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Rommel Castro

@rommelcastro

Infrastructure Voice Engineer at United Overseas Bank Limited, supporting Cisco and Avaya voice systems and enterprise UC operations.

Singapore
Message

At United Overseas Bank Limited, I provide Level 1 and Level 2 operations support for voice infrastructure through PERSOLKELLY Singapore Pte Ltd. I support Cisco and Avaya Unified Communications systems, manage post-implementation fault tickets, and make infrastructure changes in line with Change Management processes.

Previously, I supported enterprise voice environments at Quess Singapore Pte Ltd, NTT Singapore Solutions Pte Ltd, and 3D Networks Singapore Pte Ltd. My work has included system installation and troubleshooting, customer support, and knowledge-sharing training; earlier, I worked on telephony systems in the UAE with Mideast Data Systems (PACC).

Experience

Work history, roles, and key accomplishments

PL
Current

Infrastructure Voice Engineer

PERSOLKELLY Singapore Pte Ltd

Dec 2024 - Present (1 year 10 months)

Provide on-site installation, diagnosis, troubleshooting, and repair of Cisco and Avaya Unified Communications systems. Manage post-implementation support issues and ensure compliance with client standards.

Cisco Unified Communications Manager (CUCM)Cisco Unity ConnectionUnified Contact Center Express (UCCX)CubeExpresswayCisco JabberAvaya IP TelephonyNICE Call RecordingChange ManagementSLA ManagementCustomer SupportTraining
QL

Infrastructure Voice Engineer

Quess Singapore Pte Ltd

Aug 2019 - Nov 2024 (5 years 3 months)

Provided Level 1 and Level 2 operations support for voice infrastructure, managing Cisco and Avaya environments. Performed changes in line with Change Management processes and ensured compliance with client standards.

Cisco Unified Communications Manager (CUCM)Cisco Unity ConnectionUnified Contact Center Express (UCCX)NICE Call RecordingCisco JabberCubeExpresswayChange ManagementSLA ManagementCustomer SupportTraining
MP

Telecom Engineer / Field Telecom Engineer

Mideast Data Systems (PACC)

Aug 2008 - Jun 2014 (5 years 10 months)

Provided on-site installation, commissioning, troubleshooting, and repair of enterprise telephony systems. Instructed customers on system operation and maintenance, and coordinated resolution of complex issues.

CS1000BCMNortel NorstarIP OfficeSIPT1 PRIISDNCustomer TrainingProject Delivery
DP

System Engineer

3D Networks Philippines

Jan 2006 - Dec 2008 (2 years 11 months)

Provided system engineering support for unified communications solutions.

GI

Technical Sales Engineer

Globaltech Automation Inc.

Jan 2005 - Dec 2006 (1 year 11 months)

Provided technical sales support for automation products and solutions.

AT

Telecom Engineer

Al-Taknia for Telecom

Jan 2003 - Dec 2005 (2 years 11 months)

Provided telecom engineering support for enterprise telephony systems.

TI

Technical Support Engineer

Trends & Technologies Inc.

Jan 2000 - Dec 2003 (3 years 11 months)

Provided technical support for customers and systems.

SE

Technical Staff/Trainee

Spectrum Electronics

Jan 1999 - Dec 2000 (1 year 11 months)

Provided technical support and training in electronics systems.

Education

Degrees, certifications, and relevant coursework

Mapúa Institute of Technology logoMT

Mapúa Institute of Technology

Bachelor of Science, Electronics and Communications Engineering

Bachelor of Science in Electronics and Communications Engineering from Mapúa Institute of Technology.

PE

PEOPLECERT

ITIL4 Foundation, IT Service Management

ITIL4 Foundation certification.

Avaya logoAV

Avaya

Avaya AIPS, IP Office

Avaya AIPS – IP Office certification.

Avaya logoAV

Avaya

Avaya ACIS, Aura CM & Messaging

Avaya ACIS – Aura CM & Messaging certification.

Avaya logoAV

Avaya

Avaya ACSS, CS1000 for Avaya Aura

Avaya ACSS – CS1000 for Avaya Aura certification.

Avaya logoAV

Avaya

Avaya ACIS, CallPilot

Avaya ACIS – CallPilot certification.

Avaya logoAV

Avaya

Avaya APDS, Unified Communications

Avaya APDS – Unified Communications certification.

PE

PEOPLECERT

ITIL4 Foundation, IT Service Management

ITIL4 Foundation in IT Service Management training.

AXELOS logoAX

AXELOS

Prince2 Agile Foundation, Project Management

Prince2 Agile Foundation training.

CI

Cambridge Educational Institute

Project Management Professional (PMPR), Project Management

Project Management Professional (PMPR) by PMI training.

Avaya logoAV

Avaya

Progression Release 1.0, Progression

Progression Release 1.0 training.

Avaya logoAV

Avaya

Hospitality Messaging Server 400, Hospitality Messaging

Hospitality Messaging Server 400 training.

Avaya logoAV

Avaya

VOIP Technology, VOIP Technology

VOIP Technology training.

NICE logoNI

NICE

Audiolog Call Recording Server, Call Recording

Audiolog Call Recording Server training.

Avaya logoAV

Avaya

Call Pilot Mini 1.5, Call Pilot

Call Pilot Mini 1.5 training.

Tech stack

Software and tools used professionally

Cisco Unity Connection logo

Cisco Unity Connection

Availability

Looking for a job

Location

Singapore

Authorized to work in

Singapore

Salary expectations

90k+ SGD

Job categories

Infrastructure Voice Engineer

Skills

Unified CommunicationsVoice InfrastructureCisco Unified Communications Manager (CUCM)Cisco Unity ConnectionUnified Contact Center Express (UCCX)Cisco CUBE SIP RoutersCisco ExpresswaysAvaya IP TelephonyNICE Call RecordingCisco JabberCMECisco TelepresenceCS1000IP OfficeSIP

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