Senior Full-Stack Developer | Building Scalable SaaS, ERP, CRM, eCommerce & Custom Web Solutions I am a Senior Full-Stack Developer with over 6 years of experience helping startups, founders, and businesses build powerful digital products that are scalable, reliable, and aligned with real business goals. I specialize in developing custom web applications, including SaaS platforms, ERP systems, CRM solutions, eCommerce websites, chatbots, and WordPress-based projects. My approach combines technical expertise with strategic thinking to deliver solutions that are not only well-built, but also commercially effective. I work with clients who value quality, clear communication, and long-term results. Whether you need to build a platform from the ground up, improve an existing product, or strengthen your infrastructure, I bring the technical depth and professional discipline needed to execute at a high level. Core Expertise • Full-Stack Web Application Development • SaaS Product Development • ERP and CRM Systems • Custom eCommerce Platforms • WordPress Development • API Integration and Backend Architecture • Database Design and Optimization • DevOps, Deployment, and Infrastructure Management Technical Capabilities I have strong experience working with MySQL, PostgreSQL, and NoSQL databases, as well as deployment and infrastructure tools such as Docker, AWS EC2, Google Cloud, Azure Cloud, DigitalOcean and Ansible. I focus on building systems that are maintainable, secure, performant, and ready to scale. What Sets Me Apart • I understand business needs, not just code requirements • I deliver clean, scalable, and production-ready solutions • I communicate clearly and professionally throughout the project • I value deadlines, quality, and long-term client relationships • I bring a solution-focused mindset to every challenge My goal is to help clients build digital products that create real value, improve operations, and support growth with confidence. If you are looking for a dependable Senior Full-Stack Developer who can deliver premium-quality work and contribute strategically to your project, I would be pleased to connect.

Expert Oracle & MySQL Database Developer | Query Optimization & API Integrations With 24+ years of experience in database development, I specialize in Oracle (PL/SQL), MySQL, and SQL query optimization to improve performance, scalability, and efficiency. I have helped businesses reduce query execution times by 80%, migrate databases seamlessly, and integrate complex APIs for high-volume data processing. 🔹 Key Expertise: ✅ Oracle PL/SQL, MySQL, SQL Performance Tuning ✅ Database Design, Optimization, and Refactoring ✅ ETL, Data Migration, API & Automation Integrations ✅ Custom Reports & Dashboards (Looker Studio, BI Tools) ✅ Enterprise-level Systems for Finance, eCommerce, and SaaS My clients have described my work as "fast and precise," "expert-level tuning," and "seamless data integration." I am available for both short-term consulting and long-term database development projects. Let’s optimize your database performance today!

Professional in SQL Server, Access, MySQL, SQLLite, ASP.NET, VB.NET, VB6, JavaScript, DevExpress, Google APIs, Third party integration (like QuickBooks (QBSDK), DocuSign, Twilio), and Android development with more than 25 years of corporate experience in designing and developing commercial software solutions. I've been writing business software for more than 25 years, and I adore doing it. In order to come up with the best solution, I always think outside the box. I'm very independent, committed, and a self-learner who pays close attention to the little things. I don't quit until the job is successfully completed in accordance with your needs and expectations. I've worked on projects similar to this one before, so I can certainly assist you with this one as well. If you choose me for the job, I'll build it for you exactly as you envision it, and I'll do it quickly and cheaply.

Over 20 years, I have designed and/or developed numerous websites and intranet applications, ranging from small businesses to global corporations. I am capable of full stack design and development, however my primary competencies are data design, software architecture, and functionality-driven UI/UX. On the frontend I specialize in jQuery and jQueryUI. On the backend, I am fully proficient in PHP, MySQL, Apache web server, and Linux system administration. I am familiar with many PHP-based CMS systems and frameworks, including Drupal, CodeIgniter, Laravel, and MediaWiki. I have many years of Git experience using GitHub and BitBucket, as well as managing multiple repositories on a private server. I have used many issue tracking systems, including BugZilla, Traq, and Jira; I use FlySpray for my personal projects. I primarily work in Linux. Past projects I have worked on include calendar/scheduling, warehouse inventory, real estate listings, medical patient checkin, project management, and numerous e-commerce sites. I am looking for mid- to long term projects that I can really sink my teeth into.

