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Tabish S.
$35/hr
100% Job Success
$200K+ earned
Available now
Offers consultations
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Full-stack & AI SaaS developer building production-ready platforms with React, Next.js, Node.js, and OpenAI integrations. $200K+ earned, 82 completed projects, 6,844 hours, 100% Job Success Score, Top Rated Plus on Upwork. WHAT I BUILD AI SaaS Platforms & OpenAI Integrations I build multi-tenant SaaS products with LLM-powered features: AI chat interfaces with streaming responses and rate-limit handling, AI-powered dashboards that summarize and surface data, automated workflows that connect model outputs to real business logic, and usage-based or subscription billing tied to Stripe. Startup MVPs For early-stage founders, I move from idea to a production-ready MVP fast — a lean data model, working auth (email/OAuth), the core user flows, and payments wired in from day one. Built to extend after you raise, not thrown away and rebuilt. Full-Stack Web Applications SaaS dashboards, CRM systems, admin panels, and marketplace platforms on Next.js and Node.js, backed by PostgreSQL or Supabase. I pay close attention to schema design, API structure, and query performance so the app holds up once real usage hits it, not just at demo scale. Cross-Platform Mobile Apps React Native apps for iOS and Android from a single codebase, including native module integration where needed (camera, Bluetooth, push notifications) and real-time, API-integrated features. CRM & Dashboard Systems Custom internal tools with role-based access, reporting views, and integrations with third-party APIs (Stripe, Xero, Zoho, and similar) so teams stop stitching data together manually. API & Payment Integrations Stripe subscription billing (proration, dunning, webhook idempotency), REST API integration, and authentication systems — OAuth, JWT, and session-based auth. AI Workflows & Automation Connecting LLMs to real business processes: structured output generation, retrieval-augmented workflows, and automation pipelines that replace manual, repetitive work. TECH STACK Frontend: React.js, Next.js, TypeScript, Tailwind CSS Backend: Node.js, Express.js, PostgreSQL, Supabase, MongoDB Mobile: React Native (iOS & Android) AI & Integrations: OpenAI API, Claude, Stripe, REST APIs, OAuth, Firebase HOW I WORK Discovery first — I scope the data model and architecture decisions before writing code, not mid-build, so we're not rebuilding foundations two weeks in. Iterative delivery — visible milestones along the way, not a single black-box release at the end. Clear communication — async updates by default, calls when they're actually useful. Clean handoff — documented, production-ready code, not a prototype you have to rebuild before it can ship. TRACK RECORD $200K+ earned across 82 completed Upwork projects and 6,844 logged hours, with a 100% Job Success Score and Top Rated Plus status — Upwork's top freelancer tier, reserved for a small percentage of accounts with sustained, high-value client outcomes. If you need an AI SaaS platform, a startup MVP, a full-stack web app, or a cross-platform mobile build done right the first time, send me your project details and I'll tell you exactly how I'd approach it.
HashPotato LLC
Associated with
HashPotato LLC
$400K+
earned
Jitendra J.
$18/hr
93% Job Success
$200K+ earned
Available now
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Need a Senior AI & Full Stack Web & Mobile App Development Partner who can take your product from idea → MVP → scale → enterprise? You're in the right place. -------------------------------------------------------------------- I'm Jitendra Jain, a Principal Software Architect & Full Stack Engineer with 14+ years of experience building AI-powered SaaS platforms, Mobile Apps, Enterprise Software, Marketplaces, CRM, ERP, Healthcare Platforms, FinTech Products, Logistics Systems, and High-Traffic Web Applications for startups, funded companies, agencies, and Fortune-level businesses. I don't just write code—I architect products that are fast, scalable, secure, maintainable, and built for long-term business growth. Whether you're launching an MVP, rebuilding an existing application, integrating AI, or scaling to millions of users, I provide complete end-to-end product engineering using modern technologies and industry best practices. -------------------------------------------------------------------- Core Expertise AI Development OpenAI • GPT-4/5 • Claude • Gemini • LangChain • LangGraph • AI Agents • RAG • MCP • AI Chatbots • AI Automation • Prompt Engineering • n8n • Zapier Mobile Development Flutter • React Native • Swift • Kotlin • Cross-Platform Apps • Native iOS & Android • PWA Frontend React.js • Next.js • Vue.js • TypeScript • JavaScript • Tailwind CSS • Material UI • HTML5 • CSS3 • Responsive UI • Figma to Code • Webflow Backend Node.js • NestJS • Express.js • Python • FastAPI • Django • Laravel • REST API • GraphQL • Microservices • WebSockets • JWT • OAuth Cloud & Database AWS • GCP • Azure • Docker • Kubernetes • Firebase • Supabase • PostgreSQL • MongoDB • MySQL • Redis • CI/CD Integrations Stripe • Stripe Connect • PayPal • Razorpay • Apple Pay • Google