I build full products. I have 8+ years of experience in the Meteor framework in the following technologies: Expertise in summary: ✔︎ CTO partner: can take you from your business idea to revenue. ✔︎ Frontend: ReactJs, Blaze, HandleBar, ES6, ES7, jQuery, AngularJS 2+, D3.js ✔︎ Mobile(Hybrid): Flutter, Meteor , React Native ✔︎ Backend: Node.js, Dart, NextJS, SailsJS, Meteor, Apollo GraphQL, AWS, ASP.NET MVC ✔︎ Database: MongoDB, SQL ✔︎ Web Design: HTML5, CSS3(SASS, LESS), TwitterBootstrap, Material UI ✔︎ Third-Party API integration: Facebook, Twitter, Instagram, G+, Amazon, Paypal, CCAvenue, Stripe, Google Map ✔︎ Teamwork: BitBucket, Github, SVN, Trello, Jira, Asana, ClickUP ✔︎ Server Manage: AWS EC2, AWS S3, instance manage, Digital Ocean, NGiNX ✔︎ Data Analysis: D3, HighChart, NVD3, Real-Time Dashboard builder Core Skills: * Excellent understanding of overall all type of application * Excellent knowledge of Healthcare Domain, education Domain * I can define an approach at best level * Excellent understanding of the Software Development Life Cycle * Strong organizational skills and attention to detail. * Excellent communication skills. I do my best to help my client achieve success and I consider my client’s success to be my own.

Experienced and passionate CTO, VP of Engineering, tech lead, and serial entrepreneur. Fractional CTO/Tech lead that supports you, your project, and your company in every timezone. Get help with architecture, development, team management, DevOps, building decentralized load-balanced infrastructure, and everything in between. 👌 Expertise in: - Team building and training - Software development methodologies - Financial services, transaction processing, card issuance and management - Banking APIs, payment services integrations, SEPA, IBAN - Disaster recovery - General consulting on Open Source, Web Apps, Servers, backend, micro-services, horizontal scaling, high-load, DevOps, OpSec - Planning architectures for future websites/apps/servers aligned with business goals 📈 Achievements: - Scaled software development company from 30 to 200 developers ensuring all teams can work in parallel with TOP performance (2024-2025) - NeoBank: Built team, guidelines, compliant infrastructure, and launched modern banking application from 0 to issuing cards to users within 9 months; Went through Visa and MasterCard accelerators (2022-2024) - IT Consulting services: Built efficient team that follows strict security and best practices guidelines (since 2016) - Deep-tech SaaS: Built team and service with globally distributed CDN (HL, HA) (since 2015) - Government services app: Managed team, built guidelines and compliant software for the GovTech that used by 1m+ daily users (2013) - Live-streaming service: Built team, infrastructure, and video service (VoD & RTMP) used by 2 millions simultaneous users (2012) 👷‍♂️ DevOps: - Horizontally scaled and distributed infrastructures - Co-located bare-metal servers, Web-servers, Could - High-load, high-availability, and cross-border infrastructure - Databases & Linux web servers clusters, shards (horizontal and vertical scaling) - Custom automated deployments & backups - Consultancy about protection against DDoS, hacks, and other attacks 👨‍🏫 Mentorship (for individuals and companies): - Education - Project/Team mentorship - Pair-programming - Code-review - Guidelines and best-practices application - Project planning - Architecture planning 🎙 Speaker: - Meteor Impact 2025 - Meteor Impact 2020 - DeveloperWeek 2019 🤝 Social & Open Source: - GitHub: @veliovgroup - GitHub: @dr-dimitru - NPM: @dr.dimitru - Atmosphere/Packosphere: @ostrio - StackOverflow: @dr-dimitru - Twitter: @smart_egg

