Dimas Ahmad R.

I am a Senior Fullstack Developer specializing in Laravel, SaaS, RAG & LLM systems, AI chatbots, and automation. As a Senior Fullstack engineer, most of my work over the past decade has centered on Laravel backends powering production systems, and in recent years my focus has shifted toward embedding RAG & LLM capabilities directly into real products, AI chatbots and automation that replace manual work, not just demos. What I build as a Senior Fullstack developer: ▪ Laravel backend architecture: scalable, maintainable SaaS systems built to run in production for years, not just launch day. Every Laravel codebase I touch is structured so the next Senior developer can read it without a handover call. ▪ RAG & LLM systems: RAG retrieval pipelines, vector search, and context-aware LLM features grounded in real data, wired into Laravel or Node.js backends by a Fullstack engineer who has shipped them to production. ▪ AI chatbots and automation: conversational AI chatbot interfaces and n8n automation pipelines that replace manual workflows with reliable, production-grade automation. As a Senior Fullstack developer I own the whole pipeline, not just the prompt. ▪ Laravel, Node.js, and Python backend engineering: as a Fullstack developer I keep the whole stack coherent, from schema design to deployment, including RAG, LLM, and automation service layers. ▪ API integrations: LLM APIs like OpenAI and Claude, plus Stripe and third-party APIs, wired into live Laravel platforms and automation workflows without downtime. ▪ Legacy system stabilization: refactoring inherited Laravel and PHP codebases without breaking what is already live, the kind of work that needs a Senior pair of hands rather than a rewrite. Recent work as a Senior Fullstack developer: ▪ Built an AI-powered recruitment SaaS solo, from CV screening automation and RAG-based matching with LLM scoring through OpenAI integration to Stripe billing, deployed and running end to end. ▪ Built production n8n automation pipelines and AI chatbot workflows that handle real operational tasks, not proof-of-concept demos, built and monitored by a Senior Fullstack engineer. ▪ Stabilized and refactored an enterprise Laravel SaaS platform for a hair salon chain across ~200 core components and 400+ database schema changes, a Senior Fullstack rescue rather than a greenfield build. ▪ Developed a real-time wearable tracking platform with high-frequency data sync and role-based admin access, delivered as a Senior Fullstack engineer owning both the Laravel API and the client app. Core skills I bring as a Senior Fullstack engineer: Python, Flask, FastAPI, Laravel, PHP, Node.js, NestJS, TypeScript, React, Next.js, OpenAI API, Claude API, LLM Integration, RAG, AI Chatbots, Automation, n8n, PostgreSQL, MySQL, Supabase, Redis, Stripe, REST APIs, Docker, AWS, CI/CD. How I work: you get a clear breakdown, timeline, and cost estimate upfront. As a Senior Fullstack engineer I handle development, testing, deployment, and architecture end to end on every Laravel, RAG & LLM project I take on. Before anything ships, I make sure the system, including its automation, is fully tested and genuinely production-ready, which is the difference between a Senior Fullstack developer and a contractor who disappears at launch. I am open to fixed-scope projects, hourly engagements, and long-term retainers. Talk to me if you need a Senior Fullstack engineer who can build RAG & LLM pipelines, AI chatbots, or automation into a system that has to work in production. As a Senior Fullstack specialist working in Laravel every day, I am ready to help you ship RAG, AI chatbots and automation that actually hold up at scale.