Pay • Third-Party APIs • CRM & Workflow Automation -------------------------------------------------------------------- Solutions AI SaaS • Custom SaaS • Mobile Apps • Enterprise Software • CRM & ERP • Marketplaces • Healthcare • FinTech • Logistics • LMS • Food Delivery • Booking Systems • Real Estate • OTT • On-Demand Platforms • POS • HRMS -------------------------------------------------------------------- Services ✔ MVP Development ✔ Full Stack Development ✔ Mobile App Development ✔ AI Integration & AI Agents ✔ SaaS Development ✔ API Development & Integrations ✔ Cloud & DevOps ✔ Software Architecture ✔ UI/UX Planning ✔ Performance Optimization ✔ Application Scaling & Maintenance -------------------------------------------------------------------- Why Clients Choose Me ✅ 14+ Years of Experience ✅ 50+ Successfully Delivered Products ✅ AI + SaaS + Mobile + Enterprise Expert ✅ Startup to Enterprise Experience ✅ Clean Architecture ✅ Scalable Codebase ✅ High Performance Applications ✅ Secure Development Practices ✅ Transparent Communication ✅ Agile Development ✅ Dedicated Long-Term Partnership ✅ Business-Driven Engineering -------------------------------------------------------------------- Keywords AI Developer • Full Stack Developer • Flutter Developer • React Developer • React Native Developer • MERN Stack Developer • Node.js Developer • SaaS Developer • Mobile App Developer • Web Application Developer • MVP Developer • Startup Developer • Enterprise Software Developer • AI Automation • OpenAI Developer • ChatGPT Developer • Claude API • LangChain Developer • API Integration • CRM Developer • ERP Developer • Marketplace Developer • FinTech Developer • Healthcare Software • LMS Developer • DevOps Engineer • Cloud Architect • Software Architect -------------------------------------------------------------------- Let's Build a Product That Scales If you're looking for a developer who understands technology, architecture, product strategy, user experience, scalability, AI, automation, and business, you're in the right place. Let's transform your vision into a world-class product that users love and businesses rely on.
Inventco Software Pvt. Ltd.
Associated with
Inventco Software Pvt. Ltd.
$20K+
earned
Thiago M.
$55/hr
97% Job Success
$1M+ earned
Available now
Offers consultations
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As a Cloud & DevOps Engineer, I help companies build reliable cloud infrastructure, DevOps platforms, infrastructure automation, and highly available systems using AWS, Kubernetes, Terraform, CI/CD, and modern security and monitoring practices. Today, I also help teams adopt AI-assisted development tools, including Claude Code and automation agents, in a practical, secure, and production-ready way. Modern DevOps is no longer only about infrastructure, pipelines, and servers. Teams are now building faster than ever with AI coding assistants, autonomous workflows, and vibe-coding tools. But fast AI-generated prototypes often need expert cloud, DevOps, security, and architecture work before they can become stable production systems. This is where my 20 years of hands-on IT experience, recognition by Upwork as an Expert-Vetted professional, and being featured in Upwork's Success Stories become real advantages. I am also the author of The Cloud DevOps Engineer's Guide, where I showcase the proven methodologies I apply to help organizations design, automate, secure, and scale resilient, cloud-native infrastructures. My core expertise includes: ✔️ Cloud infrastructure on AWS, Azure, GCP, and DigitalOcean. ✔️ Kubernetes, Docker, Helm, and production container deployments. ✔️ Terraform, Ansible, Infrastructure as Code, and environment automation. ✔️ CI/CD pipelines with GitHub Actions, GitLab CI, Jenkins, and other tools. ✔️ Claude Code, OpenClaw, and AI-assisted development workflow adoption. ✔️ AI-generated and vibe-coded application review, stabilization, deployment, and scaling. ✔️ Large codebase navigation, refactoring support, and development automation. ✔️ AI-assisted test generation, documentation workflows, and code review support. ✔️ Security reviews for code, cloud infrastructure, secrets, permissions, and deployments. ✔️ Custom AI agents for engineering, DevOps, monitoring, and code review workflows. ✔️ 24/7 monitoring, observability, alerting, logging, and incident-response automation. ✔️ DevSecOps, secure pipelines, automated checks, and production hardening. ✔️ Cost optimization, scalability, reliability, and high availability. ✔️ Linux, Bash, Python, networking, databases, distributed systems, and cloud-native architecture. My experience across AWS, Azure, GCP, Kubernetes, Terraform, Docker, CI/CD, monitoring, and security allows me to work not only as a DevOps Engineer but also as an AI-Augmented Platform Engineer, helping teams modernize how they build, deploy, review, secure, and operate software. Whether you need to modernize your infrastructure, adopt Claude Code, explore OpenClaw-based automation, build custom agents, review an AI-generated codebase, stabilize a vibe-coded application, or deploy, secure, and scale your prototype in the cloud, I can help you move from idea to production with a secure, stable, and scalable setup.
