Hire the Best Full Stack Developers

𝐌𝐨𝐬𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 𝐰𝐫𝐢𝐭𝐞 𝐜𝐨𝐝𝐞. 𝐈 𝐛𝐮𝐢𝐥𝐝 𝐨𝐮𝐭𝐜𝐨𝐦𝐞𝐬. I've spent 6+ years turning complex product ideas into fast, clean, production-ready web applications using React, Angular, Node.js, and TypeScript, with AI baked in where it actually saves time and money. Not as a gimmick. As a real competitive edge. Whether you're a startup chasing an MVP deadline, a growing SaaS needing a performance overhaul, or an enterprise team looking to automate painful manual workflows with GPT or Claude. I've been there, done it, and delivered. 𝐈'𝐕𝐄 𝐃𝐎𝐍𝐄 𝐓𝐇𝐈𝐒 𝐊𝐈𝐍𝐃 𝐎𝐅 𝐏𝐑𝐎𝐉𝐄𝐂𝐓 𝐁𝐄𝐅𝐎𝐑𝐄 Here's a slice of what I've actually shipped in the last 6 years: 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐌𝐌𝐀 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 built a live data pipeline + AI-powered stats dashboard for fight analytics, handling real-time events at scale 𝐁𝟐𝐁 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐒𝐮𝐢𝐭𝐞 𝐟𝐨𝐫 𝐘𝐮𝐦𝐚𝐏𝐎𝐒 replaced a manual sales & onboarding process with a GPT-driven workflow, cutting ops time by 80% 𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐓𝐫𝐚𝐧𝐬𝐟𝐨𝐫𝐦𝐚𝐭𝐢𝐨𝐧 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 (𝐦𝐮𝐥𝐭𝐢𝐩𝐥𝐞) modernized legacy systems for businesses moving from offline to full-stack SaaS products 𝟏𝟎𝟎+ 𝐞𝐧𝐝-𝐭𝐨-𝐞𝐧𝐝 𝐟𝐮𝐥𝐥 𝐬𝐭𝐚𝐜𝐤 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 across industries: fintech, healthtech, logistics, e-commerce, and enterprise SaaS 𝐀𝐈-𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞𝐝 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 embedded GPT-4, Claude, and Gemini into support systems, document workflows, and decision automation REAL NUMBERS FROM REAL PROJECTS 45% increase in Annual Recurring Revenue after automating sales and onboarding flows with AI 80% reduction in manual work by integrating GPT into document handling pipelines 60% fewer support tickets after deploying AI-powered chat solutions 3x faster MVP delivery using AI-assisted coding and modular architecture Scalable platforms supporting 10,000+ daily users with zero downtime 𝐖𝐇𝐘 𝐂𝐇𝐎𝐎𝐒𝐄 𝐌𝐄 There are thousands of full stack developers on Upwork. Here's the honest difference: I have a Master's in Computer Science from University of Karachi. I think in systems, not just syntax I've worked both in-house (Burhani IT) and as a freelancer I know how real teams operate I integrate AI tools that actually reduce your costs not just buzzwords tacked onto a proposal I own the project. No ghosting, no excuses, no hand-holding required from your side I communicate like a business partner, not a contractor waiting for instructions My turnaround is fast AI-enhanced tooling (Cursor, Replit) lets me ship 30% faster without cutting corners I'm selective about the projects I take. I only say yes when I know I can deliver real value. which means when I do say yes, you can hold me to it. 𝐖𝐇𝐘 𝐂𝐇𝐎𝐎𝐒𝐄 𝐌𝐄 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React.js, Angular, Next.js, Vue, TypeScript, Redux, NgRx, Material UI, Tailwind 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Node.js, Express, NestJS, Firebase, GraphQL, REST, Java 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: MongoDB, Firestore, MySQL, MSSQL, Oracle, PostgreSQL 𝐀𝐈 & 𝐀𝐏𝐈𝐬: GPT-4, Claude, Gemini, OpenAI API, Stripe, Plaid, Google Maps, SendGrid, Twilio 𝐃𝐞𝐯𝐎𝐩𝐬: AWS (EC2, S3, Elastic Beanstalk, Route 53), GCP, Azure, Docker, CI/CD, Nginx 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: Jest, Jasmine 𝐓𝐨𝐨𝐥𝐬: Jira, Trello, ClickUp, GitHub, GitLab, Bitbucket, Cursor, Replit, Lovable

I help startups and SaaS teams build and scale production-ready web applications using React, Next.js, and Node.js. Whether you're launching an MVP, improving performance, or scaling an existing product, I take full ownership of the feature from architecture to deployment so it works reliably in production, not just in development. I’ve built dashboards, authentication systems, payment integrations, and complex backend workflows for long-term SaaS platforms. I’m comfortable working inside existing codebases, improving architecture, and shipping clean, maintainable solutions. Core stack: React.js, Next.js, TypeScript, Node.js, Express.js Supabase, MySQL, MongoDB, Firebase REST APIs, GraphQL, TanStack, React Query, JWT, OAuth, role-based auth Vercel, Google Cloud, serverless deployments I’m comfortable working inside existing codebases, refactoring messy systems, optimizing database queries, and improving backend performance. What I bring: • Full stack ownership (frontend + backend) • Scalable API and backend architecture • Secure authentication and payment integrations • Clean TypeScript-based code structure • Performance optimization and refactoring • Smooth deployments (Vercel, GCP, AWS, serverless) You won’t need to micromanage me. I communicate clearly, think in systems, and focus on building software that lasts.

