🚀 Is your MVP taking months instead of weeks? 💡 Tired of developers who don’t understand your business and just write code? I help startup founders launch production-ready MVPs in 𝟮–𝟯 𝘄𝗲𝗲𝗸𝘀, using a clear, 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀-𝗼𝗿𝗶𝗲𝗻𝘁𝗲𝗱 development approach. As an Upwork Expert-Vetted React Front End Developer with a Master’s in Computer Science and 7+ years of experience building scalable SaaS platforms, dashboards, and custom APIs, I translate complex tech into clear product decisions that drive results. I’ve worked with startups from idea stage to Series B, as well as enterprise clients like 𝗦𝗮𝗺𝘀𝘂𝗻𝗴, 𝗛𝗼𝗿𝗶𝘇𝗼𝗻𝘀, and 𝗕𝗲𝗻𝘁𝗹𝗲𝘆 - always focusing on fast delivery, clean architecture, and measurable outcomes. 💬 Clients’ Feedback: “𝘎𝘳𝘦𝘢𝘵 𝘦𝘹𝘱𝘦𝘳𝘪𝘦𝘯𝘤𝘦 𝘸𝘰𝘳𝘬𝘪𝘯𝘨 𝘸𝘪𝘵𝘩 𝘒𝘺𝘳𝘺𝘭𝘰! 𝘏𝘦 𝘥𝘦𝘭𝘪𝘷𝘦𝘳𝘦𝘥 𝘢 𝘩𝘪𝘨𝘩-𝘲𝘶𝘢𝘭𝘪𝘵𝘺 𝘙𝘦𝘢𝘤𝘵 + 𝘛𝘺𝘱𝘦𝘚𝘤𝘳𝘪𝘱𝘵 𝘧𝘳𝘰𝘯𝘵𝘦𝘯𝘥 𝘴𝘵𝘺𝘭𝘦𝘥 𝘸𝘪𝘵𝘩 𝘛𝘢𝘪𝘭𝘸𝘪𝘯𝘥 𝘊𝘚𝘚, 𝘣𝘶𝘪𝘭𝘵 𝘸𝘪𝘵𝘩 𝘤𝘭𝘦𝘢𝘯 𝘤𝘰𝘥𝘦 𝘢𝘯𝘥 𝘴𝘵𝘳𝘰𝘯𝘨 𝘢𝘵𝘵𝘦𝘯𝘵𝘪𝘰𝘯 𝘵𝘰 𝘥𝘦𝘵𝘢𝘪𝘭. 𝘊𝘰𝘮𝘮𝘶𝘯𝘪𝘤𝘢𝘵𝘪𝘰𝘯 𝘸𝘢𝘴 𝘴𝘮𝘰𝘰𝘵𝘩 𝘢𝘯𝘥 𝘥𝘦𝘭𝘪𝘷𝘦𝘳𝘺 𝘰𝘯 𝘵𝘪𝘮𝘦 - 𝘩𝘪𝘨𝘩𝘭𝘺 𝘳𝘦𝘤𝘰𝘮𝘮𝘦𝘯𝘥!” “𝘒𝘺𝘳𝘺𝘭𝘰 𝘥𝘦𝘭𝘪𝘷𝘦𝘳𝘦𝘥 𝘤𝘭𝘦𝘢𝘯, 𝘴𝘤𝘢𝘭𝘢𝘣𝘭𝘦 𝘤𝘰𝘥𝘦 𝘢𝘯𝘥 𝘩𝘢𝘯𝘥𝘭𝘦𝘥 𝘧𝘳𝘰𝘯𝘵-𝘦𝘯𝘥 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵 𝘸𝘪𝘵𝘩 𝘱𝘳𝘦𝘤𝘪𝘴𝘪𝘰𝘯. 𝘊𝘰𝘮𝘮𝘶𝘯𝘪𝘤𝘢𝘵𝘪𝘰𝘯 𝘸𝘢𝘴 𝘴𝘮𝘰𝘰𝘵𝘩, 𝘢𝘯𝘥 𝘩𝘦 𝘸𝘢𝘴 𝘱𝘳𝘰𝘢𝘤𝘵𝘪𝘷𝘦 𝘪𝘯 𝘴𝘰𝘭𝘷𝘪𝘯𝘨 𝘵𝘦𝘤𝘩𝘯𝘪𝘤𝘢𝘭 𝘤𝘩𝘢𝘭𝘭𝘦𝘯𝘨𝘦𝘴. 𝘏𝘪𝘨𝘩𝘭𝘺 𝘳𝘦𝘤𝘰𝘮𝘮𝘦𝘯𝘥𝘦𝘥 𝘧𝘰𝘳 𝘸𝘦𝘣 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵, 𝘈𝘗𝘐 𝘪𝘯𝘵𝘦𝘨𝘳𝘢𝘵𝘪𝘰𝘯, 𝘢𝘯𝘥 𝘱𝘦𝘳𝘧𝘰𝘳𝘮𝘢𝘯𝘤𝘦-𝘧𝘰𝘤𝘶𝘴𝘦𝘥 𝘦𝘯𝘨𝘪𝘯𝘦𝘦𝘳𝘪𝘯𝘨 𝘱𝘳𝘰𝘫𝘦𝘤𝘵𝘴.” “𝘏𝘢𝘱𝘱𝘺 𝘸𝘪𝘵𝘩 𝘴𝘱𝘦𝘦𝘥 𝘢𝘯𝘥 𝘲𝘶𝘢𝘭𝘪𝘵𝘺!” Here’s what my clients value most: 🎯 Business-first mindset - I understand your priorities and align tech decisions with them ⚙️ Rapid MVP execution - from concept to launch in weeks, not months 🧩 Front End ownership - React, Next.js, API integrations, Tailwind, MUI and scalable architectures 🧩 Full Stack ownership - MERN, Express.js, Node.js, MongoDB 🧠 Strategic guidance - helping you define what truly matters for your first release I don’t take on last-minute fixes or e-commerce stores - I focus on SaaS and MVP projects where clear product thinking makes the difference. If you’re a founder looking for a reliable technical partner who speaks your language and delivers predictably - let’s build something great together. 🛠️ Tech Stack & Tools: • Languages & Libraries: React, React.js Node.js, JavaScript, ReactJS TypeScript, ReactJS NodeJS, Python, PHP, React Native, NextJS, MERN Stack • Styling: Material UI, Tailwind CSS, MUI React, custom SCSS / CSS • Build Tools: Webpack, Vite, NPM; • UI/UX: Figma, Frontend Design tools for pixel-perfect visuals; • Visualization: Leaflet, maps & data-driven charts. • Databases: MongoDB, PostgreSQL, MySQL, Firebase. • State Management: Redux, Zustand, RTK Query. • Cross-browser / cross-platform manual testing.

I build AI-powered products and full-stack systems for businesses worldwide. Production-ready. On time. Every time. 