Thiago M. has worked .
EZOps Cloud
Associated with
EZOps Cloud
$8M+
earned
Alexander Z.
$40/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | 💯 𝟭𝟬𝟬% 𝗝𝗦𝗦 | 💵 $𝟭𝟬𝟬𝗞+ 𝗘𝗮𝗿𝗻𝗲𝗱 | ⏱️ 𝟰,𝟳𝟬𝟬+ 𝗛𝗼𝘂𝗿𝘀 | 🧑‍💻 𝟭𝟲+ 𝗬𝗲𝗮𝗿𝘀 𝗶𝗻 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 ⚛️ React Developer • Full Stack Developer • AI Developer 🔥 𝗖𝗹𝗲𝗮𝗻 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲, 𝗳𝗲𝘄𝗲𝗿 𝗿𝗲𝗯𝘂𝗶𝗹𝗱𝘀, 𝗳𝗮𝘀𝘁𝗲𝗿 𝗹𝗮𝘂𝗻𝗰𝗵 I'm Alex. I run product delivery at Olearis with a 30-person team, and I help founders and startups ship web, mobile, and AI products that launch on time, scale cleanly, and don't need rebuilding later. As a full stack developer and React developer, I take ownership from idea to production, so you get one accountable partner instead of five contractors and don't pay to fix the same things twice. 📊 𝗥𝗲𝘀𝘂𝗹𝘁𝘀 𝗳𝗿𝗼𝗺 𝘁𝗵𝗮𝘁 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵 12M+ users, that's what we shipped in social mobile products. 1M+ users and a 4.8 App Store rating, that's our AI mental health work. 80+ companies including Bank of America and Citibank trust software we built. 36+ education apps run on AI tutor logic we designed. 🧩 𝗪𝗵𝗮𝘁 𝗜 𝘄𝗼𝗿𝗸 𝗮𝗰𝗿𝗼𝘀𝘀 I lead builds end to end as a full stack developer, web developer, React developer, react native developer, mobile app developer, Python developer, AI Developer, and WordPress developer. 16+ years in production. The rule is simple: build it properly from the start, so your next developer doesn't have to rewrite it later. 🔥 𝗪𝗵𝗮𝘁 𝗜 𝗵𝗲𝗹𝗽 𝘄𝗶𝘁𝗵 ⚛️ Frontend & web. As a React developer and web developer, my team and I build SaaS platforms, dashboards, admin panels, marketplaces, and web apps with modern React patterns, clean architecture, Figma-to-code accuracy, and accessibility (WCAG 2.1 AA). React web development done right goes past screens: performance, reusable components, and maintainability. 🧱 Full stack. As the full stack developer owning the architecture, I connect frontend, scalable backend, mobile, Firebase, FastAPI, role-based access (RBAC), OAuth flows, and AI logic into one production-ready system. Whether it's a full stack developer react node build, a python full stack developer setup, or full stack developer php and full stack developer laravel work, you get one owner instead of five. 🤖 AI. On the AI Developer side, we build AI that's useful inside the product: assistants, agentic workflows, AI agent development, LLM integration, recommendations, and AI dashboards. From ai chatbot developer work to ai software developer system design, an AI Developer only earns their place when machine learning features are useful, not just clever in a demo. A data scientist explores the data, a Python developer turns it into services, and an AI Developer ships it, plus power bi developer reporting dashboards. 🐍 Backend & Python. As a Python developer with deep FastAPI experience, I build APIs, integrations, automation, data pipelines, machine learning workflows, and backends that handle real users. If your backend feels fragile, I step in as a Python developer and full stack developer to clean it up: readable, tested, production-ready, easy for the next data scientist or web developer to support. 📱Mobile. As a react native developer and mobile app developer, I build iOS and Android apps that connect cleanly to backends, APIs, subscriptions, payments, and push. A strong react native mobile app developer thinks about performance, release flow, and future support. Need cross-platform? A flutter developer can support Flutter or help you choose the right stack. 🌐 WordPress. As a WordPress developer, I handle marketing sites, landing pages, and CMS builds beside the main product, so your React developer, full stack developer, and WordPress developer work stays one consistent product story. 