Portfolio

Here are some of my major work and projects.

• Mar 2019 - May 2021

  Task Management Platform

  Architect/Developer

  A task management system inspired by Jira, developed from scratch and used by several companies.

  Base functionality

  • Task creation, assignment and tracking
  • Kanban and List view
  • Mobile version - PWA
  • Project management

  Technical information

  • Stack - Linux, Go, Dart, Nginx, PostgreSQL, Bash scripts
  • WebRTC chat & video
  • SPA with PWA support
  • Automated update/deployment process

  

  
• Mar 2016 - May 2021

  Hospital Information System

  CTO/Team Lead/Architect/Developer

  Medicframe – a fully web based software for management of all kind of activities in hospitals and outpatient care facilities.

  Base modules:

  • Patient’s EHR
  • Ambulatory
  • Hospitalization
  • Laboratory
  • Departments
  • Role based access and customization
  • Therapy - prescriptions and oncology cytostatics preparation
  • Warehouse management
  • Accounting
  • Reports

  Technical information:

  • Stack - Linux, Dart, Nginx, PostgreSQL, Bash scripts, C#
  • OS - Debian 10 minimal
  • Own managed datacenter infrastructure
  • SPA with PWA support
  • Isomorphic application - Dart (client and server)
  • Multiple API integrations with 3rd parties (SOAP, REST)
  • Internal API integrations (REST, gRPC)
  • Real time request/response monitoring
  • Digital signatures (eIDAS regulations)
  • Healthcare data parsers
  • DICOM viewer
  • Real time BI engine
  • Integration with OCR Scanner for ID documents
  • Hardware drivers (cache registers, analyzers, barcode printers)
  • Automated update/deployment process
  • In application cron like schedulers for different tasks
  • Connecting to external hardware using Raspberry PC's as middleware
  • Mission-critical software (hospitals get paid based on daily XML reports sent to the National Healthcare Institution)

  My biggest project - around 1 million loc - developed from scratch.

  Leading/coaching a team of 7 developers and hands on coding 40%/60%.

  Although it is web based the responsiveness of the application is near native thanks to the highly optimized way of imperatively building user interfaces and websocket communication. All assets are served in the most optimized way and the initial loading time is below 1 second. The project is in production and gaining customers.

  The software has the ability to collect data from all kind of analyzers (chematology, urine etc). Me and my team has written 13 different drivers for communication with such kind of devices, and other like barcode printers, cash registers etc.

  

  
• Jan 2012 - Mar 2016

  Smart Systems - Gym

  Lead Developer and Architect

  Fully automated fitness platform. Customers control almost everything with a bracelet.

  Base modules:

  • Automatic showers
  • Gym screen to track your activities
  • Intelligent lockers assignment using "best possible" algorithm.
  • Dance lessons tracking

  Technical information:

  • Hardware controller
  • OS raspberry PI
  • TCP communication

  

  
• Jan 2008 - Mar 2012

  Ecommerce and Warehouse Management System

  Software Engineer

  Modules:

  • Purchases
  • Sales and Orders
  • Inventory control
  • Manufacturing and planing
  • Multichannel commerce
  • Integrated Ecommerce website
  • Customers and Suppliers management

  This was my first big project.

  

  
• Mar 2002 - Jul 2004

  Bash automation script

  Junior Engineer

  Bash automation script for setup and management of IP addresses for a local internet provider

  • Adding new customers
  • Editing customers
  • Lock customer IP address with MAC address
  • Iptables rules for filtering traffic