I am Expert Three.js AI Full Stack Engineer with strong experience building SaaS and PaaS products, combining GenAI, LLMs, and scalable full-stack systems. With 9+ years of experience, I have delivered high-performance web and mobile applications, AI-integrated dashboards, and interactive platforms across multiple industries. Expertise includes React, React Native, FastAPI, Node.js, LangChain, LangGraph, Pinecone, and cloud deployment. I also bring deep frontend expertise in Three.js, React Three Fiber, WebGL, and GSAP, building immersive 3D experiences, real-time visualizations, and production-ready interfaces. From AI workflow automation and chat-based platforms to 3D configurators and enterprise systems, I focus on building reliable, efficient, 🏆 Top Rated 💎 9+ Years of Experience 🚀 Delivered 12+ Large-Scale Applications 📈 Strong Long-Term Client Relationships 💲 Cost-Optimized Solutions 💼 Expert in AI & Full-Stack Development 🎯 Proven Track Record of Meeting Deadlines 🔒 Security & Compliance Focused 🌐 Expertise in AWS, Azure, GCP & Cloud Deployments 📊 Data Visualization & Dashboard Development 🤖 Generative AI, LLM & Workflow Automation 🔍 Attention to Detail & Reliable Deliveries 🖌️ UI/UX Optimization & Product Thinking 💡 Creative Problem Solver 📚 Continuously Adapting to Latest Technologies 🛠️ Strong in React, Three.js, Python, Node.js 📜 Dynamic PDF / Report Generation 🌟 Client-Focused & Result-Oriented Approach Expertise 🚀🚀 : Full Stack | Three.js | WebGL | React Three Fiber | GSAP | Generative AI | LLM Integration | LangChain | LangGraph | ChatGPT API | OpenAI | RAG Systems | Pinecone | React.js | Next.js | Vue.js | Node.js | FastAPI | Python | TypeScript | React Native | AWS | Docker | SaaS | REST API | Data Visualization About Me 🔍🔍 : As a Senior Expert Engineer with over 9+ years of experience, I specialize in designing and delivering innovative, high-impact solutions across diverse domains, including: Artificial Intelligence & Machine Learning Computer Vision Applications Enterprise Resource Planning (ERP) Systems Customer Relationship Management (CRM) Solutions Real-Time Web & Mobile Applications Rapid MVP Development for Startups With a strong focus on scalability, performance, and user-centric design, I consistently drive projects from concept to successful delivery. I specialize in crafting custom product solutions tailored to client needs and have successfully collaborated with top-tier multinational firms. My approach emphasizes staying updated with the latest technologies and adhering to industry best practices, ensuring the delivery of cutting-edge, scalable software solutions. Let's work together to turn your vision into reality! Stack Competencies: 1️⃣ Full-Stack Developer 2️⃣ Front-End Developer 3️⃣ Back-End Developer 🌐 Web Development 📱 Mobile App Development 🛒 eCommerce Development 🛍️ Shopify Developer 🤖 Artificial Intelligence (AI) Development ☁️ SaaS Development 🔧 Custom Software Development 🖌️ HTML/CSS Development ⚙️ MEAN Stack Developer 🛠️ MERN Stack Developer 🔗 API Integration 🎨 UX/UI Design 📱 Responsive Design 📈 Progressive Web App (PWA) 📊 Data Visualization 🔍 Search Engine Optimization (SEO) Management Key Competencies: 1- Project & Team Management 2- Project Management: Mastery in project management tools and techniques. 3- Team Collaboration: Demonstrated proficiency in fostering cross-site team collaborations. 4- Development Life-cycles: Comprehensive understanding of software development life-cycles. 5- Strategic Execution: Strategic planning, execution, and information presentation. Developed Product Expertise : 1- ERP Systems 2- Learning Management Systems (LMS) 3- 3D Web Applications 4- AI-Based Web Applications 5- Web App Tools 6- Mobile Applications Technical Proficiency (Frameworks & Languages): Front-end: React Native, React JS (ES6, ES7), Vue JS, Three.js Back-end: Node JS, Meteor JS, Electron JS, Python, Fast API, Flask Cloud & Infrastructure Cloud Services: Proficient with AWS and Azure. Containerization: Adept at using Docker. Integration Expertise Seamless integration of payment gateways (Stripe, PayPal). RESTful APIs and advanced authorization mechanisms. Specialized Skills Designing scalable front-end architectures. Leveraging serverless services and batch jobs on Azure. Open-source rapid prototyping with isomorphic frameworks. In-depth familiarity with React-Redux, React Context-API, and MM_detection libraries. Mastery in Three.js for crafting immersive 3D graphics via WebGL. Industry Insights: I maintain a proactive approach by consistently monitoring industry trends and technological evolution. This ensures that the solutions I architect are not only current but also future-proof, guaranteeing longevity and adaptability. Let's talk about what you're building happy to review your project and suggest the best technical approach.