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 🟣 Parlor, social platform, 12M+ users 🟢 UpLife, AI mental health app, 1M+ users, 4.8★ 🔵 Notate, secure productivity, trusted by Bank of America & Citibank 🟠 Fillrr, AI document app with smart parsing 🔴 Beatly, SaaS connected to Netflix, Uber, Spotify & 250M+ creators 🟤 HearMeOut, AI 24/7 therapy companion ⚪ Exam Prep Apps, 36+ education apps with AI tutor logic 💰 𝗪𝗵𝘆 𝘁𝗵𝗶𝘀 𝘀𝗮𝘃𝗲𝘀 𝘆𝗼𝘂𝗿 𝗯𝘂𝗱𝗴𝗲𝘁 ✅ Clean React developer and web developer work means fewer frontend bugs. ✅ Thoughtful full stack developer work means frontend, backend, and mobile aren't fighting each other. ✅ Reliable Python developer and FastAPI work means a backend easy to scale and monitor. ✅ Good react native developer, flutter developer, and mobile app developer work means fewer mobile fixes after release. ✅ Practical AI Developer, machine learning, and data scientist work means AI features that are useful, not trendy. 📩 Need a React developer, web developer, full stack developer, or AI Developer? Text me and I'll tell you honestly what it'll take. 🔑 Areas: React Developer • Full Stack Developer • AI Developer • web developer • wordpress developer • mobile app developer • react native developer • python developer • machine learning
Olearis
Associated with
Olearis
Sergey G.
$39/hr
100% Job Success
$3M+ earned
Available now
Offers consultations
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Helping manufacturing and industrial teams build scalable CPQ, quoting, pricing automation, quote generation, proposal generation, and quote-to-cash systems that actually work in real sales operations. Experience working with CPQ platforms including Salesforce CPQ, Revenue Cloud, Oracle CPQ, Apttus CPQ, custom product configurators, and pricing automation solutions. Verticals: industrial equipment, HVAC & mechanical contractors, contract manufacturing, building materials, engineered products, custom assemblies, field services. Where I've helped: Spreadsheets → structured quoting & pricing automation Moved pricing logic, product configuration rules, pricing configuration, quote generation processes, and approval workflows out of Excel into scalable CPQ and quote management systems sales reps can actually use without breaking pricing. Homegrown tools → maintainable quote-to-cash systems Preserved existing business logic while removing single-developer dependency and improving maintainability, quoting workflows, sales operations visibility, CRM automation, and RevOps processes. Document builders (PandaDoc, Qwilr) → automated proposal generation Connected configuration, pricing engines, CRM data, Salesforce CRM, and ERP systems so quotes, proposals, SOWs, and sales documents generate automatically from rules instead of manual assembly. Heavy CPQ (Salesforce CPQ, Oracle CPQ) → right-sized implementation Simplified existing CPQ setups, pricing workflows, quote generation processes, product configuration models, and product configurators — or replaced overengineered systems with tools that better match how the sales team actually sells. Quote-to-cash workflow setup end-to-end Quotes → proposals → contracts → e-sign → sales orders → fulfillment Built full document automation flows with branded proposal generation, contract generation, approval routing, e- sign integration (DocuSign, PandaDoc, native e-sign), and downstream Sales Order / Purchase Order automation. Approved quotes flow directly into fulfillment without manual re-entry, duplicate data entry, pricing mismatches, or version control issues between sales and operations. Experience with: CPQ, Configure Price Quote (CPQ), Salesforce CPQ, Revenue Cloud, pricing automation, pricing configuration, proposal automation, sales quoting, quote generation, proposal generation, RevOps workflows, Quote to Cash (QTC), sales document automation, CRM automation, Salesforce CRM, Salesforce Sales Cloud, product configuration, approval workflows, contract management, ERP/CRM integration, API integration, subscription pricing, dynamic pricing, sales operations, and quote-to-cash processes. Not sure where to start? Send a quick overview of your current quoting process, pricing workflow, quote generation process, CPQ implementation, or proposal generation setup — I’ll take a look and share what I’d improve, no commitment required.
