JULIAN POSADAS
Hardware & Systems Technician | Windows, Linux, IT Operations
Hands-on experience supporting desktops, laptops, and multi-OS environments with a strong focus on hardware troubleshooting, system imaging, and secure operations.
Cum Laude graduate with a long-term interest in defense technology and mission-critical systems.
Education
2021-2024
BA Business Administration (Information Systems)
California State University -Fullerton (Cum Laude)
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Focused on information systems, hardware/software troubleshooting, and system configuration
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Coursework emphasized databases, networking fundamentals, and IT operations
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Developed strong analytical, procedural, and documentation skills applicable to technical support and systems roles
2018-2021
AS Business Administration
Fullerton College
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Built a solid foundation in business systems, communication, and analytical reasoning
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Strengthened problem-solving, technical writing, and quantitative skills
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Discovered early interest in technology, cybersecurity concepts, and programming fundamentals
Experience
Independent Technical Lab & Systems Experience
2018 - Present
Systems & Hardware Operations
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Built, configured, and maintained desktop and laptop systems across Windows and Linux environments
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Performed operating system installations, system recovery, driver troubleshooting, and hardware upgrades
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Diagnosed hardware issues including boot failures, GPU artifacting, storage errors, and OS corruption
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Conducted BIOS and firmware updates and validated system stability
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Installed and tested monitors, peripherals, and docking setups
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Maintained organized hardware inventories and documented troubleshooting processes
2019 - Present
Linux & Secure System Configuration
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Managed Linux environments including Parrot OS, Kali Linux, and Ubuntu
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Configured dual-boot systems and encrypted Linux volumes (LUKS)
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Worked with Secure Boot, TPM concepts, and access control fundamentals
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Applied structured troubleshooting methods to resolve system-level issues
2021 - Present
Additive Manufacturing & Rapid Prototyping
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Over five years of experience with 3D printing and rapid prototyping
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Implemented custom firmware and system configurations to improve performance and reliability
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Performed printer calibration, preventative maintenance, and material evaluation
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Analyzed print failures and refined repeatable production workflows
2014 - Present
Mechanical Systems
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Extensive hands-on experience rebuilding automotive engines and transmissions from the ground up
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Familiar with proper maintenance procedures to ensure optimal performance and long-term reliability
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Applied disciplined diagnostic methods to identify and resolve mechanical failures
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Worked within tight tolerances and followed precise sequencing and assembly procedures
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Interpreted technical documentation, schematics, and service manuals
Professional Experience (Operations & Customer-Facing)
2018 - Present
Independent Contractor — Logistics & Operations
Amazon Flex
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Managed time-sensitive deliveries while adhering to strict operational requirements
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Adapted to changing schedules, traffic conditions, and route disruptions to maintain on-time performance
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Adjusted task sequencing in real time to respond to out-of-order stops and unforeseen constraints
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Followed standardized procedures and digital workflows independently
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Demonstrated reliability, accountability, and consistent execution without direct supervision
October 2017 - August 2021
Lead Chef / Operations Support
Vito's Italian Restaurant
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Operated in a fast-paced, high-accountability environment requiring accuracy, reliability, and consistency
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Coordinated with team members to maintain efficiency during high-volume periods
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Communicated clearly with customers and staff to resolve issues quickly and professionally
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Demonstrated long-term dependability through multiple years of continuous employment
November 2015 - August 2017
Server / Customer Operations
Gen Korean BBQ
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Delivered accurate, customer-focused service in a high-volume operational setting
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Balanced multiple concurrent tasks while maintaining quality and professionalism
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Supported team coordination and escalated issues appropriately
J
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I am a Cum Laude graduate from California State University, Fullerton with a Bachelor of Science in Business Information Systems. My focus is hands-on technical support, hardware diagnostics, and system configuration across Windows and Linux environments.
I have practical experience building, configuring, and troubleshooting desktops and laptops, managing peripherals, performing operating system installations, and resolving system-level issues. I value structured processes, clear documentation, and working in environments where reliability, accountability, and security matter.
I am actively pursuing opportunities in defense and national security technology and am eligible to obtain and maintain a U.S. Secret security clearance. Over time, I aim to continue developing my cybersecurity skill set, particularly in areas related to secure system configuration, access control, and operational security that support mission-critical systems.
Certifications
2023
SQL Essential Training
2023
MYSQL Essential Training
2023
Database Foundations: Intro to Databases
2023
Programming Foundations: Databases
2021
Cyber Skyline: National Cyber League (NCL) Team & Individual Game Participation
Core Technical Skills
Windows 10 / 11
Hardware Troubleshooting
OS Imaging & Configuration
Security Fundamentals & Operational Awareness
Linux Systems (Parrot OS, Kali, Ubuntu)
Python (Scripting & Fundamentals)
C# (Foundational / Coursework)
MS Office Suite
SQL / MySQL (Querying & Fundamentals)
Soft Skills
