Hire the Best Rapid Application Development Professionals

Have an innovative app idea, a prototype, or a business platform you want to bring to life? Whether you're starting with a simple concept or already experimenting with tools like Lovable, Bubble, Replit, or n8n, I can help turn your vision into something your customers will love to use. I help founders and businesses turn ideas into AI-powered products, internal tools, and scalable software, without wasting months or tens of thousands of dollars. Client results: • $350M+ raised by clients • 2M+ users on apps I designed and developed • 10K+ five-star reviews across apps built • Top 1% in App Design & Development on Upwork A few years ago, I was sitting exactly where many of my clients are today: trying to turn an idea into an app. I was looking for freelancers, tried to build it myself and hired the wrong teams. It was a nightmare to say the least. After years of mistakes and learning to code, I finally launched SchooLinks, which grew into an Inc. 5000 company and raised over $90 million. Since then, I've helped more than 150 founders launch products across SaaS, marketplaces, AI tools, mobile apps, and internal platforms... some of which have made it to Forbes. Book your consultation today! I’ll save you months of frustration by helping you understand the ins and outs of bringing an app / platform to life: How much it costs, how long it takes, what’s the process and more. The apps I’ve built come in the form of: SaaS platforms, internal platforms, Mobile & web apps, Marketplace apps. Trusted By: Harvard, Samsung, Indeed, Yamaha, University of South Florida, and more. Technologies: OpenAI, Claude, Gemini, Flutter, Node.js, Angular, AWS, MongoDB, Figma If you’re serious about building your app the right way, let’s talk!

✅ 𝗠𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝟳-𝟴 𝗳𝗶𝗴𝘂𝗿𝗲 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗲𝘀 & 𝗦𝗮𝗮𝗦 𝗰𝗹𝗶𝗲𝗻𝘁𝘀/𝗮𝗽𝗽𝘀 𝗮𝗰𝗾𝘂𝗶𝗿𝗲𝗱. ✅ 𝟳𝟱+ 𝗮𝗽𝗽𝘀 𝗯𝘂𝗶𝗹𝘁. 𝟭𝟭+ 𝘆𝗲𝗮𝗿𝘀 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲. ✅ 𝗔𝗰𝗰𝘂𝗿𝗮𝘁𝗲 & 𝗴𝘂𝗮𝗿𝗮𝗻𝘁𝗲𝗲𝗱 𝗾𝘂𝗼𝘁𝗲𝘀 𝘄𝗶𝘁𝗵 𝟯𝟬-𝟰𝟬% 𝗹𝗼𝘄𝗲𝗿 𝗰𝗼𝘀𝘁𝘀 𝗮𝗻𝗱 𝗱𝗲𝘃 𝘁𝗶𝗺𝗲𝘀 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗽𝗿𝗼𝗽𝗿𝗶𝗲𝘁𝗮𝗿𝘆 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸 𝘂𝘀𝗲(prebuilt-SaaS code). ✅ 𝗣𝗵𝗲𝗻𝗼𝗺𝗲𝗻𝗮𝗹 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗺𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝘀𝗸𝗶𝗹𝗹𝘀. 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝘁 𝗱𝗲𝘃 𝗽𝗿𝗼𝗰𝗲𝘀𝘀 𝗳𝗼𝗹𝗹𝗼𝘄𝗲𝗱 𝗯𝘂𝗶𝗹𝘁 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗼𝘁𝗵𝗲𝗿 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗲𝘀. ✅ 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀, 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲-𝗿𝗲𝗮𝗱𝘆 𝗳𝗿𝗼𝗺 𝗹𝗮𝘂𝗻𝗰𝗵. ✅ 𝗨𝗦 𝗰𝗹𝗶𝗲𝗻𝘁 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝘁𝘆. Hi, I’m Andrew! I specialize in delivering polished SaaS apps consistently focused on earning revenue. 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝗼𝗿 𝘀𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗱𝗶𝗿𝗲𝗰𝘁 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗮𝗻𝗱 𝗶𝗳 𝘁𝗵𝗲𝗿𝗲’𝘀 𝗮 𝗹𝗶𝗸𝗲𝗹𝗶𝗵𝗼𝗼𝗱 𝗼𝗳 𝗮 𝗴𝗼𝗼𝗱 𝗳𝗶𝘁 𝘁𝗼 𝘄𝗼𝗿𝗸 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿, 𝗜’𝗹𝗹 𝗶𝗻𝘃𝗶𝘁𝗲 𝘆𝗼𝘂 𝘁𝗼 𝗯𝗼𝗼𝗸 𝗮 𝗰𝗼𝗺𝗽𝗹𝗶𝗺𝗲𝗻𝘁𝗮𝗿𝘆 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝗰𝗮𝗹𝗹 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🗣 𝗝𝗼𝗵𝗻 𝗠𝘂𝗹𝗹𝗲𝗻𝗵𝗼𝗹𝘇 - 𝗛𝗲𝗮𝗱 𝗼𝗳 𝗦𝗮𝗹𝗲𝘀, 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝗶𝗰 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 - 𝗨𝗯𝗲𝗿 𝗘𝗮𝘁𝘀 ❝ Andrew is the most skilled freelancer