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Oleg D.
$35/hr
100% Job Success
$300K+ earned
Available now
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I’m a Full-Stack WordPress Developer with over 10 years of experience building fast, scalable, and user-focused websites that drive results. I specialize in developing high-quality 🚀 WooCommerce and WordPress solutions — from custom themes and plugins to seamless API integrations. Whether you need a conversion-optimized store, membership site, or multilingual platform, I can deliver tailored solutions with clean code and intuitive admin panels. My approach is plugin-light and performance-first. I focus on flexibility, SEO, maintainability, and ease of use — making sure your site runs smoothly for both users and editors. ✅ What I Deliver: Fully custom WordPress themes using ACF Pro, Elementor, or Sage/Roots Scalable WooCommerce stores with custom features and optimized checkout Unique and modern Webdesign Multilingual websites with WPML or Polylang Membership and subscription platforms API integrations (REST, Google Maps, Payment Gateways) Page speed optimization (Core Web Vitals ready) Clean, maintainable code that follows WordPress best practices 🧠 Tech Skills: Back-end: PHP, MySQL, REST API, Headless WP, Laravel Front-end: HTML5, CSS3 (BEM/SCSS), JavaScript/jQuery, React, Vue.js Tools: Git, Webpack, Figma, Adobe XD, Sketch Frameworks: Bootstrap, Grid/Flexbox, Tailwind, Builders: Elementor, Divi, WPBakery, JetEngine I work closely with designers, agencies, and startups as both a developer and a technical partner. My goal is not just to complete tasks — but to create meaningful, functional, and growth-oriented digital products. Let’s build something that works and grows with your business. 🔑 Keywords: WordPress Developer, WooCommerce Expert, Figma to WordPress, Custom WordPress Theme, ACF Pro, Elementor Developer, Divi Expert, JetEngine, WPML, Polylang, Multilingual Website, Membership Website, WordPress REST API, Google Maps Integration, WordPress Speed Optimization, Core Web Vitals, Custom Post Types, Custom WordPress Plugin, Sage Theme, Gulp, Webpack, Pixel Perfect HTML, WordPress Bug Fix, WooCommerce Custom Checkout, WordPress Maintenance, WordPress Support, WordPress Performance, API Integration, PHP Developer, CSS Grid, Flexbox, jQuery AJAX, SEO Optimization, Responsive Design, Mobile-First Design, UX/UI Development, Adobe XD, Sketch, WordPress for Agencies, Freelance WordPress Developer, Web Development Switzerland, E-commerce Website, Shopify Alternative, Custom CMS, Booking Website, B2B WordPress Site, Medical Website, Landing Page Development, WooCommerce Subscription, WordPress Freelance Partner, Statamic
Upro Development
Associated with
Upro Development
$100K+
earned
Ronak P.
$25/hr
100% Job Success
$90K+ earned
Available now
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Do you need one developer who understands the full picture backend architecture, AI integrations, CRM automation, payment systems, and frontend without needing to coordinate multiple developers? I’m a Full-Stack Developer with 12+ years of experience building SaaS platforms, APIs, payment systems, dashboards, and scalable web applications. 🏆 Top Rated Plus Freelancer (Top 3% on Upwork) ⭐ 12+ Years Experience | Senior Full-Stack Developer 🚀 SaaS Platforms • APIs • Payment Gateway Integrations My core stack is Laravel, Node.js, PHP, React, and Vue.js, with Python when projects require it. I build and maintain production systems used by real users, focusing mainly on backend architecture, APIs, integrations, automation workflows, and scalable SaaS applications. I also integrate AI APIs such as OpenAI, Claude, and Gemini for AI-powered features, connect CRM platforms like Zoho and GoHighLevel, and build payment and subscription systems for SaaS applications. 🚀 What I can help you build • SaaS platforms with subscription billing and multi-tenant architecture • AI-powered features using OpenAI APIs and LLM workflows • CRM integrations and automation systems • Payment gateway integrations including Stripe, PayPal, Authorize.net, Braintree, Tyler, and custom billing systems • REST APIs and backend systems using Laravel, Node.js, PHP, and CodeIgniter • WebSocket systems for real-time features and notifications • Queue systems and background job processing • React, Vue.js, and Angular frontend applications connected to custom APIs • Performance optimization, debugging, and scaling of existing applications ⚡ Tech Stack Backend: PHP, Laravel, CodeIgniter, Node.js, Python Frontend: React, Vue.js, Angular AI: OpenAI API, Claude API, Gemini API CRM & Automation: Zoho, GoHighLevel Databases: MySQL, PostgreSQL, Redis, MongoDB Infrastructure: AWS, Docker, Nginx, CI/CD, WebSockets, Queue Systems I focus on building reliable, maintainable systems with clean code, realistic timelines, and clear communication throughout the project. If you're building a SaaS platform, AI-powered application, payment system, or need a dependable full-stack developer for long-term product development, feel free to reach out.
