Luis Miranda
Luis Miranda

Technical Customer Support Specialist

Open to offers · Member since 7 Sep 2026
Message
Location
Algarrobo, Chile
Desired salary
Confidential
Work preference
Remote Only / Full Time, Part Time, Contract, Freelance, Temporary
Experience level
Mid

About

Professional summary

I am a senior technical support engineer with 25 years of experience in telecommunications, voice platforms, network engineering, and carrier-scale subscriber services.

I specialize in diagnosing faults, analyzing logs, troubleshooting voice and telecom platforms, and investigating SIP, VoLTE, HSS/HLR, and IP telephony issues. My experience includes BroadWorks/Cisco, Ericsson HSS Provisioning Gateway, SBCs, and hosted PBX environments.

I have hands-on experience using SoapUI to execute provisioning requests, validate responses, manage subscriber profiles, enable VoLTE parameters, and isolate issues in telecom service flows. I am comfortable reading signaling traces, stack traces, and technical logs.

I work with SQL databases including Sybase, ENIQ, MySQL, and Oracle for KPI queries, data validation, and incident investigations. I also use Linux CLI tools, Splunk, Nagios, and Jira to support diagnostics, monitoring, and operational tracking.

I currently operate independently as a technical services engineer, managing field diagnostics, electrical installations, client communication, and technical reporting without direct supervision or escalation paths.

I am a native Spanish speaker with Upper-Intermediate English proficiency and can collaborate remotely with international technical teams. I am also expanding my cloud knowledge through Google Cloud Associate Cloud Engineer training.

Notice period: Immediately

Skills

12 capabilities

Tech stack & tools

Working toolkit

Collaboration

Development

Monitoring

Experience

Career history

Independent Technical Services Engineer Ampr3 SpA

I operate as the sole technical services engineer, independently managing technical work without supervision, formal documentation, or an escalation path.

My responsibilities include low-voltage electrical installations for residential and commercial clients under SEC Class A regulations, fault diagnosis, electrical measurements, technical reporting, and direct client coordination.

Telecommunications Support Engineer Allware SpA (outsourced to Entel)

I provided external engineering support for Entel core telecommunications platforms. I performed SIM card profile homologation, including subscriber-profile validation and testing.

I also prepared technical guidelines for Atos/Unify IP telephony platform updates and coordinated with vendors and internal engineering teams.

Voice Services Engineer Entel

I provided engineering analysis and lifecycle support for more than 32 million SIM cards across 2G, 3G, and 4G networks. I used SoapUI to interact with the Ericsson HSS Provisioning Gateway for VoLTE parameter enablement, subscriber profile management, response validation, and provisioning issue diagnosis.

I analyzed SIP traces for VoLTE troubleshooting, participated in Cisco BroadWorks mobile-to-hosted-PBX integration, and supported a Unify Hosted PABX migration to a virtualized environment. I also supported migration of 120 international long-distance carriers and 30 corporate clients with approximately 6,000 IP telephony extensions.

My operational work included Linux CLI and awk log analysis, Splunk diagnostics, Sybase and ENIQ SQL queries, Jira incident tracking, and Nagios alarm monitoring.

Access Network Design Engineer Entel

I supported 2G spectrum clearance of 40 MHz to enable 3G deployment in the Metropolitan Region.

I performed RF planning and simulation using Planet EV, supported site integration and performance validation, and contributed to quality management for new network sites under ISO 9001 standards.

Quality Analysis and Studies Engineer Entel

I analyzed GSM network KPIs at MSC, BSC, and cell levels to support network performance improvement and reduce call drop rates below 1%.

I produced technical reports and performance monitoring outputs to support network optimization decisions.

Field Engineer Osam Ltda.

I performed technical inspection during the reception of BellSouth's fiber optic ring.

I also commissioned and delivered 25 Ericsson Minilink microwave links to Entel.

Education

Learning history

Universidad de Santiago de Chile (USACH)

Electrical Engineering, Electronics and Telecommunications

Studied Electrical Engineering with specialization in Electronics and Telecommunications.

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