Network Security Specialist | SEB, Stockholm

SEB is a leading northern European financial services group and one of the largest IT employers in the Nordics. We are looking for an experienced and driven Network Security Specialist with a strong background in firewalls and network security. As the banking industry continues its digital transformation, secure and resilient network services are more critical than ever. Our engineers play a key role in protecting SEB's infrastructure while enabling innovation and business growth. If you are passionate about network security and want to work with large-scale, business-critical environments, this could be the perfect opportunity for you. We are now looking for a Network Security Specialist to strengthen our team, with a focus on Firewalls, Routing/Switching and proxy technologies. About the role Design, implement, maintain and continuously improve SEB's global firewall infrastructure. Manage and develop network security services, including firewall policies, rule reviews, segmentation and security architecture. Troubleshoot and resolve complex network and security incidents across firewalls, routing, switching and proxy environments. Collaborate with architects, security teams and infrastructure specialists to ensure secure and scalable network solutions. Support SEB's cloud transformation by integrating network security solutions across on-premises and cloud environments. Drive standardization, automation and operational improvements to increase efficiency and reduce risk. Participate in security reviews, change implementations and lifecycle management of network security platforms. To thrive in this role, we believe you have Required: Solid hands-on experience managing and troubleshooting firewalls in large enterprise environments. Strong knowledge of network security concepts, including: Firewall management Network segmentation NAT VPN technologies Access control policies Experience with routing and switching technologies Understanding of proxy technologies and secure access solutions. Experience working with complex and business-critical network infrastructures. Strong troubleshooting and analytical skills. Meritorious: Experience with automation and scripting using Python, Ansible or similar tools. Experience with cloud networking and security in AWS, Azure or GCP. Familiarity with Infrastructure as Code tools such as Terraform. Experience with Linux environments and Git-based development workflows. Experience in leveraging AI-powered tools to drive tangible improvements in operations, security, and automation. Relevant certifications such as Check Point CCSA/CCSE, CCNP, or equivalent. Experience of Network analysis What We Expect: A collaborative team player who enjoys sharing knowledge and learning from others. A proactive mindset with a strong focus on security, quality and operational excellence. Ability to work independently and take ownership of tasks and deliveries. Strong communication skills and the ability to collaborate across teams and technical domains. A genuine interest in continuously improving processes, security and operational efficiency. Availability Requirements: Willingness to participate in an on-call rotation during evenings and weekends. Participation in planned Service Windows and Contingency Tests throughout the year. What we offer Entrepreneurial Scandinavian environment International opportunities and working environment Attractive compensation and access to SEB staff banking with exclusive benefits Do you want to be part of SEB? It is our fundamental belief that inclusion and diversity is crucial for our future success. We strive to have an inclusive, value-driven culture where employees feel valued, respected, and involved irrespective of who they are, what they believe or where they come from. Since we select candidates continuously, feel free to send in your application today via the link in this ad, but no later than November 24, 2026. If you have questions about the position, please contact Kenneth Eriksson Ehlers, hiring manager, at kenneth.eriksson-ehlers@seb.se, but we will not process applications via email. Please be aware that our final candidates undergo background checks, a process that includes for example identity control, verification of qualifications, credit checks, company engagements and criminal records checks. In some cases, we also apply random drug checks. During employment, employees within SEB can also expect to undergo recurring background checks. SEB Sweden has a redeployment responsibility, why this position might be covered by internal redeployment. The employment is covered by collective agreements signed between Finansarbetsgivarna and Akademikerföreningen and between Finansarbetsgivarna and Finansförbundet. Learn more about working at SEB on our Career website or through our Career podcasts. sebgroup.com/career bit.ly/SEBcareer