Sysadmin/Engineering HGW (Lisbon - Hybrid)

Claranet limited; Lisboa; On-site; EUR 48,000 - 68,000; Full time

Benefits offered by this job

Salary package

Professional growth opportunities

Job summary

Zohorecruit in Lisbon is seeking a Sysadmin/Engineering HGW for a hybrid role on our Talent Team. You will troubleshoot Linux-based Home Gateway Devices, review configurations, and perform root-cause analysis across complex networks.

Your responsibilities include debugging Linux systems, network diagnostics with Wireshark and tcpdump, and developing automation scripts in Python or Bash. Experience with OpenWRT and embedded Linux is valued.

Qualifications

• Strong Linux system experience with debugging, configuration and scripting.
• Solid TCP/IP networking knowledge and related services.
• Experience with network analysis tools like Wireshark/tcpdump.
• Strong analytical and problem-solving skills for root cause analysis.
• Excellent communication and documentation abilities.

Responsibilities

• Perform advanced troubleshooting of Linux-based Home Gateway Devices (HGWs).
• Conduct low-level Linux analysis including shell operations and memory usage.
• Investigate Wi‑Fi issues: coverage, interference, channel utilization, and performance.
• Reproduce customer-reported issues in labs and characterize them with logs and captures.
• Develop and maintain automation scripts (Python, Bash) to streamline testing and logging.
• Create and maintain technical documentation for processes and analyses.

Skills

Linux

Scripting

Networking

Troubleshooting

Communication

Tools

Wireshark

tcpdump

Job description

Sysadmin/Engineering HGW (Lisbon - Hybrid)

We're fastlearners, hard workers, natural collaborators... and weMake ModernHappen!

Our ambitionis to unlock the potential of our digital world so that organisationseverywhere can innovate and thrive securely. We aim to achieve this goal bybringing together the world’s most talented people and the most powerfultechnologies, combining them to address our customers' challenges and to buildsomething stronger together.

Rightnow, we are looking for a Sysadmin/Engineering HGW for a client on ourTalent Team.

Your responsibilities include:

• Performing advanced troubleshooting of incidents affecting Linux-basedHome Gateway Devices (HGWs), including fixed access networks, Wi-Ficonnectivity, and IP services.
• Conducting low-level analysis in Linux environments, including shelloperations, process management, memory usage, network diagnostics, andconfiguration review to identify root causes of issues.
• Investigating Wi-Fi-related problems such as coverage, interference,channel utilization, band steering, and performance degradation using metrics,packet captures, and diagnostic tools.
• Reproducing customer-reported issues in laboratory environments andcharacterizing them through technical evidence, including logs, networkcaptures, and performance metrics.
• Developing and maintaining automation scripts (Python, Bash, or similar)to streamline testing, evidence collection, log analysis, and operationalactivities.
• Creating and maintaining technical documentation, including processes,analyses, workarounds, and recommendations, ensuring knowledge sharing andtraceability across teams.

You must have:

• Strong hands-on experience with Linux systems, including debugging,system configuration, troubleshooting, and scripting (mandatory requirement).
• Solid understanding of TCP/IP networking concepts and related servicessuch as DNS, DHCP, routing, and network troubleshooting.
• Experience using network diagnostic and analysis tools such asWireshark, tcpdump, or similar.
• Strong analytical and problem-solving skills with the ability toperform root cause analysis in complex technical environments.
• Excellent communication and documentation skills.

We value:

• Knowledge of Wi-Fi technologies, including 2.4 GHz and 5 GHz networksand IEEE 802.11 standards.
• Experience with fixed access technologies such as GPON and DOCSIS.
• Scripting and programming skills, particularly in Python and Bash.
• Familiarity with OpenWRT and embedded Linux environments.
• Experience working in telecommunications, networking, or broadbandservice environments.
• A proactive mindset, attention to detail, and a passion fortroubleshooting and continuous improvement.

We offer:

• Integration into a dynamic and motivated team toperform the role.
• Additional training.
• Salary package in line with the responsibilitiesof the role.
• Professional growth and career developmentopportunities.