

Vatroslav Bodrozic
Verified Expert in Engineering
Multithreading Developer
Zagreb, Croatia
Toptal member since January 15, 2015
Vatroslav is a senior C++ engineer with 20+ years of experience across game engines, embedded systems, VoIP, cryptography, and real-time platforms. He specializes in performance-critical systems, engine architecture, and low-level debugging. Vatroslav is a Golden Codility Award winner and a long-term game engine developer.
Portfolio
Experience
- C++ - 14 years
- Standard Template Library (STL) - 10 years
- Design Patterns - 10 years
- Multithreading - 4 years
- Real-time Systems - 3 years
- TCP/IP - 3 years
- SIP - 2 years
- Boost - 1 year
Preferred Environment
Subversion (SVN), Visual Studio, Windows, Perforce, Git, C++
The most amazing...
...thing I've created is an artificial intelligence algorithm for chess strong enough to win against most casual players that I built at the age of 19.
Work Experience
Game Engine C++ Developer
Magic Media
- Developed features in a custom game engine to support adding and configuring entities at runtime.
- Reverse-engineered enemy graphics and audio data not present in level files, extracting it from engine binaries, storing it externally, and loading it at runtime for rendering and audio playback.
- Accomplished the previous task with almost zero bugs.
Game Engine C++ Developer
BeamNG
- Worked as a game engine developer on a car driving simulation game using C++ and Lua.
- Primarily focused on updating and maintaining external libraries such as CEF and ImGui.
- Wrote GitLab scripts for multi-platform builds (Windows, Linux, PlayStation, and Xbox).
C++ Developer
Croteam
- Worked as a game engine developer for many games based on the game engine.
- Ported games from Windows to numerous other platforms, including PlayStation, Xbox, Nintendo, Google Stadia, etc.
- Organized all required resources and managed through to the certification processes.
- Worked on optimization for high-level parts of the graphics engine.
C++ Developer
Envox Lab
- Worked on a distributed and scalable call center application in C++, STL, and Boost.
- Provided support for hundreds of servers and thousands of agents.
- Used the SIP protocol for session establishment over the internet.
- Worked asynchronously in a multithreaded environment.
C++ Developer
InfoSec Global
- Developed a secure VoIP framework and protocol by using OpenSSL, C++, STL, and Boost.
- Used the Elliptic Curve Diffie Hellman algorithm for shared key exchange.
- Used AES 256, RSA 2048, SHA 256 and X509 certificates.
- Used a proprietary protocol for establishing a secure connection and audio transfer.
- Used TCP and UDP protocols for message transfer.
CEO, Founder
Vatlab
- Developed my own toolkit for Facebook development in ASP.NET and PHP.
- Sold thousands of licenses for other developers and companies.
- Facilitated an unlimited license purchase by Epic Games Inc. (Unreal Engine).
- Worked as a consultant for Epic Games, Ferrari World, and other companies.
C++ Developer
AVL
- Created software used for testing of car engine prototypes of famous vendors (Mazda, Audi, Ferrari, etc.).
- Worked with C++, STL, and Boost on embedded real-time OS and Windows.
- Developed components working at 10k Hz inside a multi-threaded environment.
- Allowed shared memory and OS messages to be used for communication between 2 operating systems.
- Implemented design patterns, UML design and verification, unit tests, and code reviews.
Java Developer
RAO
- Worked on a central parking management system and company web portal.
- Used Java Server Faces as a web framework, Hibernate as a data access layer, and Oracle 11.
C++ Developer
Ericsson
- Developed a VoIP gateway, specifically H.323 and SIP protocols.
- Used C++ and STL on embedded real-time OS.
- Used TCP/IP (including UDP) extensively on high call frequency.
- Received numerous awards (monthly bonuses and salary increase) for my achievements at work.
- Mentored and supervised seven new employees to bring them on-board with C++, TCP/IP, OS, and VoIP.
Experience
Facebook Toolkits
Chess Engine
Operating System
Digital Circuits Simulator
Education
Master's Degree in Computer Science
Zagreb University Faculty of Electrical Engineering and Computing - Zagreb, Croatia
Skills
Libraries/APIs
Standard Template Library (STL), GDK, Facebook API, Sockets, OpenSSL, REST APIs
Tools
Microsoft Visual Studio, Eclipse IDE, Visual Studio, Subversion (SVN), Git, LINQ to SQL, Jira, Perforce, GitLab CI/CD
Languages
C++, C, C#, JavaScript, Java, PHP, CSS, HTML, SQL, Lua
Platforms
Xbox, Linux, PlayStation, Joomla, Android, Oracle, Windows, BlackBerry
Frameworks
ASP.NET, JSF, NHibernate, Boost, Hibernate, Unreal Engine, Chromium Embedded Framework (CEF)
Paradigms
Design Patterns, Real-time Systems
Storage
Microsoft SQL Server, MySQL
Other
Xbox Live, PS4, Embedded Systems, TCP/IP, Multithreading, Game Development, Networking, SIP, APIs, Cryptography, Encryption, DLL
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