Wireless Core Engineer Sr (Telecom)

Lower Colorado River Authority; Austin (TX); On-site; USD 137,000 - 167,000; Full time

Job summary

Lower Colorado River Authority seeks a Wireless Core Engineer Sr to architect and guard the LTE EPC and 5GC SA core functions for a private network serving critical Texas infrastructure. You will own live-core operations, manage traces, MOPs, configurations, and upgrades, and drive RCA and KPI initiatives.

The role focuses on roaming, provisioning, and expansion of the private network, with an emphasis on high availability, security, and isolation within CNIS/NFVI.

Qualifications

• Nine+ years of experience in network architecture, engineering, cybersecurity, or network systems design.
• Engineering, Computer Science, Information Technology or relevant field degree (or substitution per guidelines).
• Valid driver’s license.

Responsibilities

• Operate and maintain the Ericsson EPC CUPS stack on CNIS/NFVI (PCC, PCG, CCDM, CCSM, CCPC, CCRC, EM, EDA2).
• Capture and analyze traces (GTP-C/U, PFCP/Sx, Diameter, S1-MME/S1-U, NAS) and close RCA on attach, session, and 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 and support the NOC as the Ericsson core SME.

Skills

Ericsson CNIS

NFVI operations

Trace analysis

KPI monitoring

Core network SME

RCA leadership

Network architecture

Education

Engineering degree

Tools

CNIS tools

NFVI tools

Job description

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:

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Target Salary Range: $136,800 - $167,200/yr

Note: This pay range represents a general target and is not reflective of the full pay range. Offers to selected candidates are contingent upon various factors such as skills, experience and education.

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 [phone] or email [e-mail]. Reasonable accommodations will be determined on a case‑by‑case basis.