We are looking for a talented Network Security Expert to join our team for a leading multinational company in the financial sector. Expert-level profile with deep knowledge of network security technologies, strong analytical skills and the autonomy required to work within critical production environments. Solid hands-on experience with firewalls, including architecture, design, build and general configuration in high-availability environments.

Strong knowledge of load balancing, including configuration, troubleshooting, virtual servers, pools, persistence, monitoring and iRules.

Experience with DNS/DHCP, monitoring tools and SNMP alert configuration.

Experience in proxy management, including architecture, design, build, general configuration and policy management. Understanding of remote access and Remote Gateway platforms. Strong development and automation skills with Python and Ansible, together with good working proficiency in Linux RHEL environments. Good level of English, minimum B2. Firewalls, load balancing, DNS/DHCP, monitoring tools, SNMP, Python, Ansible, Linux RHEL, proxy management and remote access technologies.

Experience with REST APIs and Python web frameworks such as FastAPI. Manage the production, monitoring and engineering of network security platforms across Campus and Data Centre environments. Operate and support firewall, load balancing, DNS/DHCP, Internet access, proxy and remote access technologies.





Provide troubleshooting support and incident management, including on-call coverage for the Data Centre environment. Monitor service capacity to ensure network services continuously meet business demand. Participate in projects involving the assessment and deployment of non-standard technical requirements.

Manage technology obsolescence and continuously improve monitoring, documentation, procedures and operational best practices. Develop and maintain automation tooling using Python and Ansible to streamline recurring operational tasks and improve integration with other teams. Maintain close communication with central teams regarding architecture, major projects and technical escalations.

Ensure proper asset management and budget control. Technical training, certifications and language programmes Professional Development Plan Versátil working hours Join a team of Nexters solving real technical challenges through projects with a direct impact on leading international clients. At Lognext, we are committed to equality between women and men, as demonstrated by our registered and published Equality Plan.

We are nearly 400 Nexters from more than 25 different nationalities, and we believe this multicultural environment provides a valuable source of experience, knowledge and perspectives that adds value to our projects.

📌 Cyber Security Engineer | Remote (Madrid)
🏢 Lognext
📍 Madrid