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Kaushal M.
$20/hr
100% Job Success
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Top Rated Software Solution Architect | Web & Mobile Apps | Cybersecurity | Cloud Optimization With 15+ years of experience, I help businesses design, build, and scale reliable software solutions. My expertise spans PHP web development, API integrations, and custom web portals, along with React Native and hybrid mobile apps. Beyond development, I bring strong cybersecurity skills—including Vulnerability Assessment and Penetration Testing (VAPT)—ensuring your applications are not only functional but also secure. Key Highlights: AI & Automation: Implementing AI models and integrating GPT into real workflows. Cloud & Infrastructure: Hands-on with AWS, DigitalOcean, Google Cloud, and VPS servers—optimizing cost, performance, and scalability. High-Traffic Systems: Built and managed platforms handling 1M+ transactions in just 12 hours, with proven scaling strategies. Health & Wellness Platforms: Experienced in HIPAA compliance for U.S. healthcare projects. Agile Delivery: Certified Scrum Master, working in two-week sprints for efficient and transparent project execution. I specialize in creating secure, scalable, and high-performance software ecosystems—from web portals to mobile apps—while keeping business goals at the center. If you’re looking for a partner who understands technology, security, and growth, let’s connect.
Bytespark Digital
Associated with
Bytespark Digital
Marina P.
$45/hr
100% Job Success
$700K+ earned
Available now
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🚀 The Top 3% of Talent in Mobile & AI-Powered Product Development 🤖 AI-Driven Mobile Engineer Building Apps That Scale Beyond MVP ⚡ AI-Assisted Engineering for Faster Delivery & Higher Product Quality 👉 WHAT YOU GET ✔️ Full Stack Mobile Developer - 22+ years experience, 2000+ builds, $700K+ client impact, end-to-end development ownership. ✔️ React Native Mobile App & Flutter Developer - 100+ interfaces, 18–27% user engagement lift, clarity and ultimate trust. ✔️ Mobile Application Developer - 30–40% faster launch cycles, cleaner UI/UX, stronger user retention across SaaS Mobile App ecosystems. 👉 ACHIEVEMENTS ✔️ 22+ years, 40,000+ hours, 2000+ products delivered as a full stack mobile developer, mobile app developer, and senior full stack developer ai and mobile application developer workflows. ✔️ $700K+ client impact, $900K+ direct revenue, 200+ successful MVPs, £11M annual business volume generated as a top-performing mobile app development expert. ✔️ 100,000+ active users where a custom react native mobile app developer execution lifted repeat engagement by 27% on a popular festival companion app. ✔️ 10,000+ users in Healthcare Platform and HIPAA-compliant systems where mobile application developer architecture cut clinical data friction by 40% using an intuitive doctor directory website interface. ✔️ 2,423 completed mobile orders, 34% faster handling in E-commerce Marketplace App and Fintech Platform deployments as a full stack developer. ✔️ 90% faster background sync, 80% lower crash workload, 65% fewer endpoint errors through API Integration, automated Stripe integration, and Flutter developer performance fixes. ✔️ 5–8 weeks shorter Startup MVP to Pilot Launch, 35% fewer critical production bugs through legacy code refactoring and clean continuous development pipelines. 👉 WHERE I DELIVER ✔️ As a mobile app developer - 200+ systems with pixel-perfect mobile app design, automated push notifications, and UI/UX design and development across SaaS Mobile App and Enterprise Mobile App architectures. ✔️ As an experienced mobile app developer - 15+ years of cross-platform engineering, delivering 30–40% faster iteration cycles for teams that need both iOS and Android apps from scratch. ✔️ As a full stack developer - 50+ end-to-end mobile + web platform setups with secure Node.js backend architecture, REST API deployment, and database scaling from Early-Stage MVP to live production. ✔️ As a react native mobile app specialist - building responsive mobile app react native mobile components for cross-platform app deployment, ensuring native-like feel across both iOS and Android. ✔️ As an AI App developer & AI Developer - leveraging cutting-edge ai platform development, ai development, and ai mobile development to build smart assistants, audio transcription apps, and image/vision processing products. ✔️ As a backend developer and javascript developer - writing highly maintainable server code in Node.js, Express, NestJS, and PHP (Laravel) with robust database integration via MongoDB, PostgreSQL, and Firebase/Supabase. ✔️ As a full stack mobile developer - driving ongoing support and maintenance, optimizing systems to fix bugs and improve performance with a dedicated team mindset. 👉 INDUSTRY IMPACT ✔️ Marketplace App & E-commerce - thousands of item listings, 20%+ higher checkout conversion as a mobile application developer and full stack developer. ✔️ Healthcare Platform & Telehealth - clinic workflows, 25%+ better data processing security as a senior mobile app developer. ✔️ AI Mobile App & AI Platform Development - OpenAI & Claude API smart integrations, automated recommendations, and custom conversational interfaces as an AI App developer. ✔️ Fintech Platform & SaaS Mobile App - secure in-app purchases, mobile subscriptions, multi-role access control, and seamless Stripe payment integrations. ✔️ Enterprise Mobile App & Workflow Automation - customized real-time chat, location-tracking (GPS/Google Maps), and mobile app + admin panel management tools. 👉 HOW I BUILD ✔️ 22+ years as a mobile app developer: built with cross-platform and native ecosystems using Swift, Kotlin, Java, Flutter, React Native, and native app infrastructure optimized for smartphone form factors. ✔️ 15+ systems as a full stack developer: powered by Node.js, Express, NestJS, PHP (Laravel), TypeScript, REST API protocols, GraphQL, Firebase, Supabase, Firestore, PostgreSQL, and MongoDB. ✔️ 40+ products engineered with a dedicated team mindset: utilizing clean Git version control, secure AWS cloud envicloud environments, Docker containers, and rigorous usability testing to publish app to App Store and Google Play smoothly. Looking for an elite Senior Mobile & Full Stack Developer who can build an app from scratch, create a mobile application with premium UX, or handle complex product development for long-term collaboration? Let's connect! Send an invite and let’s talk about your project goals. ☎️
Marina P. has worked .