TWT Capital Inc.
Associated with
TWT Capital Inc.
$3K+
earned
Harish K.
$18/hr
98% Job Success
$500K+ earned
Available now
Offers consultations
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I am a Full Stack Web & Mobile App Developer with expertise in Web Development, iOS & Android App Development (Top 3%), maintaining 100% Client Satisfaction on Upwork and successfully delivering hundreds of projects across industries. I am a Top-Rated Plus Mobile App Developer specializing in Flutter, React Native, iOS (Swift), Android (Kotlin) and Full-Stack Application Development. I build AI-powered mobile apps, real-time video streaming platforms, SaaS products, MVPs and on-demand service applications with scalable backend architectures using Node.js, NestJS, Laravel and Firebase. I have had the opportunity to work with numerous startups, scale-ups and enterprises, helping them design, develop, launch and scale high-performance mobile and web applications that work flawlessly across devices. ✅ I Can Help You With: - Mobile App Development with Web Admin Panel - MVP Development & SaaS Application Development - API Development & Third-Party Integrations - Node.js / NestJS Backend for Mobile & Web Apps - Laravel / PHP Backend Development - Firebase Integration (Auth, Firestore, Cloud Functions) - Payment Gateway Integration (Stripe, Razorpay, PayPal) - Real-Time Chat, Notifications & WebSocket Integration 💡 Having Expertise In: - AI-Powered Mobile Applications - Real-Time Video Streaming Apps - Live Streaming & Video Sharing Platforms - E-Learning & EdTech Applications - E-Commerce & Marketplace Apps - On-Demand Service Apps (Taxi, Food, Delivery, Booking) - Chat & Social Networking Apps - SaaS & Subscription-Based Platforms - Gamified Mobile Applications - AR/VR Mobile App Development - IoT & BLE-Based Mobile Applications 🎯Key Milestones: 🚀 Rewarded as 🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 🏆 by Upwork (𝗧𝗼𝗽 𝟯%) 🚀 7000+ personal hours on Upwork and still counting 🚀 100000+ agency hours on Upwork and still counting 🚀 100% Job Success (Client Satisfaction Ratio) 🚀 500+ jobs completed successfully as an Agency 🎯 Checkout my portfolio of apps on Upwork: Over the past decade, I have honed my skills in developing a diverse array of iPhone and Android applications Development ✅ Health and Fitness Apps ✅ GPS/ Geo Location Apps ✅ Trade Apps ✅ Homeowner/Contractor App ✅ Artificial Intelligence based Apps ✅ Bluetooth / BLE Integration Apps ✅ Food Delivery Apps ✅ Nutrition Planning Apps ✅ Restaurant Search Apps ✅ Salon Booking Apps ✅ Gym Booking Apps ✅ Taxi Apps ✅ AI Powered Apps ✅ E-commerce Apps ✅ Dating and TikTok Style Apps ✅ Video Streaming, Voice Calling, Chat and Messaging Apps ✅ Real Estate Apps ✅ Driver Instructor Finding Application ✅ Hotel and Travel Booking Apps ✅ E-Learning Mobile Application ✅ Wellness & Meditation Application ✅ NDI's Industry Applications 🎯 Areas of Expertise ◉ Mobile App Development: Swift, Objective C, Kotlin, Java, Jetpack ◉ Cross-Platform App Development: Flutter (Dart), React Native ◉ Backend Development: Node JS, Nest JS, Laravel, PHP, Express ◉ Frontend Development: React JS, Next JS, Angular, HTML5, CSS3 ◉ API Development & Integrations: REST APIs, AWS Lambda, API Gateway ◉ Databases & Cloud Storage: MySQL, MongoDB, Firebase, DynamoDB ◉ Real-Time App Features: Socket IO, Firebase Real Time Database, Twilio ◉ Payment Gateway Integration: Stripe, Razorpay, PayPal, Braintree ◉ Maps & Location Services: Google Maps, Apple Map Kit, GPS Tracking ◉ Version Control & Collaboration: GitHub, Bitbucket, GitLab I specialize in no-code/low-code development and AI integrations, allowing you to launch faster while keeping costs low without compromising quality. Additional Services that i am offering: - 6 Months Free Maintenance once the apps goes live on apple store and Google play store - Ownership/iP rights from the day one uploaded on the Client Github - Regular Updates & Scrum meetings. - Following Agile Scrum Methodology from day one - Strictly adhering to the Apple Guidelines and Google Guidelines. - Taking Complete responsibility of Deployment on both Apple store and Google Play store. I specialize in no-code/low-code development and AI integrations, allowing you to launch faster while keeping costs low without compromising quality. I work with tools like Bubble, FlutterFlow, Webflow and integrate powerful AI solutions using Claude, GPT and OpenAI APIs to build smart, automated systems. 