🏆 ▪️ Full Stack Development: Python, Django, FastAPI, React, Next.js, Node.js, Nest.js, TypeScript ▪️ AI Developer & LLM Integration: Claude API, OpenAI API, RAG Pipelines, AI Chatbots, Multi-Agent Systems ▪️ Python Developer: Django, FastAPI, REST API, Celery, PostgreSQL, Redis ▪️ React Developer: Next.js, React Native, TypeScript, SaaS Dashboards, Web Applications ▪️ Node.js Developer: Nest.js, Express, TypeScript, GraphQL, WebSockets, Microservices ▪️ Enterprise Software Development: FinTech Platforms, HealthTech, HIPAA-Compliant Systems, Government ▪️ Cloud & DevOps: AWS, Azure, Docker, CI/CD Pipelines, GitHub Actions, Infrastructure as Code ▪️ AI Automation: Document Processing, Knowledge Bases, Agentic Workflows, Chatbot Development Clients: Audi · eToro · California Department of Justice · Qonto (European FinTech, $5B valuation) Official Anthropic Technology Partner · Inc. 5000 · Forbes Technology Council 🥇 200+ projects shipped · 0 missed deadlines · 100% estimate accuracy ✔️ AI DEVELOPER & LLM INTEGRATION I design and ship AI-powered products built on Claude (Anthropic) and OpenAI APIs. As an official Anthropic Technology Partner, I have deep hands-on expertise in LLM application architecture for enterprise use cases. What I build: AI chatbots and conversational assistants, RAG (Retrieval-Augmented Generation) systems, multi-agent workflows, document processing automation, knowledge base platforms, AI-powered search, recommendation engines, and LLM integration into existing products via API layer. Stack: Python, FastAPI, LangChain, LlamaIndex, Claude API, OpenAI API, Pinecone, Chroma, Weaviate, Redis, PostgreSQL, AWS Lambda, Docker. Every AI product is production-ready — with proper context management, guardrails, cost optimization, error handling, and monitoring. Not a demo. Not a prototype. Shipped software. ✔️FULL STACK DEVELOPER — PYTHON · REACT · NODE.JS 12 years building web applications, SaaS platforms, and enterprise systems from scratch to production. I own the full stack: architecture, backend, frontend, database, deployment. Backend: Python (Django, FastAPI, Flask), Node.js (Nest.js, Express), REST API, GraphQL, WebSockets, async task queues (Celery, Bull), JWT and OAuth2 authentication, role-based access control. Frontend: React, Next.js, React Native, TypeScript, Tailwind CSS, Redux, SWR. Responsive, accessible, performant. Component architectures that scale — not code that breaks when you add the third developer. Database & Infrastructure: PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch. AWS (EC2, RDS, S3, Lambda, CloudFront, ECS), Azure, Docker, Kubernetes, GitHub Actions, GitLab CI. Infrastructure as Code (Terraform, AWS CDK). ✔️ ENTERPRISE SOFTWARE — FINTECH · HEALTHTECH · GOVERNMENT I build mission-critical systems for regulated industries where reliability, security, and compliance are non-negotiable. FinTech: payment processing systems, transaction monitoring, compliance automation, fraud detection, financial reporting dashboards, multi-currency platforms, Stripe and banking API integrations. Reference: Qonto — European neobank unicorn at $5B valuation. HealthTech: HIPAA-aware platforms, patient data management systems, clinical workflow automation, EHR and EMR integrations, telemedicine infrastructure, secure document handling. Reference: Modern Animal, Truveris, Prounitas. Government & Legal: audit-trail systems, secure document processing, role-based access control, decision logging, compliance reporting. Reference: California