open_to_roles · Wyckoff, NJ

Nihat Karahan"full-stack engineer"

5+ years shipping full-stack production products — web apps, SaaS platforms, AI-powered tools and browser extensions. I own the whole stack: architecture, AI integration, Stripe billing, cloud deploy. 6+ live products. Real users. Real revenue.

6+
live_products
5+
years_shipping
4
ai_products
core capabilities

What I build

08 domains
01

Web apps & SaaS platforms

Full-stack applications built for scale — from marketing sites to complete SaaS products with dashboards, user management and billing.

next.jsreactnodepostgres
02

AI integration & LLM products

Production AI features on OpenAI and other LLM APIs — chatbots, document analysis, fact-checking, streaming responses. Deployed to real users, not demos.

openairagstreamingprompt-eng
03

Payments & billing

End-to-end monetization with Stripe — subscriptions, webhooks, trials, customer portals.

04

Cloud & DevOps

Vercel, AWS and Azure — CI/CD, edge deployments, serverless functions.

05

Auth & user management

Clerk, Firebase Auth and Supabase — OAuth, role-based access, sessions.

06

Browser extensions

Published Chrome extensions with Manifest V3, paywalls and live user bases.

07

Database & backend architecture

PostgreSQL, Supabase, Neon and Firebase — schema design, API architecture and data modelling for products running in production.

postgressupabaseneonrest
08

UI/UX & frontend engineering

Component systems, accessible interfaces and motion that carries meaning rather than decorating.

tailwindframer-motionfigmawcag
selected work

Shipped products

07 repos · ordered by complexity
publications

Written work

01 document
software engineering · design documentation

Library Information & Administration System

Semih Aksehirli, Nihat Karahan, Mohammed Mostofa
William Paterson University · CS 3500 · Spring 2026

A complete object-oriented design deliverable spanning the software development lifecycle — requirements, six use cases, communication diagrams, nine UML class diagrams and C++ implementation skeletons.

c++umloodsystem-design
read_docs →
status: open_to_new_roles
full-stackai/ml product-engfrontend
contact

Let's build
something()

I'm actively looking for software engineering, AI and product engineering roles. If you're building something good, I'd like to hear about it.