Network and Security Test Engineer

Traffit; Katowice; Hybrid; PLN 179,000 - 207,000; Full time

Benefits offered by this job

Private medical care

Life insurance

Multisport card

Job summary

KUBO is seeking an experienced Network Test Engineer to join its engineering team in Katowice. You will design, develop, and run tests for industrial networking and security, focusing on Ethernet and IT/OT environments.

Hybrid work with 2–3 days in the Katowice office is offered, along with private medical care, life insurance, and a Multisport card. The role requires 5+ years in software or network testing, deep networking knowledge, and practical experience with Cisco Industrial Ethernet

Qualifications

• 5+ years of experience in software testing, network testing, or software development.
• Strong understanding of computer networks and communication protocols.
• Hands-on experience designing, implementing, troubleshooting and testing network solutions.
• Good understanding of IT/OT convergence and industrial networking environments.
• Experience with network security concepts, security testing, protocol fuzzing tools, and vulnerability analysis.

Responsibilities

• Design, develop, and execute functional and security tests for networking and communication modules.
• Test and troubleshoot complex network implementations and communication protocols.
• Create detailed test plans, test cases, and test scenarios based on product and system requirements.
• Design and build test environments for Ethernet and industrial networks.
• Perform functional and security testing using white-box, grey-box, and black-box testing techniques.
• Use security and network analysis tools to identify vulnerabilities and weaknesses.

Skills

Network testing

Security testing

Ethernet networks

IT/OT convergence

Test planning

English proficiency

Polish proficiency

Tools

Cisco Industrial Ethernet/Stratix switches and routers

Network analysis tools

Job description

We are looking for an experienced Network Test Engineer to join the engineering team of a global technology company specializing in industrial automation, control systems, and connected industrial solutions.

In this role, you will be responsible for designing, developing, and executing tests for industrial networking and communication solutions, with a strong focus on network security, Ethernet technologies, and IT/OT environments.

Key responsibilities

• Design, develop, and execute functional and security tests for networking and communication modules
• Test and troubleshoot complex network implementations and communication protocols
• Create detailed test plans, test cases, and test scenarios based on product and system requirements
• Design and build test environments for Ethernet and industrial networks
• Perform functional and security testing using white-box, grey-box, and black-box testing techniques
• Use commercial and proprietary security and network analysis tools to identify vulnerabilities and potential weaknesses
• 5+ years of experience in software testing, network testing, or software development
• Strong understanding of computer networks and communication protocols
• Hands-on experience in designing, implementing, troubleshooting, and testing network solutions
• Strong technical background in complex networking solutions and implementation strategies
• Good understanding of IT/OT convergence and industrial networking environments
• Professional experience with Ethernet network testing and designing network test environments
• Practical knowledge of networking technologies and protocols
• Experience with network security concepts, security testing, protocol fuzzing tools, and vulnerability analysis
• Understanding of theProduct Security Incident Response Team process
• Experience working with Cisco Industrial Ethernet / Stratix switches and routers
• Proficiency in English and Polish at a minimum B2 level

Conditions

• Contract type: B2B
• Rate: 130–150 PLN net/hour
• Work model: Hybrid (2 or 3 days per week from the office in Katowice)
• Benefits: private medical care, life insurance, Multisport card

At KUBO, we genuinely care about people. We welcome candidates of all ages, backgrounds, identities, family constellations, health situations, and ways of thinking and interacting with the world. You’re welcome to be yourself — we value authenticity, and we’re committed to creating a fair and inclusive process for everyone.