Onix-Systems, LLC
Associated with
Onix-Systems, LLC
$30M+
earned
$30/hr
100% Job Success
$7K+ earned
Offers consultations
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I am a Skilled AI Engineer and Full-Stack Developer with strong expertise in Python, AI automation, and modern web development. I specialize in building intelligent, scalable solutions that help businesses automate workflows, improve decision-making, and deliver powerful AI-driven user experiences. My focus is always on creating production-ready systems that are efficient, reliable, and aligned with real business goals. I work extensively with OpenAI APIs, LangChain, and Retrieval Augmented Generation (RAG) to develop AI chatbots and knowledge-based systems that provide accurate, context-aware responses using your own data. Whether it’s documents, PDFs, websites, or databases, I design RAG pipelines that ensure AI answers are grounded, relevant, and trustworthy rather than generic. I also develop AI agents and custom workflows that automate complex tasks and processes. On the backend, I use Python, Django, and Node.js to build secure, scalable APIs and services. I have solid experience integrating AI models into backend systems, handling authentication, data processing, and performance optimization. For automation and data extraction, I create Python scripts, bots, and web scrapers that save time, reduce manual work, and increase operational efficiency. On the frontend, I develop clean and responsive interfaces using React, delivering modern user experiences for AI dashboards, admin panels, and full-stack applications. I’m comfortable working across the entire stack, connecting frontend applications with powerful AI-driven backends to create seamless end-to-end solutions. I bring a strong understanding of machine learning, artificial intelligence, automation, and web development, combined with clear communication and a problem-solving mindset. Clients value my ability to translate complex technical ideas into practical solutions that deliver real results. If you’re looking for an AI engineer who can build smart systems, automate your workflows, or develop a full-stack AI application, I’d be happy to help. 💡 Why Clients Choose My Full-Stack Development Services Clients choose my full-stack development services for proven expertise in React, Node.js, Python, AI/ML, and Automation. I don’t rely on generic solutions—every application is architected from scratch to align with business goals, data needs, and future scalability. My focus on performance, automation, and intelligent systems ensures that every project delivers real-world impact. From React-powered interfaces and Node.js APIs to Python-driven AI/ML and automation solutions, I bring precision, innovation, and deep technical expertise to every build. Let’s collaborate to create a React, Node, Python, AI/ML, and Automation-powered full-stack solution that drives efficiency, innovation, and measurable business results.
Zain A. has worked .
Hassaan Z.
