Senior Network Engineer

The candidate will be responsible for the end-to-end physical deployment and logical validation of network infrastructure. You will be expected to diagnose issues across Layers 1 2 and 3 of the OSI model ensuring that physical connectivity aligns with logical configurations.

1. Advanced Device Racking & Mounting

• Precision Placement: Interpret and execute Rack Elevation Diagrams (REDs) to mount high-density chassis (Cisco Nexus 9k Catalyst 9500) and 1U/2U appliances.

• Mechanical Safety: Ensure proper use of rack rails cage nuts and stabilization kits. Manage weight distribution to maintain rack integrity.

• Power Sequencing: Connect dual-homed power supplies to diverse PDU sources (AB feeds) and perform pull tests to verify seating.

2. Structured Cabling & Fibre Management

• Fibre Optics: Expert-level handling of Single Mode (SMF) and Multi-Mode (MMF) fibre. Proficiency in cleaning connectors (IBC cleaners) and inspecting end-faces with fibre scopes.

• SFP/Transceiver Management: Correctly identify and install SFP SFP QSFP and QSFP28 modules. Troubleshoot link down issues by verifying wavelength compatibility (e.g. 850nm vs 1310nm) and light levels.

• Patching & Labelling: Execute high-density patching in accordance with ANSI/TIA-606-B standards. Ensure every cable is labelled at both ends with Near-End/Far-End information.

3. Patch Panels & Cross-Connects

• Circuit Extensions: Coordinate with Telco providers to extend circuits from the Meet-Me-Room (MMR) to the local rack via cross-connects.

• Patch Panel Termination: Manage copper (RJ45) and fibre (LC/SC/MPO) patch panels. Perform light-checks using Visual Fault Locators (VFL) to trace paths through multiple patches.

• Media Conversion: Deploy and troubleshoot media converters or transceivers when transitioning between different physical media types.

4. Remote Management & Console Access

• Out-of-Band (OOB) Setup: Configure and cable Terminal Servers (e.g. Opengear Lantronix or Cisco ISR) to provide permanent remote console access to all managed devices.

• Serial Connectivity: Troubleshoot baud rate mismatches roll-over cables and DB9-to-RJ45 adapters to ensure the NOC has a reliable backdoor during outages.

• Local Support: Be prepared to connect locally via laptop and serial-to-USB adapters to provide a live stream of boot sequences or BIOS-level troubleshooting.

5. Advanced Routing & Switching Knowledge

• L1 Fundamentals : Strong working knowledge in ethernet Gigabit Ethernet Serial fibre cabling transceivers (Arista Cisco SFP QSFP) SFP PIC NIM HA ports power supplies patching and troubleshooting with knowledge of DWDM and experience in handling 10/20/40 Gig Fibre links

• L2 Fundamentals: Configure and troubleshoot VLANs VTP and Spanning Tree Protocol (STP) Port mirroring packet captures. Must understand how to identify and resolve broadcast storms or physical loops at the rack level.

• L3 Fundamentals: Assist in the bring-up of Layer 3 interfaces (SVIs and Routed Ports). Basic knowledge of prefix lengths and IP addressing to verify gateway connectivity.

• Protocol Verification: Use CLI commands to verify BGP and OSPF neighbour adjacencies after physical circuit hand-offs or cross-connect installations.

• EtherChannel/LACP: Provision and troubleshoot Link Aggregation Groups (LAGs). Ensure that physical cabling matches the logical member-port configuration on the switch.

Required Experience & Skills

• Experience: 68 years in a Data Centre or large Enterprise campus environment.

• Ethernet Fibre cabling Hardware : Experience in installation of ethernet fibre cabling on Cisco Arista and Palo Alto F5 load balancers and its associated components like SFP PIC NIM DPC

• Routing and Switching: Ability to navigate Cisco IOS NX-OS PAN OS or Arista EOS to perform show commands and basic interface configurations.

• Tools: Proficiency with Visual Fault Locators (VFL) Light Meters and Fibre Inspection Scopes.

• Certifications: CCNA or equivalent is mandatory; CCNP Enterprise (ENCORE) is highly preferred to demonstrate routing and switching proficiency.

• Experience in handling mission critical network incidents/problems in Enterprise network Large campus networks and Data centre is preferred.

• Need to be proficient in English and local language (German)

If you are interested in the opportunity to work onsite with one of A&O IT Groups key clients carrying out a wide range of IT related services meeting a wide range of technical challenges and providing an excellent experience for our customers we would love to hear from you.

A&O IT Group
As a successful and growing global IT services provider A&O IT Group deliver fully managed IT solutions and cyber security services. Combining over 50 years expertise and boasting an extensive global network whilst remaining privately owned A&O IT Group is a trusted IT services partner to clients globally.

This role is subject to a post-offer Background Verification in accordance with the local country legislation.

Learn more about life at A&O IT Group and our opportunities on our website IT Engineer Careers page.

NO AGENCIES
We encourage diversity and seek to attract individuals with unique backgrounds and perspectives. It is important that we build a team with a diverse mix of people and skills where everyone feels welcome and able to succeed. We are committed to equal employment opportunity regardless of race colour religion sex sexual orientation age marital status disability or gender identity.