Department of Justice. ✔️ EDTECH PLATFORMS Student data systems, LMS infrastructure, analytical dashboards, compliance and security, user progress tracking, video delivery, assessment engines, and multi-tenant SaaS architecture. EdTech is my deepest vertical — more delivery experience in this space than almost any developer on this platform. ✔️ TEAM AUGMENTATION Need senior developers who plug into your product and deliver from week one, without the overhead of sourcing and onboarding? I source, vet, and lead the right engineers for your stack and timeline. Python developers, React developers, Node.js developers, AI engineers — all from a pre-vetted pool of top 3% talent. ✔️ PROJECT RESCUE Half-built product? Vibe-coded MVP that needs finishing? App that's live but has performance issues, security vulnerabilities, or can't scale? I take ownership, audit the codebase, and ship. Performance optimization, security hardening, technical debt reduction, production-grade refactoring — all part of what I do. ✔️ HOW I WORK Every engagement runs through a 36-point Quality Standards framework — a proprietary delivery process built over 200+ projects. Accurate estimates. Transparent tracking. On-time delivery. No surprises.

Full-Stack & Mobile Engineer (React, Next.js, Node.js, React Native, n8n, Supabase) ▪ 10 years I help startups and growing companies build high-quality web apps, mobile apps, and backend systems using React, Next.js, Node.js, React Native, TypeScript, Supabase, and PostgreSQL. I turn messy codebases and unfinished features into clean, fast, stable applications — web, mobile, and backend. I build MVPs in weeks, automate workflows with n8n, and ship production-ready releases at a predictable pace. My work has supported teams at Google, MIT, FedEx, and IPG Photonics (LightWeld used in SpaceX supply chain). Why me: 🏅 Top Rated Plus ▪ 100% Job Success ▪ $700k+ earned 10 years of hands-on full-stack, mobile, and backend development Shipped 70+ products across FinTech, HealthTech, SaaS, and marketplaces Built systems used inside Google, MIT, and FedEx Developed industrial software for IPG/LightWeld powering SpaceX-grade manufacturing Led engineering for a fintech mobile app with 250k+ monthly active users YC startup I worked with raised $1.6M after MVP What I deliver: • Full-stack development: React, Next.js, TypeScript, Node.js • Mobile app development: React Native for iOS & Android • Backend development: Supabase, PostgreSQL, Firebase, custom APIs • API integrations: Stripe, HubSpot, Slack, REST, GraphQL • Automation: n8n workflows (onboarding, CRM sync, internal tools) • MVP development in 4–8 weeks • Codebase rescue, refactoring, performance improvements • Long-term weekly development & product support Toolbox: React ▪ Next.js ▪ React Native ▪ Node.js ▪ TypeScript ▪ Supabase ▪ PostgreSQL Firebase ▪ Redis ▪ Swift ▪ Kotlin ▪ Docker ▪ AWS ▪ Vercel ▪ CI/CD ▪ n8n Automations You get someone who can architect, build, integrate, and actually finish things — not just write fragments of code. If you need a reliable full-stack or mobile engineer who delivers clean engineering and fast execution — let’s talk.

