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𝗪𝗵𝘆 𝗵𝗶𝗿𝗲 𝗺𝗼𝗿𝗲 𝘄𝗵𝗲𝗻 𝗔𝗜 𝗰𝗮𝗻 𝗱𝗼 𝗶𝘁 𝗯𝗲𝘁𝘁𝗲𝗿? I work with businesses to eliminate inefficiencies through AI-driven automation, cutting costs, increasing productivity, and transforming raw data into actionable insights. 𝐇𝐨𝐰 𝐈 𝐃𝐞𝐥𝐢𝐯𝐞𝐫 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐈𝐦𝐩𝐚𝐜𝐭 𝐰𝐢𝐭𝐡 𝐀𝐈: ➤ AI Agents & Automation Design and deploy intelligent agents that streamline complex workflows, across support, compliance, finance, operations, HR, and supply chains, using LangChain, LangGraph, and tools like n8n. ➤ Multi-Agent Systems & Agentic AI Engineer cooperative AI environments capable of autonomous task execution and decision-making for large-scale business operations. ➤ RAG & Smart Knowledge Retrieval Build solutions using Retrieval-Augmented Generation (RAG) that enhance LLMs with contextual, real-time enterprise data for more accurate insights. ➤ Generative AI for Growth Develop AI tools for content generation, automated market research, and conversational bots that increase engagement and open new revenue channels. ➤ Enterprise-Ready Integrations Seamlessly connect OpenAI (GPT-4o, GPT-4, GPT-3.5), Claude, Gemini, Llama 3, and custom models into your workflows for real-world value. I specialize in full-stack AI app development and enterprise system integration. ➤ Production-Grade AI Deployment Deliver scalable, secure AI platforms using Python, FastAPI, Django, Docker, and Kubernetes—deployed on AWS, Azure, or GCP, supported by modern CI/CD practices. ✅ Why Clients Trust My Work: - Enterprise-Level Experience: I build beyond proof-of-concepts, delivering scalable, outcome-oriented AI systems. - Advanced Specialization: Deep expertise in Prompt Engineering, LLM Tuning, RAG, and AI infrastructure design. - Transparent, Impact-Driven Approach: I focus on measurable business outcomes, not just building shiny tech. - Connected to the Pulse of AI: I actively contribute to AI communities and collaborate with LangChain’s core team to stay ahead of innovation. 📂 Recent AI Projects: - Marketing: Automated campaign planning via AI-powered research and content generation. - Crypto: Developed an AI trading co-pilot to assist with smart, real-time decisions. - IT & Networking: Built autonomous agents to troubleshoot and resolve network issues proactively. - Healthcare: Created a medical AI assistant that converts patient conversations into structured EMR notes. - Construction: Engineered a system that extracts data from complex architectural and permit PDFs.

I’m an AI & Full-Stack Developer focused on building production-ready SaaS applications, AI integrations, backend APIs, automation workflows, and scalable web platforms. I work across the full development lifecycle — from backend architecture and API development to AI integrations, payments, authentication, database design, deployment, debugging, and production stabilization. Recently, I worked on a production AI Receptionist SaaS platform where businesses can subscribe to plans, provision AI receptionists, receive customer calls through dedicated AI phone numbers, manage usage, view call logs, and control billing. My work on this platform included: • AI & Telephony Integration — Retell AI agents, phone numbers, inbound call routing, webhooks, call logs, summaries, and voicemail fallback • SaaS Billing — Stripe Live checkout, subscription plans, webhook processing, billing-cycle handling, usage tracking, overage preferences, and secure production payment testing • Backend Architecture — REST APIs, service-layer architecture, webhook idempotency, tenant isolation, usage accounting, call admission logic, feature flags, and fail-safe production behavior • Production Deployment — Vercel frontend deployment, Render backend deployment, custom production domains, environment configuration, MongoDB Atlas, CORS, and production debugging • Security — webhook signature verification, secure demo sessions, read-only demo protection, SSRF-safe website scanning, tenant authorization, and secret management • Frontend Development — React, TypeScript, responsive SaaS dashboards, pricing interfaces, billing settings, usage dashboards, and mobile-friendly UI I also build AI-powered applications using Python and FastAPI, including RAG systems, semantic search, embeddings, vector databases, structured LLM outputs, and AI-assisted workflows. My core technologies include: Python • FastAPI • Node.js • Express • TypeScript • React • REST APIs • PostgreSQL • MongoDB • Docker • AWS • Stripe • Retell AI • LLM APIs • RAG • Vector Databases • Vercel • Render • GitHub Actions I can help with: • AI SaaS application development • AI API and LLM integration • FastAPI / Node.js backend development • React + TypeScript applications • Stripe payment and subscription integration • Voice AI / AI receptionist systems • REST API development and integration • Webhook architecture • SaaS authentication and multi-tenant systems • RAG and semantic search systems • Production deployment and debugging • Existing SaaS stabilization and feature development If you already have an application that needs fixing, scaling, deploying, or integrating with AI services, I can also work directly with an existing codebase rather than rebuilding everything from scratch.

