Arthur Rotkis

Architected a music streaming system with a multi-database approach: PostgreSQL for catalog, Cassandra for playback logs, and MongoDB for playlists. Implemented full user account and playlist flow with BCrypt password hashing.

Delivered a complete REST API with over 50 endpoints covering 7 functional modules, in a team of 4 developers. Implemented JWT authentication with Argon2 hashing and granular permission-based authorization.

Integrated a legacy CNC machine to Siemens Insights Hub via MQTT, transmitting 6 electrical quantities through a Siemens SIMATIC IoT2040 gateway. Compared wired network latency with 5G connectivity across 1000 samples per condition, confirming a 34% difference with Mann-Whitney test.

Implemented the semantic analyzer (AST in TreeNode) of the Empress-Language compiler in a team of 5. Developed a pure Go web server for family photo album management and a medical care management system in C with 4 data structures.

Mentored 6 students in algorithms and data structures across 3 structured training sessions. Solved and documented dozens of competitive programming problems in C++, covering graphs and advanced structures.

Bachelor's degree in Computer Science, expected graduation in July 2027. Currently in the 7th semester, with a final project (TCC) in Go.

Technical degree in Industrial Automation, with a final project on an RFID access turnstile.