Systems Administrator Network Engineer
Resume:
Daniel A. Marrujo Sr
*************@*******.***
Summary
Network Administrator / Systems Administrator (Sysadmin) 28+ Years of Expertise in Telecom & MSP
With over 28 years of hands-on experience in the telecom and Managed Services Provider (MSP) industry, I have developed deep expertise in managing and optimizing complex IT infrastructures. I am particularly skilled in troubleshooting, overseeing server and desktop environments across various platforms, ensuring robust, secure, high-performance systems. I plan, deploy, and configure enterprise-level networks and IT solutions that achieve exceptional availability and reliability.
Key Skills and Areas of Expertise:
Network Infrastructure Design & Optimization
Server Administration (Windows, M365, MS Teams, MS Intune, Linux, AWS, Virtualization)
Desktop Environment Management (Windows, Mac OS)
Cloud Solutions & Virtualization (AWS, Azure, VMware)
IT Security & Compliance (Firewalls, VPNs, Encryption)
Disaster Recovery & Backup Solutions
Troubleshooting & Performance Tuning
Automation & Scripting (PowerShell, Bash)
Project Management & Team Leadership
Throughout my career, I have consistently demonstrated my ability to manage and optimize large-scale IT environments, ensuring seamless operations and minimal downtime. My proficiency in handling complex projects, implementing cost-effective solutions, and leading teams to meet business objectives while aligning with industry’s best practices is a testament to my competence and reliability.
Professional Experience
Gainwell Technologies 11/18/24 – current
Systems Administrator (Sysadmin)
Responsibilities:
Hardware and Software Management: Installing, configuring, and maintaining computer hardware and software, including operating systems, applications, and network devices.
System Monitoring and Troubleshooting: Monitoring system performance, identifying and resolving technical issues, and ensuring system uptime and availability.
Security: Implementing and maintaining security measures to protect the organization's IT infrastructure from threats and vulnerabilities.
User Support: Providing technical support to users with Windows 10 / 11 Desktop, AWS, addressing their hardware and software issues, and training them on system usage.
Backup and Recovery: Developing and implementing backup and recovery procedures to ensure data integrity and business continuity.
Configuration Management: Managing system configurations, ensuring consistency across different environments, and documenting system setups.
Network Management: Configuring and maintaining network infrastructure, including routers, switches, firewalls, and other network devices.
Cloud Services: Managing and maintaining cloud infrastructure, including virtual machines, storage, and databases.
Network Design Associates, Inc.
Help Desk Analyst III 6/15/22 – 10/25/24
. Technical Support: As an NDA MSP L2 technician, I handle incoming technical support calls and tickets. They provide technical assistance to clients or end-users who encounter IT issues.
Problem Resolution: I focus on resolving technical issues that require more advanced troubleshooting skills. I tackle problems that may take longer to resolve than basic inquiries.
Triage and Prioritization: I triage incoming issues, assessing their severity and urgency. I prioritize tasks based on their impact on clients' operations.
Installation and Diagnosis: My role may involve installing hardware or software and diagnosing and resolving complex technical problems.
Independence and Teamwork: I demonstrate the ability to work independently and as part of a team. I will collaborate with colleagues and other departments to ensure efficient problem resolution.
I have excellent communication and customer service skills, essential for interacting professionally with clients or end-users and resolving their technical concerns.
Utility Telecom /MSP Stockton, CA 7/17/2017 – 6/10/22
MSP IT SYSTEMS SUPPORT ENGINEER – TIER III
Responsibilities
Respond to assigned Level III help desk service requests
Become the go-to resource through technical aptitude and the support team lead through leading by example
Perform troubleshooting for assigned incidents
Perform standard changes related to moves, adds, modifications, and deletions by documented standards.
Monitor and respond to alert service tickets
Provide communication updates verbally and in writing while thoroughly documenting each step of the process in the ticket
Utilize PSA, ITSM, and RMM systems to obtain and update relevant information
Develop internal and client-facing documentation.
