AVAILABLE FOR SENIOR LTE / 5G NR / O-RAN ROLES · HYDERABAD / BANGALORE / REMOTE

Pardha Saradhi
Chandana.

Senior LTE/5G NR Test Engineer — RF Validation, RCT, O-RAN RU features, and cross-domain system integration across feature, performance, and stability. Currently at Parallel Wireless for Ooredoo, V Mobile, and PNG Mobile; formerly across Mavenir programs for DTAG, VMO2, and NEC.

01 · Bangalore, IN 02 · Est. 2022 03 · 4+ Years
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- About

Engineering the invisible infrastructure.

Four years validating the radio access networks that carry billions of conversations and connections - every day, in every weather, across every band.

I spend my days in the messy, beautiful intersection of protocol stacks, real hardware, and customer expectations. RAN testing isn't about pass/fail - it's about understanding why a UE re-attaches at the cell edge at 3am, or why throughput dips during a specific handover sequence.

Currently at Parallel Wireless in the Radio R&D group, I validate O-RAN Radio Unit (RU) features and RF Conformance (RCT) — M/C/U/S-plane, alarm handling, RU recovery flows, eTilt, IQ playback, ACLR/EVM/SEM/Rx sensitivity — plus cross-domain debug spanning O-RU, BBU, LTE protocol stack, NETCONF, and PTP synchronization. Deployments for Ooredoo, V Mobile, and PNG Mobile networks, backed by Robot Framework + Python automation for multi-UE throughput, endurance, and RSRP-controlled long-run tests.

Before that, four years at Mavenir Systems validating LTE and 5G SA / NSA for Deutsche Telekom (DTAG), Virgin Media O2 (VMO2), NEC, Ooredoo, V Mobile, and PNG networks — Carrier Aggregation up to 1.4 Gbps DL, O-RAN CU/DU/RU integration, and root-cause analysis across the full protocol stack.

- Stable. Scalable. Signal-true.
0+ years
RAN testing & automation
0
Tier-1 telco clients
1.4Gbps
Peak DL · 4CA validated
0+ RU
Reboot endurance runs · RCT validated
- The stack

Where I operate.

Coverage across the RAN — UE air interface through the O-RAN split (RU, DU, CU) to the packet core. Primary focus on the Radio Unit: RF conformance, RCT, M/C/U/S-plane, and cross-domain system integration.

UE
User Equipment
Commercial UEsTM500AmarisoftTelit / COMPAL
Air
Interface
→
LTE · 5G NR
RU PRIMARY
Radio Unit · O-RAN
RF Conformance (RCT)ACLR · EVM · SEMM/C/U/S-plane 4 & 5-Band AAUIQ PlaybackeTilt · Alarms PA ProtectionRx Sensitivity · Blocking
Fronthaul
→
eCPRI · NETCONF · PTP
DU
Distributed Unit · L1/L2
PHY (L1)MAC · RLCScheduler Intra/Inter-DU HOBBU debug
Midhaul
→
F1 · F1AP
CU
Central Unit · L3
RRC · PDCPCP / UP split Handover ControlNAS awareness
Backhaul
→
S1 · X2 · NG
EPC / 5GC
Core · Adjacent
Attach / SessionAwareness only
Test coverage across the stack
01
Feature Validation
Attach · VoLTE · Carrier Aggregation · X2/S1 · Intra/Inter-DU Handover
02
RF Conformance (RCT)
ACLR · EVM · SEM · Rx Sensitivity · Blocking · PA Protection · IQ Playback
03
Performance & KPI
Throughput · Latency · Mobility · 1.4 Gbps DL / 250 Mbps UL peak
04
System Integration
Cross-domain debug · O-RU · BBU · NETCONF · PTP synchronization
05
Stability & Endurance
8-72h long runs · 100+ RU reboot cycles · Mixed traffic loads
06
Automation
Robot Framework · Python · PyTest · Appium/ADB · CI / Nightly
- Work

Selected engagements.

A chronological view across radio R&D, feature commercialization, and ORAN system validation for tier-1 European and Asian operators.

