Alejandro Diaz Limon portrait
Currently an Extern @Wayfair

🟢 Open to work

Computer science junior blending finance interest with hands-on IoT security experience

Junior at the University of Florida, learning to apply code and security practices to finance-adjacent problems through practical externship work.

Work samples

Portfolio of hands-on work, including the Hydroficient IoT Cyber Defense externship where I tested attacks and implemented defenses like TLS and mTLS.

  • Hydroficient IoT Cyber Defense Externship
    Hydroficient IoT Cyber Defense Externship
    Hydroficient logo

    Hydroficient · Aug 2026 · ✅ Verified by Extern

    Hydroficient IoT Cyber Defense Externship

    Build, hack, and defend real IoT infrastructure, then hand your security playbook to an actual company. You’ll launch realistic cyberattacks, from spoofing and replay attacks to unauthorized shutoffs, and implement defenses like TLS and mTLS.

    Python ProgrammingData AnalysisThreat ModelingDashboard Development
  • Wayfair n8n AI Agent Engineering Externship
    Wayfair n8n AI Agent Engineering Externship
    Wayfair logo

    Wayfair · ✅ Verified by Extern · ⏱️ In progress

    Wayfair n8n AI Agent Engineering Externship

    Learn one of the most in-demand skills shaping the future of work: building AI agents. In this externship, you’ll step into the role of an AI Agent Developer and use n8n to design agents that think, plan, and act on real data — automating insights, decisions, and workflows. No coding experience required. By the end, you’ll create a live dashboard powered by your own AI agents, gaining hands-on experience that applies to any role or industry — from marketing and consulting to product management and data science.

    AI Workflow DesignAI Agent DevelopmentPresentation SkillsWeb Scraping & Data Extraction

About me

Junior at the University of Florida, learning to apply code and security practices to finance-adjacent problems through practical externship work.

I am a junior computer science student at the University of Florida focused on finance-related tech. I have some practical experience through hands-on externship work defending IoT systems and want to build confidence applying technical skills in real-world environments.

Externships

Wayfair n8n AI Agent Engineering Externship

Wayfair

Education

University of Florida

B.S Computer Science · Class of 2027

Skills

PythonC/C++Network securityTLS and mTLSIoT device testingCybersecurity fundamentals

✅ Verified by Extern

Hydroficient IoT Cyber Defense Externship

Build, hack, and defend real IoT infrastructure, then hand your security playbook to an actual company. You’ll launch realistic cyberattacks, from spoofing and replay attacks to unauthorized shutoffs, and implement defenses like TLS and mTLS.

Python ProgrammingData AnalysisThreat ModelingDashboard Development

Overview

The work targeted the Grand Marina hotel's IoT water system. The project inventoried assets, produced a STRIDE threat model with three prioritized findings, built tooling to parse mock sensor logs, mapped an MQTT topic hierarchy and exposure analysis, and implemented TLS/mTLS experiments measuring latency and delivery. The deliverables included a provisioning policy and replay-attack experiments

Hydroficient IoT Cyber Defense Externship

What I've accomplished

I produced a STRIDE-based threat model with three prioritized findings, Python parsing scripts for mock sensor logs, an MQTT topic map and exposure analysis, a tested TLS/mTLS pipeline with measured latency and delivery metrics, a device provisioning policy, and replay-attack experiments demonstrating that combined defenses stopped all attacks.

Project breakdown

View all work

✅ Verified by Extern · ⏱️ In progress

Wayfair n8n AI Agent Engineering Externship

Learn one of the most in-demand skills shaping the future of work: building AI agents. In this externship, you’ll step into the role of an AI Agent Developer and use n8n to design agents that think, plan, and act on real data — automating insights, decisions, and workflows. No coding experience required. By the end, you’ll create a live dashboard powered by your own AI agents, gaining hands-on experience that applies to any role or industry — from marketing and consulting to product management and data science.

AI Workflow DesignAI Agent DevelopmentPresentation SkillsWeb Scraping & Data Extraction

Overview

The externship introduced AI agent development using n8n, covering agent design, workflow orchestration, and dashboarding. The work involved installing and exploring the n8n platform and constructing agent-driven workflows. Deliverables included a configured n8n instance and a live dashboard fed by the agents.

Wayfair n8n AI Agent Engineering Externship

What I've accomplished

I built a working Prompt Node in n8n that formatted style and detail fields for an image-generation API and integrated it into a runnable workflow.

Project breakdown

During the externship I built a Prompt Node and wrote a focused image prompt describing a techno red, cyberpunk neo-brutalist moodboard. I submitted the prompt text that the agent used to generate the moodboard visuals.

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