Startups, enterprises and public-sector organizations bring me in when the product needs strong technical decisions, not just execution - production AI systems, SaaS platforms and fintech, from architecture to live deployment. Most engagements start with a fixed-price design phase that defines architecture, scope and roadmap, then convert into fixed milestones, so delivery stays structured and budget predictable. Rate $125-150/hr depending on complexity; most work is delivered as fixed-price milestones. What I specialise in: AI/LLM systems - RAG pipelines, multi-tenant AI assistants, agent orchestration, Claude/OpenAI integrations, structured outputs, eval pipelines. SaaS platforms - multi-tenant architecture, subscription billing, RBAC, admin backends, scalable APIs across web and mobile. Fintech/compliance - ACH, Stripe Connect, idempotent payment webhooks, audit logging, GDPR-compliant data. Govtech/regulated - transparency platforms, donor-funded compliance, multi-language reporting. Blockchain/Web3 - Solana smart contracts, SPL tokens, DeFi integrations. Selected results (live demos and links in the Portfolio section): Minerva (active production) - multi-tenant AI assistant platform architected end to end: organizations upload document libraries and deploy embeddable chatbots on their own knowledge base. Hybrid retrieval (BM25 + dense vector + semantic), Entra ID + RBAC + MFA, full tenant isolation, golden-query eval harness in CI. NestJS, Next.js, Azure OpenAI. Diginak.ai (active production, lead architect) - logistics document automation that auto-processes ~78% of inbound PDF/CSV/Excel with zero human touch; the remainder routes to human review with confidence scores. Claude API + tool use, state-machine workflow engine, retry/idempotency, 850+ automated tests. NestJS, PostgreSQL. Walletta AI Cashier (concluded May 2026, 5-star) - real-time voice agent with sub-500ms perceived latency. Claude + GPT-4o orchestration, structured tool calls with confidence-scored routing, persistent WebSocket, retry with circuit breaker. LiveKit, Deepgram, ElevenLabs, NestJS. Damen Capital Portal (concluded May 2026, 5-star) - loan-servicing portal for a private lender with the full ACH lifecycle: tokenization, NACHA returns R01-R85, HMAC-verified idempotent webhooks, append-only audit log, OAuth 2.0 + RBAC, scheduled reconciliation. NestJS + Fastify, Supabase. PulseYourBiz (active production) - all-in-one SaaS for service providers: bookings, payments, invoicing, CRM, analytics. Five-app Turborepo monorepo, Stripe Connect payouts, idempotent webhooks, React Native mobile. Docker + GitHub Actions. ProveYourImpact (production) - multi-tenant governance/compliance platform for donor-funded projects in PALOP countries: 20 API modules, 9-role RBAC, configurable workflow engine, audit log, EU/UNDP/World Bank report generators in four languages. NestJS, Next.js, PostgreSQL + RLS. Also shipped: no-code Solana token/DeFi platform with 1,500+ users (SwapForge), offline-first clinical decision support for underserved regions (ExtendYourClinic), multi-tenant VetSaaS with PostgreSQL RLS isolation (acti.vet), React Native apps live on both app stores (ForroAI). Tech stack: Backend: Node.js, NestJS, Python, FastAPI, REST, GraphQL. Frontend: React, Next.js, React Native, Expo, TypeScript, Tailwind. AI: Claude, OpenAI, RAG, pgvector, Azure Cognitive Search, structured outputs (Zod/Pydantic), prompt caching, tool use, eval harnesses in CI. Cloud: Azure (Functions, OpenAI, Entra ID, Key Vault, App Insights, Bicep IaC), AWS, GCP, Docker, GitHub Actions. Databases: PostgreSQL, MongoDB, Redis, Supabase, RLS tenant isolation. Blockchain: Solana, Anchor, SPL, Jupiter, Solidity, EVM. Working model: 25-30 hrs/week across a small number of parallel engagements. Best fit when the product needs architectural ownership - not a fit for quick fixes or one-off tasks.