Hi there! I'm an independent freelance developer with over 7 years of experience building high-quality web applications. I specialize in crafting robust, scalable, and maintainable solutions that meet real-world business needs. Clean code, thoughtful architecture, and long-term maintainability are my priorities in every project. I’m currently open to long-term collaboration opportunities where I can bring value as a dedicated, full-stack developer. 👨🏻‍💻 My Skill Set 🔧 Backend Development Languages & Frameworks: Node.js (Express, NestJS, MeteorJS), Python (Django, Flask, FastAPI), PHP (Laravel), Golang (Gin, Fiber, Echo) Databases: MongoDB, MySQL, PostgreSQL APIs: REST, GraphQL DevOps & Cloud: AWS, Ansible, Terraform, Bash scripting 🎨 Frontend Development Frameworks: React (Redux, Redux Saga, Redux Thunk, Zustand, ImmerJS, Redux Persist, Provider), Next.js, Gatsby.js, Vue.js UI & Styling: HTML5, CSS3 (Sass, Less, SCSS), TailwindCSS, Bootstrap, Material-UI Languages: JavaScript, jQuery Others: GraphQL 🛍️ eCommerce & CMS Shopify WordPress Magento (v1 & v2) Let’s build something great together. I’m passionate about working on meaningful products and establishing long-term partnerships.

Why Work with Me? With over 113 successfully delivered projects, 7,100+ hours logged, and $200,000+ earnings, I bring deep technical mastery and a client-first mindset. My mission: deliver stellar outcomes and earn back the Top Rated Plus badge. Core Strengths Full-Stack Expertise: Node.js, Laravel, React, Vue, Angular, RESTful APIs. DevOps & Backend Scalability: AWS, Docker, CI/CD (GitHub Actions), NGINX, PM2. Database Proficiency: MySQL, MongoDB, schema optimization, high-performance tuning. Best Practices: Test-driven development, maintainable code, automated deployments. Proven Track Record 5.0-rated projects in AWS, CloudCompute, full-stack redesigns, DoS defense, and MySQL upgrades. Consistently praised for reliability, technical acumen, and responsiveness. How I Work Proactive Planning: Clear deliverables, timeline alignment, thoughtful execution. Reliable Communication: Weekly or real-time updates, transparent collaboration, aligned with EST/New York time. Quality Delivery: Clean, future-proof code and a problem-solving mindset focused on your success. Let’s Build Your Next Success Story I’m selectively accepting new clients to give full attention and deliver exactly what you need—whether launching your first Upwork project or optimizing an existing system. I’m committed to earning your 5-star review. Next Step? Send me a quick message or calendar link to jump on a free call. Let’s align on goals, share ideas, and get your project off to a stellar start.

Struggling to build a scalable web app that doesn’t break under real users? I help startups and businesses build fast, secure, and production-ready MEAN/MERN applications using React, Node.js, and MongoDB so you can focus on growth, not bugs. ✅ What you get: Clean, scalable full-stack architecture Fast and responsive React frontends Secure and optimized Node.js APIs Reliable MongoDB database design 💼 Proven Results: Built a change management system used by enterprise teams Developed backend systems handling complex survey workflows Delivered multiple 5⭐ projects with 100% client satisfaction ⚙️ My Process: Understand your business goal Design a scalable architecture Develop with clean, maintainable code Test + optimize performance Deploy & support 🎯 Whether you need: Full web app development Backend APIs Bug fixing or scaling existing apps I’m here to help. 👉 Send me a message and let’s discuss your project.

