Joyce Nabagereka
Phoenix,AZ
Summary
Network Engineer with 8 years of experience designing, deploying, and supporting enterprise and data center networks - currently in a PCI-scoped payments environment spanning US and UK sites. Deep routing and switching background across BGP, OSPF, and EIGRP on Cisco IOS-XE and NX-OS, with hands-on ownership of Cisco Catalyst SD-WAN (vManage/vBond/vSmart) and Nexus 9000 infrastructure. Experienced leading hardware refreshes and overnight production cutovers under formal change control, and serving as network lead on major incident response.
Overview
1
1
Certification
9
9
years of professional experience
Work History
Network Engineer
FreedomPay
Phoenix, USA
02.2024 - Current
- Migrated both production edge routers at the Phoenix data center from end-of-life ASR1001-X to Cisco C8500-12X - converted and validated full configurations (BGP, GRE, OSPF, EIGRP, ACLs, route-maps, licensing), then executed back-to-back overnight cutovers on a network carrying live payment traffic with no rollback required.
- Managed Cisco Catalyst SD-WAN environment: vManage/vBond/vSmart controllers and 10-device cEdge fleet across five US and UK sites. Executed staged multi-night controller upgrades from 20.9.x to 20.15.x for CVE remediation, adhering to Cisco sequencing requirements without TAC engagement.
- Maintain eBGP peering with Cogent, Verizon, Lumen, and INAP across the Phoenix and Philadelphia edge, handling full Internet tables of ~1M prefixes; turn up new transit and partner peerings and resolve path-selection and reachability issues.
- Led Nexus 9000 hardware refreshes across the Phoenix core and aggregation layers (93180YC-EX to FX3), including VLAN migrations, BGP/OSPF routing cutover, and remediation of NX-OS 9.x to 10.x behavioral changes ahead of the maintenance window.
- Delivered new carrier circuits end to end, including 10G inter-datacenter link, coordinating cross-connects, demarc extensions, and field dispatches with Cogent, Verizon, and Digital Realty to ensure seamless connectivity.
- Acted as network representative on major incident bridges, triaging ASA and Palo Alto HA failovers, BGP reachability alerts, and application-layer escalations using ThousandEyes, PagerDuty, Splunk, and Dynatrace to facilitate rapid issue resolution.
- Deliver all production changes through formal change control in a PCI cardholder data environment, authoring deployment steps, validation criteria, and rollback plans for compliance and management approval.
Network Engineer (Contract)
Cox Communications
02.2023 - 01.2024
- Provisioned and configured aggregation routers, switches, and optical access equipment supporting Ethernet, SONET, and voice transport for enterprise customers.
- Delivered complex Carrier Ethernet services (EPL, EPLAN, EVPLAN) end to end, working directly with customers through integration, test, and acceptance.
- Executed access transport maintenance, managing changes, migrations, upgrades, and disconnects to ensure timely service fulfillment.
- Utilized Remedy, NetSmart, NSP, Granite, Blue Planet, and SecureCRT to implement and validate increasingly complex circuits at customer sites.
Network Support Engineer
Lahey Hospital and Medical Center
12.2019 - 02.2023
- Installed, configured, and troubleshot routers and switches to ensure reliable operation of clinical and administrative systems in hospital and medical center environment.
- Monitored network performance, analyzing and tuning systems to maintain uptime critical for patient care.
- Resolved escalated hardware, software, and connectivity issues for internal staff and external users, coordinating vendor escalations to ensure timely resolution.
- Maintained network configuration standards, documentation, and change records across the estate.
Network Technician
Celtic Angels Inc.
12.2017 - 12.2019
- Assisted network engineers with installation of Cisco switches (3750, 3850) and routers (ISR 4300, 4400) to enhance network infrastructure.
- Monitored network performance through ticketing and alerting tools, ensuring timely resolution or escalation of incidents within defined SLA windows.
- Oversaw hardware RMA processes, including device staging and lab validation before production deployment to ensure operational readiness.
- Participated in off-hours outage response and service restoration efforts.
Education
Bachelor of Science -
Makerere University
Kampala , UgandaSkills
- Routing & Switching — BGP (eBGP/iBGP, full Internet tables, route-maps, prefix-lists), OSPF, EIGRP, route redistribution, static routing, VLANs, STP, VTP, vPC, EtherChannel/LACP, inter-VLAN routing, HSRP/VRRP/GLBP
- SD-WAN — Cisco Catalyst SD-WAN (vManage, vBond, vSmart), cEdge fleet management, controller and edge software upgrades, CLI/feature templates, VPN and VRF design
- Firewalls & Security — Palo Alto (Panorama), Cisco ASA, Cisco Firepower (FPR2120), IPsec VPN, ACLs, NAT, PCI DSS change control
- Routers — Cisco C8500, C8300, ASR1001-X, ISR 4331/4400, 2900/2800
- Switches — Cisco Nexus 9300 (93180YC-EX/FX3), Catalyst 9200/9300, 3850, 3750, 2960-X, 4500-X
- WAN & Connectivity — MPLS, Carrier Ethernet, GRE, LTE, carrier circuit delivery and cross-connect coordination
- Monitoring & Ops — ThousandEyes, SolarWinds, Splunk, Dynatrace, PagerDuty, ServiceNow, Remedy, Azure DevOps
- Carrier Ethernet
Certification
- CCNP Enterprise (ENCOR)
- CCNA - Cisco Certified Network Associate
- CompTIA Network+
- AWS Certified Cloud Practitioner
Timeline
Network Engineer
FreedomPay
02.2024 - Current
Network Engineer (Contract)
Cox Communications
02.2023 - 01.2024
Network Support Engineer
Lahey Hospital and Medical Center
12.2019 - 02.2023
Network Technician
Celtic Angels Inc.
12.2017 - 12.2019
Bachelor of Science -
Makerere University