SOFTWARE
ENGINEER &
ARCHITECT
I build high-performance systems, low-level protocols, and scalable applications. As a software engineer and architect, I specialize in C++, C#, and Python — from design to production — with a focus on security and systems architecture.
Featured Highlights
Standalone high-performance data structures library: Robin Hood hash map, 64-bit packed keys, fingerprinted probes, SIMD (AVX2 / SSE2 / NEON); header-only, cache-friendly design.
Standalone archival tool: custom .flatpack file format (header, file table, payloads), optional zlib/LZ4/Zstd/Brotli and AES-256, CLI to pack and restore directory trees.
Standalone networking experiment: kernel module for a custom Ethernet EtherType, 10-byte header parsing, per-CPU debugfs statistics — not tied to the C++ libraries above.
Hard-coded assembler → machine code tool for a custom CPU architecture (fixed ISA): maps mnemonics to encoded bit patterns — educational, low-level compilation focus.
Compiler-style assessment: dataflow analysis on a rail network using a worklist fixpoint and bitset cargo sets — fixpoint propagation and compiler-inspired reasoning.
End-to-end EIK Race Management product (private codebase): Laravel powers the backend (registration, timing, event ops); C# services for RFID provisioning, reads, and timing with raw byte-level framing; hardware–embedded integration for timing lanes.
Driven by
Curiosity & Code
I'm Vanja Sretenović, a software engineer and software architect with a deep fascination for how things work at the lowest levels. My journey in technology started with a curiosity about system internals, which led me to specialize in C++, C#, and systems architecture.
LEARN MORE ABOUT MY JOURNEY
Technical Arsenal
Core
C++ C C# Python Kotlin Node.js Bash
Web & backend
TypeScript JavaScript jQuery Node.js PHP Laravel React Next.js
Systems
Linux Git CMake TCP/UDP Networking
Cloud & data
Docker AWS PostgreSQL MongoDB Redis MySQL
Security & crypto
AES RSA ECDSA Kerberos SHA-256
Hardware integration
RFID timing .NET / embedded Arduino ESP32 Raspberry Pi
AI & product
OpenAI LLMs Branding & SEO
Game dev
Unity Engine OpenGL
Ready to build
something great?
Whether you have a specific project in mind or just want to chat about systems architecture, I'm always open to new conversations.