CHRISTOPHER NIÑO REVUELTA
Summary
A Cisco Certified Network Professional (CCNP) with almost fifteen-year experience as Level 2/3 technical support and is responsible for maintaining, configuring, troubleshooting, and testing of IP and data network devices. Experience in vendor engagement for troubleshooting hardware, software, and circuits. With eight years of experience in LAN/WAN technologies, computer networking, data communication network operations and maintenance. Exposure on both telco and banking environment with vast knowledge in legacy TDM, SDH/PDH, DSL, WLAN, MAN, and WAN technologies such as (Leased line, Frame Relay, ATM, ISDN, MPLS, IP/VPN). Knowledge on new emerging technologies like SD-WAN and VMware.
Overview
24
24
years of professional experience
1
1
Certification
Work History
Infrastructure Senior Tech Analyst
Citibank Singapore
09.2019 - Current
- Providing Technical Support for the firm’s global network with focus on both network infrastructure projects and infrastructure break fixes.
- Represent Network Services Support (NSS) professionally on conference calls with cross functional partners throughout the technology organization while conducting in-depth technical investigations of ongoing incidents involving network connectivity and performance issues.
- Ensuring infrastructure changes, authorization requests, communications to stakeholders for post change testing, arrangement of hardware replacements are completed complying with established process and execute due diligence in planning to prevent causing disruption of services, in compliance with defined IT processes and procedures.
- Displays competency and professionalism on conference calls for major incidents which may or may not be due to failure in NSS-managed technology infrastructure. Able to drive major incident calls as lead network representative with assertiveness, logical troubleshooting along with clear and concise communication towards both external and internal stakeholders.
- Performs post mortem Root Cause Analysis for complex, high visibility issues or major incidents within tight timeline and the ability to drive vendors assertively to produce justifiable root causes in a professional manner.
- Maintain focus and poise during support cycle and work through all challenges with results-oriented attitude and relentless focus on enhanced customer service through rapid incident resolution.
- Collaborate and communicate accurately with people at different technical knowledge level ranging from Subject Matter Experts, Services Managers to Vendor Support Teams, etc, with the goal of aligning all parties towards achieving incident resolution as quickly as possible.
- Perform pre-defined configuration assurance/standard checks to satisfy Risk & Control and Safety & Soundness initiatives as part of proactive configuration management of all NSS managed technology infrastructure.
- Refine and improve existing processes to accomplish the desired results with better efficiencies and effectiveness.
- Maintain written operational procedures for the organization including document reviews at predefined intervals, ad-hoc procedure updates in response to operational events, and consistently high quality document management.
Technology Infrastructure/Data Center Engineer
Citibank Singapore
02.2015 - 08.2019
- Field network support/O&M of Citibank remote network branches and offsite ATM machines. Liaise with 3rd parties (Certis/ISS) for planned maintenance(s). Interfaces with different support groups related to projects, deployment, and incident-related issues.
- Interfaces with multiple telco (ie Starhub, Singtel) and hardware vendors (ie Cisco, Juniper, F5, Citrix, Arista) for any carrier-related issues and hardware-related problems and/or troubleshooting
- Handles datacenter operations for network devices. Assist vendors and ensure they adhere to the datacenter operation policy.
- Coordinate with site operations for new network equipment roll-in and power certifications
Provides level 1 troubleshooting including but not limited to cabling, hardware replacements, hardware installation/decommissioning, sniffer (Riverbed Cascade and Shark) setup, terminal server setup for console connections etc. - Datacenter Critical IP address administrator for legacy network. Provides IP allocation and administration to support platform expansion and works closely with regional SAs and Integration teams. Worked in close coordination with DNS team for such IP requests (Vital QIP).
- Operation and maintenance of legacy Windows 2000 SNA servers
- Dual role as Tier 2 network core infrastructure support. Functions as level 2 support for supporting network-related issues across the globe
Senior Network Analyst
Citibank Singapore
05.2012 - 01.2015
- Provides level 1/2 technical support for LAN/WAN/MAN/WLAN technologies
- Intermediate investigation, diagnoses, resolution, recovery and closure for network incidents across all network technologies.
- Vendor engagement for 1-to-1 hardware replacements and ensuring both hardware and software are compliant to GNAST standard.
- Fault management and act as initial point of escalation for network-related issues and escalation to peer groups and vendors to resolve an incident in a timely manner.
- Accepts escalation from various support groups and escalate incidents to shift manager, NCIS, and SME when necessary as determined by business impact, risk, and type of scenario. Gathers technical details and presents in a clear and concise manner to the escalation point for immediate review and analysis.
- Leading informal training sessions to new tech analysts. These includes mentoring, tools familiarization, process documents, and call handling.
- Work with different telecom provider in ASPAC, EMEA, LATAM, and NAM for circuit-related problems and ensure restoration is within SLA
- Technical lead when major incident procedure, rapid response, and ISP threat are invoked.
