Alain Estrellas

Experience

• 

  TranzGlobal Call Center, Inc.

  Jan 2006 - Jun 2013

  - Managed four teams: Network & Monitoring, Server & Security, Voice, and System.- Reported operational status to IT Manager and coordinated project plans with other department managers.- I worked collaboratively with senior management to deliver innovative and cost-effective IT solutions.- I have created and recorded all essential IT reports and procedures. - I was in charge of managing the Network, Monitoring, and Voice teams.- Installed and optimized the company's Data and Voice network devices including Cisco routers, switches, and VoIP gateways.- Regular network maintenance and upgrades were performed; network performance monitoring tools were implemented, and steps were taken to troubleshoot issues to ensure that network performance met service level targets. - I led the System Team that was responsible for providing IT and desktop support.- I provided second-tier support for the office's network and system operations.- Installed, configured, and maintained Cisco routers and switches, as well as HP and Dell servers and related equipment.- Managed Windows and Linux servers, including Domain Controller, DNS, Active Directory, DHCP, Nagios, MRTG management system, SIP, and web servers. - Served as primary support for office network and system operations, including LAN, switch, PC, IP phones, and peripherals.- Managed user accounts in Active Directory, email, and web access. This includes creating, deleting, and modifying user accounts, as well as granting or revoking access to various resources.- Performed maintenance, troubleshooting, and repair of computers.

  • Assistant Manager

    Mar 2010 - Jun 2013

  • Network System Analyst

    Aug 2008 - Feb 2010

  • Senior Network Administrator

    Jul 2007 - Jul 2008

  • Network Administrator

    Jan 2006 - Jun 2007
• 

  OWTEL

  Jul 2013 - May 2019

  Assistant Manager

  Roles and Responsibilities:1. Managed IT projects, operations, budgets, and expenses.2. Designed, developed, and managed the company's IT infrastructure.3. Implemented Linux and Windows systems, managed deployment of the company's data and voice network in Data Centers.4. Proactively collaborate with top management, internal departments, and external vendors to deliver cost-effective and innovative IT solutions.5. Ensure that all required IT reports and procedures are prepared and documented properly.Cloud Computing Systems:- Managed the systems in Amazon Web Services including Elastic Compute Cloud (EC2), Virtual Private Cloud (VPC), and Load Balancer.- Installed, configured, and managed OpenStack as an S3 Object Storage, which includes a High Availability Load Balancer.Network:- Installed, configured, and managed CISCO routers, switches, VOIP, Dell Sonicwall Firewall, and F5 Load Traffic Management. Knowledge and experience with protocols such as Static, BGP, VLAN, GRE Tunnel, IPsec VPN, PPTP/L2TP, VoIP, HSRP, IP SLA, ACL, QoS, T1/E1.Linux Systems:- Installed, configured, and managed various software and technologies such as OpenVPN, FreeRadius, MySQL, and MariaDB databases, web services using Apache and SSL/TLS, Asterisk, FreePBX, SMPP Kannel, PFSense and Untangle firewalls, ClamAV, Fail2ban iptables, Postfix and Zimbra mail servers, DNS, DHCP, network management systems (CACTI, MRTG, and Nagios), shell, and Bash scripting.Windows Systems:- Installed, configured, and managed Microsoft Exchange 2016, Domain Controller, DNS, Active Directory, DHCP, IIS, MSSQL, File, and Print servers. Show less

• 

  DETASAD

  Jun 2019 - now

  Senior Cloud Engineer

  Roles and Responsibilities:1. Performing capacity and demand planning, resource management, and usage forecasting for cloud-based platforms. 2. Manage the implementation of dynamically scalable, available, fault-tolerant, and reliable cloud hardware infrastructure including VMware, OpenStack, RedHat Virtualization, and Oracle Cloud systems.3. Install and configure storage including SAN, NAS, FC/iSCSI/NFS protocols, Brocade Switches, Dell Storage PowerStore, PowerVault, Compellent, Lenovo NetApp, and Cloudian S3 Object Storage.4. Manage complex, multi-tier cloud applications with Hystax Acura for disaster recovery and migration.5. Regularly perform firmware upgrades on Dell PowerEdge and Lenovo ThinkSystem servers.6. Regularly update and maintain operating systems with the latest security patches and fixes to meet security standards.Projects: 1. NEOM Residential Community - As a Senior Engineer, I am responsible for implementing various ICT systems in Data Centers such as Passive ISP & OSP, Core Networks (GPON, OLT, WIFI), CCTV, IPTV, ELV Systems (RTLS, NCS, QMS) and VMware based on the design.2. DETASAD Cloud - As a Senior Cloud Engineer, responsible for implementing DETASAD Cloud on the Vmware Cloud Director platform, including configuring hardware infrastructure such as servers and SAN storage.Achievements:1. Outstanding performance, productivity, and dedicated services in October 2020.2. Contribution to the development of DETASAD Strategy 2025 in February 2021.3. Learning the Palladium Execution Premium Process and The Balanced Scorecard Methodologies in June 2021.4. Outstanding performance in May 2022.5. Successful completion of the IMI Migration Project in June 2022.6. Outstanding performance and achievement in February 2023. Show less