Network Engineer, Mobile Core Network Services
vailexa • Bellevue, Washington
Posted: August 3, 2026
Job Description
Job Title: Network Engineer, Mobile Core Network Services
Location: Bellevue, Washington 98004
Onsite/Remote: Onsite (5 days/week) (Local Candidates)
Previous Cisco Experience Required: Needs to be extremely well-versed in all things Cisco / Cisco products
Position Overview/Role Summary:
Client is seeking an experienced Network Engineer to support testing, deployment, upgrades, and operational optimization within a mobile core networking environment. This role will focus on validating network solutions, supporting production implementations, consulting on network design, and providing technical expertise during large-scale network initiatives. The ideal candidate brings strong hands-on experience with mobile core technologies, network testing methodologies, and production network support.
Responsibilities:
- Provide technical guidance and advisory support for network enhancements, infrastructure upgrades, and architecture improvements.
- Collaborate with stakeholders to understand testing objectives, technical requirements, and business goals.
- Develop, execute, and document network test plans and communicate results through professional reporting.
- Support the design, implementation, and validation of laboratory environments, feature enhancements, and infrastructure upgrades.
- Create migration documentation and support activities associated with transitioning solutions from laboratory environments into production.
- Provide technical insight during escalation activities and collaborate with support organizations to accelerate service restoration.
- Consult on network architecture with emphasis on resiliency, scalability, performance, and service quality.
- Review and assess proposed network changes for risk, impact, and implementation readiness.
- Support major deployment events and assist with troubleshooting hardware and configuration issues.
- Share technical knowledge through documentation, informal training sessions, and knowledge transfer activities.
- Participate in recurring customer meetings, service reviews, and operational planning discussions.
- Contribute to operational reporting, risk assessments, and future planning activities.
Required Qualifications:
- Experience supporting mobile core network environments, including packet core technologies.
- Strong understanding of 5G networking concepts and call flow analysis.
- Experience developing and executing structured network testing plans.
- Ability to create technical documentation, including test reports, implementation plans, migration guides, and operational reports.
- Experience supporting production network deployments and infrastructure upgrade activities.
- Knowledge of network design principles including resiliency, scalability, fault recovery, and Quality of Service.
- Experience evaluating implementation procedures and conducting change impact assessments.
- Strong troubleshooting skills for network hardware, software, and configuration issues.
- Excellent verbal and written communication skills.
- Ability to work onsite during standard business hours (8 AM - 5 PM)
- Ability to participate in after-hours deployment activities and respond to critical incidents when required.
Preferred:
- Experience working within large enterprise or service provider network environments.
- Experience supporting laboratory to production migration initiatives.
- Previous experience delivering technical workshops, training sessions, or knowledge transfer activities.
- Industry certifications related to networking or telecommunications.
- Experience participating in customer-facing technical reviews and operational governance meetings.
Tools & Technologies:
- Cisco Enhanced Packet Core
- 5G Mobile Networks
- Network Testing and Validation Tools
- Packet Analysis and Troubleshooting Tools
- Network Monitoring Platforms
- Technical Documentation Tools
- Change Management Processes
Working Conditions
- Standard business hours coverage, 5 days per week; occasional overtime coverage may be required and must be approved.
- Onsite presence required; unplanned/unscheduled absences are not permitted without prior formal notice and approval.
- Planned absences (e.g., vacation) require advance written approval to avoid resource overlap.
Additional Content
Job Title: Network Engineer, Mobile Core Network Services
Location: Bellevue, Washington 98004
Onsite/Remote: Onsite (5 days/week) (Local Candidates)
Previous Cisco Experience Required: Needs to be extremely well-versed in all things Cisco / Cisco products
Position Overview/Role Summary:
Client is seeking an experienced Network Engineer to support testing, deployment, upgrades, and operational optimization within a mobile core networking environment. This role will focus on validating network solutions, supporting production implementations, consulting on network design, and providing technical expertise during large-scale network initiatives. The ideal candidate brings strong hands-on experience with mobile core technologies, network testing methodologies, and production network support.
Responsibilities:
- Provide technical guidance and advisory support for network enhancements, infrastructure upgrades, and architecture improvements.
- Collaborate with stakeholders to understand testing objectives, technical requirements, and business goals.
- Develop, execute, and document network test plans and communicate results through professional reporting.
- Support the design, implementation, and validation of laboratory environments, feature enhancements, and infrastructure upgrades.
- Create migration documentation and support activities associated with transitioning solutions from laboratory environments into production.
- Provide technical insight during escalation activities and collaborate with support organizations to accelerate service restoration.
- Consult on network architecture with emphasis on resiliency, scalability, performance, and service quality.
- Review and assess proposed network changes for risk, impact, and implementation readiness.
- Support major deployment events and assist with troubleshooting hardware and configuration issues.
- Share technical knowledge through documentation, informal training sessions, and knowledge transfer activities.
- Participate in recurring customer meetings, service reviews, and operational planning discussions.
- Contribute to operational reporting, risk assessments, and future planning activities.
Required Qualifications:
- Experience supporting mobile core network environments, including packet core technologies.
- Strong understanding of 5G networking concepts and call flow analysis.
- Experience developing and executing structured network testing plans.
- Ability to create technical documentation, including test reports, implementation plans, migration guides, and operational reports.
- Experience supporting production network deployments and infrastructure upgrade activities.
- Knowledge of network design principles including resiliency, scalability, fault recovery, and Quality of Service.
- Experience evaluating implementation procedures and conducting change impact assessments.
- Strong troubleshooting skills for network hardware, software, and configuration issues.
- Excellent verbal and written communication skills.
- Ability to work onsite during standard business hours (8 AM - 5 PM)
- Ability to participate in after-hours deployment activities and respond to critical incidents when required.
Preferred:
- Experience working within large enterprise or service provider network environments.
- Experience supporting laboratory to production migration initiatives.
- Previous experience delivering technical workshops, training sessions, or knowledge transfer activities.
- Industry certifications related to networking or telecommunications.
- Experience participating in customer-facing technical reviews and operational governance meetings.
Tools & Technologies:
- Cisco Enhanced Packet Core
- 5G Mobile Networks
- Network Testing and Validation Tools
- Packet Analysis and Troubleshooting Tools
- Network Monitoring Platforms
- Technical Documentation Tools
- Change Management Processes
Working Conditions
- Standard business hours coverage, 5 days per week; occasional overtime coverage may be required and must be approved.
- Onsite presence required; unplanned/unscheduled absences are not permitted without prior formal notice and approval.
- Planned absences (e.g., vacation) require advance written approval to avoid resource overlap.