Most n8n and AI automation projects fail within 90 days - built fast, not built right. We're 2V Automation, a 30-person team and n8n Certified Expert Partner, building production-grade AI agents, workflows and API integrations for SMBs, agencies, and service businesses that survive past month three. I'm Valerian. I run 2V Automation, a 30-person team. We do AI and workflow automation for service businesses, and we do it the way most don't. ENGINEERING DISCIPLINE OVER VIBES 20 years of writing software before AI was a marketing category. We treat automation like production code: error handling, logging, alerts, version control, real testing. Not "it worked when I clicked run". SIMPLE BEFORE CLEVER The shortest workflow that solves your problem is almost always the right one. Each new node is another point of failure, another paid API, another thing your ops team won't understand in 6 months. We push back when clients ask for the complicated version. DISCOVERY FIRST, ALWAYS Most clients want to "automate everything". Almost nobody actually needs that. We do focused discovery (2-3 weeks, fixed fee), find the 3-5 places where automation pays back fast, and propose a phased plan. You keep the document whether you continue or not. PILOT BEFORE BUILD-OUT Whatever discovery surfaces, we ship the single highest-ROI piece first. If the pilot doesn't pay back, the next phases probably won't either. Better to find that out in week 6 than month 12. CREDENTIALS $1M+ delivered on Upwork. 14,912 hours. 100% Job Success. Top Rated Plus. n8n Certified Expert Partner. A real team: engineers, PMs, designers, QA. Not a solo founder with a Loom video. WHO THIS IS FOR 10-200 person service businesses (consulting, agencies, finance, professional services). Founders and operators who've done the math on what manual work is costing them and are ready to fix it properly. WHO IT ISN'T FOR People shopping on price. People who want "an AI that runs everything by Friday". People who've already decided what should be automated and just need hands. We're not those hands. If you're the first kind, send me a paragraph: What your business does, what's broken or expensive. I'll tell you within a day whether discovery is worth doing. Tools & stack: Automation: n8n, Make . com (Integromat), Zapier, Activepieces. AI & LLM: OpenAI, Claude (Anthropic), Google Gemini, LangChain, LangGraph, LlamaIndex, CrewAI, RAG, embeddings, vector databases (Pinecone, Weaviate, Qdrant, Chroma). Data & backends: Supabase, PostgreSQL, MongoDB, Redis, BigQuery. Workspace & no-code: Airtable, Notion, Google Sheets, Smartsheet. CRM & sales: HubSpot, Salesforce, Pipedrive, Close, GoHighLevel, Attio. Ops & PM: ClickUp, Asana, Monday . com, Linear, Trello. Comms & messaging: Slack, Discord, Microsoft Teams, Gmail, Twilio, SMS, WhatsApp. Voice & speech: ElevenLabs, Vapi, Bland, OpenAI Whisper, Deepgram. Scraping & browser: Apify, Playwright, Puppeteer, Browse.ai, Firecrawl. Web, forms & payments: Webflow, WordPress, Stripe, Typeform, Tally, Cal . com, Calendly, DocuSign. Dev stack: Python, FastAPI, TypeScript, Node.js, REST API, GraphQL, webhooks, OAuth, Docker, AWS Lambda, Vercel, Railway, Laravel. Practices: workflow automation, business process automation, AI agent development, AI chatbot development, custom GPT development, API integration, system integration, prompt engineering, retrieval-augmented generation (RAG), LLM integration, embeddings & vector search, voice AI agents, document AI & OCR, data extraction, web scraping, system architecture, technical discovery & scoping, automation roadmapping, CI/CD setup, monitoring & observability. Verticals: consulting firms, marketing / design / dev agencies, professional services, fractional executive firms (CFO, CMO, COO), accounting & bookkeeping firms, legal ops, recruitment & staffing, real estate & property management, coaching & training businesses, financial research firms, B2B service providers, light manufacturing operations, e-commerce ops. If you're looking for an n8n expert, n8n developer, AI automation agency, AI agent developer, automation consultant, Make com expert, Zapier specialist, AI chatbot developer, or an AI integration partner for your business - send me that paragraph. Let's talk.

