Harris County · 22 hours ago
LMR Performance Engineer
Houston, TX
Full-time
Onsite
Senior Level
7+ years expHarris County Universal Services is transforming the way the County does business and is seeking a Land Mobile Radio (LMR) Engineer to join their team. The LMR Performance Engineer is responsible for the configuration, monitoring, maintenance, and operational integrity of Harris County’s Motorola digital trunked radio system, ensuring the availability and reliability of LMR services for first responders and public safety users.
Government Administration
Responsibilities
Administer a Motorola ASTRO® 25 system, including:
Zone Controllers, Prime Site Equipment, Site Controllers
RF Sites (Simulcast and ASR)
MCC 7500 Dispatch Consoles and logging recorder interfaces
Monitor system performance using Motorola-provided tools (e.g., Unified Event Manager, Performance Management, System Health Monitor, Unified Network Configurator)
Manage system alarms and escalate issues in coordination with Motorola’s System Support Center (SSC) as needed
Coordinate and perform life-cycle maintenance activities such as:
Firmware upgrades and software refreshes
Windows Server patching on Core and Prime site infrastructure
Routine fail-over testing of system redundancy (e.g., Prime/Secondary Zone Controllers)
Collaborate with Motorola Technical Support and Field Services during SR roll outs and major network enhancements
Participate in testing and fail-over exercises to verify system redundancy and reliability
Act as Tier III support for radio system outages, degraded performance, interference issues, and encryption/key management problems
Analyze RF issues using field test equipment (spectrum analyzers, service monitors, test sets) and software tools (Radio Management, Coverage Analysis)
Perform root cause analysis and produce after-action documentation for major system events
Assist in managing radio fleetmap templates, talk group configurations, and subscriber profiles through Motorola Radio Management or CPS platforms
Support radio programming initiatives, encryption key loading (KVL 4000, KMF management), and template distribution
Work with the engineering team on capacity planning, frequency coordination, and coverage improvement initiatives
Maintain accurate and up-to-date technical documentation including:
IP addressing schemes, VLAN assignments, topology diagrams
Change management records and SR implementation logs
FCC licensing records and frequency coordination documentation
Ensure compliance with best practices such as Motorola R56 grounding and site standards
Interface with system users (dispatch centers, field personnel, IT staff) to resolve issues, collect feedback, and provide guidance
Develop internal SOPs and training documentation for junior staff and system users
Participate in project teams for system expansion, site upgrades, or integration of new technologies (e.g., LTE interoperability)
Participate in on-call rotation and support emergency operations during major events or disasters
Serve as a technical liaison to Harris County departments, municipal partners, and outside agencies
Support interoperability testing with regional and mutual aid partners via ISSI/CSSI gateways
Collaborate with the Harris County Fire Marshal’s Office and Authority Having Jurisdiction (AHJ) on building radio coverage issues
Conduct or review in-building signal grid testing per NFPA 1225 and Safer Buildings Coalition standards
Qualification
Required
High School diploma or GED required
Minimum seven (7) years of technical experience in telecommunications or LMR systems administration and performance engineering
Experience with trunked radio systems (e.g., Motorola ASTRO 25, Harris P25) and conventional repeater systems
In-depth knowledge of P25 Phase I/II standards, trunking principles, and simulcast operation
Proficient in Motorola tools such as the Unified Event Manager, UEM Client, Fault/Performance Monitoring
Demonstrated understanding of radio frequency (RF) propagation, site engineering, and interference mitigation
Familiarity with radio programming software, network monitoring tools, and drive test analysis platforms
Knowledge of in-building radio solutions such as BDAs, DAS, fiber DAS, and passive RF components
Proven ability to troubleshoot RF issues across large-scale radio networks
Experience coordinating with first responders, dispatch centers, and public safety stakeholders
Excellent interpersonal and written/oral communication skills; ability to interact effectively with technical and non-technical stakeholders
Advanced proficiency in Microsoft Office Suite (Word, Excel, PowerPoint, Teams)
Strong organizational skills with attention to detail and the ability to manage multiple projects simultaneously
Ability to work independently and as part of a collaborative engineering team
Must possess a valid driver's license and be able to travel within the system's coverage area
Preferred
Associate or bachelor's degree in Telecommunications, Electrical Engineering, Information Technology, Computer Science, Information Systems, or related field is preferred
Ten (10) or more years of technical experience in telecommunications or LMR systems administration and performance engineering
Preferred familiarity with the Safer Buildings Coalition, NFPA 1221/1225, and local Fire Code requirements for public safety communications
Experience with Motorola Radio Management, CPS, and software tools for provisioning and diagnostics
Experience with IP networking principles, including VLANs, QoS, firewalls, and routing protocols
Familiarity with encryption technologies and key management protocols (e.g., KMF, OTAR)
Company
Harris County
Harris County focuses on transportation, public health, housing, justice and safety, the environment, and other issues.
10001+ employees
H1B Sponsorship
Harris County has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (2)
2022 (2)
Funding
Current Stage
Late StageLeadership Team
Craig B Atkins, CPA
CFO / Director of Financial Services
Araceli "Chely" Chojnacki
Front Receiving COORDINATOR
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