Harit C.

Top rated 100% JSS, 4+ years of experience. Published app on Shopify App store. Shipped/improved 10+ client applications. I've worked with Stripe and Shopify billing, AI-powered SaaS, generative business tools, customer pages, custom CRMs, and marketplace applications. I am a full-stack developer working across React.js/Next.js (TypeScript) and FastAPI/Flask (Python) encompassing APIs, databases, payments, AI functions, and third-party integrations. My recent projects have been AI-powered SaaS products using Next.js, FastAPI, Supabase/PostgreSQL. Why work with me? 1. My own harness can integrate with any CLI tool and work across open-source and frontier models. This helps me create standardized work with consistent standards across different implementations. 2. I focus on writing durable software, known for my 'attention to detail' and rigorous testing methods that can snuff out a production disaster early in the development process. These are some of the systems I have shipped or improved: • Shopify virtual try-on from a shopper's photo. Remix, Flux, PostgreSQL, Prisma, AWS S3/SQS, Flyio. Live on the Shopify App Store with billed usage, identity/garment quality checks, and GDPR deletion. • Voice and chat receptionist. Next.js, LiveKit, OpenAI, Deepgram, Redis, PostgreSQL, Cal. FAQ-first RAG, confirmed calendar booking, Docker/Fly deploy. • Web/WhatsApp assistant over mail, calendar, Asana, Trello, and Notion. React, Supabase, Anthropic/OpenAI tool calls, Composio, QStash, Twilio. Model proposes actions; server owns tenant, confirmation, and writes. • Internal native-ad generation and review. Next.js, Trigger.dev, Gemini, GPT scoring, SerpAPI, Supabase, Sharp. Multi-candidate images, quality gates, human approve/reject. • PDFs/URLs into a chat room: grounded chat, topics, quizzes. Next.js, LangChain, OpenAI embeddings, Upstash Vector, Groq, QStash, Prisma. Ingestion and quiz jobs run in background workers so the UI does not block. • Sports analytics SaaS: scrape sources, extract lines, consensus. Next.js, OpenAI structured JSON, PostgreSQL, Redis, QStash, Clerk, Stripe, Vercel cron. LLM output is schema-checked and joined to schedules before it is shown. • Bank/credit-union rate pages into a comparable database. FastAPI, Next.js, Anthropic/OpenAI/Gemini extraction, PostgreSQL, QStash, Vercel cron. Current and historical rates are stored. • Multi-tenant CRM plus Retell voice. React, Supabase Auth/RLS, Edge Functions, Apollo, Resend, Cal. Tenant/workspace isolation, deal-won customer flow, outbound sequences, call data into leads. • B2B wholesale storefront. Next.js, React Query, Redux, TypeScript. Removed duplicate login/home/cart/checkout requests, fixed hydration and stale product cache, SSR SEO, fixed mobile responsiveness, improved Lighthouse score. • Production accounting, shipping, and reporting automation. Python, Progress ABL, QAD DB, MySQL, ETL. Cut month-end reporting manual work 50% and cycle time 15 days/month; shipping/intercompany automations cut operational effort up to 80%; 90% ticket resolution; document automation at 100% uptime. Tech Stack Frontend • Next.js • React • TypeScript • Remix Backend • Node.js • Python • FastAPI • Flask Database • PostgreSQL • Supabase • Prisma • Redis • MySQL Integrations • Stripe • Shopify • OpenAI, Anthropic, Gemini, Flux, ElevenLabs, Deepgram, and other AI models • LiveKit, Retell • Google Workspace, Microsoft, Twilio, Cal, Trigger.dev Infrastructure • Vercel • AWS (SQS, S3, Lambda) • Fly • Docker I am a strong fit if your project involves: • Production SaaS with authentication, RBAC, billing, subscriptions, and Supabase/PostgreSQL • AI systems using RAG, LLM workflows, voice agents, image generation, structured extraction, and human-in-the-loop automation • Data pipelines for web scraping, aggregation, ETL, deduplication, synchronization, and structured processing • Connecting Google Workspace, Microsoft, Stripe, Trello, Asana, Notion, Twilio, and Calendar through OAuth and APIs