Artificial intelligence enables businesses to automate workflows, increase efficiency, enhance customer experiences, and unlock new growth opportunities. As an AI Developer, AI Consultant, and founder of an AI SAAS company, I help startups and established organizations transform innovative ideas into scalable, production-ready AI solutions. For 10+ years, our team has been building software products, automation platforms, and intelligent systems. We combine the expertise of AI Developer teams, AI Consultant services, AI SAAS architects, AI Chatbot engineers, machine learning specialists, data scientist professionals, web developer teams, python developer experts, and web application developer resources to deliver scalable business solutions Key company metrics: • 10+ years in software development • 200+ successfully delivered projects • 20,000+ tracked hours on Upwork • 40+ software professionals • $1M+ earned on the platform • 5+ years average developer experience Today our team includes AI Developer specialists, machine learning engineers, data scientist professionals, python developer experts, web developer teams, and web application developer specialists. The average engineer brings 5+ years of commercial experience building AI SAAS platforms, AI Chatbot products, and business automation systems Our work focuses on helping companies implement AI in practical ways. We build AI SAAS products, AI Chatbot solutions, machine learning systems, natural language processing applications, small business automation platforms, AI API integrations, GPT-3 assistants, and intelligent workflow automation tools Many companies search for an AI Developer when what they really need is an AI Consultant who can connect technology to business outcomes. Successful AI implementation requires more than a model. It requires machine learning, natural language processing, data scientist expertise, AI API architecture, product strategy, and scalable software development. That is the approach we bring to every engagement Our AI Developer teams have delivered AI SAAS platforms used for customer support, internal operations, sales enablement, knowledge management, analytics, and workflow automation. We regularly build AI Chatbot systems using GPT-3, Botpress, AI API integrations, machine learning models, and natural language processing pipelines that improve customer engagement and reduce manual work As an AI Consultant, I help companies identify where AI creates measurable value. In many cases this includes small business automation, AI Chatbot implementation, AI API integration, GPT-3 assistants, machine learning models, and intelligent process automation. These solutions help teams save time, improve accuracy, and scale operations without increasing headcount Several projects have involved advanced machine learning, natural language processing, deep voice technologies, deep voice over solutions, conversational AI, and intelligent assistants designed to act as a virtual deal closer for sales teams. Our AI Developer teams work closely with founders and stakeholders to ensure every solution delivers business results rather than technology for its own sake Over the years, our AI Developer teams have worked with startups, SaaS companies, agencies, and enterprise organizations seeking practical AI adoption. As an AI Consultant, I regularly help businesses identify machine learning opportunities, evaluate AI API integrations, and design AI SAAS products that generate measurable ROI. Our AI Developer specialists collaborate with data scientist teams, python developer experts, web developer professionals, and web application developer engineers to transform ideas into scalable products Our experience includes AI Chatbot development for customer support, sales enablement, lead qualification, internal knowledge management, and small business automation. We have implemented GPT-3 solutions, Botpress platforms, natural language processing workflows, deep voice integrations, and deep voice over technologies for organizations looking to improve customer communication and operational efficiency Whether you need an AI Developer to build a new product, an AI Consultant to validate an idea, an AI SAAS partner to scale an existing platform, or an AI Chatbot team to improve customer interactions, we can help. Our expertise combines machine learning, data scientist capabilities, python developer experience, web developer execution, web application developer expertise, AI API integrations, GPT-3 technologies, Botpress solutions, natural language processing, small business automation, deep voice systems, and enterprise-grade software engineering We believe the best AI products are built around measurable outcomes. That is why every AI Developer, AI Consultant, AI SAAS architect, and AI Chatbot engineer on our team focuses on creating solutions that improve efficiency, automate repetitive work, and generate long-term value for our clients