- Work with third party customers/vendors and support groups for issues related to B2B (Business to Business) connectivity.
- Raise and implement change records that must adhere with Global Command Center process.
Senior Network Controller/Network Controller
AT&T Worldwide Telecom Services Singapore
09.2007 - 04.2012
- Tier 2 support for LAN (WLAN, Packetshapers, Riverbed Steelhead) and WAN/MAN (routers and switches).
- Team Subject Matter Expert responsible for mentoring of team members on escalated and/or technical issues.
- Acting as a backup team leader and act as peer level escalation point in the event Team Leaders or Operation Managers are otherwise unavailable
- Conduct in-depth analysis of US, EMEA, and APAC telco circuit impairments by accessing data output from multiple support systems.
- Conduct in-depth analysis of Layer 3 and above OSI protocols. Interface with internal network support groups in direct support of customer applications utilizing said protocols, suggesting corrective measures and providing technical feedback as necessary to ensure issue being managed correctly.
- Working with internal support groups recommending diagnostic tests and possible alternative network configurations based on degree of service impairment. Identify both common and uncommon problems with test results and assist in formulating advance action plans towards resolution as the need dictates.
- Communicating and interfacing with different hardware vendors such as Cisco, NCR, Riverbed, Bluecoat, and CTDI for hardware replacement and troubleshooting. Also includes working with access providers or PTT to resolve layer 1/2 issues.
- Negotiating and coordinating with support centers on all sectionalization and testing plans; communicating findings directly to customer technical contact.
- Escalates according to process based on established outage intervals. A complete understanding of Direct Measurement of Qualities (DMOQs) and management structure is required to properly restore service within allotted timeframes.
- Established a new MIS (Managed Internet Service) center in Bangalore, India. Provided lecture-type classroom training with hands-on for the new Tier 1.5 center for managed internet service offerings.
- Conducted training for my peers for an overview of Juniper M/T/J routers which includes router architecture and JUNOS.
Specialist/Senior Engineer
Innove Communications Inc.
10.2003 - 08.2007
- Acting as backup team supervisor. Manages team workload and dispatches and manages parts inventory.
- Part of evaluation committee for Multi-service access platform project. Provides implementation plan for proof of concept testing.
- Responsible for ensuring 100% network manageability through pro-active monitoring of all network elements either through in-band, wireless out-of-band management (M2M) or dial-up access.
- Conceptualization, provisioning, implementation and maintenance of M2M (machine-to-machine) option for out-of-band management. Installation of GPRS router and telemetry device for proactive monitoring of remote network elements including multiplexers, routers, switches, and even rectifier systems.
- Level 1 field support for Innove's ECI-powered broadband transport network (XDM, BG-40, STM-16, STM-4, STM-1, Gigabit Ethernet)
- Installation and maintenance of Tellabs network architecture (Tellabs 8840 Core routers, 8830 Access Concentrator, 8160 and 8140 Multi-Service Access Edge) and Cisco (Cisco 8220 Edge Concentrators and Cisco 8850 Access Concentrators).
- Installation and/or administration of Alcatel 7300 ASAM and Lucent Stinger DSLAMs.
Responsible for structured cabling/pre-wiring for DSL applications (SDSL line, ADSL line and POTS, G.SHDSL)
Associate Systems Engineer/Systems Engineer
Globe Telecom GMCR Inc
07.1999 - 09.2003
- Responsible for in-depth analysis of recurring network outages. Provides simulation/testing and recommendation.
- Evaluation of newly installed network elements for acceptance. Testing/ monitoring of ATM trunks (E1/DS3/STM1). Activation of broadband circuits (E3, DS3 and STM1/OC3). Has basic knowledge on fiber facilities such as AT&T Optical (or Fiber) Distribution Frame (ODF/FDF) and Fujitsu MSX.
- Installation/commissioning of access nodes (Multiplexers and DSLAMs). Also includes software upgrade of DSLAMs
- Operation and maintenance of PECO and Acbel power plant (rectifiers and inverters)
- Field support / O&M for Globe Telecom's ATM network backbone (Multi-Services Digital Data Network or MSDDN). Installation and maintenance of MSDDN nodes (RAD Megaplex, DXC 10, DXC 30, LRS).
Migration of legacy leased line circuits to ATM-based network architecture. - Design, installation, and maintenance of International Private Lease Services (IPLS) and Domestic Private Lease Services (DPLS).
- Coordination with other foreign and local telecommunication carrier for the installation and maintenance of customer circuits.
- Technical support for dial-up and lease services.
Handles different test equipment such as Bit Error Tester (Fireberd 6000A), Data Tester (Protocol Analyzer), Spectrum Analyzer, TIMMS (Transmission lmpairments measurement system), and HP Internet advisor. - Customize and build cables such as RS232/V.24, RS530, V.35, G.704, and RS449 to interconnect data communication and networking equipment.