Experienced in delivering seamless integrations across a diverse ecosystem of platforms: - Marketplaces: Amazon, Zalando, Bol, Winkelstraat.nl, Miinto, Spartoo, GlovoApp, UberEats, DoorDash, Kleertjes, Worten, Grubhub, Deliverect - eCommerce Platforms: WooCommerce, PrestaShop, Shopify, Lightspeed, Magento - CRM & Marketing Automation: Salesforce, Go High Level - ERP & EDI Systems: Odoo, SAP Business One, Microsoft Dynamics, Oracle Cloud ERP Technical Skills - Programming & Frameworks: Node.js, Angular, Next.js, React, Python, Go (GoLang) - Databases: MySQL, MongoDB, DynamoDB, Elasticsearch - Cloud & DevOps: AWS Lambda, Docker - APIs & Data: REST, GraphQL, MCP, A2A Artificial Intelligence & Automation - LLM Providers: OpenAI (GPT-4o, o1), Anthropic (Claude), local models (Ollama, LLaMA, Mistral, Qwen) - Agentic Frameworks: MCP (Model Context Protocol), A2A (Agent-to-Agent), multi-agent orchestration - Memory & Knowledge: RAG pipelines, vector databases, long-term memory, context management - Voice & Video: LiveKit, ElevenLabs, Deepgram - Tooling: Claude Code, Cursor

We build AI agents that ship inside real products — not demos. Healify is one of them: an AI health companion we took from idea to production MVP in 6 months. It raised ~$2M after launch. "Your team went above and beyond and built an interesting project in very short time." — Saket Agarwal, CTO at evluv (Director of Engineering at Salesforce) I'm Oleg. I lead an engineering team out of Croatia and Ukraine — 11 years on one stack, 48 contracts here, 11,888 hours, $600K+ earned, Top Rated Plus. What we build — AI agents and RAG systems that touch real data: CRMs, APIs, internal tools, databases — The product around them: React Native apps, Node backends, dashboards, infrastructure — Seed-stage MVPs, from spec to App Store AI work — Healify — AI health companion. Idea to production MVP in 6 months, raised ~$2M after launch — AI voice agent — inbound and outbound calls, lead qualification, appointment booking, CRM-connected — Remodelix — AI interior design app. Our own product: 1,000+ users, €5.2k MRR, live on the App Store, profitable on paid acquisition. We run the ads, the paywall and the P&L ourselves — so when we tell you what an AI feature costs to operate at scale, that's from our own invoices, not a calculator Mobile and web at scale 11,888 of those hours are React Native and Node. What came out of them: — RL Garage — 6M+ registered users, 4.2★ across 5,000+ reviews — Playback Rewards — 600K+ active users, 4.4★, MVP in 3 months — evluv — EV charging platform. 65,000+ stations on a live map, hundreds of concurrent WebSocket connections — BeautyAdvisor — backend from 1,000ms to 100ms, 3x request capacity, 4.5★ — Breeze — Berlin proptech marketplace. Built in 6 months, raised €2.2M seed — ThinkSpan (San Francisco) — 5+ year partnership, team grew from 1 to 8 engineers How we work Small team, long tenure — most of our engineers have been with us for years. On your project that's me on architecture and AI, plus one to three engineers. You get me directly, not a handoff to a junior after the sales call. You own the code and the IP from day one. Clients hire us when they want a team that argues with the spec, not one that nods at it. Where we start Most clients start with a simple MVP: $10k, about 30 days, one core flow built properly. Real code in your repo, yours whether we continue or not. If it works, we scale it into the full product. If it doesn't, you found out for $10k instead of $60k. Not a fit Shopify / Webflow / Bubble / WordPress, blockchain and NFT, design-to-HTML, native iOS/Android, "urgent, need to start today." Tell us what the agent should do, and what happens today when it doesn't exist. That's usually enough for us to tell you whether it's worth building.