🖥️ C# / .NET Developer | 📦 200+ Projects | 💯 Job Success | 🏆 Top Rated Software developer building C# / .NET applications since 2010. Specialized in Windows desktop using WPF & WinForms, with cross-platform expertise in Avalonia. Experienced in Blazor frontend, ASP.NET Core backend & Azure deployments. Developing solutions for business automation, document generation, reporting, data-intensive desktop tools, API integrations, real-time dashboards, Windows service development, and legacy .NET Framework modernization. Delivered 200+ software solutions for global clients across multiple industries, from focused utilities to large-scale, long-term systems, working both independently and within distributed teams. Technical Skills ---------------- Desktop - WPF, XAML, WinForms, WinUI, Avalonia, Uno Platform, WebView2 - MVVM, Prism, ReactiveUI, Custom Controls, Templating, Styling - WinAPI, PInvoke, Native Interop, Windows Shell Integration - Hardware Integration, Third-party SDKs, Enterprise Integration - Reporting, Printing, PDF/Excel Generation, Document Processing Databases - Schema Design, SQL Server, SQLite, EF Core, Dapper, LINQ Backend & Web - REST APIs, ASP.NET Core, Minimal APIs, Swagger, Logging - Blazor, Razor Pages, MudBlazor, HTMX, HTML, CSS, JavaScript Build & Deployment - Git, MSBuild, Visual Studio, NuGet, PowerShell, Azure, Docker - Application Packaging, Installer Creation, Code Signing

✌✌Top Rated Professional + 100% Job Success Ratio✌✌ If 15 years as a lead developer turned solution architect sounds amazing, I am still learning while keeping a keen watch on technological advances. From SAAS-based business automation (ERP, CRM, industry-specific applications) to building a portfolio in niche domains like: 👉👉Healthcare and Logistics, Aviation, and AI, I have worked as a freelancer, team lead, and technical advisor as and when required. **Though I love developing applications from scratch, I have an ample amount of work that includes** ✔ Working in collaboration with remote teams, offsite and onsite (Global Clients, Australian/US clients) ✔Migration of legacy applications as per Object Oriented Design, intuitive Single Page Application (SPA) interface with Angular 6, .NET Core, SQL SERVER 12/14, and Azure services. ✔Data analytics: PowerBI, SSRS, Tableau, DevExpress Reporting, Upscaling existing applications (features and performance enhancement, database management, etc.) ✔Entity Framework, ADO.NET, and API/ Microservices development **Withstanding a decade-long technology advancement, there is more to what I can offer if you are a well-established business having a large customer base.** 👉Setting up your cloud infrastructure with Azure and AWS to avail shared and multi-tenant services so that you can handle unpredictable changes in user demand and balance across servers. 👉 Set up proper logging and monitoring to catch any performance problems or errors before they affect your business negatively. 👉 Set up continuous integration or track down and eliminate bugs to eliminate the possible human errors while deploying the new versions. Apart from this, on-time delivery, a quick turnaround, and no-fuss behavior have earned me a good reputation and consistent client collaborations/Projects worth a few weeks to years🤗 And what's better than client feedback? Check reviews and the volume of work on my profile for various projects undertaken and successfully delivered. Please ping me for a great work experience, I look forward to helping you scale!

FinTech, Marketplace and SaaS developer. 19 years. $10M+ earned on Upwork via Ronas IT — 1,829 jobs, 100% Job Success Score, Top Rated. I lead a remote team. I'm hands-on on every FinTech build - solution architecture, scope, and release sign-off. Cases: - US neobank - 7-microservice core, Bond + Persona + Sardine + Plaid, SOC 2 path passed on our side - EU neobank - 6-month MVP under PSD2 / AMLD / GDPR, Solaris BaaS + Trulioo KYC - AU travel payments - Stripe + 3DS2 + PayTo / PayID + FingerprintJS Pro, 10 weeks kickoff-to-launch - Docky - Malta yacht-berth marketplace on Stripe SetupIntent + Identity - Hamperapp Miami - on-demand marketplace, doubled users YoY - Lainappi Finland - P2P rental marketplace on Stripe Connect - UAE marketplace - Arabic RTL + English LTR with OpenAI shopping assistant - $130K B2B SaaS - real-time project management dashboard adopted by 100+ teams - 8-year forex / social-trading platform - real-time trading dashboard, doubled users YoY - KYC redesign for Digital Finance International - review collapsed from hours to ~1 minute - 14-year FinTech engagement with AA Global Group (London) Stack: - Backend - Node.js, Laravel, Django, PHP, Python, Express, NestJS, FastAPI - Frontend - React, Next.js, TypeScript, Tailwind, REST API, GraphQL - Mobile - React Native, iOS, Android, Expo, EAS, Firebase - Data - PostgreSQL, MongoDB, Redis, Elasticsearch, Supabase - Cloud - AWS, GCP, Vercel, Docker, Kubernetes, Terraform - Architecture - Microservices, Multi-tenant SaaS, Real-time, Cross-platform mobile - Payments - Stripe, Stripe Connect, Plaid, 3DS2 - AI - OpenAI, Generative AI, AI Agents, RAG, LangChain - Compliance shipped - PSD2, AMLD, GDPR, PCI DSS, SOC 2 path, HIPAA, ISO 27001 Ronas IT - 50-70 remote specialists, Estonian entity in Tallinn, Google Cloud Partner, Awwwards Honorable Mention 2024. I'm CEO and co-founder since 2007. Same engineers scope and ship your build - no handoff from sales to delivery. How I work - discovery sprint, architecture + threat model, MVP, audit readiness. Engaged from $5K prototype to $300K neobank build. Send the regulator letter, the audit finding, the integration spec, or just a 3-line problem statement.