I build systems that scale with your business because I care about two things equally: the quality of the code and the outcome it produces. As a Full Stack Developer with 13+ years of experience I have learned that clean architecture, efficient code and solid engineering decisions are what separate software that grows a business from software that slows it down. I am Zohaib, a Full Stack Developer specializing in React, Node.js, Next.js and TypeScript. I run a small senior team at Innovation Insight and I take full ownership end to end. No hand-offs, no disappearing after onboarding. 𝗧𝗿𝗮𝗰𝗸 𝗥𝗲𝗰𝗼𝗿𝗱 100+ projects delivered on Upwork 20 production SaaS platforms built end to end with live users and real revenue 5+ year partnership with Vonza generating $75K+ monthly recurring revenue 30+ interconnected apps shipped for PaintNite/Yaymaker on multi-cluster Kubernetes Full stack ownership from database schema through CI/CD to production monitoring 𝗪𝗵𝗮𝘁 𝗜 𝗛𝗮𝘃𝗲 𝗕𝘂𝗶𝗹𝘁 Vonza — $75K+ monthly recurring revenue. Five-plus year engineering partnership building and scaling an all-in-one online business platform competing directly with Kajabi and Teachable. As lead Full Stack Developer I architected the complete system: React and Next.js frontend, Node.js and NestJS backend, MongoDB database, Stripe Connect billing and 16+ integrated tools covering courses, communities, funnels and CRM. PaintNite— 30+ apps on multi-cluster Kubernetes. Led full modernization from React 16 and Webpack to Next.js 15, React 19 and TypeScript across 30+ interconnected applications. Multi-tenant architecture on multi-cluster Kubernetes. The project I point to when clients ask if I can handle real complexity at scale as a Full Stack Developer. Patrol6 — Enterprise IoT security SaaS. Real-time video analysis with Google Vertex AI, GPS tracking and AWS IoT Core device management. As Full Stack Developer I built the complete backend services, API architecture and security operations console. GovDoc.ai — Government contract intelligence. RAG pipelines with AWS Bedrock and Cohere embeddings transforming federal contracting documents into actionable intelligence. Full stack ownership as React Developer and Node.js Developer from database through deployment. Every one of these is live, serving real users, handling real money. 𝗪𝗵𝗮𝘁 𝗜 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗕𝘂𝗶𝗹𝗱 SaaS Platforms and MVPs. If you have a product idea I help you define the MVP scope, plan the architecture and build a scalable SaaS platform ready for real users and long-term growth. As a Full Stack Developer I handle everything from database schema and API design to React frontend and AWS deployment. I have built subscription billing with Stripe, multi-tenant architectures, onboarding flows and CRM systems inside production SaaS products. React and Next.js Web Applications. Modern React and Next.js frontends for SaaS dashboards, admin portals, multi-tenant platforms and product interfaces. TypeScript throughout. Component libraries that scale across white-label and multi-tenant SaaS. Recent work includes a design system for an influencer marketplace, a B2B admin dashboard for a 3D wheel configurator and an enterprise security operations console. Backend Systems and APIs. Node.js and NestJS backend systems handling business logic, authentication, third-party integrations and databases. REST and GraphQL APIs built to scale. As a Full Stack Developer and Node.js Developer I have integrated Stripe, PayPal, Twilio, OpenAI, AWS Bedrock, Mapbox, HubSpot, SendGrid and more inside production applications. React Native Mobile Apps. Three production apps live on App Store and Google Play. Influencer marketplace, fishing community app and event check-in. Real users, in-app purchases, push notifications and offline-first architecture. As a Full Stack Developer I handle both the mobile frontend and the backend APIs powering it. 𝗠𝘆 𝗦𝘁𝗮𝗰𝗸 Frontend: React, Next.js, TypeScript, JavaScript, Tailwind, Redux, Zustand Backend: Node.js, NestJS, Express, Python, FastAPI AI: Claude Code, ChatGPT, Lovable, Base44, AI Agents, Chatbots and many more APIs: GraphQL, REST, tRPC Databases: PostgreSQL, MongoDB, MySQL, DynamoDB, Redis Cloud: AWS Lambda, S3, ECS, Cognito, Bedrock, Azure, Google Cloud DevOps: Docker, Kubernetes, CI/CD pipelines Mobile: React Native 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 I respond within hours during business days. I send proactive status updates. I flag risks early instead of at the deadline. If something in your spec will cost you money down the line I tell you before we start, not after. No hand-offs, no disappearing after onboarding. Send me your project details and I will come back with a real estimate.

