Qureos Mentor

CYREX

<div>Cyrex, a Magic Media company, is a media and tech start-up powered by creativity and innovation. We work with leading developers and publishers in the games industry, providing support and solutions designed around individual needs and carried out by global experts.
We produce high-quality results by constantly staying at the forefront of modern technology and cutting-edge processes and practices. The best of our team are known for their strong initiative, not just in taking care of their day-to-day responsibilities but in helping identify ways to build, grow, and do more in their work.
We&rsquo;re currently looking for a dynamic addition to the team to help work on exciting cybersecurity and development projects for the video games industry. The ideal candidate will work with cross-functional teams to develop critical products and services for our clients and offer excellent technical support to our teams. If you&rsquo;re an enthusiastic, motivated, and lateral thinker, our team is waiting to meet you!
This is a project based position, ideal for someone skilled in web security, mobile hacking, and basic cloud security. It does not require deep knowledge of reverse engineering or low-level networking.<h3 class="jobSectionHeader">
Responsibilities</h3><ul>
<li>Penetration testing of web apps, mobile apps and REST &amp; GraphQL APIs.</li>
<li>Review source code for security issues.</li>
<li>Assess mobile app protections (certificate pinning, jailbreak/root detection, code obfuscation) and backend integrations.</li>
<li>Produce clear reports with PoCs and remediation guidance; verify fixes.</li>
</ul>
Requirements<ul>
<li>
5+ years in web and mobile penetration testing.</li>
<li>Strong OWASP Top 10 knowledge.</li>
<li>Basic cloud security knowledge.</li>
<li>Manual testing first mindset, deep burp suite knowledge.</li>
<li>Reporting: clear flaws write-ups.</li>
<li>Source code review skills: sinks/sources, ability to spot misconfigurations.</li>
</ul><h3 class="jobSectionHeader">Working knowledge of</h3><ul>
<li>Basic python skills.</li>
<li>Frida, apktool, jadx</li>
<li>Burp suite plugins creation would be a plus.</li></ul>
Benefits<ul>
<li>
An opportunity to hone and improve your skills by applying them to a diverse variety of gaming projects</li>
<li>The chance to work closely with a team of like-minded creative professionals in a fast-paced, multicultural environment on a variety of gaming projects</li>
<li>A competitive salary</li>
<li>Ongoing training and professional self-improvement opportunities</li>
</ul>
If this sounds interesting to you and you&rsquo;d like to be at the forefront of cybersecurity, we&rsquo;d love to hear from you.</div>

Web Penetration Tester

<div>Cyrex, a Magic Media company, is a media and tech start-up powered by creativity and innovation. We work with leading developers and publishers in the games industry, providing support and solutions designed around individual needs and carried out by global experts.
We produce high-quality results by constantly staying at the forefront of modern technology and cutting-edge processes and practices. The best of our team are known for their strong initiative, not just in taking care of their day-to-day responsibilities but in helping identify ways to build, grow, and do more in their work.
We&rsquo;re currently looking for a Network Python Developer, a dynamic addition to the team to help work on exciting cybersecurity and development projects for the video games industry. The ideal candidate will work with cross-functional teams to develop critical products and services for our clients and offer excellent technical support to our teams. If you&rsquo;re an enthusiastic, motivated, and lateral thinker, our team is waiting to meet you!
What You Will Do:<ul>
<li>Develop and enhance functionalities within the Cyrex Protoceptor tool, focusing on intercepting and analyzing gaming protocol traffic.</li>
<li>Implement (de)serialization, sequence number tracking and packet injection mechanisms for custom gaming network protocols.</li>
<li>Provide technical support for penetration testing teams who use the Protoceptor tool.</li>
<li>Maintain and document Protoceptor tool.</li>
</ul>Requirements<ul>
<li>A technical or university level qualification, preferably in Computer Science. Equivalent combination of education and experience may be substituted.</li>
<li>Excellent written and oral communication skills (especially in the English language)</li>
<li>3+ years of writing products in python 3.</li>
<li>Understanding of endianness, hashing, checksums, encoding, encryption, signing, bitmasks.</li>
<li>Understanding of TCP/UDP mechanics, including packet fragmentation, sequence management, and multiplexing.</li>
<li>Knowledge of serialization techniques, including binary formats, variable-length encoding.</li>
Ability to read and understand big C++ codebases. 
<li>
</li></ul>A Working Knowledge Of:<ul>
<li>Familiarity with Unreal Engine networking, including RPCs and network object serialization.</li>
<li>Experience with crafting and tampering with network packets.</li>
</ul>Benefits<ul>
<li>Permanently remote position.</li>
<li>An opportunity to hone and improve your skills by applying them to a diverse variety of engaging projects.</li>
<li>Be part of an international group with offices worldwide.</li>
<li>Career growth and development.</li>
<li>Working closely with a team of like-minded people in a fast-paced, multicultural environment.</li>
<li>Ongoing training and professional self-improvement opportunities.</li>
<li>Flexible working hours.</li>
<li>An inclusive culture and open communication.</li></ul></div>