As a React Developer and Full Stack Developer I build custom Web Application products for B2B clients, from interface to backend. Most of my work is Full Stack Developer React Node delivery, where a React frontend and a Node.js backend support one business workflow end to end. As a Node.js Developer I own the REST API logic, authentication, roles and permissions, and the data layer behind each product. My focus is practical Web Application Development that ships, scales, and stays maintainable, with clean API Integration at the core. Across 14+ years and 130+ completed projects I have built 60+ SaaS, CRM and dashboard products, 40+ admin panels and client portals, and 200+ REST API integrations. As a React Developer and Full Stack Developer with experience leading development teams of up to 6, I have shipped for 50+ EU and US B2B clients across SaaS platforms, CRM systems, marketplaces, booking websites and API Integration projects. As a React Developer I build Web Application interfaces with React.js, Next.js, TypeScript and Responsive UI , wired to live data through API Integration . As a React Frontend Developer and Frontend Developer I deliver usable, fast interfaces — data tables, filters, admin panels and client portals. On the backend side, as a Node.js Developer and Backend Developer I build the REST API layer, ExpressJS services, authentication, roles and permissions, payment flows and CRM integrations. Many clients come to me as a Node.js Developer when a frontend already exists but the API, the data model and the business logic need to be done right. As a Backend Developer I keep the Node.js layer predictable and documented, and as a Node.js Developer I handle the API Integration between third-party services, the database and the frontend. A typical Full Stack Developer React Node project for me looks like this: a SaaS platform or internal business tool with a React frontend, a Node.js backend, a structured database and an admin workflow for the team behind it. On every Full Stack Developer React Node build I design the database structure, the REST API , the dashboards and the permissions model so the product holds up as it grows. This Full Stack Developer React Node approach keeps frontend and backend in one system. Hiring one Full Stack Developer React Node engineer also keeps the React Developer and Node.js Developer decisions consistent across the whole build. I also work as a Directus Developer and Headless CMS Developer . On 20+ content-driven and data-heavy products I use Directus CMS or Strapi as a headless backend, which gives clients a clean admin panel and an API-ready foundation. As a Directus Developer I model the data, set roles and permissions, and connect a React frontend through REST API ; as a Strapi Developer I do the same on Strapi. Headless CMS work with Directus CMS pairs naturally with my React Developer and Node.js Developer delivery. Stack I use daily: React, React.js, Next.js, Node.js, TypeScript and JavaScript on the application side; ExpressJS, REST API and API Integration on the service side; SQL, MySQL, MongoDB, Firebase and Supabase for data; Directus CMS and Strapi for headless content. Authentication, roles and permissions, payment flows, dashboards, data tables, filters and admin workflows are standard parts of how I deliver Web Application Development . How I work on a Full Stack Developer React Node project: discovery and scope first, then architecture and backlog, design where needed, development in sprints, QA on staging, production release, and support after launch. As a Web Developer with 14+ years behind me, my main promise is delivery predictability — clear scope and no surprises. As a JavaScript Developer I write code the next developer can actually read and extend. Typical projects clients hire me for: SaaS platform development, CRM systems, admin panels, marketplaces, booking websites, lead generation websites, dashboards, client portals, internal business tools, e-commerce platforms and API-based Web Application work with workflow automation and business automation. Clients also find me under related searches that match my real stack. On the React side: React Native Developer , React Native App Developer , React Next.js Developer , React Developer Firebase , and Full Stack Developer Supabase React . On the full stack side: Python Full Stack Developer , Full Stack Developer AI , Full Stack Developer Shopify , Full Stack React , Full Stack Node.js React and Node.js React . On the backend: Node.js Backend Developer and Back End Developer Node.js . I also fit Front-End Developer Full-Stack , Python Developer , WordPress Developer , Mobile App Developer and Senior Full Stack Developer . If you need a React Developer , a Full Stack Developer React Node engineer, or a Node.js Developer for a serious product, I can take it from architecture through release and support. Let's talk about your product and what it needs to do. Let's get in touch!