$30/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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⭐Top Rated Plus | Top 3% Globally on Upwork in Full Stack SaaS and AI Development. If you shoot me a invitation or direct message i'll send you a personalized loom video back on how i may be able to help you! Your AI SaaS works in the demo, then breaks the moment real users hit it. I build production ready web applications and Full Stack SaaS platforms that don't, the kind running production right now, moving 10,000+ messages a day at 99% delivery and saving one client $200k+ a year. From AI automation and RAG systems that don't hallucinate to scalable backend systems, multitenant architectures and secure enterprise software,I build products that stay reliable as they grow. And where it matters most, in regulated healthcare and fintech, that's the work I'm known for. Over the last 10+ years, I've delivered Full Stack Development FinTech, Health Tech, HR Tech and Ed Tech, designing and delivering SaaS Development projects, AI-powered applications, MVP Development, workflow automation systems, cloud-native applications and enterprise platforms. As a Top Rated Plus on Upwork with 1000+ billed hours and a consistent 5 star track record, I focus on building systems and products that remain reliable as your user base grows. WHAT MAKES ME DIFFERENT: Most developers focus on delivering features. I focus on delivering systems that can operate in production. Before writing code, I help founders and product teams make the right technical architecture, system architecture, scalability, AI integration, compliance, infrastructure and long term maintainability decisions. My focus is delivering scalable architecture and production ready software rather than simply shipping features. Whether you're launching MVP, modernizing a legacy web application, building an AI SaaS platform, creating a new software product, or integrating AI into existing business, I help define the technical roadmap and execute the entire product development lifecycle. My work frequently involves: • AI native SaaS products, SaaS Development, multi- tenant platforms • AI Agents, AI Voice Agents, AI Automation • Retrieval-Augmented Generation (RAG) systems, knowledge assistants, LLM applications • Healthcare SaaS & HIPAA-compliant web applications • Fintech platforms & payment systems • Enterprise API Development & API Integration • Cloud Infrastructure, DevOps & Backend Development What Client Says: "This developer did an outstanding job and exceeded our expectations in every way. They quickly became a lead developer, taking ownership of complex requirements and delivering high-quality, well-structured work consistently." "Very responsive, professional, and communicative. Will be working with them again soon!" WHAT I BUILD FOR YOU: → AI-powered SaaS platforms, Full Stack Web Applications, startup MVPs, MVP Development, multi-tenant SaaS applications, enterprise software, Stripe billing, RBAC, ABAC, audit logs, row-level security. → AI Agents, AI Voice Agents, AI Automation, RAG systems, knowledge assistants, AI copilots, custom LLM workflows. → Full-Stack Web Applications Development using Next.js, React, TypeScript, Node.js, Python, FastAPI, scalable backend systems and cloud-native architectures → Healthcare SaaS solutions including HIPAA-compliant web applications, patient engagement systems, secure healthcare workflows, and enterprise software. → FinTech software products including payment systems, subscription platforms, financial dashboards, transaction processing and compliance-focused architecture. → API Development, Backend Development and API Integration with OpenAI, Stripe, Twilio, HubSpot, Salesforce, CRMs, ERPs and third-party SaaS platforms. → Workflow Automation using n8n, AI-powered business processes, customer support automation, onboarding automation, and sales automation → Cloud Infrastructure, AWS deployments, Docker, CI/CD pipelines, monitoring, production rollouts, and scalable backend systems CORE STACK & KEYWORDS: Full Stack Development, Web Application Development, SaaS Development, AI SaaS, Platform Development, Technical Architecture, System Architecture, Database Architecture, Backend Development, Software Architecture, Scalable Architecture, Enterprise Software, Cloud Infratructure, Product Development, Next.js, React, TypeScript, Node.js, Nest.js, Python, FastAPI, Django • Open AI, GPT-4, Claude, Gemini, LangChain, LangGraph, AI Agents, AI Voice Agents, RAG, Vector Database, pgvector, Pinegone • PostgreSQL, Supabase, MongoDB, Redis, Firebase • AWS, Docker, Kubernetes, CI/CD • Stripe, Twilio, HubSpot, Salesforce, • Multi-tenant SaaS, MVP Development, SaaS Architecture, Workflow Automation, HIPAA, SOC2, PCI-DSS, OAuth2, RBAC, ABAC, Row Level Security