For the past 12+ years, I have helped startups, SaaS companies, fintech businesses, and growing teams turn ideas into reliable, scalable products. As a Senior Full Stack Architect and Top Rated Plus developer, I work closely with founders and businesses to build systems that are fast, maintainable, and ready for growth. My expertise covers the entire development lifecycle from architecture planning and full-stack development to performance optimization, cloud deployment, and ongoing technical guidance. Whether you're launching a new platform, modernizing an existing application, or preparing for rapid growth, I focus on delivering solutions that support your business goals. If you are ready to build a software product that ships on time, maintains a 𝟗𝟎+ 𝐋𝐢𝐠𝐡𝐭𝐡𝐨𝐮𝐬𝐞 𝐬𝐜𝐨𝐫𝐞, and actually retains users, 𝘀𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 or book a consultation directly from my profile. I respond immediately. ✅ 𝗞𝗘𝗬 𝗔𝗖𝗛𝗜𝗘𝗩𝗘𝗠𝗘𝗡𝗧𝗦: • 12+ years of professional engineering experience with a "no-template" clean-code philosophy • 3,000+ hours logged on Upwork with a consistent Top Rated Plus success record • 50K+ active users supported on a SaaS platform I architected, reducing server costs by 35% • 40% reduction in latency achieved by migrating complex finance platforms to optimized AWS environments • 99.99% uptime maintained for mission-critical applications through rigorous CI/CD and Docker orchestration • 70% of clients continue for 12+ months of ongoing strategic development and scaling • 2x faster MVP launches delivered using an AI-native workflow (Cursor, Claude Code, Aider) ✅ 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞 𝗔𝗡𝗗 𝗘𝗡𝗚𝗜𝗡𝗘𝗘𝗥𝗜𝗡𝗚 𝗘𝗫𝗘𝗖𝗨𝗧𝗜𝗢𝗡 I build on the high-performance tooling that top-tier engineering teams rely on: 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐄𝐱𝐜𝐞𝐥𝐥𝐞𝐧𝐜𝐞: React.js, Next.js, Angular, TypeScript, Tailwind CSS (Pixel-Perfect UI) 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐋𝐨𝐠𝐢𝐜: .NET Core, Node.js, Python (FastAPI), Laravel, Express.js 𝐃𝐚𝐭𝐚 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞: PostgreSQL, MySQL, MongoDB, Redis, AWS, Azure, Docker 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: n8n, Make. OpenAI/Claude API integration, Computer Vision (OpenCV) 𝐐𝐀 & 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞: Rigorous mobile-responsiveness audits and sub-2-second load time optimization Every tool in this stack exists to serve one outcome: a digital product that is secure, scalable, and ready to generate real revenue from day one. ✅ 𝗪𝗛𝗔𝗧 𝗦𝗘𝗧𝗦 𝗠𝗬 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 𝗔𝗣𝗣𝗥𝗢𝗔𝗖𝗛 𝗔𝗣𝗔𝗥𝗧 Most developers hand you a template-based site and disappear. I own the entire stack: architecture decisions, custom logic, security review, and post-launch iteration. I prioritize modular, custom-coded solutions over bloated visual builders like Elementor or Divi. When your system needs to scale to 10K+ concurrent users, the architecture I build is designed to handle the load without breaking. My development framework is built around three principles: Performance First (90+ Lighthouse scores), Full Stack Ownership (from database schema to UI), and Business Alignment (I measure success by your ROI, conversion rates, and system stability). ‼️ 𝗛𝗜𝗥𝗘 𝗠𝗘 𝗜𝗙 𝗬𝗢𝗨 𝗡𝗘𝗘𝗗 ‼️ A Senior Architect who delivers production-ready code with enterprise-grade security A Full Stack Developer who connects complex backend logic to a seamless, high-speed frontend Custom SaaS Development including multi-tenant architecture and automated billing systems AI Integration including automated grading systems, computer vision, or LLM-powered workflows A Technical Partner who acts as your "Right-Hand," communicates daily, and ships on schedule 𝗪𝗵𝗮𝘁 𝗺𝘆 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: Custom Engineering & Security: High-speed, optimized code with 100% responsiveness, modular architecture, and pre-deployment security audits on every engagement. AI-Native Solutions: Integration of advanced AI logic layers, automated lead routing, and computer vision monitoring systems to give your business a competitive edge. Performance-Driven Full Stack: Next.js and .NET/Node backends connected to lightning-fast frontends, ensuring your users never wait for a page to load.