🔹 What I Do - Full Stack Web & Mobile App Development - No-Code / Low-Code Development (Bubble, FlutterFlow, Webflow) - AI App Development & Integration (Claude AI, GPT-4/5, OpenAI API, Chatbots, Automation) - SaaS Application Development (Subscription Models, Multi-Tenant Systems) - API Integration (Payment gateways, third-party services) - Dashboard & Admin Panel Development - Workflow Automation (Zapier, Make, AI Automation Systems)) - UI/UX Design (Figma) 👉 Let’s start with a FREE 15–30 minute consultation to discuss your project and define the best approach. Contact us today to discuss your project requirements.
Harish K. has worked .
Paras Technologies
Associated with
Paras Technologies
$3M+
earned
Fran H.
$90/hr
100% Job Success
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Web developer with 10+ years of professional experience, successfully freelancing for over seven years. I use Python and Django for most of my work. I have also worked extensively with WordPress in the past, though I rarely do so now. Backend work is my primary focus (API, DB, application logic, CI), but I'm also adept at frontend tasks. When it comes to desktop apps, C# is my language of choice for Windows and Java for cross-platform apps. In all of my projects I put code quality very high on my list of priorities, as well as following standards and best practices. "Readability counts"
Temurjon M.
$75/hr
100% Job Success
Available now
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⭐ Top Rated Plus, 100% Job Success, and 17 years of software engineering experience. I help SaaS, healthcare, fintech, and automation teams build production-ready AI and full-stack systems. Best fit: AI integrations, RAG systems, internal agents, document processing, backend automation, scalable SaaS architecture, and technical rescue work. I work well with clients who need reliable backend design, clean data flow, secure APIs, cloud deployment, and long-term maintainability. Core areas: - AI, LLM, RAG, agents, chatbot workflows, document processing, and semantic search - React, Next.js, Angular, TypeScript - Node.js, NestJS, Python, FastAPI, Django - PostgreSQL, MongoDB, Redis, Prisma, Elasticsearch/OpenSearch - AWS, Docker, Kubernetes, Terraform, CI/CD - Healthcare SaaS platforms involving EMR/EHR, patient portals, billing workflows, and clinical documentation systems - FinTech, bill pay, banking, payment workflows, and multi-tenant SaaS platforms - SaaS refactoring, backend performance, architecture cleanup, and technical rescue work Relevant experience includes: - Healthcare platforms involving EMR/EHR, patient portals, billing, inventory, and clinical workflow automation - AI-powered clinical documentation and voice-to-text workflows - AI dental application using Next.js, NestJS, FastAPI, PostgreSQL, and LLM integrations - AI-powered property management SaaS with workflow automation and document processing - FinTech and bill pay architecture for multi-tenant platforms - AWS Lambda and ETL pipeline optimization - Redis Oplog and Meteor performance optimization - Document processing AI agents and RAG-based workflows I think like an architect, but I still write code. I care about clean architecture, security, testing, failure handling, and simple communication. I do not build fragile demos. I build systems that can survive real users and be maintained after launch. If your project needs a senior engineer who can understand the product, identify technical risk, and ship reliable software, I can help.
