Pawan K.

Need a senior full-stack developer to build, stabilize, or scale your SaaS product? I help startups and growing businesses develop production-ready SaaS platforms, MVPs, custom web applications, CRMs, ERPs, marketplaces, and workflow automation systems using React, Next.js, Node.js, TypeScript, Laravel, and PostgreSQL. I bring 10+ years of development experience, 10,000+ Upwork hours, $100K+ earned, 60+ Upwork jobs, Top Rated status, and a 100% Job Success Score. My services include: ✓ SaaS and MVP development ✓ React, Next.js, and TypeScript frontend development ✓ Node.js, Laravel, and PHP backend development ✓ Custom CRM, ERP, and business-management platforms ✓ REST API, GraphQL, webhook, and third-party integrations ✓ AI and LLM feature integration ✓ Stripe, PayPal, and subscription-payment integration ✓ PostgreSQL, MySQL, MongoDB, and Redis architecture ✓ AWS, Docker, Nginx, and CI/CD deployment ✓ Legacy application modernization and performance optimization ✓ Testing, production deployment, and ongoing maintenance CORE TECHNOLOGY STACK React | Next.js | TypeScript | JavaScript | Node.js | Express.js | Laravel | PHP | PostgreSQL | MySQL | MongoDB | Redis | REST APIs | GraphQL | AWS | Docker | Stripe HOW I WORK I begin by understanding your business goals, users, and workflows. I then recommend a practical architecture and take ownership of development—from database and API design through frontend implementation, testing, and production deployment. You can work with me if you: • Have an idea that needs to become a scalable MVP • Need an experienced developer to complete or stabilize an existing product • Want to modernize a legacy application • Require new features, integrations, or performance improvements • Need reliable long-term development support Send me a message with your requirements, existing application details, or technical challenges. I’ll help you identify the most practical next step. Full Stack Developer | Full Stack Development | SaaS Developer | SaaS Development | SaaS Application Development | Custom Web Application Development | Web Application Development | Custom Software Development | MVP Development | React Developer | React Development | React.js Development | Next.js Developer | Next.js Development | Node.js Developer | Node.js Development | TypeScript Development | JavaScript Development | Laravel Developer | Laravel Development | PHP Development | API Development | REST API Development | REST API Integration | GraphQL Development | Third-Party API Integration | CRM Development | ERP Development | Marketplace Development | Workflow Automation | AI Integration | AI Implementation | AI Application Development | LLM Integration | PostgreSQL Development | MySQL Development | MongoDB Development | Redis | Supabase | Database Architecture | SaaS Architecture | Stripe Integration | Payment Gateway Integration | AWS Development | AWS Deployment | Docker | CI/CD | Legacy Application Modernization | Web Application Maintenance | Performance Optimization