Open to opportunities

Sumesh Cool

@sumeshcool

Message

Senior RAN SME specializing in 5G ORAN/vRAN troubleshooting and deployments.

India

Message

What I'm looking for

I seek senior RAN roles focused on 5G ORAN/vRAN troubleshooting, large-scale migrations, and cross-functional collaboration with vendors and cloud teams.

I am a Senior RAN Subject Matter Expert with 11 years of hands-on experience in 4G/5G networks, specializing in ORAN/vRAN architectures and L1/L2/L3 troubleshooting across RU, DU, and CU domains. I have led large-scale migrations, software upgrades, and CR execution for major operators.

My work includes multi-cloud and edge deployments using VMware, Wind River CaaS, Kubernetes (EKS) and CI/CD on AWS, plus orchestration and instantiation via vCenter and TCA; I developed automation scripts for fault detection and conducted deep packet and call-flow analysis for LTE, VoLTE and 5G VoNR.

I collaborate across RF, Core, Cloud and Market teams and engage vendors (Mavenir, Samsung) for defect resolution and validation, driving site delivery, acceptance testing and sustained network availability for large clients including Dish Wireless (U.S.), Rakuten Mobile (Japan), T-Mobile and AT&T.

Experience

Work history, roles, and key accomplishments

Current

Senior Engineer (RAN SME)

Current

DISH Network Technologies India Private Limited

Dec 2023 - Present (1 year 10 months)

Executed CRs and pre/post validations for 20k+ 5G sites, led migrations of 22k+ RAN nodes to Wind River cloud, and authored MoPs while troubleshooting CU/DU/RU degradations to restore KPIs.

5G ORAN VRAN RU DU CU Troubleshooting ECPRI VMWare Wind River Cloud CI CD

RAN System Engineer

DISH Network Technologies India Private Limited

Feb 2023 - Dec 2023 (10 months)

Provided L1/L2 troubleshooting for RU/DU/CU in Dish 5G, managed VM instantiation issues with TCA/Vcenter, and analyzed packet traces to resolve data/voice/registration incidents.

RAN Troubleshooting F1 C F1 U Mavenir MCMS Samsung USM VMware TCA Wireshark AWS

Fault Management Engineer

Rakuten Symphony India Private Limited

Feb 2022 - Feb 2023 (1 year)

Performed L1/L2 analysis and vRAN troubleshooting for Rakuten Mobile, managed VM migrations in OpenStack/CVIM, and debugged backhaul and timing issues to improve site availability.

VRAN OpenStack TOR AG Router Debugging GPS PTP Timing Linux Altiostar EMS Siteforge

Specialist (5G Network Deployment)

CSS Corp Pvt Ltd

Jun 2019 - Feb 2022 (2 years 8 months)

Delivered remote 5G implementation support for T-Mobile and AT&T, managed site scoping and SLA milestone realization in Siteforge, and resolved L1/L2 site delivery issues to meet quality standards.

5G Implementation Siteforge CQT 2.0 Project Coordination

NI Project Coordinator

RS Spectra Technical Solution Pvt Ltd

Apr 2018 - Jun 2019 (1 year 2 months)

Coordinated BTS installations, antenna swaps and commissioning for Bharti Airtel, Idea and BSNL, performed alarm handling and fault rectification across OMC/BSC/BTS systems.

BTS Commissioning Nokia Siemens BTS Alarm Handling Integration Fault Rectification Acceptance Testing

Project Coordinator

Clear Secured Services Private Limited

Feb 2017 - Nov 2017 (9 months)

Managed field teams for BTS installations and integrations for Bharti Airtel and Idea, conducted acceptance tests and resolved equipment alarms to ensure project acceptance.

BTS Commissioning Acceptance Testing Field Supervision Integration

Project Coordinator

Zawl buk Infrastructure LLP

Aug 2015 - Jan 2017 (1 year 5 months)

Planned and supervised telecom infra installations including 48V DC cabinets and DGs for Indus Towers, executed 100+ acceptance tests and managed site surveys and upgrades.

Telecom Acceptance Testing Project supervision Indus Towers

Site Engineer

Telcon Infrastructures

Jul 2014 - Jul 2015 (1 year)

Coordinated new site builds and upgrades for Indus Towers, oversaw tower erection and conducted 100+ field acceptance tests to ensure timely project delivery.

Acceptance Testing Project Planning Field Supervision