Temurjon M. has worked .
ElegantMind AI & Automation Agency
Associated with
ElegantMind AI & Automation Agency
Asif H.
$30/hr
95% Job Success
$800K+ earned
Offers consultations
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I help startups and growing businesses turn ideas into production-ready SaaS platforms using ASP.NET Core, Angular, Blazor, and Microsoft Azure — and increasingly, into AI-powered products using OpenAI, Azure AI, and modern LLM tooling. With 𝟴+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 in full-stack development, I've built secure 𝗔𝗣𝗜𝘀, 𝗺𝘂𝗹𝘁𝗶-𝘁𝗲𝗻𝗮𝗻𝘁 𝘀𝘆𝘀𝘁𝗲𝗺𝘀, 𝘀𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻-𝗯𝗮𝘀𝗲𝗱 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀, 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗱𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱𝘀, 𝗮𝗻𝗱 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲-𝗴𝗿𝗮𝗱𝗲 𝘄𝗲𝗯 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀. More recently, I've been integrating AI capabilities directly into these platforms — chat assistants, document intelligence, and automation features that clients are increasingly asking for. I understand how to move fast without sacrificing scalability, security, or long-term maintainability. 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: - ASP.NET Core (.NET 6/7/8, 9, 10), C#, Web API - Angular, TypeScript, RxJS - Blazor (Server & WebAssembly) - RESTful API development & microservices architecture - Entity Framework Core, SQL Server, PostgreSQL - Azure (App Services, Functions, Blob Storage, Key Vault, Application Insights) - Authentication & Authorization (JWT, OAuth2, Azure AD) - CI/CD with Azure DevOps & GitHub Actions - Docker & containerized deployments - Clean Architecture, SOLID principles 𝗔𝗜 & 𝗟𝗟𝗠 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝗦𝗸𝗶𝗹𝗹𝘀: - OpenAI API & Azure OpenAI Service integration - AI chatbots and virtual assistants embedded in Angular/Blazor apps - Retrieval-Augmented Generation (RAG) with vector search (Azure AI Search, pgvector) - Semantic Kernel for .NET-based AI orchestration - Document intelligence & automated data extraction (Azure Document Intelligence) - Prompt engineering for business workflows (support, reporting, content generation) - ML.NET for lightweight in-app predictions and classification 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘄𝗶𝘁𝗵: - End-to-end SaaS application development (MVP to production) - Backend API design and performance optimization - Modern Angular frontends with scalable architecture - Blazor dashboards and admin portals - Cloud deployment and DevOps automation - Legacy .NET modernization and migration to .NET Core - Adding AI features (chat, search, automation) to existing .NET/Angular apps 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜'𝘃𝗲 𝘄𝗼𝗿𝗸𝗲𝗱 𝘄𝗶𝘁𝗵: - SaaS & B2B platforms - HR & Workforce Management systems - FinTech & payment integrations - Healthcare portals & internal systems - Analytics & reporting dashboards - Enterprise admin tools 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗵𝗶𝗿𝗲 𝗺𝗲: - I focus on business outcomes, not just features. - I write clean, structured, and maintainable code. - I take ownership from planning through deployment. - I communicate clearly and deliver in defined milestones. - I build systems that are secure, scalable, and production-ready. If you're looking for a senior .NET and Angular developer who can architect, build, deploy — and now increasingly, add AI-driven capabilities to — reliable, production-grade software, let's talk.
Asif H. has worked .
Eteksol
Associated with
Eteksol
$100K+
earned
Artem B.