Ronak P. has worked .
Shoaib M.
$25/hr
100% Job Success
$80K+ earned
Available now
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🏆 Top Rated Plus React Native Developer | 100% Job Success | $80K+ Earned I help founders and product teams build production-ready mobile apps for iOS and Android using React Native, Expo, TypeScript, AI integrations, backend APIs, dashboards, payments, and App Store / Google Play launch support. ⚡ We're a good fit if you are thinking: - I need a senior React Native developer who can own the full app build - I want an AI-powered mobile app, but need help shaping the scope - I need a SaaS MVP built cleanly, not rushed into technical debt - I need mobile, backend, dashboard, payments, and launch handled together - My current app needs better architecture, features, or production support 🏆 Proof of work: 1. Top Rated Plus on Upwork with 100% Job Success 2. $80K+ earned across 31 Upwork jobs 3. 3,600+ Upwork hours delivered 4. 6+ years building mobile and full-stack products 5. Recent work includes AI diagnostics, photo cleaner apps, SaaS MVPs, healthcare, fintech, and subscription-based mobile products 🌐 Recent projects: - Built an AI-assisted healthcare diagnostics platform for Belmar, where doctors upload DEXA scans, review patient data, and generate structured diagnostic reports. - Built and launched Zap, an iOS/Android photo cleaner app with swipe-to-keep/delete UX, folder management, subscriptions, and App Store / Play Store deployment. - Delivered React Native, Node.js, AI, SaaS, dashboard, and automation work for startups and product teams. 🔢 What I can help you build: - React Native apps for iOS and Android - SaaS MVPs and startup mobile products - AI app features, OpenAI integrations, and chatbot workflows - Backend APIs, admin dashboards, authentication, and databases - Stripe, RevenueCat, subscriptions, and in-app purchases - TestFlight, Google Play, App Store launch, and post-launch support - Existing app improvements, bug fixes, performance work, and feature development My process: 1. Clarify your product goals and MVP scope 2. Recommend the simplest strong technical approach 3. Build a clean, scalable app architecture 4. Ship working milestones with clear communication 5. Support testing, release, and post-launch improvements 🛠️ Tech stack: React Native, Expo, TypeScript, React.js, Next.js, Node.js, NestJS, Fastify, Firebase, Supabase, PostgreSQL, MySQL, GraphQL, OpenAI, Stripe, RevenueCat, n8n, Make, and Zapier. If you need one senior developer who can understand the product, make practical technical decisions, and move the build forward without needing separate freelancers for mobile, backend, AI, and dashboard, send me your app idea. I will help you map the scope, timeline, and best technical approach within 24 hours.
