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Senior Full Stack Engineer, Technical Lead, and Web3 developer with 6+ years of experience building high-performance blockchain, AI, and distributed systems from concept to production. I specialize in Web3 product development, smart contract architecture, DeFi infrastructure, NFT marketplaces, token launchpads, crypto wallets, GameFi platforms, Telegram Mini Apps, and on-chain reward ecosystems. My technical stack includes Solidity, EVM-compatible chains, TON, Ethers.js, Web3.js, account abstraction, smart contract integrations, and blockchain-based payment systems. On the backend, I design scalable, event-driven architectures using NestJS, PostgreSQL, Redis, RabbitMQ, Kafka, and WebSockets, supporting real-time applications, high transaction throughput, and millions of user interactions. I focus on building secure, fault-tolerant systems that remain stable under rapid growth and heavy load. My AI background includes machine learning, speech recognition, NLP, intent detection, LLM integrations, workflow automation, and AI-powered applications for enterprise clients in banking, telecommunications, and digital products. Over the past several years, I have led and delivered 20+ products across Web3, AI, FinTech, and consumer applications, including platforms with 1M+ users, multi-million-dollar transaction volumes, NFT ecosystems, token launch platforms, crypto casinos, anti-detect browsers, and real-time gaming infrastructure. I work directly with founders and product teams, helping transform ideas into production-ready software through technical leadership, architecture design, rapid MVP delivery, and long-term product scaling. Core Expertise: • Web3 & Blockchain Development • Smart Contract Architecture (Solidity, EVM, TON) • DeFi, NFT, GameFi & Launchpad Platforms • Telegram Mini Apps & High-Load Systems • AI Applications & LLM Integrations • Distributed Systems & Event-Driven Architecture • Real-Time Infrastructure & WebSockets • Product Architecture & Technical Leadership • MVP Development & Startup Execution • Performance Optimization & Scalability Engineering From MVPs launched in under 30 days to platforms serving millions of users, I focus on building software that is scalable, secure, and ready for growth from day one.

I build real world AI systems | 7 years blending deep learning, automation, and fullstack execution to ship tools that actually move the needle. 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐂𝐚𝐧 𝐇𝐢𝐫𝐞 𝐌𝐞 𝐅𝐨𝐫 ▷ MVP Development ▷ Website Redesign (Modern UI + Blazing Performance) ▷ AI Powered Chatbot Development (OpenAI, Rasa, Custom NLP) ▷ Microservices Architecture and Rebuilds ▷ AI Powered SaaS Platforms ▷ Data Engineering Pipelines and ETL Workflows ▷ Predictive Dashboards and Business Intelligence ▷ E-commerce AI Integrations (Search · Recommenders · Analytics) ▷ Rebuilding Legacy Apps with Modern AI 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 React · Angular · JavaScript · NestJs · Node · Python · Node.js · Django · Vue.js · PostgreSQL · Redis · Docker · AWS · GCP · AI · Express.js · TensorFlow, PyTorch · TensorFlow · PyTorch · Hugging Face · OpenAI · LangChain · FastAPI · 𝐖𝐡𝐲 𝐭𝐞𝐚𝐦𝐬/𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐦𝐞 ➤ I solve real problems with AI ➤ I own delivery - from first commit to live deployment ➤ I ship fast and think in systems. Wether you are adding intelligence to your product or launching from scratch. I bring the clarity, the speed, and the engineering firepower to ship.

I am a seasoned database professional with more than 15 years of specialized experience, primarily focused on MySQL and MariaDB, both replication as well as Galera Cluster and InnoDB Cluster. Those skills are complemented by proficiency in PostgreSQL, ClickHouse, Redis, and MongoDB. My expertise lies in database performance analysis and optimization, as well as the design and implementation of robust, high-availability architectures. I possess in-depth knowledge of load balancing technologies, including ProxySQL, MaxScale and HAProxy. On PostgreSQL side I've been working with pgBouncer and pgPool. I have successfully managed complex systems in both AWS and on-premises environments, ensuring exceptional reliability and efficiency.

I am a software engineer with 10 years of experience in software development using J2EE and FE technologies. I have a background in building web services, scalable architectures, cloud technologies, and data management. Core experience: • Web Services, Microservices, REST APIs • Agile Scalable Architectures, High Load Systems, Cloud Technologies, Data Management • Java Performance optimization, Bottlenecks, Concurrency and Multithreading • Front-End, Mobile Application and Desktop Development • Agile Development, CI/CD practices, Security Compliance and more Key skills: • Java · Kotlin · Concurrency & Multithreading · JVM & GC tuning • Spring Framework · RESTful API · Security & OAuth 2.0 · SSL · DNS • Micro services · DigitalOcean · AWS · ActiveMQ · Kafka · RabbitMQ • AI, MCP, prompt engineering • MySQL · PostgreSQL · Oracle · MongoDB · Redis · Hibernate · CRUD & POJO • JS/TS · React · Angular · jQuery · Bootstrap · Thymeleaf · Websockets · SPA · Node.js · Vue.js • RCP · OSGi · EMF · Cross-Platform Apps · SWT • Financial Protocols: FIX, FIX 4.2, FIX 5.0, Arrowhead, Swift I’m proactive and self-motivated developer, energetic and driven by engineering challenges which add maximum value to company and users. I will gladly be a part of a professional team that values honesty and good-natured communication