01 / 04

Parallel Wireless - Senior Engineer, QA — Radio R&D

Bangalore, India O-RAN RU Validation · RCT · Ooredoo · V Mobile · PNG Mobile
  • Debugged cross-domain system failures across O-RAN Radio Unit (O-RU), Baseband Unit (BBU), LTE protocol stack (RRC/PDCP/RLC/MAC/PHY), RF subsystems, NETCONF management, and PTP synchronization — correlating radio, baseband, management, and automation logs across 100+ RU reboot stability runs to isolate root causes.
  • Validated RF Conformance (RCT) of O-RAN Radio Units using IQ playback and Tx/Rx verification: ACLR, EVM, Output Power, SEM, Receiver Sensitivity, Blocking, Intermodulation, PA Protection — per 3GPP specifications.
  • Investigated and reported critical defects: RU reboot failures, carrier activation, RF configuration, bandwidth reconfiguration, NETCONF supervision, synchronization recovery, and RF hardware faults — collaborated with dev teams to validate fixes.
  • Automated dual-band LTE B4/B7 bring-up, multi-UE TCP/UDP throughput, attach/detach endurance, and RSRP-controlled RF baseline with Robot Framework and Python — reduced manual effort and improved regression efficiency across 4 & 5-Band AAU.
  • Resolved two high-impact O-RAN software defects involving bandwidth reconfiguration and post-reboot carrier initialization — significantly improved RU recovery reliability and CI validation efficiency.
  • Supporting operator-facing integrations and deployment readiness for BSNL, V Mobile, and PNG Mobile networks.
Nov 2025
- Present
02 / 04

Mavenir Systems - Member of Technical Staff I

Bangalore, India LTE/5G RAN Validation · DTAG · VMO2
  • Validated LTE and 5G RAN features across operator deployments including DTAG and VMO2 programs.
  • Specialised in end-to-end feature validation — VoLTE, Carrier Aggregation (4DL/2UL), X2/S1 mobility, and NSA/SA coexistence scenarios.
  • Executed large-scale mobility, throughput, and mixed-traffic stability testing across real UE environments.
  • Achieved sustained throughput validation up to 1.4 Gbps DL / 250 Mbps UL under carrier aggregation.
  • Performed deep protocol and system-level debugging using QXDM, Wireshark, XCAL, and PCAT for attach, mobility, and throughput regressions.
  • Recreated customer-reported field issues and validated fixes under real-world traffic and mobility conditions.
  • Contributed to automation-driven regression frameworks and long-duration endurance validation workflows.
Feb 2023
- Oct 2025
03 / 04

Mavenir Systems - Graduate Engineer

Bangalore, India 5G SA / O-RAN Validation · NEC · DTAG
  • Performed end-to-end 5G SA validation across O-RAN architecture components — CU / DU / RU with CP/UP separation.
  • Validated Inter/Intra-DU mobility, attach procedures, throughput, and stability across real UE-based environments.
  • Deep protocol stack analysis across RRC, PDCP, RLC, MAC, and PHY layers — debugged L1/L2 mobility and attach anomalies.
  • Improved overall system stability through long-duration stress, endurance, and mixed-traffic validation campaigns.
  • Investigated field-reported interoperability and mobility issues; delivered detailed 3GPP-aligned root-cause reports.
  • Supported feature commercialization and release readiness across customer-facing deployments.
Feb 2022
- Jan 2023
04 / 04

CMR Institute of Technology - Education

Hyderabad, India B.Tech · Electronics & Communication · GPA 3.55 / 4.0
  • Bachelor of Technology in Electronics & Communication Engineering with focus on signal processing, communications, and embedded systems.
  • Foundation in antenna theory, digital communications, microprocessor design, and DSP - the substrate for everything that came after.
Aug 2017
- May 2021
- Capabilities

Toolkit, refined.

A telecom and automation stack built across 4+ years of LTE / 5G NR validation, ORAN integration, and real-UE field debugging.