Devsoul Technologies (PVT.) LTD
Associated with
Devsoul Technologies (PVT.) LTD
$20/hr
100% Job Success
$1K+ earned
Available now
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𝐇𝐞𝐥𝐥𝐨! My name is 𝐔𝐦𝐚𝐫 𝐅𝐚𝐫𝐨𝐨𝐪, I am a highly skilled 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐚𝐧𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with 𝟗+ 𝐲𝐞𝐚𝐫𝐬 of experience delivering best, secure, and intelligent digital solutions for startups and enterprises worldwide. I specialize in 𝐀𝐫𝐭𝐢𝐟𝐢𝐜𝐢𝐚𝐥 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 (𝐀𝐈), 𝐌𝐚𝐜𝐡𝐢𝐧𝐞 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 (𝐌𝐋), 𝐍𝐚𝐭𝐮𝐫𝐚𝐥 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠 (𝐍𝐋𝐏), 𝐁𝐢𝐠 𝐃𝐚𝐭𝐚, 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 I have successfully completed 𝟏𝟎𝟎+ 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 across FinTech, Healthcare, SaaS, E-commerce, Supply Chain, and Entertainment industries. ✅: 𝐀𝐈 & 𝐌𝐚𝐜𝐡𝐢𝐧𝐞 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠: - AI related applications and automation systems - AI chatbots, AI agents, and workflow automation systems - Machine Learning models for prediction, classification, and forecasting - Natural Language Processing (NLP) solutions for text and conversational AI - Integration of LLMs (OpenAI, Hugging Face, ChatGPT, Claude etc.) ✅: 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: - React.js, Next.js, TypeScript, Vue.js, Angular.js - Tailwind CSS, HTML5, CSS3 - Interactive UI/UX and responsive designs ✅: 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: - Node.js (Express.js) - PHP (Laravel) - Python (Django) - REST APIs, Microservices, and scalable architectures ✅: 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐂𝐥𝐨𝐮𝐝 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞: - Docker containerization & Kubernetes orchestration - CI/CD pipelines using GitHub Actions and Jenkins - AWS, GCP, and Azure cloud deployments - Linux server administration and Nginx configuration - Best, secure, and high-availability infrastructure ✅: 𝐂𝐌𝐒 & 𝐄-𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬: - WordPress & WooCommerce development - Shopify store setup and customization - Custom CMS development - Payment gateway integrations - SEO and performance optimization 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐂𝐥𝐢𝐞𝐧𝐭 𝐄𝐧𝐠𝐚𝐠𝐞𝐦𝐞𝐧𝐭: I have over 9 years of experience working with clients across 𝐄𝐮𝐫𝐨𝐩𝐞, 𝐍𝐨𝐫𝐭𝐡 𝐀𝐦𝐞𝐫𝐢𝐜𝐚 and 𝐀𝐮𝐬𝐭𝐫𝐚𝐥𝐢𝐚, I bring a global perspective to my work. I also have strong track record of liaising with senior management and directors, fostering relationships built on trust and professionalism. Whether it’s project planning, implementation, or handover, I consistently strive for excellence, driving positive outcomes for clients worldwide. 📞𝐂𝐨𝐧𝐭𝐚𝐜𝐭: I welcome discussions about your project and ideas to make them a success together. I treat your business as I treat mine - with utmost care and dedication. Feel free to contact me to discuss your project needs and how we can work together to achieve your goals.
Yurii V.
$29.5/hr
100% Job Success
$1K+ earned
Available now
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I am WordPress Developer with 7+ years and I specialize in custom WooCommerce stores and premium eCommerce websites and I know what separates a site that looks good from one that grows a business⭐️⭐️⭐️⭐️⭐️ 💪 My Key Results ✅ After 8,000+ hours as a WordPress Developer across landing pages and eCommerce platforms ✅ 60% revenue growth and 70% higher conversions as a WooCommerce Expert specializing in store development, shipping integrations ✅ 3x more leads and 55% faster load times across WordPress website builds for clients in the US, EU, and Philippines ✅ 35% lower bounce rates and 25% higher engagement as a WordPress Designer across 120+ Figma-to-WordPress builds ✅ 60%+ organic traffic growth within 90 days as a WordPress Developer through SEO plugin setup and on-page optimization ✅ 120+ pixel-perfect builds with Elementor and Divi as a WordPress Elementor Developer with conversions up to 70% higher ✅ 64+ awards and recognitions as a Web Developer across international design showcases ✅ 80+ Figma-to-WordPress sites engineered for speed and SEO optimization as a WordPress Developer ✅ 5+ luxury projects in jewelry as a WordPress WooCommerce Developer and WordPress Optimization Specialist ✅ 200+ hours of WordPress bug fix for dental clinics as a WordPress Developer 💡 Why Clients Choose Me ✅ 7+ years, 24/7 support, zero missed deadlines, and WordPress security expertise as a WordPress Developer ✅ 120+ WordPress & WooCommerce websites with an 18–27% boost in user engagement through optimized UI UX and conversion-focused design as a WordPress Developer ✅ 30-40% faster project delivery cycles and stronger customer retention across eCommerce & SaaS platforms as a WordPress WooCommerce Developer ✅ 50+ data entry projects and workflows completed as part of WordPress maintenance and virtual assistant support ‼️ My Expertise in Web Development 📌Frontend: HTML5, CSS3, HTML, JavaScript, Bootstrap, Tailwind CSS, Elementor, Divi Theme, WordPress Customization, WordPress Themes, Web Design, Blog Development, and WordPress Migration. 