Hello! I’m Megan, a Project Manager associated with the Upwork Agency Sky Systems! Our team has a wide variety of expertise ranging from graphic designers to full-stack developers and back-end developers. We specialize in No-Code and Low-Code platforms, MERN Stack, MEAN Stack, and CMS platforms. Meeting your unique requirements is my top priority.⭐ UX/UI Design, 🛠 CMS Development, 🖥 Frontend Development, 🔧 Backend Development, 💾 Databases, ☁️ Cloud Services, 🧰 Tools Having collaborated with various clients, I understand the significance of clear communication and crafting customized solutions. Let’s meet your expectations by developing visually appealing and highly functional applications. We are committed to leveraging my skills to bring your innovative ideas to life. My process is anchored in collaboration and ensuring that the solutions provided enhance your business operations effectively. ⭐ **UX/UI Design**: Crafting intuitive and visually appealing interfaces using Figma and AdobeXD. 🛠 **CMS Development**: Developing robust websites with WordPress, Shopify, and Webflow. 💻 **Frontend Development**: Building responsive user interfaces with JavaScript, Typescript, HTML5/CSS3, Tailwind CSS, React.JS, React Native (for Mobile Apps), Next.JS, and Nuxt.JS 🖥 **Backend Development**: Creating scalable server-side applications using Node.js, PHP/Laravel, and other technologies. 📚 **Databases**: Managing data with MongoDB, MySQL, and PostgreSQL to ensure efficient data flow. ☁️ **Cloud Services**: Implementing cloud solutions with AWS for enhanced scalability and security. 🧰 **Tools**: Utilizing Git, GitHub, bug trackers, and Jira to maintain code integrity and facilitate project management. Ready to elevate your project? Reach out, and let’s bring your vision to life with unrivaled expertise and a commitment to excellence. Your next successful project starts here! Regards, Megan Sky Systems, Inc.

I fix slow or unstable systems — especially the ones others couldn’t — and make them scale properly. I’m Jan — a Fractional CTO with 25+ years of experience turning ideas into production-ready systems. I don’t just advise — I fix and build. I work with startups and growing companies where things are starting to break — or never worked quite right in the first place. Usually when something has already gone wrong — or needs to scale fast. ⚙️What I help with: - Acting as a Fractional CTO when senior direction is missing - Translating business needs into practical technical solutions - Designing scalable architecture and APIs - Fixing performance and stability issues - Optimizing Linux servers and infrastructure - Refactoring legacy PHP into clean, maintainable code 📍Typical situations I come into: - “Business and tech are not on the same page” - “Things get lost between requirements and implementation” - “We’re not sure what the real problem is” - “It works, but it’s slow or unstable” - “We’re scaling and things are breaking” - “The codebase is a mess and nobody wants to touch it” 🧠How I work? Simple solutions. Real performance. No overengineering. I go from architecture down to code, database, OS, and network — whatever it takes to make it work properly. 📩Most of my work is long-term and under NDA, but I’m happy to take a quick look and tell you honestly what’s going on — and how to fix it. 👉 If you’re not sure what’s wrong, I can usually identify it in one call.

