Wireless Core Engineer Sr

Lower Colorado River Authority; Austin (TX); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Lower Colorado River Authority seeks a Wireless Core Engineer Senior to architect and manage LTE EPC and 5GC SA core functions for a private network serving critical Texas infrastructure. You will own live core operations, handle traces, MOPs, configuration, upgrades, and RCA.

The role demands deep expertise in Ericsson CNIS/NFVI and performance of KPIs across the core with strong security and reliability focus, collaborating with NOC teams, and driving continuous improvements to minimize

Qualifications

• Nine+ years of experience in network architecture, engineering, cybersecurity, or network systems design.
• Degree in Engineering, Computer Science, Information Technology, or related field; substitutions may apply per guidelines.
• Valid driver's license.

Responsibilities

• Operate and maintain the Ericsson EPC CUPS stack on CNIS/NFVI (PCC, PCG, CCDM, CCSM, PCRF, and more).
• Capture and analyze traces (GTP-C/U, PFCP/Sx, Diameter, S1-MME/U, NAS) and close RCA on attach and session failures.
• Author, validate, and execute MOPs for configuration updates and RAN additions with regression testing.
• Provision SIMs and subscribers; build and maintain private APNs.
• Monitor KPIs and alarms across the core and support the NOC as Ericsson core SME.

Skills

Network architecture

Engineering

Cybersecurity

Enterprise network design

Education

Engineering/CS/IT degree

Tools

Ericsson CNIS

NFVI

Job description

Here’s The Role

Are you the go-to SME when it comes to 4G/5G networks? If so, we are seeking to find a Wireless Core Engineer Sr to join our growing telecom team! In this role you will be the architect and guardian of the LTE EPC and 5GC SA core functions, powering a cutting-edge private network purpose-built for critical infrastructure across Texas.

Our network is built on a resilient, multi-tenant Ericsson Dual-Mode 5G Core hosted on CNIS and NFVI. We deliver mission-critical data, voice and interoperability services. High availability, cybersecurity, and isolation are engineered into everything we do!

As a key member of our team, you will drive our live- core operations, taking ownership of critical tasks like traces, MOPs, configuration, and upgrades. Your day-to-day will be managing KPIs and alarms, leading root-cause analysis (RCA), expanding the network and NOC support. Join our team today!

How You’ll Contribute

• Operate and maintain the Ericsson EPC CUPS stack on CNIS/NFVI: PCC (MME, SGW-C, PGW-C), PCG (SGW-U, PGW-U), CCDM, CCSM, CCPC (PCRF), CCRC, EM, and EDA2.


• Capture and analyze traces (GTP-C/U, PFCP/Sx, Diameter, S1-MME/S1-U, NAS) and close RCA on attach, session, user-plane, provisioning, and MCX/LMR failures.


• Author, validate, and execute Method of Procedures (MOPs) for configuration updates and RAN additions, implementing regression testing to ensure network stability.


• Provision SIMs and subscribers; build and maintain private APNs.


• Monitor KPIs and alarms across the core and support the NOC as the Ericsson core SME.

How You’re Qualified

• Nine or more years of experience in network architecture, engineering, cybersecurity, or network systems design, including large-scale enterprise environments, commercial carrier networks, or related field or other relevant experience.


• A degree(s) in Engineering, Computer Science, Information Technology or relevant field may be substituted per LCRA guidelines for certain years of experience.


• Driver's license

How You’ll Stand Out

• Hands‑on experience with this product stack.


• Proficient in Ericsson CNIS and/or NFVI operations, not only the NF GUI.


• Experience in critical‑infrastructure, utility, or public‑safety private LTE.


• Proficient in routing, firewall, and network engineering on the core edge.

How We’ll Support You

Benefits that don't just check boxes, they make life better. From healthcare to wellness to time off, we've got you covered, so you can focus on what matters. Discover More

Equal Opportunity Employer

• LCRA provides equal employment opportunities and a work environment free of discrimination and harassment. All employment decisions at LCRA are based on business need, job requirement and individual qualifications, without regard to race, color, religion, gender identity, national origin, age, disability, sexual orientation, genetic information, or veteran status in accordance with applicable federal and state legal requirements governing nondiscrimination in employment.


• LCRA is committed to working with and providing reasonable accommodations to job applicants with physical or mental disabilities. Applicants with a disability who require a reasonable accommodation for any part of the application or hiring process can contact LCRA Human Resources (512) 578‑4004 or email [e-mail]. Reasonable accommodations will be determined on a case‑by‑case basis.