Hey there! With 6 𝘆𝗲𝗮𝗿𝘀 of 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲, I help businesses build modern, high-performance applications. My expertise includes React, Angular, Node.js, PHP, Python, WordPress, and Shopify, supported by strong cloud deployment skills on AWS and Azure. 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: I specialize in both backend and frontend development, with strong expertise in: 💻 Laravel (Filament, Livewire, Nova, Inertia) 💻 React.js, Next.js, Vue.js, Nuxt.js, Angular.js, Node.js 💻 RESTful API Development & Integration 💻 Cloud Services (AWS, Azure, DigitalOcean) 💻 Database Design (MySQL, PostgreSQL, MongoDB, Oracle) 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜 𝗣𝗿𝗼𝘃𝗶𝗱𝗲: 🔹 Full Stack Development (Web) 🔹 API Design, Development & Integration 🔹 Business Web Applications – SaaS, ERP, GIS 🔹 E-commerce Solutions & Online Stores 🔹 Landing Pages & Corporate Websites 🔹 Website Redesign & Revamp 🔹 Figma to Clean Responsive Code 🔹 Speed & Performance Optimization 𝗪𝗵𝗮𝘁 𝗠𝗮𝗸𝗲𝘀 𝗠𝘆 𝗪𝗼𝗿𝗸 𝗦𝘁𝗮𝗻𝗱 𝗢𝘂𝘁: 🔹 7 years of hands-on industry expertise 🔹 Clear and consistent client communication 🔹 Solutions tailored to business objectives 🔹 Future-ready, scalable architecture 🔹 Timely delivery with attention to detail 🔹 Ongoing support after deployment 𝗟𝗲𝘁’𝘀 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗲: Whether you need a product developed from scratch or want to improve an existing application, I deliver tailored, high quality solutions aligned with your goals. Let’s connect to discuss your project and plan the best approach for success. 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with expertise in React.js, Next.js, Vue.js, Angular.js, and Node.js. Skilled in Laravel, PHP, Python, and JavaScript for both frontend and backend development. Proficient in RESTful API design, SaaS and ERP development, responsive web design, mobile app development, cloud solutions (AWS, Azure), database management (MySQL, PostgreSQL, MongoDB, Oracle), CI/CD pipelines, scalability, and code optimization.