Hassaan Z. has worked .
Tensor Labs
Associated with
Tensor Labs
JASMEEN V.
$10/hr
100% Job Success
Available now
Offers consultations
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𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐛𝐲 𝐆𝐥𝐨𝐛𝐚𝐥 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 | 𝟕+ 𝐘𝐞𝐚𝐫𝐬 𝐢𝐧 𝐀𝐈-𝐃𝐫𝐢𝐯𝐞𝐧 𝐖𝐞𝐛, 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 | 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐭𝐨 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞, 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 𝐭𝐨 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 I am a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 focused on building 𝐀𝐈-𝐝𝐫𝐢𝐯𝐞𝐧 𝐰𝐞𝐛 & 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 that are scalable, secure, and production-ready. I work across the entire product lifecycle — from 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 and UI planning to frontend development, backend systems, cloud deployment, and CI/CD automation. My focus is not just writing code, but delivering systems that perform reliably, scale efficiently, and support long-term business growth. Over the last 7+ years, I’ve worked with startups, SaaS products, and growing businesses to develop custom platforms, dashboards, internal tools, and business-critical applications. I typically act as the 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐨𝐰𝐧𝐞𝐫, ensuring clean execution, consistent architecture, and clear communication. For larger scopes, I help structure development, guide implementation, and coordinate execution while remaining your single point of contact. 🎨 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 (𝐔𝐈, 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 & 𝐔𝐗) – React.js & Next.js (SPA, SSR, scalable UI architecture) – React Native for cross-platform mobile applications android & IOS – HTML5, CSS3, Bootstrap, Tailwind CSS – Component-based UI systems & reusable design patterns – Responsive, mobile-first, cross-browser development – UI/UX implementation from Figma & Adobe XD – Frontend performance optimization & accessibility best practices ⚙️ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝, 𝐀𝐏𝐈𝐬 & 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐋𝐨𝐠𝐢𝐜 – Laravel (PHP), WordPress, Codeignitor for scalable backend systems – Node.js for APIs and real-time services – RESTful APIs & third-party integrations – Authentication, authorization & role-based access control – Payment gateways, notifications & background processing – Databases: MySQL, PostgreSQL, MongoDB – Push notifications & messaging (Firebase, email, system alerts) 🔁 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧, 𝐀𝐈 & 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 – Business process automation using n8n and custom workflows – API-driven integrations between internal systems and third-party tools – Automation and data synchronization with CRM platforms (Zoho, HubSpot, Salesforce) – AI-assisted workflows for data processing, notifications, and decision support – Event-based automation, scheduled jobs, and background tasks – Integration with ERPs, marketing tools, analytics platforms, and internal business systems ☁️ 𝐂𝐥𝐨𝐮𝐝, 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 – AWS (EC2, S3, RDS, Route53, IAM, Lambda) – Docker & environment-based deployments – CI/CD pipelines (GitHub Actions, GitLab CI) – Nginx reverse proxy & server optimization – Secure deployments & infrastructure best practices 🏭 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐒𝐞𝐫𝐯𝐞𝐝 – Healthcare & HealthTech – Travel & Hospitality – Education & EdTech – E-commerce & Marketplaces – Banking, FinTech & Financial Services – Manufacturing & Industrial Automation – Media & Entertainment – Retail, Energy & Utilities – Communications & Telecom – Transportation, Logistics & Fleet Management – Mining, Metals & Natural Resources – Oil, Gas & Energy Systems – Construction & Infrastructure – Real Estate & PropTech – Enterprise SaaS & Internal Business Systems 📌 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐄𝐱𝐩𝐞𝐜𝐭 – Clean, maintainable, and scalable code – Architecture-first development mindset – Clear communication for technical & non-technical stakeholders – Flexible engagement based on scope and timeline – Long-term support mindset, not just task delivery If you’re looking for someone who can 𝐛𝐮𝐢𝐥𝐝, 𝐠𝐮𝐢𝐝𝐞, 𝐚𝐧𝐝 𝐦𝐚𝐧𝐚𝐠𝐞 𝐦𝐨𝐝𝐞𝐫𝐧 𝐰𝐞𝐛 𝐨𝐫 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 from 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 𝐭𝐨 𝐝𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭, I’m happy to review your requirements and suggest the best technical approach. 📩 𝐅𝐞𝐞𝐥 𝐟𝐫𝐞𝐞 𝐭𝐨 𝐫𝐞𝐚𝐜𝐡 𝐨𝐮𝐭 𝐭𝐨 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭.
