Jafet Ortiz Duenas
San Lorenzo,USA
Summary
Aspiring network technician currently pursuing CompTIA Newtwork+ and CCNA certifications.
Strong foundational Knowledge of TCP/IP, routing and switching concepts, VLANs, OSPF, and network troubleshooting.
Hands-on practice configuring and troubleshooting Cisco devices using CLI and Packet Tracer.
Motivated to contribute to reliable and secure network operations in a junior networking role.
Overview
8
8
years of professional experience
2
2
Certification
Work History
Construction Technician
ALCAL - Specialty Contracting
01.2017 - 04.2025
- Performed Installations and repairs following technical specifications
- Identified leask and system failures and implemented corrective actions
- Worked safely in team environments under tight deadlines
- Assisted with troubleshooting mechanical and system-related issues
Field Technician
Bay Air Syatems
02.2022 - 12.2023
- Troubleshot system issues by identifying root causes and verifying corrective actions
- Followed technical diagrams and schematics to complete installations accurately
- Worked independently and as part of a team in time-sensitive environments
- Maintained detailed documentation and ensured compliance with safety standards
- Provided professional customer-facing support on job sites
Construction Technician
Alliance Roofing
11.2019 - 01.2022
- Performed Installations and repairs following technical specifications
- Identified leask and system failures and implemented corrective actions
- Worked safely in team environments under tight deadlines
- Assisted with troubleshooting mechanical and system-related issues
Waterproofer & Roofer
ALCAL - Specialty Contracting
11.2017 - 01.2019
- Preparation and Installation of Water Proofing and Roofing.
- Below Grade, Injections, Coating, Hot Rubber, and use of Kettle Machine.
- Tear off, Shingles and Single Ply Roofing Installation.
- Waterproofing Foundations of Newly Built Commercial Buildings to ensure water damage will not occurs.
- Repair Leaks.
Education
High School Diploma -
Quest
San Leandro, CAInformation Technology
Chabot College
Hayward, CASkills
- Networking: TCP/IP, OSI Model, Subnetting, VLANs, NAT, DHCP, DNS
- Routing & Switching: Static Routing, OSPF, Inter-VLAN Routing
- Cisco: IOS, CLI, Packet Tracer
- Troubleshooting: Ping, Traceroute, Wireshark
Certification
- CompTia Network+ (In Progress)
- Cisco Certified Network Associate (CCNA) - In Progress
- Google Cybersecurity Professional Certificate
- Google IT Support Professional Certificate
Timeline
Field Technician
Bay Air Syatems
02.2022 - 12.2023
Construction Technician
Alliance Roofing
11.2019 - 01.2022
Waterproofer & Roofer
ALCAL - Specialty Contracting
11.2017 - 01.2019
Construction Technician
ALCAL - Specialty Contracting
01.2017 - 04.2025
High School Diploma -
Quest
Information Technology
Chabot College