Senior Network Engineer – BGP EVPN

h3Senior Network Engineer – BGP EVPN / VMware Cloud Foundation (VCF) Specialist /h3 pbLocation: Brussels, Belgium /b /p pbWorking Arrangement: On-site /b /p pbEngagement: 5 days (40 hours) /b /p pbStart Date: ASAP /b /p pbLanguage: English /b /p pbSecurity Clearance: NATO Secret preferred; Dutch police screening (B-Screening) may be sufficient /b /p pbDaily Rate: Negotiable /b /p h3Job Overview /h3 pWe are seeking an experienced Senior Network Engineer / Technical Consultant with a strong combination of advanced BGP networking, EVPN/VXLAN, and VMware Cloud Foundation (VCF) expertise to support a customer with a complex, multi-datacenter network infrastructure. The consultant will conduct a comprehensive health check of the existing spine-leaf network fabric, investigate network traffic black-holing during failover scenarios, validate Data Centre Interconnect (DCI) resilience, and review the integration between VMware NSX-T and the underlying network infrastructure. The ideal candidate will have deep hands‑on experience with BGP EVPN, VXLAN, Dell PowerSwitch networking, VMware NSX-T, and VCF deployments on Dell VxRail. /p h3Key Responsibilities /h3 ul liConduct a comprehensive health check of the existing spine-leaf network fabric across two datacenters. /li liReview and validate BGP EVPN and VXLAN configurations, including tenant VRFs and route propagation. /li liInvestigate VXLAN traffic black-holing when a border leaf loses all local DCI members despite a valid BGP path remaining through the VLT peer. /li liAnalyse DCI resiliency and verify traffic forwarding and failover behaviour across the VLT inter-chassis link. /li liValidate end‑to‑end network connectivity between VMware NSX segments, the spine‑leaf fabric, and endpoints behind the FortiGate 1100E firewall. /li liReview Dell OS10 firmware versions and Dell‑qualified network optics. /li liAssess VMware NSX Edge clusters across Test Acceptance and Production environments, including segment stretching between datacenters. /li liReview the existing DCI topology, identify unsupported configurations, and recommend a supported design aligned with best practices. /li liSupport the customer in validating the wider network infrastructure and VMware Cloud Foundation estate. /li liProvide technical recommendations to improve network resilience, redundancy, and overall infrastructure stability. /li /ul h3Technical Environment /h3 ul liNetworking: BGP, BGP EVPN, VXLAN, VRFs, spine-leaf architecture. /li liSwitching: Dell PowerSwitch S5232F-ON spine switches and S5148F-ON leaf switches. /li liNetwork Resilience: Data Centre Interconnect (DCI), Virtual Link Trunking (VLT), inter‑chassis links, redundant routing and failover. /li liVirtualisation: VMware NSX‑T, VMware Cloud Foundation (VCF), VCF on Dell VxRail. /li liNSX Integration: NSX Edge clusters, segment stretching, overlay networking. /li liFirewall: FortiGate 1100E. /li liFirmware and Hardware: Dell OS10 and Dell‑qualified optics. /li /ul h3Required Experience /h3 ul liExtensive hands‑on experience with complex BGP networking and BGP EVPN. /li liStrong understanding of VXLAN overlays, tenant VRFs, route propagation and troubleshooting black‑holing issues. /li liProven experience designing, troubleshooting and validating spine‑leaf network fabrics across multiple datacenters. /li liStrong knowledge of DCI architectures, VLT, redundancy and failover mechanisms. /li liPractical experience with VMware NSX‑T and its integration with physical network infrastructure. /li liExperience with VMware Cloud Foundation (VCF), ideally deployed on Dell VxRail. /li liExperience with Dell PowerSwitch platforms and OS10 is highly desirable. /li liAbility to perform independent technical assessments and provide clear recommendations on supported network designs and best practices. /li /ul h3Additional Information /h3 ul liThe engagement is expected to last five days (40 hours), with an ASAP start. /li liThe consultant must be available to work on‑site in Brussels, Belgium. /li liEnglish‑speaking candidates are suitable; there are no nationality restrictions /li /ul