About
Subin leads security and infrastructure at Quantis Sphere. He runs the web and API penetration tests, hardens the Linux and cloud environments client systems run on, and builds the Wazuh SIEM deployments the security practice is built around — the same person scopes the engagement and does the work.
He is a Cisco-certified ethical hacker with a top-three finish in a national CompTIA Capture The Flag, and Top Rated on Upwork with a 100% Job Success Score across 1,700+ hours and 20 completed engagements. Alongside client work he has delivered 40+ sessions on ethical hacking and security, and led a 350-student security programme.
Experience
Cyber Security & Infrastructure ManagerCurrent
Rhubaia Ventures Inc.
Leads cybersecurity strategy and infrastructure operations — secure system architecture, server hardening, and proactive threat management across the organisation.
Founder & Lead EngineerCurrent
Quantis Sphere LLP
Founded and leads a web engineering and cybersecurity firm delivering websites, penetration testing, hardening and ERPNext implementation to clients in the US and India.
Server Administrator
Zoe Cloud Services · KITS Incubation
Administered Proxmox virtualisation servers, configured Ubuntu environments, and managed networking and port routing for production workloads.
Cyber Security Analyst
Neulancers · Remote
Performed web and API security testing with Burp Suite, Postman and manual techniques; identified, documented and reported vulnerabilities to engineering.
Education
M.Tech (pursuing) in Cyber Security
Karunya University · 2026 – Present
B.Tech in Computer Science and Engineering
Karunya University · 2025
Skills
Security
Infrastructure & Cloud
Engineering
Research interests
Patents(5)
System and Method for the Classification of Prosthetic Hand Movements Using Deep Learning Techniques
Indian Patent Office · 2026
An automated framework that converts dual-modality biosensor data (22-channel glove-sensor recordings and angle measurements) into time-frequency spectrograms to classify prosthetic hand movements using deep learning.
Method and System for Multiple Hand Movement Using Deep Learning to Aid Rehabilitation in Prosthesis
Indian Patent Office · 2025
A system that classifies hand movements from EMG signals using Short-Time Fourier Transform (STFT) spectrograms and a DenseNet-101 deep learning model to aid prosthesis rehabilitation.
BCI Based EEG Motor Imagery Classification Using Spectrogram Images and Inception V3 Model
Indian Patent Office · 2023
An EEG motor-imagery classification system for stroke neuro-rehabilitation using a 64-electrode EEG device, STFT spectrogram extraction, and an Inception v3 model to classify left/right fist motor imagery.
Auto Classification Device for Fungal and Bacterial Keratitis
Indian Patent Office
A device that automatically classifies fungal versus bacterial keratitis to support faster, more accurate ophthalmic diagnosis.
BCI Based EEG Motor Imagery Classification Using Spectrogram Images and EfficientNet-B0 Network
Indian Patent Office
A brain-computer-interface system that classifies EEG motor-imagery signals from spectrogram images using an EfficientNet-B0 transfer-learning model for neuro-rehabilitation applications.
Journal Publications(2)
Enhanced EMG-based Gesture Recognition using Hybrid CNN-BiLSTM Architecture with Channel Attention
Biomedical and Pharmacology Journal · 2025
Crack Characterisation in Buildings Utilizing Deep Learning Techniques
Conference Papers(2)
Neural-Muscular Coupling Analysis for Upper Limb Gesture Classification: A Multimodal EEG-EMG Fusion Framework
International Conference on Emerging Systems and Intelligent Computing · 2026
Enhanced Bilateral EMG Classification Through Integration of Graph Convolution, Transformer, and BiGRU Networks
International Conference on Emerging Trends in Industry 4.0 · 2025
Honors & awards(2)
Top 3 — National Capture The Flag (CTF), CompTIA
Division of Data Science & Cybersecurity × CompTIATop three finish in a national CTF competition, awarded a ₹75,000 voucher toward the CompTIA Security+ (SY0-701) certification.
Winner — Thales GenTech India Hackathon
₹75,000 awardBuilt an AI-powered terminal that assists security professionals in analysing and remediating vulnerabilities.
Certifications(3)
Speaking & teaching(4)
Cybersecurity educator — 40+ sessions
Delivered more than forty sessions on ethical hacking and applied security, mentoring engineers and students in security practice and tooling.
Invited speaker — Staff Enrichment Program
Karunya Institute of Technology and SciencesDelivered “How to Protect Ourselves from Cyber Attacks” within the programme “Enhancing Teaching Competencies for Transformative Education.”
CTF challenge director — Mindkraft ’22, ’23 and ’25
Directed Capture The Flag events across three editions, leading challenge design and technical coordination.
Led a 350-student security programme
Cyber Security Club (CIRA) · 2024–2025Ran the department's security programme — curriculum, sessions and operations for a cohort of over 350.
Work directly with the people who do the work.
A 20-minute call. You get a written scope and a fixed price — and an honest answer if we're not the right people for it.