Building data science and machine learning / deep learning systems — with a security-first mindset.
CS undergraduate at CUET specializing in data science, machine learning, and deep learning, with a parallel track in application security as a former CISO. I build predictive models, ML/DL pipelines, and data-driven tools — and know how to secure what I ship.
Experience
Security leadership across community-driven Web3 products, alongside a CS degree in progress.
- Owned application security across a handful of community-driven Web3 projects — Harold Health, LightningWorks, Undead Blocks — running threat models and vulnerability assessments before anything went live.
- Worked directly with developers so security got baked into the SDLC instead of being a last-minute checkbox. Harold Health made it to token launch and is now listed on Dexscreener.
- Led an SEO and security audit of the agency's own web presence, producing a prioritized action plan and following up with implemented fixes.
Coursework and project work spanning data structures & algorithms, machine learning, databases, and software engineering — alongside the security and AI/ML work above.
Technical Skills
Led by data science and ML/DL — the security practice sits alongside it.
Data Science, ML & DL
Data & Analytics
Backend & APIs
Databases & DevOps
Blockchain
Security
Projects
Filter by practice area, or browse everything below.
SIEM Log Pipeline + AI Anomaly Detection
Real-time log parsing and feature extraction feeding Isolation Forest and One-Class SVM models to flag anomalous activity.
Cybersecurity Mini Projects
A small Python security toolkit — password auditor, port scanner, DNS lookup, JWT inspector, hash/hex tools, and a Windows event log parser.
Harold Health Security Audit
Identified and remediated a critical broken-access-control vulnerability in a patient-provider credential registry, patched with strict owner validation.
AI Resume Analyzer / BetteResume-ai
A REST API and full-stack app that parses resumes against a job description using NLP/LLM calls, scores ATS fit, and generates targeted feedback.
Customer Churn Prediction
Data cleaning, feature engineering, and model training/evaluation, deployed behind a Dockerized Flask API.
Academic Performance Prediction
ML pipeline predicting student outcomes from behavioral and academic data using a Random Forest classifier.
Loan Approval Prediction
Classification pipeline for credit-risk assessment, comparing SVM and Decision Tree models.
RNN Name Classifier
Character-level RNN built from scratch in PyTorch with custom training vectors for name/nationality classification.
Automated Crypto Market Tracker
CoinGecko API integration tracking BTC, ETH, XRP, DOGE, and BNB with historical Excel storage and automated visual reporting.
COVID-19 Data Exploration
Global COVID-19 dataset analysis in Microsoft SQL Server — data cleaning, joins, and dashboard-ready aggregation.
Nashville Housing — Data Cleaning
Standardized inconsistent formats and removed duplicates in a real-world housing dataset using SQL Server.
Power BI: Data Professional Survey
Interactive dashboard profiling global data-professional salary benchmarks, language preferences, and demographics.
Movies Correlation Project
Explored relationships between budget, gross revenue, runtime, and ratings — heatmaps and scatter plots to surface revenue drivers.
CredChain-Nexus
Blockchain-based academic credential verification system built for Bangladesh's education ecosystem.
PitchIt AI
AI sponsorship-outreach generator that pulls live research through Firecrawl and Tavily before drafting each pitch.
Certifications & Achievements
Certifications
- Google Cybersecurity Certificate
- ISC² Certified in Cybersecurity (CC)
- LetsDefend SOC Fundamentals
Achievements
- Top 938 Worldwide in picoCTF
- Former CISO at W3D, leading security across several Web3 projects
- Competed in IEEE Computer Society and Kaggle Datathon hackathons
Recommendations
A word from the people I've worked with directly.
Kareeb served as Chief Information Security Officer at Web3Discord.com, where he led application security initiatives, ran STRIDE threat models, and conducted vulnerability assessments across the agency's Web3 projects. He also supported data collection, web scraping, AI automation, KPI reporting, and website development, while providing Level 2 ticketing and technical support to the team. He worked well within the team, communicated clearly, accepted feedback, and was dependable and eager to learn — a combination that the letter states makes him a strong candidate for entry-level roles in data science, AI, or machine learning.
Specialized Portfolios
Deeper, dedicated write-ups for the two data practices this site only summarizes — each with its own live site, project write-ups, and repo links.
Publications & Articles
Security write-ups and AI/ML articles, published on Medium.
W3D / Harold Health Security Report
Identified and remediated a critical broken-access-control vulnerability in a patient-provider credential registry.
Read on Medium →More AI/ML & Security Articles
Ongoing write-ups on machine learning projects, application security, and lessons from CTF competitions.
Visit Medium (@kareebsadab) →Let's work together
Open to internships, research opportunities, freelance projects, and full-time roles in Cybersecurity, AI/ML, Data Science, and Backend Engineering.