Senior RAN Engineer – Telefonica Spain - Tech Mahindra - Remote
(2025-04)
- Lead validation, O&M and support of LTE/5G RAN in multi-vendor environments (Nokia & Ericsson).
- Installation, commissioning and support for 5G SA, 5G NSA, and NB-IoT nodes, ENM & NetaC OSS. Second line of troubleshooting for any issues related to the assigned functionality, lead and support to Tier 1 Engineers.
- Integration, commissioning, and troubleshooting of BTS equipment (2G/3G/4G/5G) Support Field Technicians
- HW migration and troubleshooting.
- Writing scripts and integrating new RAN systems for commercial expansions.
- Supporting with 2CC, 3CC, 4CC, 5CC Carrier Aggregation & testing on the Setup
- Supporting with inter-intra frequency Handover & relations for 4G/5G,VoNR, ENDC, EPS Fallback, CMAS Configuration.
NPI Engineer V- RAN Lab Support Engineer - AT&T & T-mobile
(2021-08-08 - 2024-12-04)
- Preforming LTE/5G RAN regression test cases for new Ericsson software version.
- Support the LTE network in a Lab environment with a role to validate new features prior to field deployment.
- Knowledge of network protocols for L1/L2/L3, 4G Call Processing, call procedures, VoLTE and 3GPP Standard.
- Analyze requirements and specifications to design and document test cases, execute and record test cases results document and track defects, analyze testing results and produce feature test reports.
- Daily feature test report to the lead phase.
- Open a new CSR according to pertinent guidelines defined by the project and follow up until resolution.
- First line of troubleshooting for any issues related to the assigned functionality and should be able to isolate the problem and distinguish between functionalities and configuration's issues.
- Performing all configuration settings related to the assigned feature at the laboratory.
- Support/contacts when configuration is related to third party nodes or vendors.
- Analyze system logs, test tool logs and use this information for debugging issues and identifying accurate root causes for the problems seen on the system under test or in the network.
- Experience with protocol analyzers, test tools such as XCAL, QXDM, Wireshark, UE emulator TM500 Aeroflex, Spectrum Analyzers.
- Bringing production faults to the lab, trying to reproduce faults, opening CSRs if needed, collecting traces required by PDU or CNS, following up on problems resolution and validating the fix.
- Troubleshooting inter-vendors operability issues.
- Supporting T-Mobile projects testing from RAN perspective for different network elements (transport NW, IMS and EPC core).
- Supporting Ericsson SW validation projects (new SW validation and features testing).
- Keeping the lab RAN NW updated with the latest TMO baseline and GA software.
- Regular health checking of lab nodes to maintain a healthy and ready to test RAN setups.
- Setting up test environment for T-Mobile projects by performing SW upgrade, reconfiguration, feature support, HW migration and troubleshooting.
- Writing scripts and integrating new RAN systems for lab expansions.
- Regression testing for new maintenance releases.
- Supporting and integrating toy cell sites hosted by production ENM and served by production core.
- Supporting with 2CC, 3CC, 4CC, 5CC Carrier Aggregation & testing on the Setup
- Supporting with inter-intra frequency Handover & relations for 4G/5G,VoNR, ENDC, EPS Fallback, CMAS Configuration.
- Audit & Node Alignment for Bellevue & Reston LAB Nodes
RAN Integration Engineer for California Market - T-Mobile
(2019-05-16 - 2021-07-30)
- Installation, configuration, and testing equipment's Nokia 7705SAR, 7210SAS, 7250 Nokia routers & switch for TMO project and Nokia Flexi new Integration for RAN eNodeb/Gnodeb equipment.
- Perform Ericsson T-Mobile L600/L700, NR60, MMBB and T-Mobile L1900 commissioning and remote integration and troubleshoot during integration process, License LKF, Base Line, Define RETs, 4415, AIR32, 4449 Radio Swap, Antenna Cutover, Pre/ Post Checks, Health Checks, RTT Final, VSWR, RSSI issues and troubleshoot.
- UMTS/LTE-RAN: Integration of simple to complex configuration, RBS 6000 and BBU5216/6630/6648
- Experience in developing & troubleshooting integration scripts for 1C/2C/3C multi carrier add CBU, DUW, DUL, /DUS and BBU5216/6630 migrations.
- Integration, commissioning, and troubleshooting of BTS equipment (2G/3G/4G/5G) Support Field Technicians
- Create and modify scripts from standard and non-standard design configurations (RFDS)
- Build/Troubleshoot VSWR, RETs and TMAs, cabinet hardware hub configurations.
