Vasil – Flutter, Dart, PHP

Mobile app for doctor and dental offices: management of the staff, management of the assets, regulatory checklist validation.

• Implement the project architect based on Clean Architecture);
• Implement the communication layer (RestAPI);
• Implement the full set of tests (Unit and Functional tests);
• Validation of the code according to the security.

Mobile application in Flutter for patients with health problems.

• Created the mobile app architecture;
• Specified the API communication (RestAPI);
• Validated the security of the whole app;
• Teached the team in Clean Architecture and TDD.

This is a platform that allows comprehensive management of assets and resources, including rooms, desks, and IoT sensors, within a multi-tenant environment.

• Designed the architecture for Flutter applications spanning mobile, web, and desktop platforms, employing Clean Architecture principles;
• Developed the backend architecture based on the Porto architectural pattern;
• Organized projects with comprehensive automated functional testing integrated into the CI/CD pipeline.

Few web applications, Android applications, Android API framework, iOS application, iOS API framework, and RoomPanel (Android custom hardware) are migrating to Flutter with a multilayer architecture (based on the Clean Architecture paradigm, advanced plugin management, and full unit and functional testing).

• collected all requirements;
• collected all existing functionality (web, Android, and iOS apps);
• designed the framework architecture;
• programmed the main framework;
• provided the templates for the architecture modules (domain, data, device & application layers);
• provided the templates for the design patterns (repositories, providers, data sources, mappers, dependency injection, etc);
• provided the templates for the plugins.

It is a leading platform for IT / HR / head hunting Main features:

• Advanced search possibilities;
• Big data set of candidates;
• Multiple levels of access (based on roles);
• pure API.

• created the architecture based on the old platform and the new requirements;
• separated the data in different PostgreSQL schemas;
• implemented PDF processing (extract the PDF content to text);
• implemented advanced full-text search;
• implemented address recognition in the PDF;
• implemented competencies recognition in the PDF;
• implemented search by distance (based on PostGIS);
• full tests coverage;
• pure API for the frontend.

It is the rewritten app in Flutter. The new version supports the latest Android and iOS versions and adds a few new ways to trigger an alarm by the protected user.

• created robust Flutter UI;
• created an advanced plugin system to communicate with the native platform (Android and iOS);
• developed advanced platform integrations (Siri on iOS, Google Assistant on Android) and flexible architecture (what alarm triggers to be used depends on multiple factors);
• created complex code based on the Clean architecture and functional programming best practices.

Android & iOS application for personal training. The challenges were to support all Android devices (from the very small to the ultra-big screens), low-end devices (used a sounds pool to control the memory usage on the device), support InCall during the training mode, and provide support for Google Analytics.

• provided full support for a wide range of devices - from very low-end to the ultra-high-end;
• performed clever memory management because of many sound resources;
• introduced a random generator for the training commands.

The platform allows clients to get their old videos in perfect quality processed by AI and experienced artist

• created the project plan based on the user requirements;
• implemented API platform;
• implemented the Paypal payment system;
• implemented the communication with the file processing service;
• implemented the frontend based on the client's design.

The platform offers a realtime notification & tracking for children, people with disabilities etc.

Main features are:

• Pure API (serving Android & iOS apps)
• SMS & Push notifications
• Realtime streaming and monitoring (for instant location etc)

• transformed client requirements into the project plan for the development process;
• planned and implemented the Backend requirements;
• planned and implemented the mobile apps (Android / Java, iOS / Swift);
• implemented the backend with full test coverage;
• implement an advanced notification system supporting different channels (Push notification, SMS, email, phone call).