​Quarkslab is a high-end cybersecurity company, highly skilled in vulnerability research and design of security solutions for a tailored level of defense.
Malware are growing faster than one software can analyze: combine all detections together.
Drastically increase attack cost, reduce remediation to almost 0.
Code & Data obfuscation to protect everywhere.
Defensive security
  • Security developments: crypto, protocols, fuzzers, patch system for outdated programs.
  • Cryptography design.
  • On-demand R&D: anti-root, disassembler, custom probes for IRMA.
Offensive security
  • ​Vulnerability, patch and exploit analysis
  • ​Cryptography and DRM pentesting
  • ​Software assessment
  • Reverse engineering
  • Vulnerability research
  • iOS & Android pentesting
​We provide tailored services for profound technical issues to leverage your data protection.
As we work in sensitive environments we do
not disclose our clients’ references.
> ​Multiple CVEs reported to Apple, Adobe, Microsoft, Siemens, Samsung, etc.
> ​Regular speakers in international conferences
eg. HITB, Hack.lu, CSW, PacSec, SSTIC.
> ​Capacity to assess software security certified by ANSSI.
> Open assessment of the Chatsecure application.
​full-time employees
​mainly security
researchers and developers.
thesis in progress
We have 2 security engineer positions opened: time to move and work in a small but growing start-up based in Paris, France.
You can apply by sending an email at: job-AT-quarkslab-DOT-com.
Mobile Security Researcher
Description A Mobile Security Researcher position opened at Quarkslab. We are building new tools to analyze what is going on on our devices, from an ARM DBI to analyze framework via several techniques like Triton (http://triton.quarkslab.com) did. System audits must be taken to a new stage, as code base is growing faster and faster. New tools need to be designed to help the security researchers in their daily work.

In this job, you will have to audit applications, system components, fuzz, reverse, find clever tricks for both our customers and our own R&D in order to improve our internal tools.

The candidate can do remote working (preferably in France). Some travels are then to be expected.

Key Responsibilities
  • Develop internal tools for program analysis.
  • Specialised in mobile environment.
  • Conduct operating system, applications, protocols and database vulnerability research and pentests.
  • Direct contact with customer to fulfill our assigments.

  • In-depth knowledge of Android or iOS (from kernel to user land).
  • Programming language : Python and C/C++.
Low level Security Researcher
Description At Quarkslab, several of our projects are very low-level, working on bootloader, firmware or kernel for instance. We are also developing a brand new hypervisor, called Cappsule, performing what we call "on-the-fly" virtualization. The candidate will work for both our own projects and clients.
The candidate can do remote working (preferably in France). Some travels are then to be expected.

Key Responsibilities
  • Dig into low-level code
  • Help to improve our hypervisor
  • Conduct operating systems or applications vulnerability researches and pentests
  • Direct contact with customer to fulfill our assigments

  • Reverse analysis whatever kind of software
  • Programming language : Python and C/C++
  • Knowledgeable about virtualization
  • A good knowledge of OS internals would also be appreciated.