120+ builds completed as a WordPress Developer with up to 35% lower bounce rates through refined UI UX. 📌Backend: PHP, MySQL, REST API, jQuery, and Custom Plugins. As a WordPress Designer, I built scalable WordPress architectures trusted in 38 + countries, helping businesses improve performance and long-term maintainability. 📌eCommerce & CMS: WooCommerce Developer, WooCommerce Website Development, Divi WooCommerce, WooCommerce API, Custom WordPress Plugins, Landing Page Builders, Product Upload Management, and eCommerce Support. As a WooCommerce Expert, I delivered eCommerce solutions that generated up to 60% revenue growth. 📌Optimization & SEO: WooCommerce SEO, Page Speed Optimization, Malware Protection, and WordPress Backup. As a WordPress Developer, I helped businesses achieve 60%+ organic traffic growth through technical SEO improvements.I also work as a Shopify Developer. 🏢 Industries ✅ Healthcare, 9+ projects, Medical Practice, Pediatric Dentist, Psychology Practice. Delivered WordPress website solutions supporting patient booking systems as a WordPress Developer. ✅ Massage Therapist Websites, 6+ projects, Coaching & Consulting, 8+ projects, Personal Branding, 7+ projects. Built Elementor WordPress website funnels designed for client acquisition as a WordPress Elementor Developer. ✅ Finance Lending Platforms, 4+ projects, Booking Platforms, 9+ projects. Developed WordPress website systems with CRM, forms, and automation as a WordPress Developer. ✅ Construction & Home Services, 11+ projects. Built SEO-focused WordPress website solutions for local business growth as a WordPress Website Developer. ✅ Jewellery Brands, 10+ projects, Gold Buyers Websites, 5+ projects. Developed WooCommerce stores with payment integrations as a WooCommerce Developer. ✅ Industrial & B2B Platforms, 6+ projects, Trucking, Cars Recycling. Built custom WordPress website systems with API integrations and business workflows as a WordPress Developer. ✅ Education & Training Platforms, 7+ projects. Built WordPress website systems for course enrollment and lead generation as a WordPress Elementor Developer. 🚀 I Create the Value You Needed ✅ As a WordPress Developer, built 15+ custom WordPress SEO plugins, API integrations, and WordPress architectures. ✅ As a WordPress Designer, created 80+ landing pages and funnels designed to improve engagement and lead generation. ✅ As a WooCommerce Developer, built and optimized 20+ online stores, improving product flow, checkout experience, and overall usability for better business performance. ✅ As a WordPress Developer focused on SEO and performance, optimized 100+ pages using technical SEO and speed optimization techniques. ✅ As a Long Term WordPress Development Partner, supported 30+ projects from the MVP stage through scaling, maintenance, and continuous feature development.
AvanTech Solutions
Associated with
AvanTech Solutions
$1K+
earned
$35/hr
100% Job Success
$400+ earned
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I'm a Node.js developer and Full Stack Node.js React Developer specializing in developing CRM, ERP, and SaaS platforms. I build scalable backend systems, APIs, and MERN Stack applications used in real business workflows. Key highlights 🏆 Node.js developer 🏆 Full Stack Node.js React developer 🏆 MERN Stack developer 🏆 5+ years production experience in business web platforms 🏆 Bachelor’s Degree in Computer Science What clients value 💬“Strong Node.js backend developer and Full Stack Node.js React Developer who understands business logic behind CRM, ERP, and SaaS products. Builds stable APIs, integrates complex workflows, and delivers backend systems that teams rely on daily as a MERN Stack Developer.” As a Node.js developer and Full Stack Node.js React Developer, I design backend architecture for CRM, ERP, and SaaS platforms as a MERN Stack Developer. I build scalable APIs, user roles, permissions, and data workflows used inside real business systems as a Node.js developer. Working as a MERN Stack Developer, I integrate backend logic with React dashboards and internal tools built on Full Stack Node js React architecture. My work as a Node.js developer and MERN Stack Developer focuses on multi-user environments, predictable performance, and maintainable structure. Experienced Node.js developer, Full Stack Node.js React Developer and MERN Stack Developer at SI Development, focused on scalable CRM, ERP, and SaaS systems with 5 years of production experience. Key services: 💎CRM / ERP development: Design of business logic, roles, and workflows as a Node.js Backend developer and Web developer by a Node.js developer. 💎SaaS platform development: Multi-tenant architecture, subscription logic, dashboards, and scalable API infrastructure as a Full Stack Web developer using Full Stack Developer MERN approach by a MERN Stack Developer. 