- Installed Akamai servers (18-server setup) for web content caching.
- Participating administrator for Connect Plus Virtual Backbone Network (VBN) and Telemedia International (TMI). Provides first level maintenance of international lease circuit.
Education
Bachelor of Science - Electrical, Electronics And Communications Engineering
Mapua Institute of Technology
Intramuros Manila10.1998
Skills
- Operation and maintenance of Cisco routers and switches, Juniper routers, Arista, Riverbed Steelhead appliance, Bluecoat Packetshaper, Cisco Wireless LAN Controllers and Access Points, and Load Balancers (Citrix Netscaler MPX and F5 BigIP)
- Conduct in-depth analysis of Layer 3 and above OSI protocols ranging, but not limited to, BGP, OSPF, EIGRP and static routing protocols to application layer protocols such as DNS, FTP and SMTP
- Conduct in-depth analysis of US, EMEA, and APAC telco circuit impairments by accessing data output from multiple support systems Responsible for customer interface and overall impairment resolution
- Installation (and provisioning) of Multiplexers, Digital Cross Connects (DXC), Rectifier and Inverter systems, DSLAMs, and Cisco routers and switches (and line cards) and Huawei routers Knowledge in structured cabling and customizing data communication cables
Certification
- Cisco Certified Network Professional (CCNP - validity: Oct 2023)
- Cisco Certified Network Associate Voice (CCNA Voice)
- Juniper Networks Certified Internet Associate JNCIA-ER (Expired)
- ECE Professional Licensure Examination - April 1999
- Civil Service Examination - May 1999
TRAININGS/WORKSHOPS
- Implementing Cisco SD-WAN Solutions (ENSDWI) - Sep 12-16, 2022 @ Trainocate Singapore
- VMWare - June 12-14, 2017 @ Global Knowledge Singapore
- IPv6 Training - Oct 10-13, 2011 @ AT&T Singapore
- Establishment of new MIS center in Bangalore India - Sep 04-25, 2009 @ Bangalore India
- Juniper Training (JNCIA) - June 15-19, 2009 @ AT&T Singapore
- Cisco Certified Network Professional boot camp - Feb 21 - May 11, 2005 @ Training Partners Philippines
- Basic Management Program @ Globe Telecom, Philippines
June 14-15, 2005 (Module 1)
June 21-22, 2005 (Module 2)
June 28-29, 2005 (Module 3) - Cisco Open Packet Telephony Training - May 24-27, 2004 @ Cisco Systems Makati Philippines
- Alcatel 7300 ASAM & 5523 NG-AWS Training - Sep 22-27, 2002 @ Alcatel University Kuala Lumpur, Malaysia
- Other Trainings/Workshops:
Basic Telecom Network - January 19-21,2000 (Telecoms Training Institute Valenzuela Philippines)
Fundamentals of Unix - June 26-30, 2000 (Hewlett Packard Makati City Philippines)
Broadband Networking Technologies (ATM and Frame Relay) (July 26-27, 2000 Decision Systems Makati Philippines)
Ericsson DSL Ethernet Workshop (January 29, 2003 Shangri-La Hotel Philippines)
ECI uSDM Training (May 02, 2003 ECI Antel Building Philippines)
ECI XDM Comprehensive Training (July 19-23, 2004 ECI Antel Building Philippines)
SDH Training ( Singtel, December 06-10, 2004 Astoria Plaza)
ADC DSX and Krone Training (December 14,2005 ADC Philippines)
Alcatel 7324RU IP DSLAM Training (December 19,2005 Alcatel Philippines)
- In-house trainings/workshops (Globe Telecom/Innove Communications):
Competency Workshop - July 14, 2000
Introduction to Multi-Services Digital Data Network - December 4-6, 2000 - In-house trainings (AT&T Singapore):
QOS & Performance Problem Determination (March 26,2008)
Advance MPLS Training (April 03, 2008)
QOS (April 23, 2008)
OVO, SMART and PMOSS Training (May 15,2008)
GT3 VDNA Training (June 17, 2008)
Timeline
Infrastructure Senior Tech Analyst
Citibank Singapore
09.2019 - Current
Technology Infrastructure/Data Center Engineer
Citibank Singapore
02.2015 - 08.2019
Senior Network Analyst
Citibank Singapore
05.2012 - 01.2015
Senior Network Controller/Network Controller
AT&T Worldwide Telecom Services Singapore
09.2007 - 04.2012
Specialist/Senior Engineer
Innove Communications Inc.
10.2003 - 08.2007
Associate Systems Engineer/Systems Engineer
Globe Telecom GMCR Inc
07.1999 - 09.2003
Bachelor of Science - Electrical, Electronics And Communications Engineering
Mapua Institute of Technology
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