Ahsan Ali K.

Full Stack SaaS Developer with 10+ years of experience building production web and mobile applications with Laravel, Vue.js, React, Next.js, and React Native. I've shipped 25+ SaaS products end to end, from Figma design to backend architecture, Stripe billing, and deployment, including real AI, LLM, and RAG features built on OpenAI and Claude. WHAT I BUILD - SaaS platforms: authentication, teams, roles, subscriptions, and admin dashboards - Payment systems with Stripe, Stripe Connect, and Laravel Cashier (billing, payouts, marketplaces) - AI-powered features: RAG chatbots, LLM integrations, AI agents, and tool-calling workflows - Cross-platform iOS and Android apps with React Native and Expo - REST APIs, third-party integrations, real-time features, and background job systems - Pixel-accurate Figma-to-code front ends in Vue, React, Next.js, and Tailwind CSS PRODUCTION AI, LLM & RAG EXPERIENCE I build AI features that hold up in production, not demo-only API wrappers: - Built a complete RAG pipeline solo: ingestion, chunking, OpenAI embeddings, vector database, retrieval, prompt assembly, guardrails, and the chat UI, grounding Claude's answers in real site content with source citations. - Solved a real retrieval failure where vector search missed short queries (e.g., a country name) by adding hybrid search that boosts exact keyword matches on top of semantic search. - Designed retrieval behind a swappable interface (semantic, full-text, or none) to avoid vendor lock-in, with graceful fallback when an AI provider goes down. - Used Claude's forced tool calling to convert unstructured emails into clean structured data, and built a multi-turn tool-calling assistant that queries real data through defined tools instead of raw SQL. - Completed Google's full OAuth verification for a restricted Gmail API scope, beyond standard OAuth setup. TECH STACK Front End: Vue.js, Nuxt.js, React, Next.js, TypeScript, Alpine.js, Tailwind CSS, JavaScript (ES6+), HTML5, CSS3 Back End: Laravel, PHP, Inertia.js, Livewire, Filament, REST APIs, MySQL, PostgreSQL, Redis, queues, WebSockets Payments: Stripe, Stripe Connect, Laravel Cashier Mobile: React Native, Expo (iOS and Android) AI: OpenAI API, Anthropic Claude API, Google Gemini, RAG, vector databases, embeddings, MCP, AI agents DevOps and Workflow: Git, GitHub, CI/CD pipelines, Agile, API-first development HOW I WORK I use AI tools such as Claude and Cursor daily, connected via MCP to GitHub and Figma, to speed up code reviews and design-to-code delivery. I learned to build software before these tools existed, so every line is reviewed, tested, and QA'd by me before it ships. You get faster delivery without the quality risks of unchecked AI-generated code. WHY CLIENTS WORK WITH ME - Design-to-code precision: what ships matches the Figma design, fully wired to real APIs and data. - Production-grade engineering: fallback behavior, deduplication, error handling, and graceful degradation built in from day one. - Senior-level mentorship: I've spent years working alongside a US-based developer with 30+ years of industry experience, which shaped how I architect, document, and deliver. - Clear communication: a business background and prior work as a tour guide mean I explain technical decisions in plain language and keep you updated without jargon. - Flexible engagement: I can own a project independently or integrate smoothly into your existing team. If you need a full stack developer who can build your SaaS product, add reliable AI features, or rescue an existing Laravel, Vue, or React codebase, send me a message with your project details. I'll reply with clear next steps and an honest assessment of scope and timeline.