Top Rated Plus | 100% Job Success | 5-Star Reviews Growing businesses often outgrow spreadsheets, manual workflows, and disconnected tools long before they have the systems they actually need to run well. I build custom software, internal web applications, workflow automation, and AI-enabled operational systems that turn messy business processes into reliable tools, workflows, and data. A lot of my work starts where things are still fragmented, brittle, or hard to trust, and the real job is not just building software, but designing the right system around how the business actually operates. What I help clients build: ‣ Internal tools, admin dashboards, client portals, and management systems ‣ Client intake, approval, CRM, and onboarding workflows ‣ Quoting systems, pricing engines, calculators, and other rules-based systems ‣ Integration-heavy applications connecting tools, APIs, and third-party services ‣ Data pipelines, normalization workflows, and processing systems ‣ SaaS products and MVPs with real business logic Problems I Solve: ‣ Manual workflows that no longer scale ‣ Duplicate work across disconnected systems ‣ Inconsistent or unreliable data ‣ Operational bottlenecks and delays ‣ Systems that technically work but are hard to use or trust How I work: The focus is always on clear ROI, saving time, reducing errors, and making operations more reliable. ‣ Understand your current workflow ‣ Identify where things break down ‣ Map the logic your business depends on ‣ Design and build a system that improves it AI + automation: AI is part of my work, but not the whole story. I use AI where it creates clear value inside a larger system, most often for extraction, classification, retrieval, workflow support, and structured generation. Tools & technologies: My work often includes API development, custom web applications, business systems, operational software, inventory systems, pricing systems, and database-driven workflows. ‣ Frontend: React, Next.js ‣ Backend: Node.js, TypeScript ‣ Databases: PostgreSQL, MongoDB ‣ Integrations: REST APIs, third-party services ‣ Automation: n8n, Zapier, Make, Google Apps Script, AppSheet ‣ AI: OpenAI APIs, retrieval workflows, structured generation ‣ Infrastructure: Vercel, AWS Industries and operational workflows: ‣ Accounting & CPA firms ‣ Wholesale & inventory systems ‣ Ecommerce operations ‣ Logistics & field services ‣ Real estate workflows ‣ Data-heavy SaaS platforms If you’re trying to replace manual processes with a system that actually works for your business, feel free to reach out or invite me to your job.

⭐️⭐️⭐️⭐️⭐️ TOP RATED PLUS | Front End Developer | React Developer | Full Stack Developer | Next.js Developer — building scalable, production-grade products used by thousands of users 🚀 🔥 49 COMPLETED JOBS WITH ZERO NEGATIVE FEEDBACK ⭐️ Consistent 5-STAR REVIEWS & LONG-TERM CLIENT PARTNERSHIPS 💼 $200K+ earned on Upwork | ⏱ 8,000+ hours delivered | 🏆 100% Job Success Rate 🌍 40+ products shipped across 18+ countries | 🏅 15+ long-term client partnerships Building a serious product takes more than a polished UI — it takes a Full Stack Developer who understands architecture, scalability, and business impact. I'm a senior Front End Developer and Full Stack Developer with 9+ years building high-performance web apps, SaaS platforms, landing pages, and mobile apps for startups and growth-stage companies with React, Next.js, and Node.js. I keep frontend and backend tightly integrated so every decision serves the business. 📊 Impact & Metrics Products I've shipped serve 10K–100K+ monthly actives and handle 5M+ API requests/month. As a Front End Developer and React Developer I've cut load times 40–60%, lifted conversions 20–35%, and dropped bounce rates 25%+. Recent work: organic traffic +62%, TTI 2–3x faster, and a dashboard rebuild that grew weekly actives from 4K to 18K (+350%) in 4 months. 🏗 Architecture & Scalable Systems As a React Developer I design scalable component systems with Redux or Zustand; with Next.js I build hybrid rendering — SSR, SSG, ISR, API routes — tuned for performance and SEO. As a Full Stack Developer I work in Node.js, ExpressJS, and Python (Django, FastAPI), building REST APIs across PostgreSQL, MySQL, MongoDB, and Supabase, with WebSockets, Docker, and CI/CD on AWS or Vercel cutting release times 50%+. Modular patterns reduce technical debt and bug rates 30–40%. 