💎 API and integrations: REST APIs, webhooks, and service synchronization implemented as a JavaScript Developer using JavaScript across services by a Full Stack Node.js React Developer. 💎 Admin panels and dashboards: React dashboards supported as a Front End developer and MERN Stack Developer. Tech stack As a Node.js backend developer and MERN Stack Developer, I work with: 🛠️Backend: Node.js, Nest.js, Express.js, REST API, Webhooks, Authentication, Roles & Permissions 🛠️ Databases: MongoDB, PostgreSQL, MySQL, Redis, Firebase 🛠️ Frontend: React.js, Next.js, Redux 🛠️ Architecture & Infrastructure: AWS, Docker, Kubernetes, CI/CD 🛠️ Languages: JavaScript, TypeScript Project focus: As a Node.js developer and Full Stack Node.js React Developer, I build backend systems where multiple users interact with shared data as a MERN Stack Developer. Typical products include internal dashboards and operational business software created as a MERN Stack Developer and Full Stack Node js React engineer. My role as a Node.js developer is maintaining stable product logic and predictable behaviour in real workflows. Related technical exposure Worked with systems integrated with Zoom Web services, Java spring environments, and Python Nodejs services as a Python developer collaborator. Participated in platforms including a Stock trading app and day trading analytics dashboards. Experience around Wordpress developer ecosystems and Mobile app developer teams. Worked with interfaces connected to Vue and Angular frontends. Exposure to probability-based features such as coin flip mechanics and gambling logic simulations. Business impact My work as a Node.js developer improves reliability of internal platforms used daily by teams as a MERN Stack Developer. As a Full Stack Node.js React Developer and MERN Stack Developer, I help companies move operations from manual processes into structured systems that scale. If you’re looking for a Node.js developer, Full Stack Node.js React Developer, or MERN Stack Developer who understands real business software, dashboards, and growing teams, I’d be happy to discuss your project goals and technical needs.
Si Development
Associated with
Si Development
$5K+
earned
Oleksandr K.
$35/hr
100% Job Success
$200K+ earned
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Hello. My name is Alex. I am a Full Stack developer with total experience of more than 10 years. My strong points are Punctuality and Result Orientation. My goals are always to meet the needs of my client and his/her deadlines. When I am working on new projects, I like to keep clear communication with my clients, as I believe this is a key to successful accomplishment of my work. In 2010 I began to develop web application. Also I have experience in development of desktop and mobile applications using C#. Besides, I have about 2 years of experience in development in android and java. Here is my technology stack: - C# - ASP.NET MVC - PHP/Laravel - SQL - MS SQL - HTML 5 - CSS 3 - Javascript/jQuery - Angular.js, Node.js, Ember.js, Vue.js - Win32 - Xamarin, UWP, WPF - React Thanks for your time and attention to my candidacy. Looking forward to hear from you.
Oleksandr K. has worked .
bhuwan K.
$10/hr
97% Job Success
Available now
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I’m a Senior WordPress Developer with 15+ years of experience helping businesses build, optimize, and maintain high-performing websites. I’ve completed 100+ projects and logged 14,000+ hours on Upwork, delivering reliable, long-term results. Core Expertise: Custom WordPress Development (Themes & Plugins) Elementor & Advanced Page Builders WooCommerce (Full setup, optimization & scaling) Speed Optimization (Core Web Vitals, GTmetrix, PageSpeed) Website Maintenance (fast response, ongoing support) Malware Removal & Website Security Hardening Low-cost, efficient WordPress maintenance solutions Website Migration & Server Optimization Shopify (Custom themes, Liquid updates) AI integrations in WordPress Security & Maintenance Focus (What sets me apart): I don’t just fix websites — I protect and maintain them long-term at minimal cost: Malware detection and complete cleanup Security hardening (firewall, login protection, file monitoring) Regular updates without breaking the site Backup systems with quick recovery setup Performance monitoring to prevent downtime Lightweight, cost-effective maintenance plans Why Clients Choose Me: Fast-loading websites (better SEO and conversions) Clean, scalable code (no future headaches) Quick turnaround with less than 24-hour response Business-focused approach, not just technical work Results I Deliver: Improved website speed from 5 seconds to under 2 seconds Reduced downtime and zero malware reinfection Better UX leading to higher engagement and conversions If you need someone who can optimize your current site and maintain it securely without high ongoing costs, I’m ready to help. I am available for long-term collaboration and ongoing maintenance support.
