Network Communications Analyst – Research

Are you familiar with computer networks, interested in network security, and want to become an expert in network analysis? At GREYCORTEX, we are expanding our research team, where you will have the opportunity to make a significant contribution to improving our security product.

Mendel is a smart and practical network detection and response (NDR) solution that protects the network infrastructures of hospitals, banks, technology companies, and many other interesting sectors. Mendel processes large volumes of data from network traffic and uses algorithms and machine learning to find known and emerging security threats. In addition, it can do many other things – for example, show what’s happening in users’ networks or alert customers about bad settings of network elements and performance problems.

We are looking for a colleague for the position of

Network Communications Analyst – Research

Full-time position
Location: JIC, Brno-Medlánky, Czech Republic

About the Position

You will play a key role in network traffic analysis in our research team, led by network security expert Michal. You will learn the details of network protocols, work with network data, and uncover hidden relationships in complex network infrastructures. In addition, you’ll gain hands-on experience configuring and managing various network services and devices during simulations, allowing you to progress to become a top expert in network analysis.

Your Skills 

You are a great match for us if:

  • You have advanced knowledge of network protocols such as TCP/IP, DNS, HTTP, SMB, TLS, and others
  • You can use Wireshark and other analytical tools
  • You can identify and resolve configuration problems and security vulnerabilities in a computer network
  • You have experience in analyzing and interpreting large volumes of data with tools such as PowerBI or Qlik
  • You are comfortable working with Linux and the command line
  • You are proficient in Bash, Python, or other scripting languages
  • You have the basic knowledge of relational databases and SQL needed to extract data for your analyses
  • You are proficient in Czech and English at B1 level – you can work with technical documentation and communicate in an international team
  • You have a passion for information and network security and a desire to learn new methods of network analysis and protection, you enjoy coming up with new ideas and innovations

Nice-to-Have Additional Skills

  • Cisco Certified Network Associate (CCNA) or similar certification in networking technology
  • Knowledge of Suricata and the ability to create network threat detection rules
  • Experience with detailed network traffic analysis tools such as tshark, tcpdump, and tcprewrite
  • Experience with network simulators such as GNS3, which we use to test and simulate network configurations
  • Knowledge of versioning systems like Git

What We Offer

You can look forward to:

  • 5 weeks holiday + 4 sick days
  • Flexible working hours and home office
  • Annual salary bonus
  • Training allowance
  • Laptop
  • Flat rate for telephone
  • Meal allowance
  • English courses
  • Joint events like barbecues, sport, board games
  • Delicious coffee 🙂
     

If you think you are a great fit for this position, send us your CV to the email below, including a few lines explaining why we should hire you – even if you do not meet all our requirements.

We look forward to hearing from you!

Email: [email protected]
Tel: +420 602 732 467

By sending us your CV, you agree that GREYCORTEX s.r.o. can process your personal data for recruitment purposes. We will process your data in compliance with the current personal data privacy and processing legislation of the Czech Republic (101/2000 Sb.).