🤖 AI Development & Intelligent Systems I build production-ready AI apps and agents with the OpenAI API and Claude, connecting LLMs to real product needs, not demos. As a Full Stack Developer and React Developer, I ship conversational interfaces, multi-step reasoning pipelines, ML features inside existing platforms, and AI-powered dashboards that save teams 15–25 hours/week. 📱 Mobile App Development Beyond the web, I build cross-platform apps with React Native for Android and iOS, sharing logic with the web codebase to cut delivery time up to 40%. As a Front End Developer who treats mobile as a first-class surface, I've shipped apps holding 4.5★+ store ratings. 🎨 Design-to-Code & Website Builds I turn Figma and Framer designs into pixel-perfect, responsive interfaces with Tailwind CSS and SCSS — landing pages, full websites, or redesigns, always polished and fast. As a Front End Developer I consistently hit Lighthouse 95+ and median LCP under 1.8s. 📈 Business-Oriented Engineering As a React Developer I've refactored unstable React codebases into maintainable systems, shipped Next.js platforms that grew organic acquisition, built Stripe subscription and marketplace flows, and handled API integration, cutting infra overhead 20–30%. One Full Stack Developer engagement took a signup funnel from 90 to 240/month (+165%) while halving server costs. ⚡ Performance & Optimization I treat Core Web Vitals like LCP and TTI as real product metrics, getting them 2–3x faster through code splitting, lazy loading, caching, and SSR/ISR/static rendering. As a Front End Developer obsessed with speed, I've taken pages from 6s+ to sub-2s, lifting conversion +38% and cutting bounce 25%+. 🔧 Primary Stack Frontend: React.js, Next.js, TypeScript, Redux, Zustand, Tailwind CSS, SCSS, Framer. Backend: Node.js, ExpressJS, Python (Django, FastAPI), REST, GraphQL, WebSockets. AI: OpenAI API, Claude, custom ML. Mobile: React Native, native Android. Infra: AWS, Vercel, Docker, CI/CD, PostgreSQL, MySQL, MongoDB, Redis, Supabase. Need a React Developer for a complex SPA or a Full Stack Developer to own the whole product? The stack flexes to fit. 💡 Data-Backed Results at a Glance ✅ 60% faster load times via Next.js rendering & caching ✅ 35% increase in conversion rates through funnel-focused Front End Developer work ✅ 350% growth in active users on a React Developer dashboard rebuild ✅ 62% lift in organic traffic via SEO-optimized SSR/SSG ✅ 50% shorter release cycles after CI/CD automation ✅ 40% reduction in mobile delivery time through shared React Native logic ✅ 30% drop in technical debt and bugs via modular components ✅ 25% lower bounce rates after Core Web Vitals work ✅ 165% more signups on a Stripe SaaS funnel rebuild ✅ 95+ Lighthouse scores with sub-1.8s LCP 🤝 How I Work I stay product-focused, build clean, scalable architecture from day one, and iterate fast without piling up technical debt. As a Front End Developer and Full Stack Developer who's partnered with 40+ founders, CTOs, and product teams, I prefer long-term partnerships over one-off gigs. Looking for a React Developer who thinks in products, not tickets? Let's talk.

I help startups turn SaaS ideas into production-ready products using React, Next.js, Node.js, and AI integrations. Whether you're building an MVP, expanding an existing platform, or adding AI features, I focus on scalable architecture and reliable delivery. 𝗪𝗵𝗼 𝗜 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵: I partner with tech-driven businesses at every stage from seed-stage founders moving fast to enterprise engineering teams solving complex problems at scale. I have built a SaaS MVP that enabled the client to onboard early customers within weeks and validate the product before expanding. Also, I have developed a healthcare workflow platform that reduced manual administrative work through automation and EHR integrations. 1️⃣ 𝗦𝘁𝗮𝗿𝘁𝘂𝗽𝘀 & 𝗠𝗩𝗣 𝗕𝘂𝗶𝗹𝗱𝗲𝗿𝘀: Early-stage founders who need a clean, fast-launch product they actually own. I help validate ideas quickly without sacrificing architecture. 2️⃣ 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝗧𝗲𝗰𝗵 𝗧𝗲𝗮𝗺𝘀: Large organizations needing robust integrations, internal tooling, AI-powered workflows, or modernized legacy systems. 3️⃣ 𝗦𝗮𝗮𝗦 𝗖𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀: B2B and B2C platforms from ideation to production — with billing, auth, onboarding, and analytics built in from day one. 4️⃣ 𝗙𝗶𝗻𝘁𝗲𝗰𝗵: Payment integrations (Stripe, Plaid), financial dashboards, and compliance-aware backends built for trust and reliability. 