Karthikeyan T
Senior AI Engineer | LLM Engineer | SaaS Architect
I build production-grade AI and SaaS systems with 20+ years of engineering experience. From LLM-powered RAG pipelines and autonomous agents to multi-tenant platforms, I ship things that work at scale — with clean architecture, real security, and zero fluff.
Projects & Portfolio
Production applications, AI tools, SaaS platforms, and practical experiments built around real problems.
44 projects
Featured Builds
A quick signal of the strongest AI, SaaS, and security work.
SigmaSec - Posture Intelligence Security
Unified scanning, real exploitability intelligence, and AI-authored remediation for teams tired of triaging noise.
Supercharge Your AI Coding Agent -SKILLS
Drop-in SKILL.md files that give your AI agent specialised, consistent behaviour — instantly.
AI & LLM Applications
15 projects
CogniScale
CogniScale was built to replace rigid, one-size-fits-all testing with a dynamic, mathematically rigorous, and ethically grounded assessment and remediation platform
RAG System for Your Documents
Ask questions and retrieve insights from your own documents using a Retrieval-Augmented Generation system.
LibraDigitAI
comprehensive architectural overview of LibraDigit AI: engineered to empower libraries, museums, academic research facilities, and government registries with air-gapped OCR accuracy, standard cataloging, and permanent archival search.
Project tracker
Multi-tenant Security Posture Intelligence Platformthat unifies vulnerability, SCA, container, and secret scanning with AI remediation guidance.
ModelMeter: AI FinOps & Observability
Provider-agnostic AI FinOps platform for monitoring LLM usage, costs, performance, and reliability.
SigmaSec - Posture Intelligence Security
Unified scanning, real exploitability intelligence, and AI-authored remediation for teams tired of triaging noise.
Web Security Scanner
A lightweight web security scanner for quick vulnerability and configuration checks.
ActSMS
On-device assistant that converts transactional SMS messages into reminders, tasks, and alerts.
SolarFlow
Track solar projects from lead to payment, customer updates, and collection follow-ups in one workflow.
PaperPublish IQ
Research workflow platform that guides drafts toward publication with mentoring and blind peer review.
WingzAI Platform
Unified workspace to manage connectors, build AI agents, and automate security, compliance, and service workflows.
Cybersecurity Workshop
AI-assisted cybersecurity workshop site for hands-on training, security learning paths, and practical labs.
Kapan
Private, internal communication platform built for teams that value control and privacy.
CodeShield Local
Local AI-powered code security auditor that scans, explains, and helps fix vulnerabilities without sending code to the cloud.
Hyperlocal Heat Intelligence Platform
The heat early-warning layer for the world's hottest, most crowded cities. 48-hour, 100m street-level thermal stress forecasting for insurers, employers, and city responders.
Websites
14 projects
FIT BITE
Premium-quality fresh exports with reliable sourcing and global distribution.
NEXMANCER HELIOS
Experience the evolution of solid fuel cooking with the NEXMANCER Helios. Engineered with active BLDC forced-draft aerodynamics, preheated secondary gasification, and intelligent thermocouple regulation — delivering unprecedented thermal efficiency and virtually smokeless combustion
FIT BITE CART
Your next good habit starts with a bite.
Royal Albatross Exports
Premium-quality fresh exports with reliable sourcing and global distribution.
SN Exports
Karur Cotton Export Manufacturing Company specializing in high-quality cotton products for global markets.
Nesam Radio
Tamil music, devotional programs, news, and podcasts streamed from Tamil Nadu.
DSR Photos & Videos
Professional photography and videography for destination weddings, editorial shoots, and portrait sessions.
Chennai Braiding Company
Specialized manufacturers of high-quality shoe laces and industrial ropes.
Cyber Risk & Investment Platform
Multi-tenant Security Posture Intelligence Platform that unifies vulnerability, SCA, container, and secret scanning with AI remediation guidance.
HIRENCH HR Solutions
Recruitment and HR consulting platform for staffing, executive search, and industry hiring workflows.
