Security Researcher

Cato Networks · Prague, Czech Republic

  • Junior
  • Full-time
  • Posted 2026-03-18
  • Confirmed live on 25 September 2026

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Job description

Welcome to the future of cloud networking and security!

Cato Networks is the first company to converge enterprise networking and security into one centralized and global service that is delivered by cloud. It is led by networking and security pioneer Shlomo Kramer (Check Point, Imperva) and early investor (Palo Alto Networks, Exabeam, Trusteer and more). Cato’s unique technology inspired a brand-new product category, later named “SASE” by Gartner and a market expected to reach $28.5 billion by 2028.

This is your opportunity to get on the rocket ship and join a company that is building a cutting-edge enterprise network and secure cloud platform, and is on a fast track to becoming the worldwide market leader – don’t miss it!

We are looking for proactive, analytical talented people to join our Cato Network Security Content team.
As a Security Researcher (Network & Apps research) you will research and investigate Network protocols and application traffic (L4-L7) using modern big data analysis frameworks, as well as network and web analysis tools (Wireshark, Fiddler, BurpSuite, DevTool).

You will be responsible for shaping and creating content signatures to Cato’s security and network products such as NGWF, CASB, DLP, iOT/OT Security and more.
Joining Cato is an excellent opportunity for network security enthusiasts who are passionate about the future of Networking and Security

Responsibilities:

• Research and analyze network and application behavior as part of Cato Network’s Security products (NGFW, CASB, DLP and more).

• Solving customers' problems and pains.

• Focus on delivery fast at scale.

• Suggest and conduct new research vectors

• Utilize Cato’s Data Warehouse with big-data technologies to support your work

• Automate your work to improve efficiency

Requirements:

• 3+ years of hands-on as an analyst/researcher experience in the cyber/security/network industry

• Knowledge of networking architecture, OSI model, and protocols (TCP/IP, DNS, TLS, HTTP) - a must

• Experience with LLM-based coding workflows OR expertise in at least one scripting language such as Python (Pandas, NumPy) - a must

• Experience with signature development for IPS or Firewall - big advantage

• Experience with SQL or data analysis tools – big advantage

• Experience (Hands-on) with Wireshark and PCAP analysis or similar tools

• Excellent English and communication skills

• Team player, responsible, and well-organized

*We operate in a hybrid model, requiring three days in the office.

*Location: NR7, Náměstí republiky, Prague, Czech Republic

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