Ronu P.

Senior Full Stack Developer: Next.js, React, TypeScript, Node.js, Python. Top Rated Plus, 100% Job Success, 8,300+ Upwork hours, $160K+ earned building SaaS products end to end. Full-stack owner on Nudgify, a social-proof SaaS serving 10M+ requests/day on a 3.5-year live contract. Led the team on a governed multi-model AI platform on Python FastAPI and Next.js. ✅ 10+ years, 50+ production builds, frontend to backend ownership ✅ Next.js and React apps scaled to 50K+ live users ✅ Node.js and Laravel backends running PostgreSQL at 7B+ rows in production ✅ AI platforms: OpenAI, Claude, Gemini and Perplexity on Python FastAPI, agents and tool calling in production ✅ Available full-time now (40 hrs/week) for long-term work. Click Invite and I'll reply within hour. 👊 WHAT YOU GET ✓ End-to-end ownership: 50+ SaaS, ecommerce, CRM, ERP, payments, and lead automation builds shipped from spec to production. ✓ Frontend: React, Next.js, TypeScript, Tailwind CSS, Vue, Nuxt. Dashboards, marketplaces, responsive UI. ✓ Backend: Python, FastAPI, Node.js, NestJS, Express, Laravel. REST API, GraphQL, webhooks, queues (BullMQ, Horizon), real-time (Socket IO), Stripe Connect, multi-tenant auth with row-level security (RLS). ✓ AI features: OpenAI, Anthropic Claude, Gemini chatbots, document Q&A, embeddings and vector search (pgvector), multi-model chat, agent and tool-calling workflows. ✓ Database and infra: PostgreSQL, Supabase, MySQL, MongoDB, Redis, ClickHouse. AWS, Azure, DigitalOcean, GCP, Docker. 🔥 ACHIEVEMENTS ✓ 8,300+ Upwork hours, 100% Job Success, 5-star reviews across the board. ✓ Scale: maintained 10M+ daily requests and 7B+ PostgreSQL rows on Nudgify as core full-stack owner for 3.5 years. ✓ Cloud cost: cut DigitalOcean infra from $1,600 to $700/month with zero downtime; cut an AWS SQS bill from $600 to $200 in 3 days. ✓ Integrations: engineered 180+ high-reliability smart-webhook connectors for live SaaS infrastructure. ✓ Ecommerce: built and launched a live Shopify App Store app with AI-powered search and SEO. ✓ AI platform: team lead, multi-model AI with 180+ business-tool connections, scoped access and per-user audit. ✓ Product analytics: built Workever's PostHog setup end to end: tracking plan, web and mobile instrumentation, 12 growth dashboards on trial activation, conversion and retention. ✓ Pre-freelance: 2 years on a high-traffic SaaS used by 5M+ users and 10,000+ businesses. 🚚 WHERE I DELIVER ✓ SaaS platforms: multi-tenant with row-level security, Stripe billing, admin dashboards, real-time, webhooks. 25+ shipped. ✓ Ecommerce and Shopify: Shopify Remix apps, GraphQL Admin API, Stripe checkout, marketplace flows. ✓ Creator economy: subscriptions, paid memberships, live streaming, Stripe Connect payouts. ✓ AI products: multi-model AI platforms, agents and tool calling, chatbots, document Q&A. ✓ Product analytics: PostHog tracking plans, funnels, cohorts, retention, trial health and attribution dashboards. ✓ CRM, ERP, and custom workflows: leads, deals, inventory, HR, payroll, accounting. Salesforce, Zoho, WhatsApp Cloud API, SendGrid. ✓ Database scaling and cloud cost cuts: PostgreSQL tuning, query optimization, infra audits. ✓ Fractional engineering and technical coaching: architecture reviews, PR-level code review, reliability standards (Sentry, runbooks), AI-assisted dev workflows (Claude Code, Cursor) for founders and small teams. 🛠️ HOW I BUILD ✓ Frontend: React, Next.js, Redux, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Vue, Nuxt, responsive design. ✓ Backend: Python, FastAPI, Node.js, NestJS, Express, Laravel, PHP, REST API, GraphQL, WebSockets, BullMQ, Horizon. ✓ Database: PostgreSQL, Supabase (row-level security / RLS policies), MySQL, MongoDB, Redis, ClickHouse, Elasticsearch, Prisma, pgvector. ✓ Cloud and DevOps: AWS (EC2, S3, Lambda, IVS, MediaConvert, SES, SQS, CloudFront), Azure (App Service, Key Vault), DigitalOcean, GCP, Vercel, Docker, GitHub Actions. ✓ AI: OpenAI, Anthropic Claude, Gemini, Perplexity, Merge.dev, LangChain, embeddings, vector search. ✓ Analytics: PostHog (product analytics, session replay, group analytics). ✓ Payments: Stripe (Connect, Subscriptions, Checkout), PayPal, Razorpay. ✓ AI-augmented workflow: Cursor Pro and Claude Code (Max plan) in daily flow, senior review on every line. ⚡ HOW I WORK Product-owner mindset. Scoping upfront, picking the right stack not the trendy one, flagging issues before they become bills. First reply within 4 hours on weekdays. Estimates before I start. Code review before delivery. IST hours with strong overlap for UK, EU, UAE, Singapore, and late US Eastern. Best fit: SaaS builds, Next.js full stack, Python FastAPI AI backends, PostHog product analytics, Stripe billing and Connect payouts, scaling and infra cost work, OpenAI and Anthropic integration, Shopify apps, CRM/ERP. ✉ Send your project details. I'll reply with a plan and timeline within a day.