Hi, I'm Kevin Savaliya 👋 Looking for a reliable Full Stack Developer to build a fast, scalable, and high-quality web application? You're in the right place. I'm a Top Rated Full Stack Developer with 8+ years of experience helping startups, SaaS companies, agencies, and businesses build modern web applications. With a 100% Job Success Score and a proven track record on Upwork, I build software that solves real business problems, improves user experience, and helps businesses grow. Whether you need a Startup MVP, SaaS platform, custom web application, business management system, admin dashboard, AI-powered application, or API integration, I can help from planning to deployment. I believe great software is not just about writing code. It's about understanding your business, finding the right solution, and building an application that is secure, scalable, and easy to maintain. Why Clients Choose Me When you work with me, you get more than just a developer. You get a reliable partner who cares about your project's success. ✔ Top Rated Freelancer ✔ 100% Job Success ✔ 8+ Years of Experience ✔ End-to-End Full Stack Development ✔ Clean & Easy-to-Maintain Code ✔ Scalable Solutions ✔ Business-Focused Approach ✔ Fast & Clear Communication ✔ On-Time Delivery ✔ Long-Term Support ✔ Secure & High-Performance Applications What My Clients Say ⭐ "Kevin delivered excellent work on time and communicated clearly throughout the project. Highly recommended!" ⭐ "Professional, responsive, and easy to work with. Kevin always suggested the best solution for our project." ⭐ "Kevin understood our requirements quickly and delivered exactly what we needed. We look forward to working with him again." My goal is to build long-term relationships by delivering quality work and making every project a success. What I Can Build ➤ SaaS Platforms ➤ Startup MVPs ➤ Custom Web Applications ➤ Business Management Systems ➤ Enterprise Applications ➤ CRM & ERP Systems ➤ Admin Dashboards ➤ Customer Portals ➤ Marketplace Platforms ➤ E-commerce Applications ➤ AI-Powered Applications ➤ Internal Business Tools ➤ REST APIs ➤ GraphQL APIs ➤ Third-Party API Integrations ➤ Payment Gateway Integrations ➤ Real-Time Applications ➤ Cloud Applications ➤ Performance Optimization ➤ Application Maintenance & Support Frontend Development I build fast, responsive, and user-friendly websites that work well on all devices. ✦ React.js ✦ Next.js ✦ JavaScript ✦ TypeScript ✦ HTML5 ✦ CSS3 ✦ Tailwind CSS ✦ Bootstrap ✦ Material UI ✦ SCSS ✦ Redux Toolkit ✦ Context API ✦ Responsive Design ✦ Progressive Web Apps (PWA) ✦ Server-Side Rendering (SSR) ✦ Static Site Generation (SSG) ✦ SEO Optimization ✦ Performance Optimization Backend Development I build secure, scalable, and reliable backend systems. ✦ Node.js ✦ Express.js ✦ REST APIs ✦ GraphQL ✦ Authentication & Authorization ✦ JWT ✦ OAuth ✦ Role-Based Access Control (RBAC) ✦ Third-Party API Integration ✦ Payment Gateway Integration ✦ OpenAI API ✦ ChatGPT Integration ✦ AI Integration ✦ WebSockets ✦ Real-Time Applications ✦ Google Maps API Database ✦ MongoDB ✦ PostgreSQL ✦ MySQL ✦ Database Design ✦ Data Modeling ✦ Query Optimization Search Technologies ✦ Elasticsearch ✦ OpenSearch ✦ MongoDB Atlas Search Cloud & DevOps ✦ AWS (EC2, S3, ECR, Elastic Beanstalk) ✦ Docker ✦ Docker Swarm ✦ PM2 ✦ CI/CD Pipelines ✦ Git ✦ GitHub ✦ Vercel Industries I've Worked With ✔ SaaS ✔ Artificial Intelligence (AI) ✔ Healthcare ✔ FinTech ✔ E-commerce ✔ Education ✔ Real Estate ✔ Logistics ✔ Transportation ✔ Travel & Hospitality ✔ Marketplace Platforms ✔ CRM ✔ ERP ✔ Enterprise Software ✔ Startup Products How I Work ➜ Understand your business, goals, and project requirements. ➜ Suggest the best technology and development approach. ➜ Build clean, secure, and scalable applications. ➜ Keep you updated throughout the project. ➜ Test everything carefully before delivery. ➜ Provide ongoing support after launch. What You Can Expect ➥ Clear Communication ➥ Fast Response ➥ Regular Project Updates ➥ Clean & Well-Organized Code ➥ Scalable Applications ➥ Secure Development ➥ High Performance ➥ On-Time Delivery ➥ Business-Focused Solutions ➥ Long-Term Support ➥ A Reliable Development Partner 🤝 Let's Talk About Your Project Whether you're building a Startup MVP, SaaS platform, custom web application, AI-powered solution, or improving an existing product, I'm here to help. My goal is simple: → Understand your business and your goals. → Build high-quality software. → Deliver your project on time. → Help your business grow. → Become your long-term development partner. 📩 Send me a message or invite me to your project. I'd love to discuss your idea and help you build something great.