JASMEEN V. has worked .
Muhammad M.
$25/hr
100% Job Success
$70K+ earned
Available now
Offers consultations
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𝐘𝐨𝐮 𝐚𝐫𝐞 𝐭𝐡𝐞 𝐯𝐢𝐬𝐢𝐨𝐧𝐚𝐫𝐲. 𝐈'𝐦 𝐭𝐡𝐞 𝐜𝐫𝐞𝐚𝐭𝐨𝐫. 𝐋𝐞𝐭'𝐬 𝐝𝐨 𝐬𝐨𝐦𝐞 𝐦𝐚𝐠𝐢𝐜 𝐭𝐨𝐠𝐞𝐭𝐡𝐞𝐫. 𝐔𝐧𝐥𝐨𝐜𝐤 𝐭𝐡𝐞 𝐩𝐨𝐭𝐞𝐧𝐭𝐢𝐚𝐥 𝐨𝐟 𝐲𝐨𝐮𝐫 𝐯𝐢𝐬𝐢𝐨𝐧 𝐰𝐢𝐭𝐡 𝐚 𝐟𝐮𝐥𝐥 𝐬𝐭𝐚𝐜𝐤 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐡𝐨 𝐜𝐨𝐦𝐛𝐢𝐧𝐞𝐬 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐰𝐢𝐭𝐡 𝐚 𝐩𝐚𝐬𝐬𝐢𝐨𝐧 𝐟𝐨𝐫 𝐢𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐨𝐧, 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐢𝐧𝐠 𝐫𝐞𝐬𝐮𝐥𝐭𝐬 𝐭𝐡𝐚𝐭 𝐝𝐫𝐢𝐯𝐞 𝐬𝐮𝐜𝐜𝐞𝐬𝐬. I’m a 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with 10+ years of experience building modern and high-performing web applications. As a Full Stack and SaaS Developer, I specialize in Full Stack Development, SaaS applications, Custom Website Development, CRM systems, and business web solutions. With strong experience in React.js, Node.js, PHP, Laravel, TypeScript, API Integration, and Database Development. 🏆 𝟏𝟎+ years as a Full Stack Developer 📊 $𝟕𝟎𝐊+ earned on Upwork across 𝟏𝟑𝟔 Full Stack Developer projects 🎯 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 with 𝟏𝟎𝟎% Job Success Score ⚡ 𝟭𝟬𝟬+ production builds as lead Full Stack Developer 🌟𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 💠 Custom Website Development 💠 Custom Web Application Development 💠 SaaS Development 💠 CRM Development 💠 API Development & Integration 💠 Admin Dashboard Development 💠 eCommerce Website Development 💠 Delivery Web Development 💠 Booking & Scheduling Systems 💠 Database Development 💠 Startup MVP Development 💠 Full-Stack Development 💠 Website Maintenance & Optimization If you need a reliable Full Stack Developer who can design architecture, build scalable systems, and integrate AI or APIs into your product, feel free to contact me. 🚀 𝐅𝐫𝐨𝐧𝐭 𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 | 𝐍𝐞𝐱𝐭.𝐣𝐬 | 𝐓𝐚𝐢𝐥𝐰𝐢𝐧𝐝 𝐂𝐒𝐒 | 𝐒𝐡𝐚𝐝𝐜𝐧/𝐔𝐈 | 𝐁𝐨𝐨𝐭𝐬𝐭𝐫𝐚𝐩 | 𝐇𝐓𝐌𝐋𝟓 | 𝐂𝐒𝐒𝟑 | 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 💠 Responsive, mobile-first websites and web applications 💠 SEO-friendly, fast, and performance-optimized solutions 💠 Clean, scalable, and user-friendly UI/UX design ⚙️ 𝐁𝐚𝐜𝐤 𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐍𝐨𝐝𝐞.𝐣𝐬 | 𝐄𝐱𝐩𝐫𝐞𝐬𝐬.𝐣𝐬 | 𝐋𝐚𝐫𝐚𝐯𝐞𝐥 | 𝐏𝐇𝐏 💠 Backend Architecture & Development 💠 RESTful API Development & Integration 💠 Secure Authentication & Role-Based Access Control 💠 Scalable and Maintainable Backend Systems 💠 Server-Side Optimization & Application Security 🗄️ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 𝐌𝐨𝐧𝐠𝐨𝐃𝐁 | 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋 | 𝐌𝐲𝐒𝐐𝐋 | 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞 | 𝐑𝐞𝐝𝐢𝐬 💠Database design & schema modeling 💠Optimized queries for high performance 💠Secure data handling 💠Scalable data architecture 🔌 𝐀𝐏𝐈 & 𝐓𝐡𝐢𝐫𝐝 𝐏𝐚𝐫𝐭𝐲 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 𝐒𝐭𝐫𝐢𝐩𝐞 | 𝐏𝐚𝐲𝐏𝐚𝐥 | 𝐎𝐩𝐞𝐧𝐀𝐈 | 𝐆𝐨𝐨𝐠𝐥𝐞 𝐌𝐚𝐩𝐬 | 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞 💠 Secure API Integration 💠 Third-Party Service Integration 💠 Payment Gateway Integration 💠 SaaS Platform Integration 💠 Automation & AI-Powered Features ☁️ 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 𝐆𝐢𝐭 | 𝐆𝐢𝐭𝐇𝐮𝐛 | 𝐃𝐨𝐜𝐤𝐞𝐫 | 𝐍𝐠𝐢𝐧𝐱 | 𝐀𝐖𝐒 | 𝐕𝐏𝐒 💠 Secure Server Configuration 💠 Scalable Production Environments 💠 CI/CD Pipelines & Zero-Downtime Deployments 💠 Version Control & Efficient Development Workflows 🤖 𝐀𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐋𝐋𝐌 | 𝐎𝐩𝐞𝐧𝐀𝐈 | 𝐆𝐞𝐦𝐢𝐧𝐢 | 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭 | 𝐂𝐡𝐚𝐭𝐛𝐨𝐭 | 𝐅𝐚𝐬𝐭𝐀𝐏𝐈 | 𝐊𝐍𝐍 | 𝐌𝐨𝐝𝐞𝐥 𝐓𝐫𝐚𝐢𝐧 | 𝐑𝐚𝐠 💠AI-powered backend systems 💠Chatbots, AI agents, and LLM-based features 💠OpenAI & Gemini integrations 💠FastAPI for AI and data-driven services 💠Intelligent automation and backend logic 🏢 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐇𝐚𝐯𝐞 𝐖𝐨𝐫𝐤𝐞𝐝 𝐖𝐢𝐭𝐡 ▸ SaaS & Software Platforms ▸ E-commerce & Marketplace ▸ Healthcare & Wellness ▸ Finance & FinTech ▸ Real Estate ▸ Education & E-Learning ▸ CRM & Business Management Systems ▸ Logistics & Supply Chain ▸ Social Media & Communities ▸ Travel & Hospitality 🤝 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 💠 Top-Rated Full Stack Developer on Upwork 💠 Clear Communication & Reliable Project Delivery 💠 Clean, Scalable, and Maintainable Code 💠 Long-Term Support & Business-Focused Solutions 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐘𝐨𝐮𝐫 𝐍𝐞𝐱𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 📩 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗺𝗼𝘃𝗲? Send your job details, and we’ll reply with a scoped plan within 1 hour. Looking for a Full Stack Developer who ships? Let’s talk.