Ark Veterinary Clinic
Comprehensive veterinary care with a focus on preventive and clinical services.
Sri Kaliamman Textiles
Textile manufacturer website focused on product presentation, credibility, and inbound enquiries.
30-Day Ethical Hacking Bootcamp
Hands-on ethical hacking training designed to build real-world offensive security skills in 30 days.
IntraChat
Private, internal communication platform built for teams that value control and privacy.
Tools
6 projectsSupercharge Your AI Coding Agent -SKILLS
Drop-in SKILL.md files that give your AI agent specialised, consistent behaviour — instantly.
Gantto Project Timeline
A premium, privacy-first fullscreen Gantt chart and project timeline manager Chrome Extension & Web Application.Effortlessly plan, schedule, and track projects with Natural Language processing, Critical Path analysis, smart templates, and interactive timelines.
ExtractTheme Studio
Extract CSS variables, Tailwind configs, typography, WCAG contrast matrices, font files, logos, and interactive HTML style guides in seconds.
SecuTools.io
Practical, no-nonsense utilities for cybersecurity engineers and security researchers.
AI & LLM Handy Tools
A curated toolbox of practical utilities for AI engineers, researchers, and prompt engineers.
MyTeleprompter
Easy-to-use teleprompter for speakers, presenters, and creators who need smoother delivery.
Chrome Extensions
7 projects
Chrome Web Store Developer Console Extension
Developer-focused Chrome extension published on the Chrome Web Store.
TrustLens - Website Trust & Risk Checker
Instant website trust and risk analysis using real-time domain intelligence.
AI Image Signal Analyzer
Analyzes visual and metadata signals to estimate the probability of AI-generated images.
Gantto - Project Timeline Manager
AI-assisted Gantt chart tool with progress tracking and smart task suggestions.
AppSec Inspector
Local-first application security inspection tool for headers, secrets, and authentication checks.
Auto Formatter Pro
Advanced code formatter with syntax highlighting, format conversion, and diff view for structured data.
Screenshotify
Offline-first Chrome extension for capturing, annotating, blurring, cropping, and zooming screenshots.
Creative Projects
2 projects
Aether - Gestural Focus Engine
Interactive meditation and breathing experience using particle-based visualizations for focus and mindfulness.
Enhanced Audio Visualizer
Cinematic 3D, real-time, beat-reactive visuals that transform music into immersive motion.
Experience
20+ years of engineering excellence across AI, SaaS, and full-stack development
Virtusa
2023 - 2026Lead Consultant / Senior Lead Engineer (AI & Full-Stack)
Buckman
2021 - 2023Senior Digital Innovation Engineer
PushPros
2020 - 2021Senior Full-Stack Developer
AURISS Technologies
2017 - 2020Senior Engineer (AI & Cybersecurity SaaS)
Pacific Controls, Dubai, UAE
2015 - 2016UI/Web Developer (IoT Platforms)
Core Competencies
Technical expertise across the full stack of modern software development
AI & LLM Engineering
- Ollama + Qwen3 / Llama models integration
- RAG pipelines with LangChain, ChromaDB, Faiss, pgVector
- AI agents for workflow automation and penetration testing
- Secure prompt pipelines, autonomous agent chaining
SaaS Architecture
- Multi-tenant architecture (isolation, RBAC, API gateway)
- Next.js, .NET Core, Node.js, PostgreSQL systems design
- Serverless functions, edge APIs, observability, tracing
Full-Stack Engineering
- Next.js, React, Angular, Node.js, .NET Core
- Prisma ORM, PostgreSQL schema optimization
- REST/GraphQL secure API development
AI Ecosystem
- APIs: OpenAI, Claude, Cohere, Hugging Face, Together.ai
- Libraries: LangChain, LlamaIndex, Transformers
Cloud & DevOps
- CI/CD: GitHub Actions, Azure DevOps
- Docker deployments on Vercel, Azure, AWS
UI/UX
- Figma, Tailwind, design systems, accessibility
Get In Touch
Interested in collaborating? Let's discuss how we can work together.