Stephen O.
$50/hr
100% Job Success
Available now
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𝙉𝙚𝙚𝙙 𝙖 𝙬𝙚𝙗 𝙤𝙧 𝙢𝙤𝙗𝙞𝙡𝙚 𝙥𝙧𝙤𝙙𝙪𝙘𝙩-𝙬𝙞𝙩𝙝 𝘼𝙄 𝙘𝙖𝙥𝙖𝙗𝙞𝙡𝙞𝙩𝙞𝙚𝙨-𝙩𝙝𝙖𝙩 𝙖𝙘𝙩𝙪𝙖𝙡𝙡𝙮 𝙨𝙝𝙞𝙥𝙨 𝙩𝙤 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙞𝙤𝙣? I build modern web platforms, cross-platform mobile apps, and AI-powered systems end-to-end, from backend architecture and APIs to scalable cloud infrastructure, intuitive UIs, and intelligent product features. My focus is building real AI functionality inside production apps - semantic search, AI copilots, automation systems, document intelligence, and decision-support tools designed for reliability, observability, and long-term scalability. 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I design and build scalable web platforms, SaaS products, dashboards, and enterprise systems using modern frontend frameworks and production-grade architectures. Stack & Technologies React, Next.js, Angular, TypeScript, JavaScript (ES6+), Redux, Zustand, React Query, WebSockets, REST APIs, GraphQL, Micro-frontend architecture, Server-side rendering (SSR), Static site generation (SSG), Progressive Web Apps (PWA), Tailwind CSS, Material UI, Chakra UI, Bootstrap, Responsive UI, Design systems, Performance optimization, SEO optimization, Lighthouse performance tuning, Web accessibility (WCAG) 𝗖𝗿𝗼𝘀𝘀-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I develop high-performance mobile apps for iOS and Android with shared logic and consistent UX. Technologies & Platforms React Native, Flutter, Expo, TypeScript, Dart, Native modules, Cross-platform architecture, Offline-first applications, Local storage, Push notifications, Deep linking, OAuth authentication, Mobile analytics, App performance monitoring, App Store deployment, Google Play deployment, OTA updates, CI/CD pipelines 𝗔𝗜 & 𝗟𝗟𝗠 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 I integrate production-ready AI systems directly into applications, focusing on reliability, evaluation, and real-world usability. AI Capabilities Retrieval-Augmented Generation (RAG), Semantic search, Knowledge assistants, Document AI, AI copilots, Workflow automation, AI agents, Multi-step reasoning pipelines, Structured LLM outputs, Tool-calling agents, Prompt engineering, Context engineering, LLM evaluation frameworks, Guardrails, Hallucination mitigation, AI observability AI Frameworks & Platforms OpenAI, Claude, Gemini, Llama, DeepSeek, LangChain, LangGraph, LlamaIndex, AutoGen, Semantic Kernel, Hugging Face Transformers, Sentence-Transformers, Embedding pipelines, Vector search architectures Vector Databases Pinecone, Weaviate, Chroma, FAISS, pgvector, Milvus, Redis Vector Search 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗔𝗣𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I build scalable backend systems and microservices designed for high concurrency, complex business logic, and AI workloads. Backend Stack .NET, ASP.NET Core, Node.js, Python, FastAPI, Express.js, NestJS, Django, Flask, REST APIs, GraphQL APIs, gRPC, WebSockets, Event-driven architecture, Async processing, Background workers, Task queues, Distributed microservices Data & Databases PostgreSQL, MongoDB, MySQL, Redis, DynamoDB, Elasticsearch, BigQuery, Data pipelines, ETL workflows, Data modeling, Query optimization 𝗖𝗹𝗼𝘂𝗱 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 & 𝗗𝗲𝘃𝗢𝗽𝘀 I design cloud-native architectures that scale efficiently and remain cost-effective. Cloud & Infrastructure AWS, Azure, Google Cloud, Serverless architecture, AWS Lambda, Cloud Run, Containerized services, Kubernetes, Docker, Infrastructure as Code, Terraform, CI/CD pipelines, GitHub Actions, GitLab CI, Monitoring systems, Prometheus, Grafana, Logging pipelines, Performance monitoring 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 & 𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻 Beyond coding, I focus on building systems that remain maintainable and scalable as products grow. Engineering Practices Microservices architecture, Event-driven systems, Domain-driven design, Clean architecture, Distributed systems, API-first architecture, AI-ready data architecture, Observability, Reliability engineering, Performance optimization, Security best practices 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 1️⃣ Understand the product vision, users, and goals 2️⃣ Design a simple and scalable system architecture 3️⃣ Build an MVP quickly and iterate toward production 4️⃣ Deliver maintainable systems with documentation and monitoring If you're building a web platform, mobile app, or AI-powered product, I can help architect, build, and deliver a production-ready system that scales. Let's build something impactful. 🚀
Umer S.
