Harasta Rahman Tri Putra
a.k.a. xTheoPutra · @xtheoputra
System Analyst & Full-Stack Engineer · Founder of xTheo Labs
I turn complex requirements into systems that ship. By day I own analysis through production delivery on GEN21 Enterprise, a broadcast and content-management SaaS. In my MSc research at Universitas Pamulang I build an adaptive cyber-defense agent: machine-learning intrusion detection that stays robust under adversarial attack. Under xTheo Labs I build independent products for AI, security, and learning.
Start here
- Portfolio — xtheo-labs.vercel.appExperience, projects, products, research, and contact
- GitHub — @xtheoputraOpen source and building in public
- xTheo Labs on GitHubThe product studio
- LinkedInProfessional profile
- Medium — @harastaputraMachine learning and science explainers: MLP, Random Forest, SVM, regression
- Substack — Tech UnraveledAI, technology, data, cybersecurity, and science, broken down
Products — xTheo Labs
- Silent TearsLocal-first Windows security monitor mapped to MITRE ATT&CK, zero telemetry · Pre-release
- ThinkMateAI thinking partner for big decisions · Live
- HeirstPrivacy-first Android tools: Heirst Clean and Heirst Secure · Public beta
- TechVerse XLearning map for emerging technologies · Live
- Jago BahasaOffline-first PWA for learning 23 languages · Live · Open source
Writing
- Building a local-first Windows defense monitorETW, the Event Log, and MITRE ATT&CK, with zero telemetry
- A 23-language learning app with zero dependencies and no build stepWhat offline-first really takes
- All postsBlog
Featured on Medium
- Inside the MLP: How Neural Networks Learn from DataSep 18, 2026 · 8 min read · forward propagation, loss, backpropagation, gradient descent
- Random Forest: The Architecture of Collective IntelligenceSep 13, 2026 · 12 min read · bootstrap sampling, feature randomness, out-of-bag error
- Support Vector Machines: The Geometry of GeneralizationSep 12, 2026 · 9 min read · margins, soft margins and C, the kernel trick
- Regression: The Language of PredictionJun 10, 2026 · 5 min read · the statistics underneath, least squares, evaluation