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

Sii Poland; Białystok; On-site; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Great Place to Work

Centre of internal trainings

Profit sharing

Medical care

Job summary

Sii Poland is seeking an experienced IT security specialist to support and maintain security infrastructure and collaborate with IT teams globally. You will manage firewalls, VPN, and WAF, monitor security resource health, and provideLevel 1–2 support for incidents.

The role requires at least 5 years in IT security, hands-on experience with enterprise firewalls, Azure security tools, and SIEM, plus strong networking and scripting basics.

Qualifications

• Minimum 5 years of experience in IT security.
• Experience 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.

Responsibilities

• 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.

Skills

IT security

Firewalls

VPN

Networking

Automation scripting

English (B2/C1)

Travel willingness

Polish language

Tools

Palo Alto

Fortinet

Cisco ASA/Firepower

Azure Firewall

NSG

Azure Sentinel

Microsoft Defender for Cloud

SIEM

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