Contact Information
Open Source Activity
Karthikeyan T
Senior AI Engineer | LLM Engineer | SaaS Architect
I build production-grade AI and SaaS systems with 20+ years of engineering experience. From LLM-powered RAG pipelines and autonomous agents to multi-tenant platforms, I ship things that work at scale — with clean architecture, real security, and zero fluff.
Projects & Portfolio
Production applications, AI tools, SaaS platforms, and practical experiments built around real problems.
44 projects
Featured Builds
A quick signal of the strongest AI, SaaS, and security work.
SigmaSec - Posture Intelligence Security
Unified scanning, real exploitability intelligence, and AI-authored remediation for teams tired of triaging noise.
Supercharge Your AI Coding Agent -SKILLS
Drop-in SKILL.md files that give your AI agent specialised, consistent behaviour — instantly.
AI & LLM Applications
15 projectsCogniScale
CogniScale was built to replace rigid, one-size-fits-all testing with a dynamic, mathematically rigorous, and ethically grounded assessment and remediation platform
RAG System for Your Documents
Ask questions and retrieve insights from your own documents using a Retrieval-Augmented Generation system.
LibraDigitAI
comprehensive architectural overview of LibraDigit AI: engineered to empower libraries, museums, academic research facilities, and government registries with air-gapped OCR accuracy, standard cataloging, and permanent archival search.
Project tracker
Multi-tenant Security Posture Intelligence Platformthat unifies vulnerability, SCA, container, and secret scanning with AI remediation guidance.
ModelMeter: AI FinOps & Observability
Provider-agnostic AI FinOps platform for monitoring LLM usage, costs, performance, and reliability.
SigmaSec - Posture Intelligence Security
Unified scanning, real exploitability intelligence, and AI-authored remediation for teams tired of triaging noise.
Web Security Scanner
A lightweight web security scanner for quick vulnerability and configuration checks.
ActSMS
On-device assistant that converts transactional SMS messages into reminders, tasks, and alerts.
SolarFlow
Track solar projects from lead to payment, customer updates, and collection follow-ups in one workflow.
PaperPublish IQ
Research workflow platform that guides drafts toward publication with mentoring and blind peer review.
WingzAI Platform
Unified workspace to manage connectors, build AI agents, and automate security, compliance, and service workflows.
Cybersecurity Workshop
AI-assisted cybersecurity workshop site for hands-on training, security learning paths, and practical labs.
Kapan
Private, internal communication platform built for teams that value control and privacy.
CodeShield Local
Local AI-powered code security auditor that scans, explains, and helps fix vulnerabilities without sending code to the cloud.
Hyperlocal Heat Intelligence Platform
The heat early-warning layer for the world's hottest, most crowded cities. 48-hour, 100m street-level thermal stress forecasting for insurers, employers, and city responders.
Websites
14 projectsFIT BITE
Premium-quality fresh exports with reliable sourcing and global distribution.
NEXMANCER HELIOS
Experience the evolution of solid fuel cooking with the NEXMANCER Helios. Engineered with active BLDC forced-draft aerodynamics, preheated secondary gasification, and intelligent thermocouple regulation — delivering unprecedented thermal efficiency and virtually smokeless combustion
FIT BITE CART
Your next good habit starts with a bite.
Royal Albatross Exports
Premium-quality fresh exports with reliable sourcing and global distribution.
SN Exports
Karur Cotton Export Manufacturing Company specializing in high-quality cotton products for global markets.
Nesam Radio
Tamil music, devotional programs, news, and podcasts streamed from Tamil Nadu.
DSR Photos & Videos
Professional photography and videography for destination weddings, editorial shoots, and portrait sessions.
Chennai Braiding Company
Specialized manufacturers of high-quality shoe laces and industrial ropes.
Cyber Risk & Investment Platform
Multi-tenant Security Posture Intelligence Platform that unifies vulnerability, SCA, container, and secret scanning with AI remediation guidance.
HIRENCH HR Solutions
Recruitment and HR consulting platform for staffing, executive search, and industry hiring workflows.
