A few moments that shaped how I build: solving security puzzles, learning by doing, and earning recognition for the work.
01 / Challenge-led learning
Hackathons & CTFs
Milestone Developer Summit · HackathonFinalist
Hafnia Video Event Analyzer
Jojy Saju Joseph · India / Ireland
Selected as a finalist at the Milestone Developer Summit hackathon in Copenhagen, featured in Milestone Systems’ official press release. The event brought together innovators from 15 countries building on Milestone’s emerging Vision-Language Model powered by NVIDIA Cosmos-Reason and fine-tuned with domain-rich data from Project Hafnia.
The project used Hafnia’s massive real-world video library and the VLM API to analyze video, generate semantic metadata, and enable advanced search and summarization—demonstrating how domain-specific VLMs can transform video understanding and build safer, smarter video intelligence.
Video intelligenceSemantic searchEvent detectionSummarization
A mixed-reality idea board for placing virtual sticky notes on walls and surfaces, turning the surrounding space into an interactive place to capture and organize ideas.
A general-purpose OpenStreetMap heatmap for exploring community service requests in any area. It combines an interactive heatmap with issue, category, time, location, and status filters, matching report summaries, and a monthly trend chart.
A cybersecurity competition from my bachelor’s years. The repository captures a set of hands-on challenges spanning ciphers, hidden data, and file analysis.
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What is a CTF?
CTF means Capture The Flag. Participants solve cybersecurity puzzles to uncover a hidden string called a “flag,” then submit it for points. It’s a practical, game-like way to learn how digital systems and security tools work.