Muhammad M. has worked .
Alina S.
$35/hr
100% Job Success
$40K+ earned
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👋 Hi there, I'm Alina! I'm a Full Stack Developer, web developer, and mobile app developer with 9+ years of commercial experience in software engineering, helping companies build scalable, secure, and high-performing digital products. My work follows ISO 9001 and ISO 27001 security standards, ensuring enterprise-level reliability. With 180+ successful projects and 20,000+ development hours, I specialize in complex Web and Mobile Application development, AI integrations, and cloud architecture. As a dedicated Full Stack Developer and Python Full Stack Developer, I help businesses automate workflows, optimize performance, and scale products using React, Node.js, Python, and AWS. Whether you need a skilled react developer or a versatile wordpress developer, I bring the technical expertise to deliver reliable systems. 🏆 Web Developer & Full Stack Developer Solutions: ✔️ 9+ years of experience as a Full Stack Developer building scalable web platforms, SaaS products, and AI-driven applications. ✔️ 180+ high-performance projects across eCommerce, SaaS, healthcare, fintech, and enterprise systems delivered as a Full Stack Developer AI specialist. ✔️ 20,000+ engineering hours as a Full Stack Developer, software engineer, and AI integrator. ✔️ Global experience across 40+ countries including the US, UK, Western Europe, and Australia. ✔️ Development speed increased by 60–70% using AI-assisted engineering workflows. ✔️ Backend and database optimization improving performance by up to 60%. ✔️ AI automation systems reducing manual operational work by up to 85%. ✔️ Cloud infrastructure improvements enabling 45% more concurrent users with reduced AWS costs. 📌 AI Systems & Automation: 🔹 Custom LLM and RAG architectures built with Python, LangChain, and vector databases by a Python Full Stack Developer. 🔹 AI chatbots and automation agents improving operational efficiency for SaaS and enterprise systems, delivered by a Full Stack Developer AI. 🔹 AI-assisted QA workflows reducing manual testing costs by 70%. 🔹 Model-agnostic LLM routing using OpenAI, Claude, and Gemini. 📌 Custom Web Development: 🔹 SaaS platforms built with Next.js, React, Node.js, and NestJS by an expert react developer and Full Stack Developer. 🔹 Secure web applications designed by an experienced web developer following ISO security standards. 🔹 Rapid MVP development using AI-first engineering approaches. 🔹 Custom CMS and scalable platforms implemented by a skilled wordpress developer. 📌 Backend Architecture & Cloud Infrastructure: 🔹 High-performance cloud architecture using AWS, Docker, and modern DevOps practices. 🔹 Database optimization with PostgreSQL and Supabase improving query speeds by 60%. 🔹 Microservices and CI/CD pipelines increasing system scalability. 🔹 Automated billing and internal automation systems built by a Python Full Stack Developer. 📌 Mobile & Cross-Platform Applications: 🔹 Cross-platform mobile applications using React Native and Flutter. 🔹 Backend-to-mobile data synchronization reducing latency and improving UX. 🔹 AI-powered recommendations and secure payment integrations. 📌 Scalable Architecture & System Optimization: 🔹 High-availability cloud infrastructure for scalable applications. 🔹 Advanced dashboards and admin panels using React, Tailwind, and modern UI frameworks. 🔹 Server-side rendering and caching strategies improving performance and scalability. ✅ 60–70% faster development through AI-assisted engineering workflows. ✅ ISO 9001 & ISO 27001 aligned development standards. ✅ 30% lower server costs through optimized backend architecture. ✅ Advanced AI integrations (GPT, Claude, LangChain) delivered by a Full Stack Developer AI. ✅ Rapid MVP delivery in 2–3 months by an experienced Full Stack Developer, react developer, and web developer. Looking for a Full Stack Developer | Full Stack Developer AI | Python Full Stack Developer who can design scalable systems, build reliable architecture, and turn ideas into production-ready products? Let’s connect! ☎️ 22.06.2026
HyggeSoftware Ou
Associated with
HyggeSoftware Ou
$200K+
earned
Sachin C.
