FÁBIO FRANCISCO DIAS
Abu Dhabi,United Arab Emirates
Summary
With over 15 years of experience in Unified Communications and Network Security, I have been part of projects and teams at some of the world's leading telecom and technology giants, including AT&T, BT, HP, and IBM. I began my career in Unified Communications, developing a strong expertise in voice, video, and collaboration technologies across platforms such as Cisco, Avaya, and Alcatel. Over time, I expanded my skill set to include network and security management, managing firewalls, VPNs, intrusion detection systems, and cloud security solutions. Known for quickly mastering complex technologies, I am certified in ITIL V3 Foundation and Six Sigma (White & Yellow Belt). Passionate about innovation, continuous improvement, and process optimization, I leverage my extensive experience to design, deploy, and manage advanced solutions that drive business success.
Overview
19
19
years of professional experience
2010
2010
years of post-secondary education
Work history
Sr. Network & Security Engineer
Edge Business Services
Abu Dhabi, UAE
11.2023 - 06.2025
- I am responsible for managing and executing projects related to network infrastructure and security, contributing to the protection, optimization, and innovation of the organization's technological environment.
- I oversee the security of networks, data centers, and cloud environments, ensuring alignment with industry best practices and business needs.
- Planning, deploying, and managing firewalls (Cisco ASA, FTD, Palo Alto, Fortinet, Juniper) and VPN solutions, including SSL VPN with MFA and certificate-based authentication.
- Configuring and maintaining intrusion detection and prevention systems (IDS/IPS), such as FireEye NX and Cisco Firepower.
- Managing heterogeneous network environments, including switches, routers, and SD-WAN (Velocloud).
- Implementing network security strategies, including traffic monitoring, access controls, and log analysis using tools like Splunk.
- Auditing security policies, reviewing configurations to ensure compliance with standards and industry best practices.
- Administering cloud environments, primarily Azure, deploying firewalls and WAFs.
- Data Center projects: designing, implementing, and maintaining physical and logical infrastructure, including network layout, servers, and storage systems.
- Integrating advanced security solutions such as web proxies (Bluecoat, Cisco WSA, Zscaler), email security, and threat prevention systems.
- Supporting operational teams in incident response, vulnerability management, and root cause analysis.
- Participating in security risk assessments, penetration testing, and implementing mitigation plans.
Sr. Unified Communications Engineer
Digital 14
Abu Dhabi, UAE
06.2018 - 10.2023
- I was responsible for managing the end-to-end operations of large-scale unified communication solutions, ensuring seamless voice and video connectivity across the organization.
- I supported over 900 endpoints, including video conferencing systems, telepresence solutions, and integrated collaboration platforms, maintaining high availability and optimal performance.
- I also led support for a high-priority government entity's call center, ensuring continuous service for critical operations using UCCX.
- Led all aspects of Voice Network Operations, including infrastructure planning, deployment, and ongoing maintenance.
- Managed and supported Unified Communication solutions (Cisco UC, IM & Presence, Unity, TMS, etc.) integrated with Microsoft Exchange.
- Supported and maintained UCCX for a government call center, ensuring optimal performance and responsiveness.
- Ensured system stability, security, and performance through troubleshooting, implementation, and regular maintenance.
- Managed lifecycle and capacity planning for scalable UC environments, aligning them with future business needs.
- Developed SOPs and WIs to streamline operations, support health checks, and ensure adherence to ITIL best practices.
- Conducted knowledge transfer and skill-sharing sessions with support teams to ensure smooth operations.
- Provisioned mobility solutions and managed IMAC requests for CUCM, CUC, and CME systems, ensuring compliance with ITIL standards.
- Hardened UC environments and integrated with monitoring tools to ensure optimal performance and security.
Unified Communications Engineer
HP - Hewlett-Packard
Sao Paulo, Brazil
10.2011 - 06.2018
- Provided tier 3 technical support for voice networks across multiple UC platforms and managed cross-functional teams to ensure optimal service delivery.