5️⃣ 𝗛𝗲𝗮𝗹𝘁𝗵𝘁𝗲𝗰𝗵: HIPAA-compliant systems, telemedicine platforms, and patient-facing digital tools that meet regulatory standards. 6️⃣ 𝗔𝗜-𝗙𝗶𝗿𝘀𝘁 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝘀: Companies building on top of LLMs — intelligent agents, copilots, document automation, and NLP workflows. 𝗛𝗲𝗿𝗲'𝘀 𝘄𝗵𝗮𝘁 𝗜 𝗼𝗳𝗳𝗲𝗿: 1️⃣ 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: End-to-end solutions with React, Angular, Node.js, and Python for high-performance web/mobile applications, (Enterprise/SMBs SaaS ideation to execution) 2️⃣ 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Custom AI solutions using OpenAI, TensorFlow, and natural language processing to automate workflows and enhance user experiences. 3️⃣ 𝗚𝗼𝗼𝗴𝗹𝗲 𝗖𝗵𝗿𝗼𝗺𝗲 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻𝘀: Powerful browser tools that boost productivity, streamline processes, and integrate with your existing systems. 4️⃣ 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Secure and decentralized applications (dApps) leveraging Ethereum, Solidity, and smart contracts for transparency and trust. 5️⃣ 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: Cloud-ready applications built with AWS, Docker, and Kubernetes that grow with your business. 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 🔹 Frontend: React, Next.js, Angular, Vue.js, Tailwind CSS 🔹 Mobile app: Flutter, React Native 🔹 Backend: Node.js, Python (Django/Flask), GraphQL 🔹 AI/ML: OpenAI API, TensorFlow, PyTorch, NLP 🔹 Google Chrome Extensions: Manifest V3, JavaScript, WebSockets 🔹 Blockchain: Ethereum, Solidity, Web3.js, Smart Contracts 🔹 Databases: MongoDB, PostgreSQL, Firebase 🔹 DevOps: AWS, Docker, CI/CD, Kubernetes 🔹 Testing: Jest, Cypress, Selenium 𝗣𝗿𝗼𝘃𝗲𝗻 𝗦𝘂𝗰𝗰𝗲𝘀𝘀𝗲𝘀: 🔹 Built AI-powered analytics dashboard resulting in 40% increased user engagement 🔹 Developed Google Chrome extension with 50,000+ active users for productivity automation 🔹 Created full-stack SaaS platform integrating OpenAI for intelligent document processing 🔹 Engineered real-time collaboration tools with WebSocket technology for enterprise clients 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗣𝗿𝗼𝗰𝗲𝘀𝘀: 1️⃣ 𝗗𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆: We'll discuss your vision, requirements, and technical needs. 2️⃣ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Transparent progress tracking with regular demos and feedback cycles. 3️⃣ 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆: Complete handover with documentation, deployment, and ongoing support options. 𝗜𝗳 𝘆𝗼𝘂'𝗿𝗲 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 𝗮 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗵𝗼 𝗰𝗮𝗻 𝘁𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺 𝘆𝗼𝘂𝗿 𝘃𝗶𝘀𝗶𝗼𝗻 𝗶𝗻𝘁𝗼 𝗮 𝗿𝗲𝗮𝗹𝗶𝘁𝘆 𝘄𝗶𝘁𝗵 𝗰𝘂𝘁𝘁𝗶𝗻𝗴-𝗲𝗱𝗴𝗲 𝗔𝗜, 𝗲𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻𝘀, 𝗮𝗻𝗱 𝗳𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀—𝗹𝗲𝘁'𝘀 𝘀𝘁𝗮𝗿𝘁 𝘄𝗶𝘁𝗵 𝗮 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼𝗱𝗮𝘆. TAGS: Full stack development, web development, software engineering, SaaS development, product development, scalable systems, API development, backend development, frontend development, MVP development, startup MVP, rapid prototyping, product launch, CTO as a service, AI development, AI agents, generative AI, LLM integration, OpenAI, LangChain, AI chatbots, automation tools, fintech development, payment integration, Stripe, Plaid, healthcare software, HIPAA compliance, telemedicine, mobile app development, React Native, Expo, Next.js, Node.js, FastAPI, Supabase, PostgreSQL, MongoDB, AWS, Docker, cloud deployment, Google Chrome extension development, automation systems, B2B platforms, B2C SaaS, agile development, end to end development, Application platform Development, Platform Development, App Development

