Freelancers using PHP in PunjabFreelancers using PHP in Punjab
Full-Stack & AI Developer | SaaS & AI Automation
2x
Hired
3
Followers
Full-Stack & AI Developer | SaaS & AI Automation
Lead Full Stack Dev | SaaS, APIs & Scalable Systems
Lead Full Stack Dev | SaaS, APIs & Scalable Systems
API Integration & Web Application Developer
$5k+
Earned
2x
Hired
13
Followers
API Integration & Web Application Developer
Cover image for From ACH to Card Payments:
From ACH to Card Payments: Building Scalable Payment Systems for US Businesses Over the past few years, I’ve worked closely with US-based businesses to design and implement secure, scalable payment systems across ACH, online card payments, and card-present (terminal) environments. My experience spans platforms like North.com (http://North.com), NMI, and other payment APIs—supporting everything from recurring ACH billing to fully integrated in-person payment solutions using physical terminals. On the ACH side, I’ve handled bank account verification, transaction lifecycles, and returns such as NSF and failed debits. ACH systems require careful management of delayed settlements, webhook events, and reconciliation—especially within US financial workflows. For online card payments, I’ve implemented secure gateways, tokenization, and optimized checkout experiences to ensure fast, seamless, and PCI-compliant transactions. I’ve also built and deployed card-present solutions, including: – EMV terminal integrations – Tap, dip, and swipe transaction flows – Device configuration and deployment – Real-time syncing with backend systems – Handling reversals, refunds, and partial approvals A critical part of every integration is compliance and security. My work ensures: – PCI DSS compliance for card data protection – Tokenization (no sensitive data storage) – Secure API authentication and encryption – Reliable webhook handling and audit-ready transaction logs From a technical perspective, I specialize in building robust API integrations, webhook listeners, retry mechanisms, and fail-safe systems that continue to operate reliably under real-world conditions. Key solutions I’ve delivered: – ACH debit and recurring billing systems – Online card payment integrations with secure token flows – Card-present terminal integrations – Real-time transaction systems using webhooks – Payment failure handling and reconciliation logic – CRM and internal dashboard integrations Working in the US payments ecosystem has given me deep exposure to compliance requirements, operational challenges, and the importance of building systems that are both secure and scalable. My focus is simple: build payment systems that are reliable, compliant, and seamless—whether online or in-person. Open to collaborations in fintech, payments, and API integrations.
1
154
Full Stack Engineer & Software Architect for B2B SaaS & AI
5.0
Rating
5
Followers
Full Stack Engineer & Software Architect for B2B SaaS & AI
Senior Full-Stack (RoR, Python, Node, PHP) Developer
5.0
Rating
6
Followers
Senior Full-Stack (RoR, Python, Node, PHP) Developer
Web Designer & Developer | Framer, Webflow & Figma
1x
Hired
16
Followers
Web Designer & Developer | Framer, Webflow & Figma
Cover image for Base44 "Give it a Glow"
Base44 "Give it a Glow" Competition Submission Project: Bake Me Happy — Artisan Bakery Live Customer URL: https://bakehappy.base44.app/ (https://bakehappy.base44.app/)Live Admin URL: https://bakehappy.base44.app/dashboard 1. The Product Overview What it is: A comprehensive, end-to-end artisanal bakery operating system.  💯 Real-World Utility: Most local bakeries rely on messy WhatsApp chats, manual inventory counting, and phone calls for custom cake orders. Bake Me Happy replaces that chaos with a premium storefront and a highly intelligent backend.  💯 Design Quality: The design utilizes a boutique, minimalist aesthetic that matches the high-end nature of the products. It's fully mobile-responsive and feels like a luxury brand experience. 2. The Automation Depth. Customer-Facing Automations (Revenue & CX) 🚀 3D Cake Customizer & Pricing Engine(Hero): Automatically calculates complex pricing tiers in real-time as users customize their cakes (shape, flavor, layers, custom messages). 🚀 AI Cake Concierge (Superagent): A fully implemented web chatbot that asks customers what they are celebrating and suggests specific cakes from the catalog. 🚀 WhatsApp AI Assistant: A 24/7 automated WhatsApp flow that acts as a virtual cashier—answering FAQs, taking custom orders, grabbing delivery details, and automatically syncing the order to the Admin Dashboard. Business-Facing Automations (Time-Saving & Operations): 🚀 Inventory AI(Hero): Automatically tracks ingredient usage based on orders and generates alerts when stock is critical (e.g., < 3 days remaining), saving the owner hours of manual stock-taking. 🚀 Review AI: Automatically aggregates customer reviews and uses sentiment analysis to categorize complaints (Quality, Price, Packaging) and identify "Taste Trends". 🚀 Bakery Co-Pilot: An admin-facing AI assistant that can instantly generate daily business briefings and competitor intelligence reports. 4. The Story The Before:  An Instagram page with 5k followers where custom cake orders were a nightmare of manual DMs, manual price quoting, and guessing when ingredients were running low.  The After: An end-to-end luxury storefront and an AI-powered operating system built entirely on Base44 that the business is actively using today! What I built: 🤖 AI Superagent & WhatsApp Bot: 24/7 automated order taking and customer support. 📊 Competitor AI: Automatically tracks local competitor pricing and generates business insights. 📦 Inventory AI: Automatically calculates ingredient burn rates and alerts the owner before they run out of stock. They are saving hours a week, and their customers get a premium, frictionless experience. https://www.loom.com/share/4df48796f863412e997b5559ffc54818
5
6
275
Full-Stack Developer building fast, scalable web apps.
New to Contra
Full-Stack Developer building fast, scalable web apps.