and developer I have ever worked with, and I have worked with a lot. He was able to take very broad ideas and turn them into actionable insights and plans in a way I could never imagine was possible. Andrew is the best possible thing to happen to our business and the definition of a true professional. I could not recommend him enough. Anyone who has the opportunity to work with Andrew should consider themselves extremely lucky. ❞ I excel at expertly guiding the app dev process to max out your revenue-earning potential in contrast to your costs, and to steer you away from common SaaS app pitfalls. Client Outcome Examples: ⚡ amzalert.com (8-Figure Acquisition - Rebuilt In 4 Months) ⚡ launchcontrol.us (8-Figure Annual Recurring Revenue - ARR) ⚡ GuestBan.com (Concept-To-Live in 5 Months - 1M+ Monthly App Checkins) My support is based on hard-won successes built through more than a decade of SaaS app obsession. Most of my clients are: ☑️ Existing Businesses - Post-revenue ☑️ Solopreneurs & Small Teams - Wanting to build an MVP app ☑️ Funded Startups - Focused on turning funding into MRR ☑️ Existing Early Stage SaaS - Want to rebuild and scale up I’m the founder of a small, hand-picked team of talented humans. I’m personally involved in all projects, and we only employ senior developers and native English speakers from the US for project management and communication. My team and I are able to consistently reduce dev costs by about 30-40% by leveraging pre-built development frameworks for common app experiences like the user login or checkout, for example, while reserving valuable dev hours for truly custom functionality. Every project we build delivers: 📱Cross Device Compatibility - Desktop - Mobile - Tablet 📈 App Speed Optimization 🧩 Scaleable - Cost-Effective Feature Addition Potential 🛡️ Security 📊 User Analytics & Internal Dashboards 🌐 Multi-Language Localization 🤖 Quality Assurance - QA 📜 Paid User Subscription, Billing & Renewal Management Thanks for taking the time to learn more about me. Invite me to your project or send me a direct message if you’re interested in working together. Talk soon! Andrew Mace - Founder - Lean Engineering Highlights of the work I have extensive experience in includes: SaaS MVP • AI Automation • No-Code/Low-Code • Process Automation • RPA • .NET 8 • Python • AWS • Azure • Docker • Serverless • OpenAI / ChatGPT • Generative AI • Zapier • Make.com • UiPath • Power Automate • n8n • Bubble • Airtable • Stripe • PayPal • Twilio • Slack • Teams • REST APIs • Webhooks • SQL • PostgreSQL • Redis • Power BI • KPI Dashboards • ETL • Airflow • Real-Time Chat • Push Notifications • Subscription Billing • CRM Integration • Lead Generation Bots • Data Analytics • Digital Transformation • Workflow Automation • Rapid Prototyping

𝗕𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗮𝗻 𝗔𝗜 𝗦𝗮𝗮𝗦, 𝗠𝗩𝗣, 𝗼𝗿 𝗜𝗻𝘁𝗲𝗿𝗻𝗮𝗹 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺? If you're looking for someone who can turn your idea into a production-ready product, not just write code, you're in the right place. Over the past 8+ years, I've helped startups and businesses build 20+ MVPs and production applications, taking products from idea to launch without the overhead of an agency or the complexity of managing multiple freelancers. Most founders come to me after losing months with development teams that overpromised, underdelivered, or disappeared halfway through the project. 