Ark Veterinary Clinic
Comprehensive veterinary care with a focus on preventive and clinical services.
Sri Kaliamman Textiles
Textile manufacturer website focused on product presentation, credibility, and inbound enquiries.
30-Day Ethical Hacking Bootcamp
Hands-on ethical hacking training designed to build real-world offensive security skills in 30 days.
IntraChat
Private, internal communication platform built for teams that value control and privacy.
Tools
6 projectsSupercharge Your AI Coding Agent -SKILLS
Drop-in SKILL.md files that give your AI agent specialised, consistent behaviour — instantly.
Gantto Project Timeline
A premium, privacy-first fullscreen Gantt chart and project timeline manager Chrome Extension & Web Application.Effortlessly plan, schedule, and track projects with Natural Language processing, Critical Path analysis, smart templates, and interactive timelines.
ExtractTheme Studio
Extract CSS variables, Tailwind configs, typography, WCAG contrast matrices, font files, logos, and interactive HTML style guides in seconds.
SecuTools.io
Practical, no-nonsense utilities for cybersecurity engineers and security researchers.
AI & LLM Handy Tools
A curated toolbox of practical utilities for AI engineers, researchers, and prompt engineers.
MyTeleprompter
Easy-to-use teleprompter for speakers, presenters, and creators who need smoother delivery.
Chrome Extensions
7 projectsChrome Web Store Developer Console Extension
Developer-focused Chrome extension published on the Chrome Web Store.
TrustLens - Website Trust & Risk Checker
Instant website trust and risk analysis using real-time domain intelligence.
AI Image Signal Analyzer
Analyzes visual and metadata signals to estimate the probability of AI-generated images.
Gantto - Project Timeline Manager
AI-assisted Gantt chart tool with progress tracking and smart task suggestions.
AppSec Inspector
Local-first application security inspection tool for headers, secrets, and authentication checks.
Auto Formatter Pro
Advanced code formatter with syntax highlighting, format conversion, and diff view for structured data.
Screenshotify
Offline-first Chrome extension for capturing, annotating, blurring, cropping, and zooming screenshots.
Creative Projects
2 projectsAether - Gestural Focus Engine
Interactive meditation and breathing experience using particle-based visualizations for focus and mindfulness.
Enhanced Audio Visualizer
Cinematic 3D, real-time, beat-reactive visuals that transform music into immersive motion.
Experience
20+ years of engineering excellence across AI, SaaS, and full-stack development
Virtusa
2023 - 2026Lead Consultant / Senior Lead Engineer (AI & Full-Stack)
Buckman
2021 - 2023Senior Digital Innovation Engineer
PushPros
2020 - 2021Senior Full-Stack Developer
AURISS Technologies
2017 - 2020Senior Engineer (AI & Cybersecurity SaaS)
Pacific Controls, Dubai, UAE
2015 - 2016UI/Web Developer (IoT Platforms)
Core Competencies
Technical expertise across the full stack of modern software development
AI & LLM Engineering
- Ollama + Qwen3 / Llama models integration
- RAG pipelines with LangChain, ChromaDB, Faiss, pgVector
- AI agents for workflow automation and penetration testing
- Secure prompt pipelines, autonomous agent chaining
SaaS Architecture
- Multi-tenant architecture (isolation, RBAC, API gateway)
- Next.js, .NET Core, Node.js, PostgreSQL systems design
- Serverless functions, edge APIs, observability, tracing
Full-Stack Engineering
- Next.js, React, Angular, Node.js, .NET Core
- Prisma ORM, PostgreSQL schema optimization
- REST/GraphQL secure API development
AI Ecosystem
- APIs: OpenAI, Claude, Cohere, Hugging Face, Together.ai
- Libraries: LangChain, LlamaIndex, Transformers
Cloud & DevOps
- CI/CD: GitHub Actions, Azure DevOps
- Docker deployments on Vercel, Azure, AWS
UI/UX
- Figma, Tailwind, design systems, accessibility
Get In Touch
Interested in collaborating? Let's discuss how we can work together.