$20/hr
98% Job Success
$20K+ earned
Available now
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I’m a Senior Full-Stack Developer with 10+ years of experience building scalable, secure, and high-performance web and mobile applications for startups, SMEs, and enterprise clients. My core tech stack includes React.js, Node.js, Next.js, Nuxt.js, Laravel, and React Native, backed by strong expertise in RESTful APIs, cloud deployment, database design, and modern UI/UX implementation. I specialize in end-to-end application development, from architecting robust backend systems and APIs to building responsive, SEO-friendly frontends that deliver exceptional user experiences across web and mobile platforms. Whether you're launching a SaaS product, developing a custom web application, creating a mobile app, or modernizing a legacy system, I focus on delivering clean, maintainable code and scalable solutions that align with your business goals. My approach combines technical expertise with product thinking to help you build faster, scale confidently, and create lasting value. ce with practical product insight to help you deliver faster, smarter, and more scalable solutions. ✅ My Services Full Stack Web and Mobile App Development (React, Node.js, Nuxt.js, Next.js, Laravel and React Native ) API Development & Integration (REST, GraphQL) Database Design & Optimization (MySQL, PostgreSQL, MongoDB) Cloud Deployment (AWS, Docker, CI/CD, Firebase) Responsive Frontend Design (HTML5, CSS3, Tailwind, Bootstrap) SaaS Development, MVP Builds, and Scalable System Architecture Performance Optimization, Security, and Maintenance ✅ My Approach I focus on more than just writing clean code, I build solutions that scale, drive conversions, and support your business growth. Here's how I work: I deliver clean, modular, and maintainable code through agile sprints with clear deliverables and regular progress updates. My focus is on building performance-optimized, mobile-first applications, making user-centered design decisions that boost conversions, all within a future-proof architecture built for growth. I also bring experience working on AI-powered apps, including chatbots, recommendation engines, and automation tools using GPT and other LLMs, helping businesses deliver smarter, faster user experiences. ✅ Communication & Collaboration : I maintain strong availability with US/EU timezone overlap and provide regular progress updates, whether daily or weekly as needed. I keep workflows organized using tools like Trello, Jira, Notion, and Git, and offer proactive input and suggestions to continually improve your product and process. Whether I'm leading development or integrating into an existing team, I prioritize reliability, responsiveness, and transparency at every stage. ✅ Recent Projects: 1. Trip Planning Website (React+ Node ): Personalized itineraries & real-time data integration 2. AI Budgeting App (GPT + Plaid): LLM-powered insights with real-time data 3. Mobile Backend (Node + Firebase): Sync, push notifications, and APIs 4. Admin Panel (Laravel + Livewire): Reporting tools and internal workflows If you’re building something ambitious, a SaaS app, marketplace, AI-powered tool, or need to bring clarity to a complex codebas, I’m here to help you ship faster, scale smarter, and deliver real value to your users. Let’s talk about your project and turn your idea into a product that works hard for your business.
Matrix Marketers
Associated with
Matrix Marketers
$4M+
earned
$30/hr
74% Job Success
$300K+ earned
Available now
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🏆 Top Rated Plus | $300K+ Earned | 100% Job Success | 18+ Years Experience I'm Amir, a Full-Stack Developer who builds scalable, production-ready web applications using Next.js, React, and MongoDB, with AI and automation baked in where it drives real business results. I don't just ship code. I ship products that make money, save time, and scale. ✅ WHAT I BUILD 🔹 Full-Stack Web Applications (Next.js, React, Node.js, MongoDB) 🔹 AI-Powered SaaS Platforms (OpenAI, Claude, RAG, LangChain) 🔹 Shopify Apps & E-commerce Integrations 🔹 Trading Platforms & FinTech Dashboards 🔹 Custom APIs & Third-Party Integrations (Stripe, Twilio, HubSpot) 🔹 Workflow Automations (Zapier, Make, n8n) 🔹 MongoDB Architecture, Migrations & Optimization 🔹 MVP Development for Startups & Founders 💼 RECENT PROJECT HIGHLIGHTS ✅ Built a real-time trading platform UI with complex charting & live data streaming, handled thousands of concurrent users ✅ Architected & executed a large-scale MongoDB migration for a SaaS platform without downtime, improving query performance by 40% ✅ Developed Shopify apps and custom integrations that automated inventory, orders, and customer flows for e-commerce brands ✅ Integrated OpenAI-powered features (chat, search, recommendations) into production web apps used by real customers daily 🛠️ CORE TECH STACK Frontend: Next.js, React, TypeScript, Tailwind CSS, Redux Backend: Node.js, Express, FastAPI, Python, REST, GraphQL Database: MongoDB, Mongoose, PostgreSQL, Supabase, Firebase AI & LLMs: OpenAI, Claude, LangChain, RAG, Vector DBs, Pinecone Automation: Zapier, Make, n8n, Custom Workflow Engines E-commerce: Shopify API, Shopify Apps, Stripe, WooCommerce DevOps: Vercel, AWS, Docker, Git, CI/CD, GitHub Actions Integrations: Stripe, Twilio, HubSpot, Salesforce, OpenAI API, Webhooks 🌟 WHY CLIENTS RE-HIRE ME 🔹 Top 1% on Upwork, 100% Job Success across 100+ projects 🔹 I write clean, maintainable, well-documented code 🔹 I communicate proactively, no ghosting, no surprises 🔹 I own outcomes, not just tasks 🔹 I ship on time, or I tell you early if something changes 🔹 I speak business, not just code, I understand ROI 👥 WHO I WORK BEST WITH ✅ Startup founders building MVPs and V1 products ✅ SaaS companies scaling AI features into existing platforms ✅ E-commerce brands needing custom Shopify apps or automations ✅ FinTech / trading companies building real-time dashboards ✅ Agencies needing a reliable senior developer for client projects 🚀 MY PROCESS 1️⃣ Discovery Call - I understand your goals, users, and constraints 2️⃣ Clear Proposal - Scope, timeline, milestones, honest pricing 3️⃣ Rapid Development - Weekly demos, daily updates, no black boxes 4️⃣ Production Launch - Tested, documented, ready to scale 5️⃣ Post-Launch Support - I don't disappear after delivery 📩 LET'S TALK If you're building something serious and want a senior developer who genuinely cares about your outcome, let's talk. Send me a message with: 1. What you're building (or what's broken) 2. Your timeline & rough budget 3. Any relevant docs, links, or designs I respond within a few hours with a clear plan and honest assessment of whether I'm the right fit. Looking forward to building something great together.