𝗜 𝘄𝗼𝗿𝗸 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁𝗹𝘆. When you hire me, you work directly with the person building your product. No project managers. No account managers. No handoffs. Just clear communication, fast execution, and complete ownership from planning to deployment. I specialize in building scalable AI-powered products using Lovable, Supabase, Next.js, React, TypeScript, Node.js, PostgreSQL, and OpenAI. Whether you're validating a startup idea, replacing manual workflows, or scaling an existing SaaS platform, I build software that's designed to perform in production—not just look good in a demo. 𝗪𝗵𝗮𝘁 𝗜'𝘃𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱 • 8+ years of software development experience • 20+ MVPs for early-stage and growth-stage startups • MVPs launched in as little as 15 days • Helped clients build products generating $5K+ Monthly Recurring Revenue (MRR) • Experience contributing to products serving large organizations, including AAFES, SNAP, and enterprise/government initiatives 𝗜 𝗖𝗮𝗻 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗕𝘂𝗶𝗹𝗱 • AI SaaS Platforms • Startup MVPs • Internal Business Tools • Client Portals • Admin Dashboards • Workflow Automation • Marketplace Platforms • AI Integrations • Analytics & Reporting Systems • Custom Business Software 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜'𝘃𝗲 𝗪𝗼𝗿𝗸𝗲𝗱 𝗪𝗶𝘁𝗵 • Food & Hospitality • Sports • Entertainment • Enterprise & Government • Supply Chain • Sustainability & ESG Solutions • Consulting 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗖𝗮𝗻 𝗘𝘅𝗽𝗲𝗰𝘁 ✔ End-to-end product ownership ✔ Fast communication & quick responses ✔ Clean, scalable architecture ✔ Transparent development process ✔ Secure backend & database design ✔ AI & API integrations ✔ Production-ready deployments ✔ Long-term maintainable code My goal isn't simply to deliver features. My goal is to build software that helps your business launch faster, scale confidently, and create real business value. Clients appreciate working with me because I'm proactive, transparent, and deeply invested in the success of every project. I communicate clearly, respond quickly, and treat every product as if it were my own. If you're looking for the cheapest developer, I'm probably not the right fit. If you're looking for a technical partner who can own the product, solve problems independently, and help you move from idea to launch with confidence, let's talk. I intentionally limit the number of active projects I take on so every client receives my full attention. 𝗖𝗹𝗶𝗰𝗸 "𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯" 𝗮𝗻𝗱 𝘁𝗲𝗹𝗹 𝗺𝗲 𝘄𝗵𝗮𝘁 𝘆𝗼𝘂'𝗿𝗲 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴. 𝗜'𝗹𝗹 𝗿𝗲𝘃𝗶𝗲𝘄 𝘆𝗼𝘂𝗿 𝗶𝗱𝗲𝗮, 𝗿𝗲𝗰𝗼𝗺𝗺𝗲𝗻𝗱 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵, 𝗮𝗻𝗱 𝗽𝗿𝗼𝘃𝗶𝗱𝗲 𝗮 𝗿𝗲𝗮𝗹𝗶𝘀𝘁𝗶𝗰 𝘁𝗶𝗺𝗲𝗹𝗶𝗻𝗲 𝘄𝗶𝘁𝗵 𝗮 𝗳𝗶𝘅𝗲𝗱-𝗽𝗿𝗶𝗰𝗲 𝗽𝗿𝗼𝗽𝗼𝘀𝗮𝗹 𝘄𝗶𝘁𝗵𝗶𝗻 𝟮𝟰 𝗵𝗼𝘂𝗿𝘀.

I design and develop scalable, user-friendly web applications with a focus on innovation and efficiency. With a decade of experience, I excel in tackling complex coding challenges and managing multiple projects simultaneously. My strong foundation in software engineering is complemented by my passion for AI development, where I explore cutting-edge technologies to enhance user experiences. As a founder and lead developer, I have prioritized collaborative teamwork, mentoring fellow engineers, and fostering an environment that encourages creative problem-solving. If you're seeking a versatile developer who can deliver high-quality solutions while adapting to your unique project needs, let's connect and discuss how I can help bring your ideas to life.