$35/hr
100% Job Success
$500K+ earned
Available now
Offers consultations
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𝐈𝐠𝐧𝐨𝐫𝐞 𝐭𝐡𝐞 𝟐𝟒𝐡+, 𝐈'𝐥𝐥 𝐫𝐞𝐩𝐥𝐲 𝐀𝐒𝐀𝐏. 🧩20,000 hours as a Shopify dev on Upwork across 120+ projects. Custom stores, public apps, headless setups - I’ve built them all. Shopify developer achievements: - built 80 Shopify stores for fashion, lifestyle, and supplement brands, generating $155M+ in combined annual revenue. - as a Shopify developer, I built 35+ themes converting Figma designs to Shopify 2.0 theme. I always focus on premium website design, Shopify SEO optimisation, conversion rate optimisation and app integrations like Klaviyo, Recharge etc. to maximize growth. - Shopify app developer skilled in Shopify app development - built 48 public apps with 4.9★ rating for Shopify app store and 20 Shopify custom apps (as an example - product configurator). - expert Shopify app developer who delivered 30+ apps with a "Built for Shopify" badge, trusted by 80000+ active stores. Ready to be the React developer for your next Shopify public app or custom solution. - Shopify B2B expert - helped 22 wholesalers digitize wholesale portals, quick-order forms, and custom payment terms, saving 30+ manual hours weekly. - 55 Shopify theme customization projects for Shopify 2.0 themes using Liquid, HTML, CSS, and JavaScript. As a full stack developer, I heavily focus on improving design and Shopify speed with a proven ability to customize a modern OS 2.0 theme using Liquid developer skills for your Shopify store. - assisted 46 clients in boosting sales via conversion rate optimization and mobile-first approach. As a website developer, I eliminate bugs and gaps holding your Shopify website or Shopify store back. As a web developer I provide design refinement + implementation to optimize both desktop and mobile UX for growth, with affiliate marketing apps integrations for better UX. - 30 migrations made - Woocommerce to Shopify, Shopware to Shopify, Magento to Shopify, Bigcommerce to Shopify migrations or other CMS to Shopify migration. Handled collections, customer, order and other data migration with protecting existing Shopify SEO rankings for Shopify management. As a Shopify developer expert, for one client I migrated 5,000,000+ data rows with 100% SEO traffic retention and almost zero downtime. - with more than 100 Shopify development and Shopify app development audits under my belt, where I specialize in turning underperforming stores around to boost Shopify speed and Core Web Vitals metrics, I delivered $10M+ in incremental revenue for my last 20 clients. I always achieve improvements for my clients through enhancing Shopify SEO, applying my Liquid, HTML, CSS, and JavaScript skills to clean the code and avoid third-party apps that slow down site speed. My Shopify developer skills: 🟢 Shopify developer seo marketing, shopify va - I set up shopify site for beauty and fashion, luxury, wellness, supplement, jewelry, lifestyle, other brands and sync instagram social media posts 🟢 Shopify OS 2.0 theme customization beyond template limitations - skilled with themes like Dawn, Impulse, Focal, Impact, Be Yours and 35 more 🟢 Shopify app developer - strong understanding of JavaScript, React Router v7, TypeScript, Prisma, Polaris, Remix.js, Python shopify 🟢 Shopify developer building headless storefronts using Hydrogen, Oxygen, React with headless CMS integration. 🟢 Shopify developer CRO and landing page builder specializing in developing landing pages to accelerate growth for e-commerce brands using GemPages/Replo. 🟢 Shopify app development with focus on Shopify Admin API, Shopify Storefront API, Shopify API integration, webhooks (HMAC verification, idempotency), OAuth install flow, Theme App Extensions / App Embed Blocks - shopify backend developer. 🟢 Shopify 2.0 theme development based on the Figma or HTML designs 🟢 Shopify Plus development, with significant checkout customization for B2B companies and brands 🟢 Shopify Plus developer - custom Shopify app development, Shopify Functions, Shopify checkout extensibility, B2B features and API integration experience 🟢 Deep experience in theme customizations using Liquid, HTML, CSS, and JavaScript 🟢 Custom Shopify theme development and Shopify UX improvements based on Figma designs 🟢 Homepage, Product Page, supporting pages optimization and refinement for better Shopify marketing - theme customization as well - not an industrial designer 🟢 Shopify ecommerce website configuration - will handle subscriptions, Klaviyo email marketing, Judge.me, Loox review apps, Shopify dropshipping setup, payment integration and checkout, quiz apps (Octane AI, Shop Quiz), Google Analytics 4, Meta Pixel & Conversion API, google ads, inventory management, kajabi, etsy store migration. With Wordpress shopify developer background, I handle end-to-end Shopify migrations including WooCommerce to Shopify migration (not fintech / odoo / facebook ads) Drop a message or invite to discuss details!
DevIT
Associated with
DevIT
$6M+
earned