Vanja SretenovicVanja Sretenović

About Vanja Sretenović

Systems‑oriented software engineer from Čačak, Serbia — focused on high‑performance C++ systems, Memory management and data structures, Database systems, Laravel and Node.js backends, and end‑to‑end product delivery with strong attention to reliability, performance, and clean architecture. I am also interested in AI and LLMs, and how they can be used to improve the development process.

Profile

I build dependable applications and developer tools across multiple ecosystems. I enjoy translating product requirements into well‑structured, type‑safe code and delivering complete solutions — from backend and systems work to frontend UX and deployment. I frequently work with C++/C# for desktop and high‑performance work, Python for scripting and data tasks, Node.js/PHP for backend and web applications, and JavaScript/TypeScript for web UI and frontend applications.

Current Work

  • Inery — Blockchain systems (Full time, Aug 2025 — Present): C++, Python, NodeJs, Bash, Linux servers, C#, MySQL, MongoDB and a blockchain decentralized database. Responsibilities include systems programming, server operations, data security, and tooling.
  • EIK Europe DOO — Part‑time (Aug 2025 — Present): race management solutions; hardware‑software integrations for RFID timing in C#/.NET, plus backend operations.

Past Work & Internships

  • Internship at Inery — Blockchain systems (Jul 2022 — Aug 2022): — C++, Python, NodeJs, Bash, Linux servers, C#, MySQL, MongoDB and a blockchain decentralized database. Responsibilities include systems programming, server operations, data security, and tooling.
  • Internship at ICraft Čačak — Mobile apps (Jun 2019 — Jul 2019): C, C++ development for mobile applications.
  • Parking Servis Čačak — Web systems (Jan 2018 — Aug 2018): PHP, MySQL, JavaScript, Linux servers.

Highlighted Projects

  • Flatpack (C++) — principal structures library focused on performance and memory safety.
  • Flatpack‑Archives (C++) — archival/serialization layer complementing Flatpack.
  • Race Platform (EIK Race) — Laravel backend for registration/timing and C# RFID hardware integration (eik‑race.com).
  • Octopullo — trip planning product led from brand and marketing/SEO to software delivery (octopullo.com).
  • Node Load Balancer — clustered Node.js HTTP proxy with IPC, React dashboard, Socket.IO realtime.
  • Dark Whale DDoS — Python project exploring TCP sockets and HTTP requests.

Skills & Domains

  • C, C++, C#, Python, Java, Kotlin, PHP, Bash
  • NodeJs, JavaScript, TypeScript, React, Next.js, Laravel, jQuery
  • Client‑server architecture, TCP/UDP sockets, Networking
  • Linux servers, SSH, Docker, AWS (Lambda, S3, DynamoDB)
  • SQL & NoSQL databases (MySQL, MongoDB, Redis, Postgres)
  • Data security & encryption (AES, RSA, ECDSA), Kerberos
  • Hardware‑software integration (RFID timing, .NET), NFC, Arduino, ESP32
  • OpenAI / LLMs and AI‑assisted tooling
  • Branding, Marketing & SEO for product growth (Basic knowledge)
  • English (B2+)
  • Serbian (Native)
  • Italian (Basic)
  • Driving license (B)

Education

  • Master’s in Software Engineering — in progress.
  • Faculty of Technical Sciences Čačak — BSc in Information Technologies (2019–2023, GPA 9.42).
  • Secondary Technical School Čačak — Information Technologies (2015–2019, 5.0).

Events

  • Jahorina Tech Conference (2024): presented a decentralized database solution.
  • FON Hackathon (2023): built a blockchain mobile app (React‑Native, NodeJS, C++, Eosio contracts) with a team on the theme “well‑being”.
  • TMRW Conference — Workshop Speaker (2023): presented a blockchain multi‑model decentralized database solution.