Hello, i'm
Saifullah
Full-Stack Developer
I build and ship SaaS platforms, mobile apps, AI chatbots, and complex integrations — from idea to production, solo.
I build products that people actually use
I'm Saifullah — a full-stack developer who ships entire products solo. I've launched my own SaaS platforms (Pairfon, Agentrixo), built native mobile apps, and delivered complete systems for 30+ clients across multiple industries.
My stack spans React, Next.js, Node.js, Kotlin, Python, and everything in between. I don't just code — I architect, design, deploy, and iterate until the product works.
const dev = {
name: "Saifullah",
role: "Full-Stack Developer",
stack: "React · Node · Kotlin · Python",
ownProducts: 3,
clients: 30,
available: true,
}
Services.
SaaS Development
Multi-tenant platforms with auth, billing, dashboards, real-time features, and AI integrations.
Mobile Apps
Native Android with Kotlin, Jetpack Compose, Room DB, background services, and push notifications.
AI & Chatbots
Conversational AI, calling bots, and lead qualification across web, WhatsApp, phone, and GHL.
Integrations & APIs
GoHighLevel, Stripe, Twilio, Zapier, Make.com, Safepay, OAuth 2.0, webhooks, and REST APIs.
Web Applications
Full-stack apps with React, Next.js, TypeScript, Tailwind — responsive, fast, and production-ready.
Backend & Databases
Node.js, Express, Python, FastAPI with PostgreSQL, MongoDB, Redis — scalable APIs and data layers.
Automation & Scraping
Data pipelines, Playwright scrapers, cron schedulers, CSV processing, and workflow automations.
DevOps & Deployment
Docker, AWS, Vercel, CI/CD, Turborepo, Nginx — reliable infrastructure and zero-downtime deploys.
Payment Systems
Stripe subscriptions, Safepay checkouts, invoicing, webhooks, and end-to-end billing flows.
PDF & Documents
Programmatic PDF creation, IRS form filling, bulk generation, digital signatures, and report builders.
Selected Work
Featured Projects.
14 projects across SaaS, AI, mobile apps, and third-party integrations.
Pairfon
Cloud SMS Relay Platform
Turn your Android phone into a cloud SMS gateway — no virtual numbers, no per-message fees. Send and receive texts from a web dashboard, CRM, or automation tool using your real SIM card.
Agentrixo
Real Estate Agency Intelligence Platform
All-in-one SaaS for real estate agencies — automates commissions with flat/percent/tiered splits, tracks lead response times with SLA alerts, compares offers side-by-side on shareable links, ranks agents on a live leaderboard, screens tenants with AI risk scoring (0-100), and nurtures post-close referrals automatically.
BP CareLog
Smart Blood Pressure Tracker
Android app for monitoring blood pressure with intelligent reminders, ML trend analysis, sleep-aware notifications, and PDF report export. Supports Adult and Pregnant user profiles with different health thresholds.
Singles in Tampa
In-Person Speed Dating Platform
Full platform for curated in-person speed dating events in Tampa Bay — event creation, age-segmented ticketing, gender-balanced registration, and private mutual matching.
OpenClaw
AI Assistant Platform
Intelligent AI assistant built to handle complex conversations, provide contextual help, and automate tasks. Integrates with multiple AI providers for natural language understanding and response generation.
GHL Marketplace Apps
GoHighLevel Integrations & Tools
Suite of GoHighLevel marketplace applications — OAuth handler, bulk product sync, token management, and white-label support. Built for agencies to extend their GHL setup with custom automations and data flows.
AI Chatbots & Calling Bots
Multi-Platform Conversational AI
Built chatbots and AI-powered calling bots across every major platform — website widgets, WhatsApp, Facebook Messenger, GHL, and phone systems. Handles lead qualification, appointment booking, and customer support autonomously.
Data Driver
Data Ingestion & Processing Engine
Automated data pipeline that handles CSV uploads, parsing, transformation, and syncing to Supabase. Includes a Playwright-powered bot for real-time data monitoring, cron-based scheduling for recurring imports, and a REST API for manual triggers.
GHL Video Creator
AI Changelog-to-Shorts Pipeline
Python automation that converts GoHighLevel changelog updates into ready-to-publish YouTube Shorts — scrapes content, generates scripts via OpenRouter LLMs, synthesizes voiceover with Speechma, and assembles the final video.
Tight Club
Booking & Product Management System
Backend system for managing bookings and product inventory — Express API for appointment scheduling plus a CSV-driven bulk product creation pipeline for rapid catalog setup.
Solar Tax Pros
Automated IRS PDF Forms Engine
Backend system that programmatically generates, fills, and processes IRS tax forms as PDFs for solar energy credits. Handles form validation, field mapping, calculation logic, and bulk PDF generation for tax professionals.
Safepay QuickPay
Payment Integration Form
Secure checkout form built with Express and Safepay integration — handles payment token creation, transaction processing, and callback verification for seamless online payments.
iMessage API
Programmable iMessage & SMS Gateway
REST API that turns any Mac into a programmable iMessage/SMS gateway. Send and receive messages programmatically with delivery tracking, webhook notifications, and a built-in management dashboard.
FaceTime Call API
Make FaceTime Calls From Your Browser
REST API that lets you initiate and control FaceTime calls directly from a browser. Features real-time two-way audio and video streaming, call status tracking, and a built-in web dialer interface.
Technologies
Tech I work with.
React
Next.js
TypeScript
Node.js
Express
Python
Kotlin
Jetpack Compose
PostgreSQL
MongoDB
Redis
Supabase
FastAPI
Docker
AWSReactNext.jsTypeScriptNode.jsExpressPythonKotlinJetpack ComposePostgreSQLMongoDBRedisSupabaseFastAPIDockerAWS
Stripe📈GoHighLevel
OpenAI
Twilio
Firebase
Zapier🔗Make.com
Tailwind CSS
GSAP
Three.js
GraphQL🔌REST APIs🔐OAuth 2.0🔄WebSockets
PlaywrightStripe📈GoHighLevelOpenAITwilioFirebaseZapier🔗Make.comTailwind CSSGSAPThree.jsGraphQL🔌REST APIs🔐OAuth 2.0🔄WebSocketsPlaywrightClient Feedback.
“Saifullah handled everything we threw at him — chatbots, calling bots, GHL marketplace apps, data pipelines, audience tools. He doesn't just build features, he builds entire systems that run our operations. Incredibly fast and reliable.”
“We needed a way to automate IRS form generation at scale and Saifullah delivered. The PDF engine he built handles form validation, field mapping, and bulk generation flawlessly. He also built our video automation pipeline — the man ships fast.”
Have a project in mind?
I'm always open to new opportunities. Whether you need a full product built or a specific problem solved — let's talk.
Send Message