kartik nayak
@kartiknayak
Full-stack developer building AI-integrated automation and SaaS products with MERN and LLMs.
IndiaWhat I'm looking for
I build production-ready full-stack systems that connect automation with real business workflows. In my current role, I’ve created browser automation using Playwright and Puppeteer for enterprise processes, including bot-detection bypasses through proxy rotation and fingerprint spoofing.
I also integrate LLMs into end-to-end pipelines, bringing GPT-4o, Grok, and Gemini into web scraping, content extraction, AI messaging, and CAPTCHA-solving workflows. I translate these capabilities into user-facing products, including a full-stack Twitter/X Chrome Extension for AI-personalised DM campaigns and engagement automation.
On the SaaS side, I’ve implemented Stripe subscription billing with usage-based metering, webhook handling, and payment flows. Earlier, I shipped a full-stack MERN petrol pump management platform (FuelMatrix) and built AI product experiences like FaceGPT (an Android face search app) and an end-to-end YouTube AI content pipeline.
Experience
Work history, roles, and key accomplishments
Full Stack Automation Developer
Humanity Founders Hub Pvt. Ltd.
Jan 2025 - Present (1 year 5 months)
Built browser automation systems using Playwright and Puppeteer for enterprise workflows and implemented bot-detection bypasses via proxy rotation and fingerprint spoofing. Integrated GPT-4o, Grok, and Gemini APIs for scraping and AI messaging, built a Twitter/X AI DM automation Chrome extension, and implemented Stripe usage-based subscriptions with webhook-driven billing flows.
MERN Stack Developer
LSOYS Games & Apps
Jun 2024 - Oct 2024 (4 months)
Built and shipped FuelMatrix, a full-stack SaaS petrol pump management platform covering payments, inventory, billing, and operations. Developed backend services with Node.js, Express.js, and MongoDB to improve responsiveness and reduce onboarding friction.
Education
Degrees, certifications, and relevant coursework
University of Mumbai
B.E., Artificial Intelligence & Machine Learning
Grade: CGPA: 8.15 / 10
Completed a B.E. in Computer Engineering with a focus on Artificial Intelligence & Machine Learning at the University of Mumbai (completed May 2026).
Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Website
facegpt.aiPortfolio
fuelmatrix.inJob categories
Skills
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