I build and stabilize revenue-critical systems where reliability directly impacts transactions—payment processing, POS integrations, and backend APIs that connect software with real-world devices. With 6+ years in Java/Spring Boot and integration-heavy engineering, I specialize in systems that must work under real production constraints—not prototypes. I’ve delivered backend services and integrations involving: - Payment gateways and transaction flows (reliable webhook + failure handling) - POS systems and hardware integrations (Clover, Moneris, Pax, Verifone) - Android-based device bridges using local APIs (Kotlin/Ktor) - High-traffic Java APIs with clean architecture and production stability - Full-stack delivery when needed (Laravel + Vue.js systems) What I solve: - Payment failures, retry logic, and webhook reliability issues - POS + terminal integration problems (sync, latency, offline handling) - Slow or unstable backend APIs under production load - “Works in dev but fails in production” integration bugs - End-to-end system design for revenue workflows How I work: I focus on clarity, stability, and predictable delivery: - Clean API design (Spring Boot / REST / OpenAPI) - Production-ready integration with proper error handling - Structured handoff (docs, Postman collections, deployment notes) - Transparent updates and realistic timelines Tech stack: Java · Spring Boot · Kotlin (Android) · Laravel · Vue.js · AWS · Docker · MySQL · REST APIs · Webhooks · POS SDKs · Kafka (when required) Available for contract or long-term work. ----------------------------------------------------------------------------------------------------------------------- Send me your system or integration problem—I’ll respond with a clear approach, risks, and implementation plan.

I am a full-stack web developer with 3+ years of experience building Django/React/Remix Web applications. I've built apps serving hundreds of concurrent users, and integrated payment gateways such as Stripe and Square. I've also worked on generative AI features such as document parsing, text summarisation and speech-to-text reporting. I'm able to handle deployment (via AWS, GCP or a VM provider of your choice), CI/CD (GitHub Actions), and containerisation. On the client side, I build with JavaScript (ES6), TypeScript and React, with TailwindCSS, ShadCN UI, Mantine and Bootstrap.

Senior Ruby on Rails & React Developer | SaaS | APIs | AWS Hi, I'm Ronak, a Senior Full-Stack Developer with 10+ years of experience building SaaS platforms, marketplaces, business applications, and scalable web products. I specialize in Ruby on Rails, React, PostgreSQL, AWS, and API development. Over the years, I've helped startups and growing businesses build new products, scale existing applications, modernize legacy systems, and improve performance. I can help with: ✅ Ruby on Rails Development ✅ React.js Development ✅ REST API & GraphQL Development ✅ SaaS Product Development ✅ Marketplace Platforms ✅ Payment Gateway Integrations (Stripe, PayPal) ✅ Database Design & Optimization ✅ Performance Tuning ✅ Background Job Processing (Sidekiq, Redis) ✅ Rails Upgrades & Legacy Application Modernization ✅ AWS Deployment & Infrastructure ✅ Third-Party API Integrations Technical Expertise Backend: • Ruby • Ruby on Rails • PostgreSQL • MySQL • MongoDB • Redis • Sidekiq • REST APIs • GraphQL Frontend: • React.js • JavaScript • TypeScript • Vue.js • HTML5 • CSS3 • SASS • Bootstrap • Tailwind CSS Cloud & DevOps: • AWS • Heroku • Google Cloud Platform • Docker • CI/CD Pipelines Tools & Technologies: • GitHub • GitLab • Jira • Slack • Trello • Sentry • Honeybadger • New Relic • Rollbar • Elasticsearch Why clients choose to work with me: ✔ 10+ years of professional development experience ✔ Clean, maintainable, and scalable code ✔ Strong communication and reliability ✔ Fast onboarding into existing projects ✔ Experience working with startups and remote teams ✔ Focus on long-term solutions rather than quick fixes Whether you need a new application built from scratch, a Rails application upgraded, performance improvements, API integrations, or an experienced full-stack developer to join your team, I can help. Let's discuss your project and how I can contribute to its success.

I am a Senior Software Engineer with 19 years of experience, specializing in creating clean and efficient code. My background includes front-end and full-stack development, allowing me to deliver robust web applications for various sectors. I excel in collaborating with teams to implement innovative solutions that drive product success. My meticulous approach ensures high-quality outcomes, meeting deadlines without compromise. I am committed to developing software that not only meets client specifications but also enhances user experience. If you’re seeking a developer who combines technical expertise with a strong focus on teamwork, let’s discuss how I can contribute to your project.