$40/hr
100% Job Success
$70K+ earned
Available now
Offers consultations
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If your AI works in a demo but falls apart on real data, that gap is exactly what I fix. With 8+ years across AI platforms, SaaS products, and workflow automation, I build AI-powered applications that handle real users and real workflows: RAG chatbots grounded in your data, autonomous AI agents, AI voice agents for outbound and inbound calls, and automation that replaces manual operations. I work primarily in Python and Django, with FastAPI, Node.js, and Next.js across the stack, and my focus is reliable, production-safe AI with structured, validated outputs, not prompt experiments that break under real usage. Most AI projects fail in the same place: the model works in a notebook, then breaks on messy real-world data and real edge cases. My job is the engineering around the model, retrieval, grounding, validation, and clean architecture, that turns a prototype into a system a business can run on. Recent builds: → An AI chatbot and companion platform where I built the RAG pipeline and grounded, context-aware conversations over a curated knowledge base. → A live AI voice and chat CRM where I built the agent layer with tool calling and human-in-the-loop review. → An autonomous AI voice agent for outbound calling, running in production. → A multi-tenant SaaS backend with RBAC, billing, and APIs built to scale. → An AI document-processing pipeline that turns uploads into structured, downloadable reports. (Live portfolio links shared on request.) Core stack: Python, Django, FastAPI, Node.js, Nest.js, TypeScript, Next.js, React, PostgreSQL, AWS, Docker. RAG and LLM work on OpenAI, Claude, and Bedrock. * AI systems and LLM integrations: RAG pipelines with vector databases, embedding, chunking, and relevance tuning AI chatbots and copilots grounded in internal data and knowledge bases AI agents and multi-agent workflows with tool calling, function calling, and multi-step reasoning OpenAI (GPT-4), Anthropic Claude, and AWS Bedrock integrations LangChain and LangGraph orchestration AI voice agents (inbound and outbound calling, real-time conversation) Structured AI outputs with validation layers and hallucination reduction Streaming AI systems (SSE, WebSockets) * AI automation and integrations: Workflow automation with n8n, Make, and Zapier API integrations, webhooks, and event-driven pipelines AI-assisted dashboards and internal tools * Full-stack SaaS development: Python and Django REST backends, async processing, and API design Next.js, React, TypeScript (SSR, App Router, performance) Node.js, Nest.js, FastAPI backends REST APIs, microservices, async processing Multi-tenant SaaS with RBAC, billing, and Stripe * Cloud and infrastructure: AWS (Lambda, ECS / Fargate, RDS, S3, Bedrock) Docker, CI/CD, Vercel Logging, monitoring, and production optimization How I work: I treat projects as systems, not isolated features: clean architecture from day one, reliable backend logic, controlled and validated AI outputs, responsive frontends, and clear communication. I own delivery end to end, from architecture and APIs through deployment and production readiness. If you are building an AI chatbot, RAG system, AI voice agent, AI automation, a SaaS platform, or a scalable full-stack app, I can help you build it properly and ship with confidence. Click "Invite to Job" and let's discuss your project.