- Tier 3 Technical Support for voice networks (Cisco, Nortel, Alcatel and Avaya´s platforms).
- Engagement and management of vendors and remote teams.
- Handled high-priority voice incidents, changes, and problems, reducing downtime and ensuring SLA compliance.
- Monthly metrics and reports for the management board.
- RCAs, process documentation and service improvements.
- Insourcing and outsourcing VOIP SME consultant, responsible for project management, documentation and baselines for clients.
- Resource management and coordination, across multiple clients from different sectors (Pharmaceutics, Petrol, Mining Company, Franchise Bottler, Bank).
- Communicating between the teams and following up with vendors, providing feedbacks to stakeholders on project status and operations.
- Handover from project to operations (HLD, LLD, topologies, SOPs, WIs and Knowledge transfer).
- CUCM, CME, Unity, PSTN, VGs, CUBE, DSP, UCSs, CDR, Avaya IP500, Avaya S8XX, Intuit Audix, Alcatel Omnipxc solutions.
Network Voice Analyst
BT – British Telecom
Campinas, Brazil
09.2010 - 10.2011
- Provided tier 3 technical support for national and international voice network platforms, ensuring smooth operations for BT's Brazil division.
- Technical Focal Point for BT's Brazil voice operations.
- Technical Support Level 3 for national and international voice networks platforms: IPT (Cisco Call Manager: 4, 5, 6, 7 and 8, IPCC, Unity, Express, VGs 224 and VGs248), TDM (Avaya, Nortel and Ericsson), Analog and digital phones, Video conference (Polycom and Tandberg).
- Providers/ maintainers engagement and follow up.
- Management of: incidents, changes, IMACs, problems and RFCs.
Unified Communications Specialist
IBM /AT&T
Campinas, Brazil
09.2006 - 09.2010
- Delivered technical support for international VoIP environments, managing Avaya-based solutions and performing complex system maintenance.
- Technical Support Level 2 (Incident, Problem, Change and IMAC's) for International accounts with VoIP environment based on Avaya solution.
- Avaya PBX (S8700 Family/Prologics) - Perform test and simulations in order to identify technical issues and work for their resolution.
- CMS / CTI – Call Center features and server basic maintenance (backup, reboot).
- Modular Messaging – Server maintenance, subscriber management, configuration and support for features.
- Intuity Audix - Subscriber management and server maintenance.
- IP Agent /IP Softphone – Installation, configuration and troubleshooting.
- Vendor and remote teams engagement: interaction and management to ensure the Service Level Agreements (SLA).
- Implementation and planning for new projects: Site surveys, documents validation, create and analyze technical documentation.
Education
Bachelor's degree - Information Technology
Brazilian Institute of Advanced Technology – IBTA
Campinas/BrazilSkills
- Security & Network: Firewalls (Cisco ASA, Palo Alto, Fortinet), IDS/IPS (FireEye NX, Cisco Firepower), VPNs, SD-WAN (Velocloud), WAF (Web Application Firewall)
- Unified Communications: Cisco CUCM (Cisco Unified Communications Manager), IM & Presence, CMS (Cisco Meeting Server), TMS (Telepresence Management Suite), CUBE (Cisco Unified Border Element), CME (Cisco Unified Communications Express), UCCX (Unified Contact Center Express)
- Technical Documentation: HLD, LLD, SOP, RFC, BoM
Languages
Portuguese
Native
English
Fluent
Spanish
Intermediate
Timeline
Sr. Network & Security Engineer
Edge Business Services
11.2023 - 06.2025
Sr. Unified Communications Engineer
Digital 14
06.2018 - 10.2023
Unified Communications Engineer
HP - Hewlett-Packard
10.2011 - 06.2018
Network Voice Analyst
BT – British Telecom
09.2010 - 10.2011
Unified Communications Specialist
IBM /AT&T
09.2006 - 09.2010
Bachelor's degree - Information Technology
Brazilian Institute of Advanced Technology – IBTA
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