Remote Security Engineer: Safeguard & Optimize Critical Systems

Closer Consulting; Lisboa; Remote; EUR 49,000 - 67,000; Full time

Job summary

Closer Consulting is seeking a Security Engineer to join the team in Lisbon, Portugal. The role targets 1–3 years in Systems Administration, with hands-on Windows Server and Linux experience and solid networking knowledge in enterprise settings.

Applicants should bring basic cybersecurity understanding, strong problem-solving skills, and English at B2 level or higher. The position supports remote work with a home office kit and a clear career plan with training opportunities.

Qualifications

• 1–3 years of experience in Systems Administration, Infrastructure Support, or a similar technical role.
• Hands-on experience with Windows Server administration and troubleshooting.
• Practical knowledge of Linux, including command-line usage and system diagnostics.
• Solid understanding of networking fundamentals (TCP/IP, DNS, DHCP, routing, and network connectivity).
• Basic knowledge of cybersecurity, including patch management, system hardening, and vulnerability management.
• Strong analytical and troubleshooting skills with a structured approach to problem-solving.
• English proficiency at B2 level or higher.

Skills

Windows Server

Linux

Networking fundamentals

Cybersecurity basics

Analytical skills

English proficiency (B2)

Tools

PowerShell

Bash

Python

Job description

Closer Consulting is seeking a Security Engineer to join the team in Lisbon, Portugal. The role targets 1–3 years in Systems Administration, with hands-on Windows Server and Linux experience and solid networking knowledge in enterprise settings.

Applicants should bring basic cybersecurity understanding, strong problem-solving skills, and English at B2 level or higher. The position supports remote work with a home office kit and a clear career plan with training opportunities.