Network Python Developer

<div>Cyrex, a Magic Media company, is a media and tech start-up powered by creativity and innovation. We work with leading developers and publishers in the games industry, providing support and solutions designed around individual needs and carried out by global experts.
We produce high-quality results by constantly staying at the forefront of modern technology and cutting-edge processes and practices. The best of our team are known for their strong initiative, not just in taking care of their day-to-day responsibilities but in helping identify ways to build, grow, and do more in their work.
We&rsquo;re currently looking for a dynamic addition to the team to help work on exciting cybersecurity and development projects for the video games industry. The ideal candidate will work with cross-functional teams to develop critical products and services for our clients and offer excellent technical support to our teams. If you&rsquo;re an enthusiastic, motivated, and lateral thinker, our team is waiting to meet you!
This is a project based position. The role requires strong low-level technical skills, such as C++ programming, working with network protocols, or reverse engineering. If your experience is mainly in web hacking, you should instead apply for the on-demand penetration testing position, which focuses more on web security.<h3 class="jobSectionHeader">
Responsibilities</h3><ul>
<li>Reverse engineer game binaries and networking to map protocols.</li>
<li>Bypass client-side protections (SSL pinning, anti-cheat, packing/obfuscation).</li>
<li>Build PoCs and tools (hooks, loaders, traffic replayers).</li>
<li>Collaborate with developers and security engineers to analyze network protocols.</li>
</ul>
Requirements<ul>
<li>
Proficient in C++, C#, assembly, and Win32 API.</li>
<li>Working knowledge of Python.</li>
<li>Experience with IDA/Ghidra, x64dbg/WinDbg/LLDB.</li>
<li>Skilled in static and dynamic reverse engineering.</li>
<li>Capable of capturing, decrypting, and replaying network traffic.</li>
<li>Strong understanding of x86/x64/ARM/ARM64 (calling conventions, ABIs, compiler artifacts).</li>
<li>Familiar with VMProtect, Themida, custom VMs, and il2cpp bridges.</li>
<li>Able to analyze protected APKs and IPAs.</li>
</ul><h3 class="jobSectionHeader">Working knowledge of</h3><ul>
<li>Android: Frida, Magisk, LSPosed, ART/JNI hooks, split APKs, packer evasion.</li>
<li>iOS: Frida, cycript, r2frida, trust cache/entitlements, ARM64e/PAC, IPA signing.</li>
<li>Game Tech: UE4/UE5 (UE4SS), Unity, dnSpy, il2cpp.</li>
<li>Networking: Wireshark, mitmproxy, Scapy.</li></ul>
Benefits<ul>
<li>
An opportunity to hone and improve your skills by applying them to a diverse variety of gaming projects</li>
<li>The chance to work closely with a team of like-minded creative professionals in a fast-paced, multicultural environment on a variety of gaming projects</li>
<li>A competitive salary</li>
<li>Ongoing training and professional self-improvement opportunities</li>
</ul>
If this sounds interesting to you and you&rsquo;d like to be at the forefront of cybersecurity, we&rsquo;d love to hear from you.</div>

Game Reverse Engineer

Join CYREX and explore 3   exciting career opportunities. They're hiring for various roles with options for remote or on-site work. Apply today and become part of their innovative team.

CYREX

ABOUT_COMPANY

Web Penetration Tester

Network Python Developer

Game Reverse Engineer