About

Everything you need to know about this site and its author.

Who is this for?

Blog focused on real time networking, replication and game development.

About the Author

Hi, I’m Josip Petanjek, a Network Engine Programmer on various game engines.

My Experience

Network Engine Programmer · CROSKALANETFull-time · Jan 2026 – Present · Zagreb, Croatia (Remote)

Personal business, contracting to studios.

Network Programmer · PLAYERUNKNOWN ProductionsFull-time · Apr 2024 – Jan 2026 (1 yr 10 mos) · Amsterdam, North Holland, Netherlands (Remote)

Multi-network networking layer, supporting both an in-house networking library and Steam sockets. Multi-authority (multi-server) capable replication library, developed as an ECS system.

  • Preface: Undiscovered World — networking, replication and lobby logic
Network Engine Programmer · NetskaliranjeFull-time · Jan 2024 – Apr 2024 (4 mos) · Zagreb Metropolitan Area (Remote)

Personal business, contracting to studios.

Network Engine Programmer · Bohemia InteractiveFull-time · Oct 2021 – Jan 2024 (2 yrs 4 mos) · Prague, Czechia (Hybrid)

Enfusion Engine and Arma Reforger networking and replication.

  • Networking and replication systems
  • Network streaming
  • Server-authoritative vehicles
Epic MegaGrants Recipient · Self-employedJan 2021 – Sep 2021 (9 mos) · Varaždin, Croatia

Creation of a master's thesis on the next generation of networked gaming — NextGenNetGames on GitHub.

Skills

  • Engines: Unreal Engine, Enfusion Engine, Melba Engine
  • Replication: In-house replication libraries, including an ECS-based one, multi-server/multi-authority architectures, server-authoritative replication, streaming
  • Networking: In-house networking libraries, multi-network interfacing, Steam Sockets/Datagram Relay
  • Languages: C++

Services

I provide consultation and programming services. See my 2026 price list.

For the fiscal year 2026 I have very limited time left, as most hours have already been contracted out.

Contact Me

Please contact me at my LinkedIn.

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