Amir K. has worked .
PureLogics
Associated with
PureLogics
Sumit G.
$15/hr
100% Job Success
$3K+ earned
Offers consultations
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𝐓𝐎𝐏 𝐑𝐀𝐓𝐄𝐃 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗧𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺𝗶𝗻𝗴 𝗜𝗱𝗲𝗮𝘀 𝗶𝗻𝘁𝗼 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝘁 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽𝘀 Hello! I am Sumit, a highly skilled Full-Stack AI Developer with 10 years of experience in building innovative web and mobile applications, AI-powered chatbots, and scalable e-commerce platforms. I specialize in blending cutting-edge AI technologies with seamless user experiences to create smart, efficient, and future-proof solutions. 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗗𝗼 𝗙𝗼𝗿 𝗬𝗼𝘂: → 𝗔𝗜-𝗣𝗼𝘄𝗲𝗿𝗲𝗱 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽𝘀: Using machine learning, deep learning, and natural language processing (NLP), I develop apps that are intelligent, adaptive, and user-focused. → 𝗔𝗜 𝗖𝗵𝗮𝘁𝗯𝗼𝘁𝘀: Build smart, conversational bots for customer service, sales, and support, leveraging frameworks like Dialogflow, Rasa, and custom ML models. → 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: From storefront to checkout, I develop full-stack e-commerce platforms with integrated AI for product recommendations, dynamic pricing, and personalized user experiences. → 𝗖𝘂𝘀𝘁𝗼𝗺 𝗔𝗜 𝗠𝗼𝗱𝗲𝗹𝘀 & 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺𝘀: Tailor-made AI solutions to solve specific business problems, from predictive analytics to real-time decision-making. 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: → 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: Python, JavaScript, TypeScript, Java, PHP, HTML5, CSS3 → 𝗔𝗜 & 𝗠𝗟 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: TensorFlow, PyTorch, Keras, Scikit-learn, OpenCV, GPT, BERT → 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Node.js, Django, Flask, Express.js, Ruby on Rails → 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: React.js, Vue.js, Angular, Next.js → 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: React Native, Flutter, Swift, Kotlin → 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL, MySQL, MongoDB, Firebase, GraphQL → 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: Shopify, WooCommerce, Magento, Custom Solutions → 𝗖𝗵𝗮𝘁𝗯𝗼𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Dialogflow, Rasa, Microsoft Bot Framework, Custom NLP 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲? → 𝗔𝗜 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: I have a strong foundation in AI, ML, and NLP, making me the ideal choice for businesses that want to leverage intelligent solutions to improve their apps. → 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗖𝗮𝗽𝗮𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀: From front-end design to back-end integration, I handle everything so you get a seamless and robust solution. → 𝗧𝗮𝗶𝗹𝗼𝗿𝗲𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: I don’t just build apps; I provide custom, data-driven solutions to help your business grow and stay ahead of the curve. → 𝗘𝗻𝗱-𝘁𝗼-𝗘𝗻𝗱 𝗦𝗲𝗿𝘃𝗶𝗰𝗲: Whether you need consultation, development, deployment, or post-launch support, I’ll be with you every step of the way. → 𝗖𝗹𝗶𝗲𝗻𝘁-𝗖𝗲𝗻𝘁𝗿𝗶𝗰: Clear communication, regular updates, and a deep understanding of your goals to ensure the project matches your vision. Let’s collaborate to bring your ideas to life with intelligent, scalable, and user-friendly applications. Whether you’re looking to launch an AI-powered chatbot, build a sophisticated e-commerce site, or create an innovative mobile app, I’m here to make it happen!