System Administrator/Engineering HGWs

Caixa Mágica Software; Lisboa; On-site; EUR 30,000 - 48,000; Full time

Benefits offered by this job

Health and Life Insurance

SIM Card

Personal smartphone

Social events and team buildings

Training in latest technologies

Coffee, fruits, snacks

Job summary

Caixa Mágica Software is seeking a Linux-focused engineer to join the Internet Services team in Lisbon. You will troubleshoot Home Gateways, analyze Linux systems, and enhance network performance using scripting and diagnostic tools.

The role emphasizes hands-on lab testing, documentation, and collaboration with multidisciplinary teams to drive digital transformation. A permanent contract and benefits are provided.

Qualifications

• Strong Linux knowledge (debugging/configuration) required.
• TCP/IP networking and debugging tools (Wireshark) essential.
• Wi‑Fi technologies knowledge (2.4/5 GHz) preferred.
• GPON/DOCSIS knowledge preferred.
• OpenWrt experience preferred.

Responsibilities

• Troubleshoot Linux-based Home Gateways, including Wi‑Fi and IP services.
• Perform low‑level Linux analysis (shell, processes, memory, networking).
• Analyze Wi‑Fi coverage, interference, channel use, and steering.
• Reproduce issues in lab and characterize using logs, captures, and metrics.
• Develop Python/Bash scripts to automate testing and analysis.
• Document processes, analyses, workarounds and recommendations.

Skills

Linux

TCP/IP

Wi‑Fi

OpenWrt

Scripting

Wireshark

GPON

DOCSIS

Tools

Python

Bash

Job description

A leading technology and innovation company, part of one of Portugal’s major telecommunications groups. With a strong focus on research and development, it designs and delivers innovative technology solutions and products, working closely with multidisciplinary teams and national and international partners. Its mission is to develop new technologies and experiences that contribute to the evolution of the industry and drive digital transformation.

This positiion is to join the Internet Servicesteam.

What will you do?

• Perform advanced troubleshooting of Linux-based Home Gateways (HGWs), covering fixed access networks, Wi-Fi, and IP services.
• Conduct low-level analysis in Linux environments (shell, processes, memory, networking, configurations) to identify symptoms and root causes.
• Analyse Wi-Fi issues (coverage, interference, channel utilisation, band steering, performance) based on metrics, packet captures, and diagnostic tools.
• Reproduce issues in a laboratory environment and characterise them using technical evidence such as logs, captures, and metrics.
• Develop and maintain scripts (Python, Bash, etc.) to automate testing, evidence collection, log analysis, and repetitive operational tasks.
• Document processes, technical analyses, workarounds, and recommendations, ensuring traceability and effective knowledge sharing.

What are we looking for?

• Strong knowledge of Linux (debugging, configuration, scripting, etc.) (mandatory)
• Knowledge of TCP/IP networking, related services (DHCP, DNS, etc.), and debugging tools (e.g., Wireshark).
• Knowledge of Wi-Fi technologies (2.4/5 GHz, IEEE 802.11) (preferred)
• Knowledge of fixed access network technologies such as GPON and DOCSIS (preferred)
• Knowledge of OpenWrt (preferred)

What can you expect from us?

• A permanent job contract for a long term project;
• Tech equipment + SIM Card + personal smartphone;
• Health and Life Insurance;
• Social events and team buildings;
• The commitment of letting you grow with us, and be rewarded accordingly;
• A dynamic and young team that will be always there to support you;
• Training in the latest technologies;
• Coffee, fruits, snacks and a warm welcoming when you pass by the office.