.NET Developer with over 15 years of experience. I help companies build scalable .NET backend and frontend. Worked on projects for Microsoft and Shell. 97% of my clients are satisfied with my work.🧑‍💻Interested in building scalable enterprise and startup systems. Let's create powerful software together! Are you in search of a Senior .NET Developer who can build, scale, and maintain resilient software systems for web, desktop, and cloud-based applications? You’re in the right place. I’m Eugene - a seasoned .NET developer with deep expertise in full-stack architecture, Azure-based services, REST APIs, relational databases, and scalable backend platforms. Over the years, I’ve taken the lead on mission-critical software projects for top-tier clients, including Microsoft and Shell. I’ve delivered a wide array of business solutions using C#, ASP.NET Core, .NET Stack, Entity Framework, SQL Server, PostgreSQL, WPF, WinForms, and Azure App Services. My portfolio includes scalable web platforms, API-driven microservices, high-performance desktop tools, and cloud-native architectures powered by Docker and CI/CD workflows. 👨‍💻 Areas Where I Excel: ✅ Full-Stack .NET Development I craft backend and frontend solutions with ASP.NET Core, .NET 6/8, MVC, Razor Pages, and Web API. I also bring experience with Blazor, Angular, and React, following clean architecture and SOLID design. ✅ Desktop Application Engineering I build Windows apps using WPF, WinForms, MVVM, and Telerik controls. These include hardware integrations, PDF/image processing, and offline functionality. ✅ API Development & Integration I create and connect REST APIs with third-party services such as Stripe, Twilio, SendGrid, and CRM systems. I also develop custom APIs for tools like print services and internal dashboards. ✅ Database Architecture & Optimization I design performant database schemas and manage SQL Server, PostgreSQL, MySQL, and Cosmos DB. I focus on query performance, indexing, and schema evolution. ✅ Cloud & DevOps I deploy apps using Azure App Services, Functions, and CI/CD with GitHub Actions or Azure DevOps. I containerize services with Docker and orchestrate deployments via Kubernetes. ✅ Microservices & Distributed Architecture I build .NET Core microservices with RabbitMQ, Kafka, and Ocelot. These systems serve web and mobile platforms with real-time and asynchronous communication. 🔍 Key Project Highlights: iGaming Platform: Built a real-time casino system using .NET Core, SignalR, Kafka, ScyllaDB, ClickHouse, PostgreSQL, ELK stack, and Power BI. Deployed via Docker on AWS. Loan Automation: Delivered a full-cycle loan platform with .NET Core, OData, EF Core, Azure Service Bus, Hangfire, CosmosDB, Angular, and Power BI. App Marketplace: Developed a microservice-based SaaS platform with RabbitMQ, Stripe, Angular 6, Ocelot, Autofac, and SQL Server. Fleet ERP: Built WPF/Angular tracking ERP with EF6, SQL Server, MEF, GIS, and modules for driver behavior, fuel tracking, and maintenance. Insurance System: Created a UBI platform on ASP.NET Core, AngularJS, Kendo UI, and MS SQL for fraud detection and claims processing. Outlook CRM: Developed CRM integration for Outlook using ASP.NET MVC, AngularJS, Kendo UI, Azure Services, and hosted on IIS. Logistics ERP: Led development of a WPF .NET AngularJS ERP for transport tracking, satellite communication, and business ops. Medical Monitoring: Built a diagnostics app with ASP.NET MVC, DurandalJS, EF, and MS SQL. Hosted securely via IIS. Delivered enterprise-grade .NET solutions: real-time, cloud, ERP, CRM, fintech, and diagnostics systems. 🛠️ My Technical Toolbox: I specialize in C# and the .NET ecosystem, including .NET Core, .NET Framework, Web API, MVC, and WinForms. I rely on EF and LINQ for data access and schema control. My database experience covers MS SQL, PostgreSQL, MySQL, MongoDB, Redis, and Cosmos DB. I manage deployments on AWS and Azure, using Azure DevOps, Docker, and Git. For UIs, I use WPF, Blazor, Angular, and React with TypeScript. I also implement secure CI/CD, API integrations, and scalable infrastructure. Why Teams Work with Me: ✔️ I have over 15 years of professional engineering experience (more than 5 years of experience) ✔️ I possess expertise in both cloud and desktop software solutions ✔️ I have a proven ability to deliver enterprise-level applications ✔️ I possess an in-depth knowledge of DevOps and backend performance tuning ✔️ I can provide AI chatbot (AI Agents) development and workflow automation. ✔️ I have a high ownership, transparency, and quality focus ✔️ My English is fluent, and I can work both with international teams and independently. I collaborate with clients who value architecture, efficiency, and clean code. Whether your project is just starting or mid-scale, I bring clarity, experience, and technical strength to push it forward. Let’s connect and bring your vision to life with robust .NET development.