- CSR script generation and implementation
- Daily Network KPI and Backhaul performance monitoring and troubleshooting, including opening tickets with Telco vendors.
- New Installation & Integration for CSR 7705 service aggregation routers an and IXR cutover and new expansion ,cutover and alarm clearing.
LTE RAN Test Engineer (Nokia & Ericsson Equipment) - Sprint - Reston VA
(2018-08-16 - 2019-05-02)
- Responsible for development of product validation, feature validation, systems and performance analysis, customer review sessions for LTE RAN products focusing on Air interface, E2E performance, and Call Processing and call procedures.
- Analyzing the product and feature requirements, converting them into system test cases and execution to ensure product meets customer spec.
- Feature performance analysis, evaluation of new product & SW releases on Nokia and Samsung RAN equipment.
- Perform detailed analysis of 4G Wireless Protocols for LTE and VoLTE.
- Responsible for analyzing and troubleshooting the issues.
- Experience with test tools including protocol analyzers, XCAL/QXDM, Wireshark, Channel Emulator, Spectrum Analyzers Signal and collect and analyze PCAP, GNB traces.
RAN Integration Engineer - Nokia Solutions and Networks Mexico - Mexico
(2017-08-16 - 2018-08-15)
- S-RAN, D-RAN and C-RAN New Integration and Support for new shared network of 700 MHz in Mexico (Volte) LTE advanced.
- Integration, Commissioning and Troubleshooting for Flexi Nokia eNodeB, Nokia Flexi, Airscale and CORE Virtual Solution for Altan Mx
- Installation, configuration, and testing equipment's Nokia 7705SAR, 7210SAS, 7250 to aggregation for access and core layers, configuring, software upgrade, cutover, maintaining and troubleshooting.
- Perform Software Upgrades, Call Processing Plan Test & OAM Testing and Troubleshooting
- Change requested, change parameters, improve RSSI/VSWR, define external alarms, RET / TMA Scripting.
- Technical support during the integration phase and live sites (commercial equipment)
- Knowledge of Node's, ALU 7750/7210 router and knowledge for using Netac, SAM, BTS Site manager, MW9500 Nokia, TLU/PMU 1830 TX.
RAN Integration Engineer for NORCAL AT&T in SAN RAMON CA, USA - YUPANA INC. - CA, USA
(2016-07-27 - 2017-06-01)
- Integration of RBS 3000, 6000 series WCDMA and LTE, VoLTE supporting multi DU configuration, XMU integration and expansion
- Restoration & Troubleshooting alarms for LTE, AWS, PCS & GSM, Node-B/ENodeB TX/HW using RBS Element
- Node –B Sync Troubleshooting, Loop Check for TX/IP from Node B to RNC
- Perform RET configuration, script verification for Argus, Kathrein, Andrew and Hexport Antenna
- Perform RET configuration via CCU (Interim build solution)
- NEA Testing support with external alarm definition
- Conduct VSWR, PIM test, Return Loss and Short test for elliptical waveguide, coaxial cable.
- Perform TMA/RET scripting knowledge, configuration, and troubleshooting.
- Integration War-Room for RETs, PIM, VSWR, RSSI issues.
- Script Creation and Loading of Node B (O&M, Site equipment, Specific Iub, Load LKF and External Alarm System) via EMAS and Moshell
- Carrier addition 3C,4C,5C script creation and loading for carrier addition.
- License key and software upgrade onsite execution for WCMDA and LTE Nodes
- Hands on working knowledge how to do eNodeB/NodeB Rehoming/Reparenting on field
- Perform DUL, DUW Board Replacement and health check
- Perform RRUS (RRUS 11, RRUS A2) Replacement and addition, RRU Swap, 2nd CPRI configuration and Troubleshooting, Antenna replacement.
- Perform onsite troubleshooting for configuration for hardware issues occurred on LTE and WCDMA Nodes
- PCS MIMO 4*4 Configuration
RF Optimization Engineer (Remote) - Nextel de México
(2014-04-07 - 2016-05-03)
RAN Performance KPIs analysis and troubleshooting: Obtaining data from OSS M2000, identify the affected counters and proposing solutions to improve the network performance.
Locate Top
Offender cells that affect KPIs (Accessibility, Retainability, Integrity, Availability, and Mobility), analyze these cells and propose troubleshooting suggestions, and examine the effect after adjustment. In addition, performance reports delivery to AT&T 40 markets project. Physical & Logical optimization: Azimuth, Electrical & Mechanical Tilt, Scrambling codes, Inte
