Sr Core Services Engineer
Company: U.S. Cellular
Location: Schaumburg
Posted on: May 19, 2023
Job Description:
Sr Core Services Engineer - ENG002074
A Senior Core Services Engineer leads the design, integration,
engineering, and troubleshooting of infrastructure technologies
within the customer-servicing network, including: Enhanced Packet
Core (EPC) LTE, IP Multimedia Subsystem (IMS) VOLTE and all flavors
of DNS Services. This role serves as a Subject Matter Expert, who
has responsibility of implementing the infrastructure technologies
within the USCC customer-servicing network. This role is
responsible for overseeing the integration of technologies ensuring
operational readiness by creating and contributing to the Low-Level
Design. This role reviews architectural principles and high-level
design of the network platforms.
- Serve as one of the company's leading experts on LTE, VoLTE,
IMS, and RCS. Support industry advancements in technology and
standards applying them into USCC network environment.
- Provide an overarching engineering vision, comprehending
architecture, High level design to support network deployment
planning.
- Interfaces with the vendors' senior technical staff on
critical/escalated network and system and performance/capacity
related impairments.
- Ensure CIQs, RFPs and technical discussions are complete and
accurate for the deployment of new applications or
technologies.
- Define and support system requirements making recommendations
to improve network performance and capacity as well as reducing
costs.
- Actively mentors other engineering staff, effectively
demonstrate ability to work in a team environment to resolve
issues. Develop and deliver cross-training activities, participates
in a knowledge sharing environment
- Design, support, develop and review configuration management to
network elements assessing system infrastructure impacts.
- Defines changes and testing requirements providing guidance in
the implementation of Network Elements into an existing network and
for Lab verification.
- Serve as a subject matter expert on tools to perform,
troubleshoot, and decode packet captures of data sessions and
IP-based call flows.
- Leads interactions with partner organizations and departments
to ensure proposed solutions meet architectural and engineering
requirements based on industry best-practices. Creates and/or peer
review "Method of Procedure" documents for new engineering
changes.
- Drive the development of analytics and automations that improve
effectiveness, reliability and shorten deployment cycles of new
services.
- Bachelor's degree in related discipline and minimum 5 years
experience; or equivalent work or military experience
- Strong knowledge of IETF, GSMA and 3GPP standards
- Deep understanding of EPC LTE, IMS/VOLTE call flows and
Diameter/SIP protocols.
- Experience in re-engineering / process improvement to automate
tasks for operational purposes
- Excellent problem solving / analytical skills and knowledge of
analytical tools
- Excellent written and verbal communication skills.
- Excellent presentation skills demonstrated in front of large
audiences.
- Ability to create / define metrics that accurately reflect the
current state of a given process or operation
- Travel required
- Technical knowledge of all of the skills listed below:
- Software tool: SQL Plus, Perl, K Shell, C Shell, Bash, Tcpdump,
Snoop, Ethereal,
- Services: VoLTE/IMS/RCS, EPC DNS, 1XRTT/EVDO, SDN/NFV, Capacity
Management, IMS Call Session Control Function, Post Paid and
Prepaid charging platforms. Voice Switching platforms, OTA, WPS,
VVM, CALEA, Voicemail, IPVM, 3G/4G/5G data, VoLTE
enablement
- Service Infrastructure: Mobility Management Entity (MME), eNBs,
Home Subscriber Service (HSS), Packet Gateway (PGW), Signaling
Gateway (SGW), Prepaid Platforms, IMS/RCS with focus on Telephone
Application Server (TAS), Media Gateways and Controllers, PCRF, ALU
and Ericsson switching platforms.
- Hardware: UNIX Servers (HP, IBM, Sun), Tandem, x86, Cisco,
Nokia, Ericsson
- Cloud/VNF: Openstack, Kubernetes, Docker
- O/S & Network: HP/UX, Windows 2000/XP, TCP/IP, Routers,
Switches, Firewalls, Linux, BSD, IOS
- Network Protocols: IS41(WIN Triggers), SS7, TCP/IP, SNMP, SMTP,
UDP, Radius, PPP, Diameter, HTTP, HTTP2, JSON, GTPv2, SIP(H.323),
H.248(MGECO), DHCP, DNS (BIND), QoS, Jitter, 3GPPP interfaces and
LTE TS specifications
- Business Applications: SMART Trouble Ticketing
- Office Automation: Word, Excel, Outlook, PowerPoint, MS Teams,
WebEx
- Planning & Design: Microsoft Project, Visio
PREFERRED QUALIFICATIONS
- Masters Degree.
JOB : Engineering
UScellular is an EEO employer and gives consideration to qualified
applicants without regard to race/color/age/religion/sex/sexual
orientation/gender identity/national origin/disability/veteran
status, pregnancy or genetic information.
Keywords: U.S. Cellular, Schaumburg , Sr Core Services Engineer, Engineering , Schaumburg, Illinois
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