If you’re building an MVP, scaling an existing platform, or dealing with a system that keeps breaking as you grow, I can help you fix it and move fast without wasting time or rewriting everything. I help startups and product teams build scalable applications and fix systems that are slowing down growth. I work as a Tech Lead, focusing on architecture, performance, and scalability, making sure your product is built correctly from the start, not patched later. I’ve worked on production systems across React and Node.js, leading development decisions, improving stability, and helping teams ship faster with fewer technical issues.

Trusted by 25+ global clients with 100% job success and Top Rated status. 8+ years shipping production SaaS, AI agents, and real-time systems. 1,200+ hours of hands-on coding. $100K+ in client results. Your Problem: You have a great business idea but traditional development takes 6-12 months and costs a fortune. You're losing market opportunity while waiting. Or you've got a prototype that's falling apart under real users. Or you need AI automation but don't know where to start. You're stuck between slow agencies and junior developers who disappear. My Promise: I turn your idea into a production-ready MVP in 2-4 weeks. Not a demo. Not a prototype. A real, scalable product your customers can use tomorrow. I handle everything end-to-end: architecture, design, development, testing, deployment. You get one person you can trust who actually ships. What You Get: 🏗️ Production Architecture : Scalable from day one. Built to handle growth without falling apart. ⚙️ Full Ownership : I don't hand you off halfway. I'm here from your first idea through launch and beyond. 📱 Web, Mobile, AI : React, Next.js, React Native, Python backends, real-time systems, AI agents, integrations with Stripe, Plaid, Apple HealthKit. 🚀 Real Speed : MVP in 2-4 weeks. Actual working product. ✅ Quality : Multiple testing sprints, performance optimization, security hardening. 98% user satisfaction. The Stack: Backend: Python, Node.js, NestJS | Frontend: React, Next.js, React Native | Real-time: WebSockets, event-driven systems | Databases: PostgreSQL, MongoDB, Vector DBs for AI | Cloud: AWS, GCP, Vercel, Firebase | Integrations: Stripe, Plaid, Airbnb, Apple HealthKit, Google Fit, Third-party APIs Proven Work : Built & Live Right Now: GYMYG - Fitness & wellness platform (USA). Live trainer + client iOS/Android apps, 1-on-1 video coaching, real-time workouts, subscriptions, analytics. Handling thousands of active users. We Step Together - Fitness fundraising app (Australia). Apple HealthKit + Google Fit integration, step-tracking donations, Stripe payments, real-time campaign tracking. Live on App Store and Play Store. Honest Dog - Pet marketplace (Germany). Multi-role marketplace (buyers, breeders, shelters), advanced search, real-time messaging, Stripe/PayPal payments, reviews, multi-language. Production marketplace with real transactions. Mile Matcher - Running & GPS app (Australia). Real-time GPS tracking, race matchmaking, AI bot races, friend challenges. Live app with active users. Property Portfolio SaaS - Subscription-based property management with Stripe billing, tenant tracking, financial analytics, Plaid bank sync, Airbnb integration. Production SaaS with paying customers. Alpha Insurance - Health claims platform. Secure document uploads, real-time claim tracking, role-based dashboards, compliance-ready. Live system handling sensitive data. Community Parking Hub (Denmark) - Multi-role marketplace with booking, payment processing, fraud monitoring, real-time notifications. Live in production. Plus: TapNFC (QR/NFC profile management), Certificate Management System, Zhapee (multi-vendor marketplace), Rec-X (macOS recording app), and more. How I Work: Real partnerships. Weekly check-ins. Async updates. You see working features every 2 weeks, not a big bang at the end. I answer questions, I adapt, I deliver. Risk Mitigation & Your Safety Net: Phase-Based Delivery Lock Phase 1 at 2-4 weeks fixed cost. See it works before Phase 2. Stop anytime, no trap. Money-Back Guarantee MVP doesn't meet scope by week 4? You pay nothing. Zero risk. You Own the Code 100% yours. Full documentation, deployment scripts. Move to another dev anytime. Two-Week Escape First two weeks don't work? Walk away, no penalty. Weekly Transparency Video calls every 7 days. Issues flagged by day 5, not day 20. Production-Ready & Tested Functional, security, load testing. Real product, not prototype. Full Documentation Another developer can understand your code. For Founders & Agencies: You need someone who ships. Not someone who talks about shipping. Not someone who disappears after launch. Someone who understands

