1. Fullstack web devDeveloping long living (years went by without plan to turn off) business information system is-sima.rs. From backend (PgSQL+PHP+...) to frontend (JS->JQuery->VUE) and everything in between (websocket server).2. SysAdminSetup, maintain and monitoring of servers infrastructure for is-sima.rs which consists of several different main web/db/file servers and others containing separated microservices.Administration, maintenance and backup of internal versioning control system.3. QATest lead. Developing internal infrastucture for QA team to develop, maintain, schedule various types of tests (unit, api, acceptance, ...) and analyzing pass/fail results.4. Mobile (android - hybrid)Lead developer of is-sima.rs mobile app which started from Apache Cordova and moved to NativeScript with full test coverage5. Desktop (multiplatform)Lead developer of is-sima.rs desktop helper application under Linux and Windows for file manipulation, messaging and notifications.6. LeadParticipating in analysis of current system and job requirements; distribution of jobs/tasks; coordinating through their lifetime until completion of every segment; technical and user-story review/control; mentoring and education.