I build enterprise Java, Angular, and Stripe fintech systems 𝟑-𝟓𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 using AI/𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞 - Top Rated developer with $100K+ earnings. I specialize in Java/Spring Boot, Angular, and React for enterprise applications, fintech platforms, and payment integrations (Stripe Connect). I use Claude Code (AI-assisted development) to deliver enterprise-quality code 𝟑-𝟓𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 than traditional development, without sacrificing code quality or test coverage. 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞, 𝐲𝐨𝐮 𝐰𝐢𝐥𝐥: - Get fast response and clear communication - Beautiful and reusable code, intuitive and functional interfaces, applying all best practices - A developer familiar with DevOps practices and CI/CD pipelines - Developer who leverages AI/Claude code to deliver faster and better quality 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬: - $100,000+ successful Upwork delivery with 90% Job Success Score - 38 enterprise projects with consistent 5-star client reviews - Fortune 500 experience: BNP Paribas, Fujitsu, Accenture - 9+ years specializing in Java/Spring Boot and Angular for enterprise fintech and trading systems Recent Enterprise Success: Led complete platform modernization for a Portuguese marketplace - migrated from SIBS payment system to Stripe Connect, enabling global expansion and automated revenue sharing. Enterprise Specializations: - Java/Spring Boot microservices for enterprise applications - Angular/React frontend development with modern frameworks - Real-time data processing with Apache Kafka - AWS/GCP cloud infrastructure and DevOps - Payment system integrations: Stripe Connect, SIBS, international expansion - AI-assisted development delivering 3-5x faster results with Claude Code - Experience with Remotion, creating video programmatically Proven Business Impact: - International marketplace expansion via Stripe Connect - Real-time order processing systems handling daily enterprise transactions - Mission-critical banking applications with 99.9% uptime requirements - Firebase authentication with custom security for enterprise compliance For larger projects: Also runs Limitless GMTech Solutions, a talent agency providing pre-vetted developers for international clients at competitive EU rates. Search "Limitless GMTech Solutions" on Upwork.

💼 8+ years of Full Stack Development experience with strong expertise in Software Architecture 🌍 120+ projects delivered for clients in the US, Canada, Europe & the Middle East 💰 20M+ in client revenue generated through high-performance web apps 🚀 40+ SaaS platforms & 12 HR solutions successfully launched 📱 Dozens of responsive Progressive Web Apps (PWA) delivered ⭐ 5-Star ratings across all projects I lead a team building scalable web, mobile, and SaaS products for startups and growing businesses. With React, React Native, and Node.js developers alongside UI/UX and Product Designers, we own the full product lifecycle - from MVP to stable production - delivering full-stack solutions built for long-term velocity and measurable business outcomes 🚀 𝗠𝗩𝗣 & 𝗦𝘁𝗮𝗿𝘁𝘂𝗽 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 We help founders move fast without sacrificing quality through agile full-stack development, mobile development, and React Native Developer workflows. Every MVP starts with a UX Designer and Product Designer working through user flows, wireframing, and prototyping in Figma before a single line of code is written. Our focus is on: 🎯 Turning ideas into working MVPs, building investor-ready demos, and launching beta products quickly 𝗢𝘂𝗿 𝘁𝗲𝗮𝗺 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘀: ✅ Rapid MVP development (User Interface Design – Frontend – Backend) ✅ UX flows, wireframing, and prototyping by our Figma Designer team ✅ Production-ready code with React, Next.js, TypeScript, React Native, and Swift ✅ Secure third-party integrations (Stripe, Firebase, Auth0, Twilio, Google Maps) ✅ Clean, scalable architecture designed for long-term growth and SaaS solutions As a Full Stack Developer SaaS team, we've helped startups raise funding and scale from MVP to 100,000+ users - and as a React Native Developer partner, we ensure your mobile product ships with the same precision as your web platform 💻 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Our React Frontend Developers, React Developers specializing in Next.js, and Node Developers work together to build fast, scalable web applications across the full stack - optimizing Core Web Vitals to achieve 95+ Lighthouse scores and 35% bundle reductions on Next.js TypeScript projects, because performance is never an afterthought. 