Hydroficient Externship via ExternJunior at Hofstra studying computer science, building practical IoT cyber defense skills through an externship.
Work shown includes school projects and outcomes from the Hydroficient IoT Cyber Defense externship, focused on IoT security tasks, threat analysis, and defensive techniques.
Built a full-stack web app for logging daily mood check-ins and viewing check-in history, supporting self-awareness and reflection habits Designed and implemented a Flask REST API with CRUD endpoints, input validation, and a SQLite database schema Built a responsive React frontend that consumes the API to display, filter, and update check-in entries Deployed frontend and backend independently, and documented setup and API usage in a project README
Developed a Python application to calculate semester and cumulative GPA from course data with CSV input/output Implemented data validation and error handling for grade entry and credit hour calculations Created visualizations using Matplotlib to display GPA trends and grade distribution patterns
Junior at Hofstra studying computer science, building practical IoT cyber defense skills through an externship.
I am Jayden Polydore, a junior computer science student at Hofstra University working toward a bachelors degree. I have limited professional experience and I completed the Hydroficient IoT Cyber Defense externship to build hands-on skills in IoT security and cyber defense practices.
Externships
Hydroficient IoT Cyber Defense Externship
In progress
Experience
Office Aide
Center for Educational Access and Success · September 2025 - Present
Teachers Assistant
CSTEP Program · June 2025 August 2025
Communications & Outreach Assistant
Center for Educational Access and Success · September 2025 December 2025
Education
Hofstra University Hempstead, New York
Bachelor of Science in Computer Science · Class of 2028
Skills
Built a full-stack web app for logging daily mood check-ins and viewing check-in history, supporting self-awareness and reflection habits Designed and implemented a Flask REST API with CRUD endpoints, input validation, and a SQLite database schema Built a responsive React frontend that consumes the API to display, filter, and update check-in entries Deployed frontend and backend independently, and documented setup and API usage in a project README
Developed a Python application to calculate semester and cumulative GPA from course data with CSV input/output Implemented data validation and error handling for grade entry and credit hour calculations Created visualizations using Matplotlib to display GPA trends and grade distribution patterns
Analyzed student attendance datasets using pivot tables and charts to identify participation trends Created visual summaries to communicate insights and support data-driven decisions
✅ Verified by Extern · ⏱️ In progress
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.
The externship reproduced a commercial water-monitoring IoT deployment and required building, attacking, and defending its components. Work included mapping sensors, brokers, and actuators, executing network-level attacks such as spoofing and replay, and implementing protocol-level defenses. Deliverables documented attack traces and defense configurations.
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I worked through a staged lab that combined field reconnaissance, exploit development, and defensive configuration, producing attack logs, network captures, and hardened protocol settings.
Built a full-stack app that locates nearby sports courts using a FastAPI backend and a JavaScript/Mapbox frontend; designed a /api/courts endpoint with lat/lng/radius query parameters and a custom haversine function; modeled data with SQLAlchemy and SQLite; integrated the Overpass/OpenStreetMap API with httpx and merged live results with database records; built an interactive map with dynamic marker rendering using Mapbox and Google Maps APIs.