👋 Hi, I'm Julia from Koitechs - Top Rated Plus Upwork team focused on React, Next.js, Node.js, React Native, TypeScript, Supabase, PostgreSQL, and AI product development. My main goal is save up to 40% of our budget to get a market-ready, stable and scalable product. I help companies hire in-house, CTO-approved engineers who join fast, take ownership, and deliver production-ready software. ✅ 9+ years in software development ✅ 155+ web and mobile projects delivered ✅ 20,500+ Upwork hours in React / Next.js / Node.js / React Native ✅ 75% repeat clients ✅ Engineer matching in 24 hours or less ✅ 2-week trial period ✅ 35+ in-house engineers ✅ 40+ MVPs released ✅ Products supported by our team include platforms with 5M+ daily users 🚀 React / Next.js / Full Stack We build SaaS platforms, marketplaces, dashboards, admin panels, CRMs, AI products, and scalable web apps using React, Next.js, Node.js, TypeScript, Supabase, PostgreSQL, Firebase, MongoDB, REST API, GraphQL, Stripe, OAuth, WebSockets, AWS, Vercel, and Docker. Our team is a strong fit if you need a react developer , web developer , full stack developer , nextjs developer, mern developer, or backend engineer. We help with MVP development, legacy code takeover, architecture modernization, Core Web Vitals, API integrations, payments, auth, subscriptions, user roles, and production launch. 📱 React Native / Mobile We build and support iOS and Android apps using React Native, Expo, Firebase, Supabase, Node.js, and API-driven architecture. We can help if you need a react native developer , mobile app developer, iOS / Android support, app takeover, mobile maintenance, push notifications, App Store / Google Play releases, payments, or backend integrations. We also support mixed mobile environments with flutter developer , android developer , backend developer, AI developer, or web developer. 🤖 AI SaaS / AI App Development We build AI-powered products connected to real business workflows. Experience: AI SaaS, AI MVPs, AI chatbot development, AI agent development, OpenAI API, Claude API, LLM prompt engineering, RAG, automation, web scraping, AI model integration, copilots, and AI workflow validation. AI stack: OpenAI API, Claude API, LLMs, RAG, AI Agent Development, AI Chatbot, Generative AI, Python, FastAPI, Supabase, PostgreSQL, pgvector, automation, data analysis, web scraping. 🧩 Mixed-Stack Support Our core focus is React, Next.js, Node.js, React Native, TypeScript, Supabase, and AI. We also support products involving wordpress , vue , angular , python developer , scala developer , flutter developer , android developer , mern , and other web/mobile technologies. 🏆 Industries 📦 Logistics - 5+ projects: tracking, shipment dashboards, carrier/shipper workflows, maps, route visibility. 🏥 HealthTech -4+ projects: medical booking, clinic platforms, patient flows, admin systems. 🛒 Marketplaces & E-commerce - 15+ projects: multi-vendor products, Stripe, subscriptions, bidding, complex search. 🏠 PropTech / Real Estate -5+ projects: listings, booking flows, agent dashboards, rental platforms. 🤖 AI Startups - 25+ AI products/features: AI SaaS, chatbots, agents, copilots, OpenAI / Claude integrations. 💰 FinTech - 3+ projects: Stripe Connect, billing, payment flows, invoicing. 🎮 Gaming - 5+ projects, including 2 major global gaming brands: dashboards, analytics, real-time interactions. 📚 EdTech - 5+ projects: student dashboards, progress tracking, content platforms. 📣 MarTech - 1 global market-leading project: dashboards, analytics, segmentation, workflows. ⚽ SportsTech - 10+ projects: live data, dashboards, events, rankings, stats, mobile apps. 📌 How We Work 1️⃣ Discovery & technical planning 2️⃣ Engineer matching within 24h 3️⃣ 2-week trial period 4️⃣ Weekly demos and reports 5️⃣ CTO-approved delivery with code review and QA 6️⃣ Long-term support after launch 🚀 Building a SaaS, MVP, marketplace, React app, Next.js platform, React Native app, AI product, or mixed-stack web/mobile platform? Click “Invite” or “Hire” - I’ll help you clear the estimate or discovery phase within 24 hours or less.