Network Security Engineer

Lognext; Madrid; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Technical training programs

Professional Development Plan

Flexible working hours

Team-building events

Job summary

Lognext, a leading tech services provider, is seeking a Network Security Expert to join a multinational financial sector client. You will manage production security platforms, firewall and load balancing architectures, and remote access technologies across Campus and Data Centre environments.

The ideal candidate has expert knowledge of network security with strong Python and Ansible automation, experience in Linux RHEL, DNS/DHCP, SNMP, and proxy management, and excellent English (B2).

Qualifications

• Expertise in network security technologies and high-availability environments.
• Hands-on firewall design, build, configuration and HA operations.
• Strong knowledge of load balancing, virtual servers, pools, persistence and iRules.
• Experience with DNS/DHCP, monitoring tools and SNMP alert configuration.
• Proficient in proxy management, architecture, design and policy management.
• Understanding of remote access platforms and remote gateway technologies.

Responsibilities

• Manage 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 and incident management including on-call coverage for Data Centre environments.
• Manage and implement technical changes following established change processes.
• Monitor service capacity to ensure networks meet business demand.
• Develop automation tooling with Python and Ansible to streamline tasks and improve integration with teams.
• Maintain communication with central teams regarding architecture and escalations.

Skills

Firewalls

Load balancing

DNS/DHCP

Monitoring tools

SNMP

Python

Ansible

Linux RHEL

Proxy management

Remote access technologies

English (B2)

Tools

Python

Ansible

FastAPI

REST APIs

Job description

At Lognext, we have spent 20 years helping companies such as Verisure, BNP Paribas and AXA solve complex technological challenges through high-performing expert talent that turns technology into business results.

We are looking for a talented Network Security Expert to join our team for a leading multinational company in the financial sector.

What are we looking for?

• 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.
• Strong interpersonal and communication skills, with the ability to work under pressure and report effectively to management.
• Good level of English, minimum B2.
• Essential: Firewalls, load balancing, DNS/DHCP, monitoring tools, SNMP, Python, Ansible, Linux RHEL, proxy management and remote access technologies.
• Desirable: Experience with REST APIs and Python web frameworks such as FastAPI.

What will your main responsibilities be?

• 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.
• Manage and implement technical changes in line with the team's established change processes.
• Monitor service capacity to ensure network services continuously meet business demand.
• Participate in projects involving the assessment and deployment of non-standard technical requirements.
• Ensure security requirements and established security designs are followed across all activities.
• 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.

What do we offer?

• Technical training, certifications and language programmes
• Professional Development Plan
• Flexible working hours
• Team-building and volunteering events

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. We work every day to create environments where everyone is treated with respect and dignity regardless of where they come from, and we do not discriminate based on race, religion or beliefs, ethnicity, disability, age, nationality, marital status, sexual orientation or gender.