Network Security and Firewall Engineer (f/m/x)

Sii Poland; Poznań; On-site; PLN 210,000 - 300,000; Full time

Benefits offered by this job

Great Place to Work

Profit sharing

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Medical care

Regular integration events and trips

Job summary

Sii Poland is seeking an experienced IT security specialist to join our global security infrastructure team in Poznań. You will support and maintain security components including firewalls, WAF, VPN, and collaborate with IT teams worldwide to ensure integrity and performance.

Responsibilities include monitoring resource health, providing level 1–2 incident support, maintaining documentation, and driving security operational improvements.

Qualifications

• Minimum 5 years of IT security experience.

Responsibilities

• Maintain security infrastructure components (firewalls, WAF, VPN).
• Monitor health and performance of security resources.
• Provide level 1–2 support for security incidents and requests.
• Collaborate with the security engineering team to enforce best practices.
• Maintain up-to-date technical documentation.
• Work with local and international IT teams for operational synergy.
• Contribute to continuous improvement of security operational processes.

Skills

Security expertise

English proficiency

Analytical thinking

Team collaboration

Scripting basics

Tools

Palo Alto

Fortinet

Cisco ASA/Firepower

Azure Firewall

NSG

Sentinel

Defender

SIEM platforms

Job description

We are looking for an experienced specialist to join the team responsible for global security infrastructure in the technology sector. In this role, you will support and maintain security components such as firewalls, WAF, and VPN, and collaborate with IT teams worldwide. Your tasks will also include monitoring the performance of security resources and ensuring their integrity. If you are passionate about IT security and want to work in a dynamic environment, this offer is for you.

Your tasks

• Maintaining and managing security infrastructure components such as firewalls, WAF, and VPN
• Monitoring and ensuring the health and performance of security resources
• Providing level 1 and 2 support for security-related incidents and requests
• Collaborating with the security engineering team to implement and enforce best practices
• Maintaining accurate and up-to-date technical documentation
• Working closely with local and international IT teams to ensure operational synergy
• Contributing to the continuous improvement of security operational processes

Requirements

• Minimum 5 years of experience in IT security
• Experience working with enterprise-class firewalls (Palo Alto, Fortinet, Cisco ASA/Firepower) and VPN, WAF, and IPS/IDS technologies
• Familiarity with Microsoft Azure security tools (Azure Firewall, NSG, Sentinel, Defender) and SIEM platforms
• Practical knowledge of computer networking (TCP/IP, routing, switching, VLAN) and basic automation in Python, PowerShell, or via API
• Very good command of English - level B2/C1
• Willingness to undertake a week-long deployment trip to Switzerland and collaborate in an international environment
• Analytical thinking skills, effective communication, and teamwork in a dynamic environment
• Required to be located in Poland and fluent in Polish

Nice to have

• Cisco CCNA/CCNP, Fortinet, Palo Alto PCNSE, CompTIA Security+ certifications

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care