🏆 𝟏𝟓 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 || 🥇 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝑵𝒆𝒆𝒅 𝒂 𝒔𝒆𝒏𝒊𝒐𝒓 𝒆𝒏𝒈𝒊𝒏𝒆𝒆𝒓 𝒕𝒐 𝒃𝒖𝒊𝒍𝒅 𝒐𝒓 𝒔𝒄𝒂𝒍𝒆 𝒚𝒐𝒖𝒓 𝒘𝒆𝒃 𝒐𝒓 𝒎𝒐𝒃𝒊𝒍𝒆 𝒂𝒑𝒑? I help startups and businesses turn ideas into scalable, production-ready SaaS products. With 10+ years of experience, $300K+ earned on Upwork, and a 100% Job Success score, I have delivered high-quality solutions for startups and growing companies worldwide. I have also worked with companies in different industries, including health tech and ad tech. I contributed to Yas.life, a health tech startup, and I am currently working in the ad tech space with AppIQ Global, building and improving data-driven platforms. What I can help you with: ✔ Full-stack SaaS development (React, Node.js, MongoDB) ✔ Mobile apps (React Native, Flutter) ✔ AI-enabled features and integrations ✔ API development and third-party integrations ✔ Scaling and improving existing applications Proven experience: Built and scaled multiple SaaS platforms Long-term collaborations with startups and teams Consistent 5-star feedback and repeat clients Tech stack: React, Node.js, TypeScript, MongoDB, AWS, Firebase, GraphQL React Native, Flutter, Angular, Laravel How I work: I focus on clear communication, clean architecture, and delivering reliable, maintainable code. Whether starting from scratch or improving an existing system, I make sure your product is built for long-term success. 𝑳𝒆𝒕’𝒔 𝒅𝒊𝒔𝒄𝒖𝒔𝒔 𝒚𝒐𝒖𝒓 𝒑𝒓𝒐𝒋𝒆𝒄𝒕. 𝑰 𝒂𝒎 𝒂𝒗𝒂𝒊𝒍𝒂𝒃𝒍𝒆 𝒂𝒏𝒅 𝒓𝒆𝒂𝒅𝒚 𝒕𝒐 𝒉𝒆𝒍𝒑.

My background is M.S. in electronic and IT. I've managed several startups and worked in numerous fields such as: military, aeronautics, Saas, software and mobile development, computer graphics, digital cinema, 3D content, video animation, computer security, computer forensics, managed service provider, lean startup... I'm fluent in English and French native speaker, but any projects allow me to enhance my knowledge. I've delivered web and mobile apps based on MeteorJS framework, VulcanJS/GraphQL, react and react-native UI (including inApp purchase). I've had many radio shows, advertising and voice-over in French. I pass the HSK2 Chinese exam and still studying Chinese because I have a personal interest in martial arts such as tai ji chuan/qi gong. I can be very reactive as I manage my time and deliver quickly if it is required. But as a careful craftsman, the more time you give, the better the result should be. For translation, I don't want to correct "google translated" work, just give me the original text in plain English.