out mistakes, showing hints, and making detailed checks and ratings of the solutions.

Skills

  • Languages

    C#.NET, CSS3, HTML5, Sass, UML, JavaScript, CSS, HTML, PHP, C#, TypeScript, SQL, T-SQL, IronPython, Less
  • Frameworks

    .NET Core, .NET, Silverlight, Yii 2, Windows Presentation Foundation (WPF), Angular, Redux, Bootstrap, Entity Framework Core, Ionic 4, Ionic 2, ApostropheCMS, ASP.NET Core, Laravel, Express.js, Angular Material
  • Libraries/APIs

    LINQ, REST APIs, jQuery, SignalR, Google Maps, LinkedIn API, Twitter API, Facebook API, YouTube API, PayPal API, Gocardless API, SendGrid API, Box API, Dropbox API, Apache Lucene, Vue.js, Node.js, Google Drive API
  • Tools

    JetBrains, JetBrains Rider, Angular Universal, WebStorm, Microsoft Visual Studio, PhpStorm, NPM, Bitbucket, Git, Composer, Microsoft Team Foundation Server, OneSignal, Jira, SendGrid, GitLab, Apache, Nginx
  • Paradigms

    Scrum, Modular Development, Agile, Procedural Programming, Object-oriented Design (OOD), Object-oriented Programming (OOP), Dependency Injection, Continuous Integration (CI), Cross-platform, Test-driven Development (TDD)
  • Other

    APIs, Algorithms, Systems Analysis, Content Delivery Networks (CDN), Architecture, API Integration, SparkPost, Data Structures, System Programming, HubSpot, Pinpoint, AWS, Linux Servers, IIS, Load Balancers
  • Platforms

    Heroku, Windows Server, Azure, Umbraco, Docker, AWS EC2, MacOS
  • Storage

    Microsoft SQL Server, MySQL, MongoDB, Redis

Education

  • Master's degree in Information Science and Computer Engineering
    2011 - 2013
    Astrakhan State Technical University - Astrakhan, Russia
  • Degree in Computer Science and English
    2010 - 2012
    Astrakhan State Technical University - Astrakhan, Russia
  • Bachelor's degree in Information Science and Computer Engineering
    2007 - 2011
    Astrakhan State Technical University - Astrakhan, Russia

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