Sysadmin/Engineering HGW (Lisbon - Hybrid)

Claranet limited; Lisboa; Hybrid; EUR 42,000 - 62,000; Full time

Job summary

Claranet Limited in Lisbon is seeking a Sysadmin/Engineering HGW on a hybrid basis to join our Talent Team. You will perform advanced troubleshooting of Linux-based Home Gateway Devices, including network services,Wi‑Fi issues, and diagnostics, delivering reliable, secure solutions.

Responsibilities include low‑level Linux analysis, shell operations, memory and network diagnostics, creating automation scripts in Python or Bash, and documenting processes for cross-team knowledge sharing.

Qualifications

• Experience with Linux systems, debugging and scripting.
• Strong understanding of TCP/IP networking and related services (DNS, DHCP, routing).
• Experience using network diagnostic tools like Wireshark or tcpdump.
• Excellent communication and documentation skills.

Responsibilities

• Perform advanced troubleshooting of incidents affecting Linux-based Home Gateway Devices (HGWs).
• Conduct low-level analysis in Linux environments, including shell operations and memory usage.
• Investigate Wi-Fi problems such as coverage, interference, and channel utilization.
• Reproduce customer-reported issues in lab environments with logs and captures.
• Develop and maintain automation scripts (Python, Bash) to streamline testing and analysis.
• Create and maintain technical documentation for processes and solutions.

Skills

Linux systems

Scripting

Networking concepts

Analytical thinking

Tools

Wireshark

tcpdump

OpenWRT

Bash

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.