⭐ Fractional CTO & Technical Advisor helping SaaS startups build, ship and grow AI-powered products - from MVP to enterprise. 🚀 Harvard-certified AI Developer | 10+ years Full Stack Development | Senior React, Python & Node.js Engineer 🏆 100% client satisfaction | $1M+ saved via AI workflows | 40+ projects: FinTech, Healthcare, EdTech, LegalTech & SaaS 🎯 WHO I AM & HOW I HELP I'm a Fractional CTO and AI architect who partners with SaaS founders and non-technical CEOs to turn product vision into production-ready software. I bridge strategy and engineering - right architecture, right team, right AI integrations, without a full-time CTO cost. I solve problems like: → "We need a SaaS product but have no technical co-founder" → "We want to integrate LLMs, RAG, or AI automation but don't know where to start" → "Our architecture won't scale and development is too slow" → "We need to modernize our stack and migrate to AWS or Azure" 🏅 MY EXPERTISE Case 1 - Fractional CTO for a LegalTech SaaS (200+ law firms) Built multi-tenant SaaS: NestJS, Next.js, React, TypeScript, PostgreSQL, Azure. Designed an AI Augmentation Layer: document extraction (Azure Document Intelligence), RAG research (vector store), AI-assisted drafting, workflow automation. Managed infra with Terraform and led architecture as Fractional CTO & Solution Architect. Case 2 - Technical Advisor for a Healthcare Monitoring Platform Built compliance-grade SaaS: Python, FastAPI, PostgreSQL, WebSocket alerts. Frontend: React. HIPAA/GDPR compliance, Docker CI/CD. Advised on ML pipelines, computer vision models and served as AI Consultant & Virtual CTO. Case 3 - Full Stack AI Developer for an EdTech LMS Built an LMS: React, TypeScript, Supabase, AWS (Cognito, Lambda). Implemented NLP personalization, AI Models for recommendations and a Moodle chatbot plugin. Focus: LMS integrations and data-driven learning. Case 4 - Technical Advisor for a FinTech AI Startup Led engineering: NestJS, Azure SQL, Service Bus. React frontend, AI content personalization, gamification. Delivered Product Development & Project Management as Solution Architect & AI engineer. Case 5 - AI Engineer: RAG, NLP & Speech Systems Built RAG knowledge platforms (Pinecone, OpenAI), speech intelligence (Deepgram, LangChain, FAISS), CRM automation (Anthropic/Claude). Delivered AI Agent Development, Agentic AI patterns and AI Model Integration. Case 6 - Full Stack Engineer for CRM & Auth Platform Microservices: gRPC, MongoDB, Neo4j. Multi-tenant auth with Azure AD. Acted as full stack developer and Cloud Architect advisor, improving data analysis pipelines. ⚡ WHERE I CAN BE HELPFUL ✅ Fractional CTO - strategy, leadership, team building for SaaS startups, virtual CTO services ✅ Technical Advisory - code audits, architecture reviews, cloud migration (AWS/Azure), Cloud Architect guidance ✅ Full Stack Development - React, Next.js, Node.js, Python, TypeScript, JavaScript, Typescript, React Native, React for mobile and Web development ✅ AI & LLM Integration - RAG, LLM agents, NLP (Natural Language Processing), Computer Vision, ML, chatbots, Generative AI, AI Agent Development ✅ SaaS Architecture - multi-tenant, API-first, compliance, scaling, Software Architecture & Design ✅ Data & Analytics - SQL, pipelines, data visualization, ML analytics, data science, data analysis ✅ DevOps - AWS, Azure, Terraform, Docker, ArgoCD, CI/CD, Firebase support for mobile/web ✅ Mobile App Development - React Native, Android App Development, cross-platform SAAS mobile features 👨🏻‍💻 TOOLS & TECHNOLOGIES Frontend: React, Next.js, Angular, Vue.js, HTML, CSS, JavaScript, TypeScript, Tailwind, MUI, React Native Backend: Node.js, NestJS, Express, Python, FastAPI, Django, Flask, GraphQL AI/ML: GPT, Claude, RAG, LangChain, Pinecone, FAISS, NLP, Deepgram, PyTorch, TensorFlow, ML, Deep learning, Deep Neural Network Cloud: AWS (Cognito, Lambda, EKS, S3), Azure (AI Foundry, Document Intelligence, APIM), Amazon Web Services, DB: PostgreSQL, MongoDB, SQL, Neo4j, Pinecone, Qdrant DevOps: Docker, Terraform, Pulumi, ArgoCD APIs: OpenAI, Anthropic, Stripe, Pipedrive, MS Graph, REST, GraphQL, gRPC 🔄 HOW WE WORK TOGETHER 1. Discovery Call (Free) - We discuss goals, challenges and product vision 2. Technical Audit & Roadmap - I review your stack and deliver a clear plan (Product Development, Solution Architecture, AI Development scope) 3. Build & Ship - Weekly milestones, production-quality code (AI Automation, agentic workflows) 4. Scale & Optimize - Performance tuning, AI automation, cost reduction, growth prep 🟢 CORE FOCUS AREAS • SaaS product development (multi-tenant, API-first, AI-native) • AI-powered business automation (LLMs, RAG, NLP, workflows) • Healthcare & MedTech (compliance, real-time monitoring, HIPAA/GDPR) • LegalTech (document intelligence, workflow automation, AI research) • EdTech & LMS platforms (ML, personalized learning, analytics) • API integration & platform scaling (CRM, ERP, real-time sync)

SAP consultant & developer with 20 years of development experience, with a strong focus on manufacturing, logistics and retail areas. I have worked mostly as a software architect/developer, creating several UI5/AddOns solutions that simplify and streamline operations for different business types (machinery, services, textile/footwear, retail, shopfloor, etc) for SAP R3 and B1 systems. Explore my Upwork profile to learn about some SAP projects I have contributed to as a logistics/financial consultant, as well as AddOns/SAPUI5 apps I designed and developed for customers around the world (Portugal, UK, US, Angola, etc).