🚀 𝐀𝐧𝐲𝐨𝐧𝐞 𝐜𝐚𝐧 𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐞 𝐀𝐈 𝐜𝐨𝐝𝐞. 𝐁𝐮𝐭 𝐈 𝐦𝐚𝐤𝐞 𝐢𝐭 𝐬𝐞𝐜𝐮𝐫𝐞, 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐚𝐧𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲. 🔥 85+ completed projects (40+ SaaS & MVP platforms) delivered as a Full Stack Developer & React Developer 💰 Startup MVP platforms generated $500K+ revenue in their first 6 months 👥 SaaS products supporting 10K–50K active users built by an expert Full Stack Developer 📈 One platform grew from 2K to 7K users through continuous product updates by a Web Developer ⚡ Backend systems processing 300K–500K API requests every month 🚀 Startup MVPs delivered in 2–4 weeks (complex Startup MVP delivered in just 2 days by a Full Stack Developer) ⏱️ Optimized AI dashboard loading times from 2 minutes down to 3 seconds for 10K–50K active users 🎬 Video generation architecture supporting a heavy load of several thousand concurrent users 📊 5+ years building SaaS platforms & Startup MVPs as a professional Full Stack Developer 📦 100+ API integrations completed across production systems by a Full Stack Developer ⚙️ 20+ backend architectures designed from scratch for Mobile App Developer projects 🧠 AI integrations across 30+ commercial projects as a React Developer & Full Stack Developer 💼 I help founders build SaaS platforms, Startup MVPs, AI applications, Customer Portals, Marketplaces, and scalable Web Applications using React, Next.js, Node.js, Supabase, PostgreSQL, Stripe, Redis, and AI APIs as a Full Stack Developer. 🛠️ As a SaaS Developer, MVP Developer, Full Stack Developer, Software Developer, React Developer, WordPress Developer, Mobile App Developer, and Web Developer, I've delivered 85+ production projects (40+ SaaS & MVP platforms). As a Full Stack Developer, I help startups validate ideas, launch products in 2–4 weeks (complex MVP platforms in 2 days), and scale apps supporting 10K–50K active users with $500K+ revenue milestones. 🚀 Many companies hire me as a SaaS Developer, MVP Developer, Full Stack Developer, Startup Developer, React Developer, WordPress Developer, Mobile App Developer, Web Developer, and AI SaaS Developer. As a Full Stack Developer, I build products designed to scale. Systems I've developed as a Full Stack Developer process 300K–500K API requests monthly, integrate 100+ APIs, support 10K–50K active users, and grow years after MVP launch, generating $500K+ revenue. 🎯 Unlike many Software Developers, WordPress Developers, or basic Web Developers, I focus on the entire product lifecycle as a Full Stack Developer—from MVP planning to production infrastructure, subscription systems, customer portals, and SaaS scalability. Whether you need a Full Stack Developer and React Developer for an AI dashboard or a Mobile App Developer for a cross-platform release, I deliver results. 🏆 Why Founders Hire Me as a SaaS Developer & Full Stack Developer: 5+ years working as a SaaS Developer, MVP Developer, React Developer, WordPress Developer, Mobile App Developer, Web Developer, and Full Stack Developer. As a Full Stack Developer, I delivered 85+ projects, including 40+ SaaS & MVP platforms supporting 10K–50K active users. Startup MVP delivered in 2–4 weeks (complex MVP platforms in 2 days) by an expert Full Stack Developer. Production-ready products supporting 10K–50K active users after launch designed by a Full Stack Developer. One Startup MVP built by a Full Stack Developer generated $500K+ revenue during its first 6 months. One SaaS platform grew from 2K to 7K users through feature releases managed by a Full Stack Developer. Backend systems processing 300K–500K API requests every month created by a Full Stack Developer. 100+ API integrations (Stripe, Supabase, OpenAI, CRMs, payment gateways) completed by a Full Stack Developer. As a Full Stack Developer, I optimized AI dashboard loading times from 2 minutes down to 3 seconds for 10K–50K users. Built high-load video generation systems supporting several thousand concurrent users as a Full Stack Developer. Redis optimization reducing database load by 70%+ on high-traffic SaaS platforms supporting 10K–50K active users. React performance optimization improving Lighthouse scores to 90+ and reducing bundle sizes by 40%+ as a dedicated React Developer and Full Stack Developer. Experience building subscription platforms, customer portals, internal business systems, marketplaces, admin dashboards, WordPress Developer setups, Mobile App Developer integrations, and multi-tenant SaaS applications as a Full Stack Developer. Production architecture designed by a Full Stack Developer to support years of growth and generate $500K+ revenue. 📈 🚀 Startup Growth & Production Software with a Full Stack Developer As a SaaS Developer, MVP Developer, React Developer, Web Developer, WordPress Developer, Mobile App Developer, and Full Stack Developer, I help founders launch complex MVPs in 2 days and build scalable software capable of supporting 10K–50K users and generating $500K+ revenue.