I help startups and businesses build AI-powered SaaS platforms, marketplaces, and automation systems that reduce manual work and scale operations fast. I build production-ready web and mobile applications by combining 19+ years of hands-on development experience with AI-powered tools like Claude—shipping faster without compromising code quality, architecture, or UX. I also specialize in transforming outdated web apps into modern, AI-driven platforms with a clean, maintainable architecture so you’re not dependent on developers. for every small change. You’ll be able to handle minor updates yourself using AI tools like Codex or Claude. If you're looking for someone who understands both technology AND business outcomes, you're in the right place. 🚀 Core Expertise: AI-powered SaaS platforms Marketplace development (buyer/seller/admin systems) Business process automation Scalable backend architecture Custom dashboards & admin panels 🧠 How I Help You Whether you're launching an MVP or scaling an existing product, I can help you: ✅ Build your SaaS product from scratch ✅ Automate repetitive workflows using AI ✅ Develop secure and scalable backend systems ✅ Create seamless web & mobile applications ✅ Improve performance and reduce operational costs ⚙️ Tech Stack (Only What Matters) Mobile Application Development: We develop hybrid / cross-platform mobile applications using React Native CLI / EXPO, REDUX, and Flutter / Dart. PWA/progressive web application (React.js). Web Application Development: Full-Stack Development, Front-End Development, Back-End Development. MVP Development. SaaS development, Multitenancy Product Development. E-commerce & Social Media Websites. Front End Development: TypeScript, React.js, React remix, vite.js, Next.js, Vue.js, Nuxt.js, Tailwind CSS Back-end Development: Python (Django / flask / FastAPI), PHP (CodeIgniter / Laravel), Node.js (typescript), Express.js, Nest.js, fastify, Strapi Database: MongoDB, MySQL, PostgreSQL, SQLite, Amazon Redshift, MariaDB, AWS DynamoDB Tools & Technologies: Bitbucket, GitHub, Firebase, Websocket, Redis, Nginx, EC2, S3, RDS, and EBS (Elastic Block Store). 🤝 Let’s Work Together If you’re looking for: A reliable long-term developer Someone who understands business, not just code Fast execution with scalable architecture 👉 Let’s discuss your project. My experience spans various domains, as outlined below. 1. Asset management system: a web application and mobile applications for iOS and Android. 2. Location live tracking and WiFi data scanning: a web application and mobile applications for iOS and Android. 3. Habit-tracking mobile application for iOS and Android. 4. Retreat and hotel booking engine: Web Application. 5. Ticket booking system with live seat selection: web application. 6. Shipping container calculator: web application. 7. Job board mobile application and web application. 8. SaaS for hospital care and home care companies: web application and mobile application. 9. Courses booking system: A web and mobile application along with a scheduling system. E-Learning PWA: Learning languages and mobile app development. 10. SaaS for project management and task management. 11. Boutique hotel and retreat website designing. 12. Equipment rental e-commerce website development. 13. Event posting and chat system: mobile application development. 14. Development of a Bible reading mobile application with a subscription system, supporting Apple and Google Pay. 15. Dummy flight and hotel ticket booking website for visa applications. 16. SaaS for creating surveys and managing user responses. 17. Real estate website development with MLS grid integration. 18. SaaS for companies managing work assignments, customer invoicing, and task calendars. 19. Food delivery Mobile application. 20. Facebook Graph API, Instagram Graph API, Twitter API, and LinkedIn API data management. 21. Dating website development. 22. Classified listing website development. 23. Travel deals e-commerce website 24. Grocery delivery mobile application development. 25. E-commerce website for selling fine wines. 26. CV and resume creation web application. 27. Employee payroll management web application. 28. Loan management system web application. 29. scheduling system for booking home inspection appointments along with a payment gateway and connection with gohighlevel CRM. 30. revenue management system – pulls data from QuickBooks, the Mercury API and the Stripe API and calculates the revenue. 31. car and bike parts / equipment / marketplace / vendor-buyer concept. 32. SMS marketing system that is connected with Twilio 33. Developing an MVP using AI-based web application builders such as Lovable, Replit, Claude AI, Claude-assisted development and Cursor AI. Please send a message OR invite me to your job so we can schedule a Zoom meeting.

Businesses often outgrow spreadsheets, disconnected tools and off-the-shelf software that no longer fits how they operate. I design and build custom, database-driven business systems that bring processes, users and information together in one reliable platform. I work as a long-term technical partner for organizations that need complete, end-to-end solutions, including: • Custom CRM and ERP systems • Customer, member, employee and vendor portals • SaaS and multi-tenant web platforms • Internal operations and workflow systems • Database design and administration tools • Reporting dashboards and management visibility • API integrations and data synchronization • Legacy-system modernization and data migration As a Top Rated Plus Upwork professional with $300K+ earned and 6,900+ hours, I combine full-stack development, systems analysis and technical project leadership. I can take a project from initial discovery and process mapping through architecture, database design, development, testing, deployment and ongoing improvement. My experience includes building and supporting membership systems, admissions and learning platforms, expense-management workflows, operational dashboards, administrative portals, marketplace platforms and API-connected business applications. My approach is practical and structured: 1. Understand the business process and existing pain points 2. Define users, roles, workflows, data and reporting requirements 3. Design a maintainable system and database architecture 4. Deliver the solution incrementally with regular demonstrations 5. Manage testing, deployment, documentation and user adoption 6. Continue supporting and improving the platform as the business grows Core technologies include C#/.NET, ASP.NET, PHP, JavaScript, SQL Server, MySQL, REST APIs, HTML/CSS, Power Platform and modern web-development frameworks. Automation and AI can be incorporated where they deliver genuine business value, but the foundation is always a secure, maintainable and usable business system. I am best suited to clients looking for more than a short coding assignment—especially organizations seeking a dependable technical partner who can understand their operations, own delivery and support the system over the long term. Let's discuss your project and get the ball rolling, Zain H.