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I'm Marian Ungureanu, a telecommunications engineer with over 10 years of RAN experience, specializing in troubleshooting and root cause analysis across SRAN/4G/5G networks. I enjoy turning complex network issues into actionable fixes and I’m driven by a passion for reliable, KPI-driven performance optimization. In my current role, I lead feature testing and ownership, mentor colleagues through knowledge-transfer sessions, and collaborate with vendors to ensure SLA compliance and operational excellence. I value clear communication, thorough regression testing, and reproducible lab fault reproduction to sustain robust network performance.…I'm Marian Ungureanu, a telecommunications engineer with over 10 years of RAN experience, specializing in troubleshooting and root cause analysis across SRAN/4G/5G networks. I enjoy turning complex network issues into actionable fixes and I’m driven by a passion for reliable, KPI-driven performance optimization. In my current role, I lead feature testing and ownership, mentor colleagues through knowledge-transfer sessions, and collaborate with vendors to ensure SLA compliance and operational excellence. I value clear communication, thorough regression testing, and reproducible lab fault reproduction to sustain robust network performance.

Marian Ungureanu

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I'm Marian Ungureanu, a telecommunications engineer with over 10 years of RAN experience, specializing in troubleshooting and root cause analysis across SRAN/4G/5G networks. I enjoy turning complex network issues into actionable fixes and I’m driven by a passion for reliable, KPI-driven performance optimization. In my current role, I lead feature testing and ownership, mentor colleagues through knowledge-transfer sessions, and collaborate with vendors to ensure SLA compliance and operational excellence. I value clear communication, thorough regression testing, and reproducible lab fault reproduction to sustain robust network performance.…I'm Marian Ungureanu, a telecommunications engineer with over 10 years of RAN experience, specializing in troubleshooting and root cause analysis across SRAN/4G/5G networks. I enjoy turning complex network issues into actionable fixes and I’m driven by a passion for reliable, KPI-driven performance optimization. In my current role, I lead feature testing and ownership, mentor colleagues through knowledge-transfer sessions, and collaborate with vendors to ensure SLA compliance and operational excellence. I value clear communication, thorough regression testing, and reproducible lab fault reproduction to sustain robust network performance.

Available to hire

I’m Marian Ungureanu, a telecommunications engineer with over 10 years of RAN experience, specializing in troubleshooting and root cause analysis across SRAN/4G/5G networks. I enjoy turning complex network issues into actionable fixes and I’m driven by a passion for reliable, KPI-driven performance optimization.

In my current role, I lead feature testing and ownership, mentor colleagues through knowledge-transfer sessions, and collaborate with vendors to ensure SLA compliance and operational excellence. I value clear communication, thorough regression testing, and reproducible lab fault reproduction to sustain robust network performance.

Skills

Experience Level

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

French

Advanced

Work Experience

RAN Test Engineer at Nokia Networks

September 1, 2015 - Present

Acted as Feature Test Lead / Feature Owner, managing new feature implementation, test case specification, execution, and regression testing. Logged defects, track status, and technical report details to program management. Tier-3 RAN Support and RCA for 4G/5G networks, troubleshooting escalated incidents and implementing permanent fixes for NPI projects. Conducted KPI analysis and performance optimizations, reproduced faults in lab environments. Mentored engineers through knowledge transfer sessions and standardized troubleshooting methodologies.

LTE System Test Engineer at Nokia Networks

July 1, 2012 - September 1, 2015

Executed system tests for LTE Macro & Metro Cells, validating new features and improving network stability. Used diagnostic tools to analyze signaling, debug faults, and raise defects with detailed reporting.

Telecommunication Engineer at Deltatel Romania

January 1, 2008 - January 1, 2012

Site survey, installation, and troubleshooting coordination.

Test Support Engineer at Flextronics Romania

January 1, 2006 - January 1, 2008

Test equipment maintenance and operator training.

Test Technician at Solectron Romania

January 1, 2003 - January 1, 2006

Equipment breakdown resolution and preventive maintenance.