Javed B.

I’m a senior full-stack engineer with over a decade of experience building AI-powered and creative SaaS platforms: AI agents and automations, generative AI tools for images and video, browser-based design editors, and 3D product configurators that real teams and customers use every day. I handle the full stack: the LLM and API layer, the canvas or 3D frontend, and the backend, billing and integrations behind them. I care most about what makes a product dependable in production: validating bad inputs, recovering from failed or slow API calls, preventing duplicate charges and events, logging every action, and testing properly before handover. AI agents, LLM integration and automation AI agent development with OpenAI (GPT) and Anthropic (Claude) APIs, function calling and tool use Agents that connect to business tools through REST and GraphQL APIs: CRMs, Shopify, Stripe, email, Slack and internal systems Multi-step workflows with human-in-the-loop approval, retries, job queues and audit logs AI chatbots and assistants trained on company knowledge RAG pipelines: document ingestion (PDF, Word, web pages), chunking, embeddings, vector search and per-customer data isolation LLM evaluation suites that measure answer quality before changes ship MCP servers, prompt engineering, structured output and cost and credit metering Generative AI for images and video AI ad generators that turn brand guidelines and reference ads into finished creatives AI video generation: text-to-video, image-to-video, script-to-shot breakdown and shot-by-shot rendering AI image editing: text-to-image, inpainting, generative fill, object removal, background removal and replacement, upscaling, relighting, outpainting and style transfer Integrations with fal, Replicate and other model providers, with pricing quoted before each job Design editors and creative tools Canva-style online design editors, photo editors and browser video editors with timelines, layers, text, shapes, uploads and export Custom product designers and web-to-print tools: t-shirt and apparel designers, sign and monument designers, print-ready PDF and SVG export Logo makers, mockup generators, whiteboards and interactive HTML5 activities High-performance canvas rendering with Pixi.js, Fabric.js, Konva.js, p5.js and WebGL 3D configurators and ecommerce 3D and 2D product configurators with Three.js and Babylon.js: real-time materials, colours, parts and pricing AR view and GLB export Shopify app development, WooCommerce, Wix and BigCommerce integrations Ecommerce automation, order and billing webhooks, and reconciliation against Stripe and Shopify SaaS development Multi-tenant SaaS from MVP to production: auth, teams, roles, subscriptions, credit billing, admin dashboards and back-offices Idempotent webhooks, background workers, queues and scheduled jobs Cloud deployment, file storage and CI/CD Skills AI: OpenAI API, Anthropic Claude API, AI agents, LLM integration, generative AI, RAG, embeddings, vector databases, MongoDB Atlas Vector Search, prompt engineering, MCP, fal, Replicate Graphics: WebGL, Canvas API, Pixi.js, Three.js, Babylon.js, Fabric.js, Konva.js, p5.js, SVG Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS, Redux Backend: Node.js, Express, NestJS, AdonisJS, Koa, REST API, GraphQL, webhooks Data and queues: PostgreSQL, Supabase, MongoDB, MySQL, Redis, DynamoDB, BullMQ, Drizzle, TypeORM Cloud: AWS (Lambda, S3), Cloudflare R2, Railway, Fly, CI/CD Payments: Stripe, Paddle, PayPal, Apple Pay, Google Pay, Shopify Billing Testing: Vitest, automated integration tests against real databases If you’re building an AI agent, an AI image or video tool, a design editor, a 3D configurator or a SaaS product and need it to work reliably in production, let’s talk.