Database Architect & Performance Optimization Specialist | 20+ Years of Experience Hi there 👋 — I’m Mir Ahmad, a database professional with over 19 years of experience helping companies build, migrate, and optimize fast, reliable, and secure database systems. I’ve worked with everything from small startups to enterprise-level systems, improving performance, automating processes, and solving tough data problems that others give up on. My clients trust me to keep their systems running smoothly — whether it’s an on-premises SQL Server, a cloud-based Oracle setup, or a hybrid PostgreSQL deployment. ⚙️ What I Do Best Make slow systems fast again — query tuning, indexing, and execution plan optimization Handle migrations — moving from Oracle ↔ SQL Server ↔ PostgreSQL with zero data loss Manage databases in the cloud — Azure SQL, AWS RDS, and hybrid environments Build ETL pipelines and Power BI reports that turn raw data into insights Set up high availability and disaster recovery (HADR) for 24/7 reliability Automate daily DBA tasks with PowerShell, Bash, or Python 💬 What Clients Say ⭐⭐⭐⭐⭐ “Mir Ahmad is the best SQL admin on Upwork — always delivers, no matter how complex the job.” ⭐⭐⭐⭐⭐ “He migrated and optimized our servers flawlessly. A true professional.” ⭐⭐⭐⭐⭐ “Implemented our disaster recovery plan perfectly — we’ll definitely hire him again.” 🧠 Tech I Work With Databases: Oracle (9i–19c), SQL Server (2000–2019), PostgreSQL, MySQL Cloud Platforms: Azure SQL, AWS RDS, GCP ETL & BI: SSIS, SSRS, Power BI, Azure Data Factory Languages: T-SQL, PL/SQL, PowerShell, Python, Bash Certifications: Microsoft Certified Professional (MCP) If your database is running slow, needs a migration, or just needs a reliable DBA who can take ownership and make things work — I’m here to help. Let’s make your data faster, safer, and smarter 🚀

💡 Let’s Bring AI to Work — Smarter, Faster, and More Human. ⭐ Top-Rated Plus Freelancer ⭐ 100% Job Success on Upwork ⭐ 1,400+ Hours Worked with Excellent Client Reviews ⭐ 10+ Years of Development Experience (AI, Automation, and Web Systems) ⭐ Fluent in English | Fast Response | Long-Term Collaboration Focus 🚀 About Me I help businesses automate operations, enhance customer experiences, and boost efficiency through AI-driven Voice & Chat Agents, workflow automation, and custom AI integrations. With 10+ years in full-stack development and 3+ years focusing on Generative AI, I design and implement intelligent systems that understand, respond, and act not just chat. 🤖 What I Build 🎙️ AI Voice Agents — Outbound & Inbound Voice Systems that can: ✔ Make sales or booking calls ✔ Handle reschedules and follow-ups automatically ✔ Integrate with CRMs and calendars (Zoho, HubSpot, Google, etc.) ✔ Detect voicemail and send follow-up SMS or WhatsApp messages 💬 AI Chat Agents (GPT-4, Claude, Gemini, Rasa, Dialogflow) ✔ Customer support and lead qualification bots ✔ Knowledge-based Q&A assistants ✔ Multilingual conversational agents ✔ Web, WhatsApp, or Messenger integrations ⚙️ AI Workflow & Automation Systems ✔ Custom automation using N8n, Make (Integromat), or Zapier ✔ API-driven integrations between CRMs, payment systems, and chatbots ✔ AI tools for report generation, scheduling, and data enrichment 🔧 Tech Stack & Tools ✔ Languages: Node.js, Python, PHP, Laravel, TypeScript, Vue.js, React.js ✔ AI Platforms: OpenAI (GPT-4), Anthropic Claude, ElevenLabs, Whisper, LangChain ✔ Automation: N8n, Make (Integromat), Zapier, Google Cloud Functions ✔ Voice & Speech Tech: Twilio, AssemblyAI, Speechmatics, Azure Cognitive ✔ Databases: PostgreSQL, MySQL, MongoDB ✔ Integrations: Zoho, HubSpot, Salesforce, WhatsApp Cloud API, Slack, Google Calendar 🤝 Why Clients Work With Me ✅ 10+ years of proven software experience with strong AI integration background ✅ Fast communication & detailed project reporting ✅ Strategic approach — not just coding, but building scalable AI workflows ✅ Transparent estimates and reliable delivery 🌍 Recent Projects ✅ Outbound AI Voice Agent for appointment booking and reminders ✅ ChatGPT-powered customer support bot for healthcare platform ✅ Workflow automation linking CRM, WhatsApp, and AI analytics ✅ GPT-based policy assistant for internal documentation and HR FAQs 🙌 Let’s Build the Future of AI Together If you’re looking to automate processes, scale customer communication, or deploy AI voice/chat agents that deliver real business value, let’s connect and make it happen.

✅ 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