01

Wireless & O-RAN

LTE TDD / FDD 5G SA TDD / FDD SA-NSA Coexist VoLTE Carrier Aggregation 4CA DL / 2CA UL X2 / S1 Handover O-RAN CU / DU / RU RU Features · M/C/U/S-plane RCT · eTilt · IQ Playback NETCONF · PTP Sync Multi-vendor Integration
02

RF Conformance (RCT)

ACLREVMSEM Rx SensitivityBlockingIntermodulation Output PowerPA Protection IQ PlaybackDynamic Range RSSI AccuracyPS Shutdown
03

Testing & Validation

Sanity / RegressionPatch TestingThroughput & KPIStress / Long-run Intra / Inter DU HOCMAS / ETWSEndurance 8-72hNegative Testing
04

Log Analysis & Debug

QXDMQCATPCATXCAL Qualcomm Tools WiresharkTCP DumpL1/L2 Root Cause
05

Automation & Scripting

PythonRobot FrameworkPyTest Appium / ADBMulti-UE Orchestration RSRP MonitoringAuto-attenuation CI / Nightly ValidationShell Scripting
06

Test Equipment & UEs

TM500Amarisoft Keysight EXMDingli OnePlusSamsung TelitCOMPAL
- Focus areas

Where I add leverage.

A few specific places I tend to move the needle - from automation that runs while the lab sleeps, to debug that catches the issue customers haven't reported yet.

01.
Current focus · O-RAN RU

Automation & O-RAN RU validation

Carrier-grade RU feature validation: M/C/U/S-plane, alarms, RU recovery flows, and eTilt operations across LTE and 5G deployments. Backed by scalable Robot Framework + Python automation for multi-UE throughput, KPI validation, and RSRP-controlled endurance testing.

O-RANRUM/C/U/SPythonRobot
02.
RF Validation · RCT

Carrier-grade RF Conformance

Full Tx/Rx RF conformance validation for O-RAN Radio Units — ACLR, EVM, SEM, Receiver Sensitivity, Blocking, Intermodulation, PA Protection, and IQ Playback per 3GPP specifications. Executed across 4 & 5-Band AAU configurations with Keysight EXM and Amarisoft test equipment.

RCTACLREVMSEMIQ Playback3GPP
03.
5G NR Validation

5G SA / O-RAN end-to-end

End-to-end 5G SA across O-RAN architecture (CP/UP/DU/RU): Inter/Intra DU HO, attach, throughput, mobility, cell reselection — 3GPP compliant.

5G SAO-RANNECDTAG
04.
LTE Feature

Feature testing & coexistence

Validated Attach, VoLTE, Carrier Aggregation (4DL/2UL → 1.4 Gbps DL), X2/S1 + Intra/Inter DU mobility across mixed traffic and SA-NSA coexistence.

LTEVoLTECAVMO2
05.
Protocol Debug

L1/L2 root-cause analysis

Deep-dive debug with QXDM, Wireshark, XCAL, PCAT — handover failures, attach anomalies, and throughput degradations resolved across the protocol stack.

RRCPDCPRLCMACPHY
- Recognition

Awards & credentials.

Recognition from peers and operators, alongside the foundational learning that supports the work.

Spotlight Award

Customer Focus

Mavenir Systems · 2024

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Award · 2024

Customer Focus - Spotlight

Recognised at Mavenir Systems for exceptional commitment during LTE feature commercialization for DTAG and VMO2. Awarded for on-time delivery of Attach, VoLTE, and Carrier Aggregation validation across mixed-traffic and SA-NSA coexistence scenarios.

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Certificate

Python for Everybody

Udemy · 2021

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Course · 2021

Python for Everybody

Foundation in Python - data structures, file I/O, network APIs, database integration. The substrate for the automation work that followed at Mavenir and Parallel Wireless: Robot Framework keywords, multi-UE orchestration, RSRP monitoring scripts.

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Degree

B.Tech, Electronics & Communication

CMR Institute of Technology · 2021

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Education · 2017-2021

B.Tech ECE · GPA 3.55 / 4.0

Bachelor of Technology in Electronics & Communication Engineering at CMR Institute of Technology, Hyderabad. Focus on signal processing, digital communications, antenna theory, microprocessors, and DSP - the substrate for everything that came after in RAN.

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3GPP

Compliance & standards aware

Hands-on across Releases

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Standards · ongoing

3GPP Compliance

Hands-on across LTE (TS 36.xxx) and 5G NR (TS 38.xxx) protocol releases. Verified compliance during feature commercialization, ORAN CU/DU/RU integration, and stack-level debug for tier-1 operators across Releases 15 and 16.

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- Get in touch

Let's build something signal-true.

Open to Senior LTE/5G NR, RF Validation, and O-RAN RU roles · contract validation work · ORAN consulting. Reach out — I read every message.

Send a message

pardhasaradhi7477@gmail.com ↗
Hyderabad / Bangalore, India +91 82470 87692