🔹 Front-End: React.js, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS 🔹 Back-End: Node.js, NestJS, Express.js (REST & GraphQL), PostgreSQL, MongoDB, MySQL 🔹 CMS & Headless: Sanity, Contentful, Strapi This collaboration between React Frontend Developers and Node Developers ensures clean, scalable code - a foundation especially critical for SaaS platforms and enterprise B2B products 📱 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Our React Native Developers build mobile applications optimized for real-world usage, starting with UX mapping and UI design before development begins. As a Full Stack Developer, React Node team, we handle everything from UI to server-side logic: 🔹 React Native Developer Expo workflow for fast cross-platform delivery 🔹 Swift & SwiftUI for native iOS apps 🔹 Firebase, push notifications, analytics 🔹 App Store deployment and optimization 🔹 Offline mode, multi-language support, battery efficiency Our approach enables rapid iteration and production-ready releases, with Node.js powering smooth mobile-backend communication ☁️ 𝗖𝗹𝗼𝘂𝗱, 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗦𝘆𝘀𝘁𝗲𝗺 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 Our Full Stack Developer React Node team designs and maintains reliable, production-ready infrastructure: 🔹 AWS: Lambda, EC2, S3, CloudFront, RDS, Docker, Kubernetes, Terraform 🔹 CI/CD pipelines (GitHub Actions, GitLab CI) 🔹 Monitoring & logging (Sentry, Prometheus, Grafana) The goal: stable deployments, predictable scaling, and minimal downtime - essential for any serious Full Stack Developer SaaS platform handling real user load 🎨 𝗨𝗜/𝗨𝗫 𝗗𝗲𝘀𝗶𝗴𝗻 & 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 Our UI/UX Designers and Product Designers approach design as a core part of the product, not a decorative layer, working closely with Full Stack Developers so what gets built matches what was designed, pixel for pixel. Our Figma Designer workflow covers: 🔹 Product discovery & UX research 🔹 Wireframing and prototyping 🔹 Design systems and UI kits 🔹 Interface design across web and mobile 🔹 Accessibility (WCAG), responsive layouts 🤝 𝗛𝗼𝘄 𝗪𝗲 𝗪𝗼𝗿𝗸 🔹 Direct communication with our React Developers, React Native Developers, Full Stack Developers Node.js, UI/UX Designers, and Product Designers - no middle layers. As a dedicated Full Stack Developer React Node, and SaaS team, we bring every layer of the product under one roof: 🔹 Clear estimates and agile delivery 🔹 Clean, maintainable code 🔹 Secure API integrations with type safety in Next.js/TypeScript 🔹 Design and development moving together. Reliable products built by a team that understands both business goals and technical execution

⭐ Fractional CTO, Startup Advisor & Technical Advisor helping SaaS startups build, ship and grow AI-powered products from MVP to enterprise. 🚀 Harvard-certified AI Developer & Python Developer | 10+ years Full Stack Development | Senior React, Python & Node.js Software 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 Solution Architect helping SaaS founders and non-technical CEOs turn vision into production-ready software. My work spans AI architecture, machine learning consultant work, Gen AI consultant and AI consulting projects - 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 dev is too slow" → "We need to modernize our stack and migrate to AWS or Azure" → "We need AI agent automation (n8n, custom pipelines), but no one in-house to build and architect it right" 🏅 MY EXPERTISE Case 1 - Fractional CTO for a LegalTech SaaS (200+ law firms) Built a multi-tenant platform as SAAS developer: NestJS, Next.js, React, TypeScript, PostgreSQL, Azure, Terraform. AI Augmentation Layer: document extraction (Azure Document Intelligence), RAG research, AI-assisted drafting; Solution Architect, project manager. Case 2 - Technical Advisor for a Healthcare Monitoring Platform Compliant SaaS: Python, FastAPI, PostgreSQL, WebSocket alerts, React. HIPAA/GDPR, Docker CI/CD. ML pipelines, computer vision models; data scientist, data analyst, AI Consultant, Virtual CTO. Case 3 - Full Stack AI Developer for an EdTech LMS LMS build: React, TypeScript, Supabase, AWS (Cognito, Lambda). NLP personalization, GPT-3-powered recommendations, Moodle chatbot plugin; Web developer. Case 4 - Technical Advisor for a FinTech AI Startup Engineering: NestJS, Java, Azure SQL, Service Bus, blockchain-based payments, React frontend, AI content personalization, gamification; Solution Architect, AI engineer, Project Management. Case 5 - AI Engineer: RAG, NLP & Speech Systems RAG platforms (Pinecone, OpenAI), speech intelligence (Deepgram, LangChain, FAISS), CRM automation (Anthropic/Claude). AI Agent Development and AI agent n8n automation, working as AI agent builder and AI agent creator. Agentic AI patterns, AI Model Integration - AI automation agency-level scope. Case 6 - Full Stack Engineer for CRM & Auth Platform Microservices: gRPC, MongoDB, Neo4j. Multi-tenant auth (Azure AD); full stack developer, Cloud Architect advisor, AI Software Architect, 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, 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, Java, FastAPI, Django, Flask, GraphQL AI/ML: GPT, GPT-3, Claude, RAG, LangChain, Pinecone, FAISS, NLP, Deepgram, PyTorch, TensorFlow, ML, Deep learning Cloud: AWS (Cognito, Lambda, EKS, S3), Azure (AI Foundry, Document Intelligence, APIM) 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 Discovery Call (Free) - We discuss goals, challenges and product vision Technical Audit & Roadmap - I audit your stack, deliver a clear plan (Product Development, Solution Architecture, AI Development) Build & Ship - Weekly milestones, production-quality code (AI Automation, agentic workflows) 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)