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ThoughtBot

Network & Systems Engineer

ThoughtBot
Belgium · Contract · Not Applicable

Main Responsibilities


Network Architecture & Design

• Define and maintain network architecture standards using Aruba AOS-CX and Aruba Wireless solutions.

• Design scalable wired and wireless infrastructures for new sites, expansions, and major upgrades.

• Implement redundancy mechanisms such as VSF/VSX, dynamic routing, and high-availability configurations.


Implementation & Operations


• Deploy and configure Aruba CX switches, Aruba Instant APs, and Mobility Controllers.

• Manage the lifecycle of network equipment (updates, patches, migrations).

• Administer Aruba AirWave and/or Aruba Central for monitoring, performance analysis, and optimization.

• Ensure compliance with internal standards, security requirements, and operational procedures.

Access Control & Security

• Administer and maintain Aruba ClearPass (Policy Manager, Guest, OnBoard, OnGuard) for authentication and authorization.

• Develop and implement access control policies, device profiling, and network segmentation strategies.

• Support audit and compliance needs related to network security and access.

Troubleshooting & Incident Management

• Provide senior-level support for complex network incidents and performance issues.

• Conduct root cause analyses and coordinate corrective actions.

• Document incidents, solutions, and lessons learned.


Capacity, Performance & Continuous Improvement


• Monitor network capacity and recommend improvements to meet growth and performance needs.

• Conduct regular reviews of network status, configurations, and security levels.

• Identify opportunities for automation (Python, Ansible) and process optimization.

Collaboration & Knowledge Sharing

• Collaborate with infrastructure, security, workplace, cloud, and application teams on cross-functional projects.

• Provide technical guidance and mentoring to junior engineers.

• Maintain up-to-date documentation: diagrams, inventories, reference configurations, and operational guides.


______________________________

Required Technical Expertise


• Proficiency with Aruba AOS-CX switches, Aruba Wireless solutions, and ClearPass.

• Excellent understanding of L2/L3 concepts: VLAN, STP, OSPF/BGP, QoS, DHCP, and DNS.

• Experience with AirWave and/or Central for centralized management.

• Understanding of network security concepts (RADIUS/TACACS, NAC) and segmentation.

• Asset: Experience with Aruba EdgeConnect (SD-WAN).


Expected Behavioral Skills


• Ability to act as a technical lead on complex initiatives.

• Clear communication, structured documentation, and operational rigor.

• Proactive approach to identifying risks and areas for improvement.

• Sense of responsibility, autonomy, and teamwork.

Key Skills

Ranked by relevance

aruba wireless network security switches ansible python cloud dhcp vlan nac stp
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Posted
Dec 10, 2025
Type
Contract
Level
Not Applicable
Location
Brussels
Company
ThoughtBot

Industries

Government Administration Government Relations Services

Categories

Information Technology

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