Communicate and coordinate with internal and external resources to ensure optimal processing of service requests
Ensure accurate and real-time entry of service request details, notes, and time tracking
Ability to work and be available during our regular business hours
Availability to work after hours and weekends, as needed
Technical Proficiencies
Excellent verbal and written English communication.
Active listening skills and ability to empathize with people.
Resourcefulness in finding answers to new problems.
Driven to learn new technologies, methods, and practical skills.
Windows 10, 11, and Mac OS
Microsoft Office
Applications (QuickBooks, Sage, AutoCAD, etc.)
Microsoft 365 Business applications
Active Directory Domain Services
Cisco Networking Devices
Windows Servers
Cloud services (Azure hosting, Azure AD, AWS, ForgeRock, File sharing, Email, Backup)
Advanced Microsoft Office 365
Virus/Ransomware Troubleshooting
Installing client-side applications on workstations
Advanced Remote Access and VPN Troubleshooting
CompTIA Network +/Security+
Cisco CCNA
Microsoft Azure Administration
Microsoft 365 Administration
Advanced Network Solutions 7/25/2016- 7/7/2017
Lead IT Field Technician
Job Description & Responsibilities:
Oversees the daily operations for a specified location, including software, hardware, tape backups, cable runs/ Installs, phone administration, and the local area network.
Provides level II & III end-user support for software, hardware, and cabling issues.
Oversee the daily operations of the local area network. Installed and upgraded Microsoft Windows operating systems, including standard business applications and associated peripherals.
Troubleshoot Desktop Virus and malware issues. Maintains a daily backup of all network files.
Performs service administration tasks for software and hardware products to ensure the manufacturer's warranty.
Troubleshoot software and hardware problems through debugging, testing, and vendor assistance.
Provides recommendations for program changes to correct software problems.
Assists in purchasing new computer equipment and peripherals for a specified location.
Performs software and hardware inventory.
Basic Administration of Phone and Voicemail systems for the site.
Decisions made with a general understanding of procedures and company policies to achieve set results and deadlines.
Site survey for Cable runs and installs.
Day-to-day trouble tickets
Masley & Associates 10/2010-8/15/2016
Sr Network Engineer
●installing, supporting, and maintaining new server hardware and software infrastructure.
●managing email, anti-spam, and virus protection.
●Set up user accounts, permissions, and passwords.
●monitoring network usage.
●Ensuring the most cost-effective and efficient use of servers.
●Suggesting and providing IT solutions to business and management problems.
●Ensuring that all IT equipment complies with industry standards.
●analyzing and resolving faults, ranging from major crashes to forgotten passwords.
●Undertaking routine preventative measures and implementing, maintaining, and monitoring network security, particularly if the network connects to the internet.
●Provide training and technical support for users with varying IT knowledge and competence levels.
●supervising other staff, such as help-desk technicians.
●working closely with other departments/organizations and collaborating with other IT staff.
●planning and implementing future IT developments and undertaking project work.
●managing the website and keeping internal networks running.
●Employees monitor the use of the Web.
Computer Network Skills
Certified Cisco CCNA Routers and Switching
Certified Microsoft MCP
Certified Novell CNE
CCNP
MCSE
Certified ITIL
Certified PMI
ConnectWise PSA Engineer/Technician
SSCP Certified in Cybersecurity
Certified Sophos ET80,ET15, ET12 Engineer
Certified RingCentral Administrator
IP Telephony Certified
MS Teams Telephony
CISCO Wireless
Security and Surveillance
Juniper Remote Access VPN
Helpdesk / Call Center
Education
University of Phoenix 06/05
BSIT/ISS Los Angeles
Compu Vista Business Institute 06/91
Network Engineer-Certificate Sacramento, CA
San Joaquin Delta College 06/90
Computer Science & Data Communications Stockton, CA
Mount San Antonio Junior College 06/89
Computer Science and Business Major, AA Degree, Los Angeles, CA
Penn Foster College Computer Support / CompTIA/ A+ Online 06/15
Diploma Certificate Bakersfield, CA
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