Hire the Best Bitcoin Developers
in Ukraine

Hi there! For the last 7 years I have been professionally helping clients turn their ideas into a product. With proven ability of understanding customers' needs and outside the box thinking I am always eager to do the things right. If you want energetic, positive thinking problem solver with always fresh ideas in mind, I'm your man. Among areas of my expertise you might be interested in: - Qt - C++ - Rust - Golang - Blockchain - Cryptocurrency - Mobile, Desktop and Crossplatform Development.

Is your blockchain product ready for real users, or is it a prototype that breaks under live transactions? Most Web3 projects fail at the boundaries between smart contracts, wallets, trading operations, and backend systems. 🏆 20+ years architecting production systems at principal engineer level 📊 $200K+ earned on Upwork across 32 architecture projects 🎯 100% Job Success Score, Top Rated Plus on Upwork ⚡ 11 years architecting Fintech / Trading / Accounting solutions ⚡ 8 years architecting blockchain products across Bitcoin, EVM, Solana ecosystems 💼 CEO at Osambit, a 20-person engineering team ✅ Enterprise Blockchain Architect certified, former Sr Principal Engineer at Nordstrom ⭐⭐⭐⭐⭐ "We've had the opportunity to collaborate with the Osambit team, and it's been a great experience. They're highly professional, responsive, and truly understand the final goal. Their technical expertise and ability to deliver on time have been key to the success." (Alwyn V., IXO World) As a Blockchain Architect with 20+ years of production engineering experience and two years focused on Web3, I design blockchain and fintech products that operate reliably beyond a demo. I work across Solana and EVM networks—including Ethereum, Polygon, Base, BSC, and Arbitrum—as well as enterprise platforms such as Hyperledger Fabric and Besu. My work connects secure smart-contract, wallet, payment, and remittance flows with the backend systems, operational controls, and user experiences a real product needs. Every engagement starts with architecture: chain selection, custody and transaction boundaries, compliance-aware workflows, failure modes, scalability, and security. That architecture-first approach helps blockchain and neobanking products withstand live usage, not just testnet scenarios. 🔶 Centralized exchange: architecture for trading operations, wallet flows, and reliable backend integration 🔶 Custodial wallets: secure custody, transaction handling, and multi-wallet platform architecture 🔶 Trading automation system: real-time blockchain-integrated trading workflows with operational safeguards 🔶 Liquidity automation system: DeFi and liquidity-management automation across Solana and EVM ecosystems 🔶 Fintech, neobanking & remittance apps: payment, account, wallet, and cross-border transfer architecture 🔶 Bitcoin mining facility control panel: operational dashboard and control-system architecture for mining infrastructure 🔶 Blockchain-integrated game: NFT features, token and wallet integrations, and production-ready game backend design 🔶 Enterprise blockchain solutions: permissioned-network architecture and public-chain integrations using Hyperledger Fabric or Besu 🔶 Nordstrom (Sr Principal Engineer, 5 years): architected 9+ enterprise systems | led 10 offshore engineering teams | supply chain, payment, logistics domains WHAT I DO ✅ Blockchain Architecture: chain selection, system design, security boundaries, and production rollout planning ✅ Solana Development: Rust programs, SPL standards, RPC integrations, and high-throughput DeFi systems ✅ EVM & Smart Contracts: Solidity development and integrations for Ethereum, Polygon, Base, BSC, and Arbitrum ✅ Wallet & Custody Systems: custodial wallet architecture, secure transaction handling, and multi-wallet integrations ✅ Fintech, Neobanking & Remittance: payment flows, account and wallet systems, cross-border transfers, and operational controls ✅ DeFi, Trading & Liquidity Automation: trading workflows, liquidity systems, DEX integrations, and operational controls ✅ NFT & Tokenized Products: NFT minting, metadata, marketplace and royalty logic, and blockchain-integrated game features ✅ Enterprise Blockchain: Hyperledger Fabric and Besu solutions, permissioned-network architecture, and API or oracle integrations ✅ Full-Stack Web3 Platforms: React interfaces, Node.js or Python backends, web3 integrations, and real-time transaction services ✅ Production Infrastructure: AWS, Docker, Kubernetes, CI/CD, observability, automated testing, and scalable data systems WHO I WORK WITH 🎯 B2B and B2C companies building blockchain products, fintech and neobanking apps, exchanges, wallets, DeFi platforms, or games 🎯 Founders and CTOs who need Web3, payment, or remittance systems running in production with real users and real assets 🎯 Teams with multi-week engagements (4+ weeks minimum), not 5-minute tasks 🎯 Companies that understand blockchain architecture is a system design and security problem, not just a smart-contract problem 🎯 Clients who value senior engineering judgment over the cheapest hourly rate MY PROCESS 1️⃣ Architecture Review: 24-hour turnaround on an initial system map, risk review, and scope estimate for your blockchain or fintech product. Close collaboration with business and deep domain immersion. 2️⃣ Design: chain selection, smart-contract, wallet, payment, and remittance boundaries, backend integration, and security plan 3️⃣ Build: production blockchain or fintech

🚀 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 𝗣𝗛𝗣 𝗟𝗮𝗿𝗮𝘃𝗲𝗹 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 · 𝟭𝟬𝟬% 𝗝𝗦𝗦 · 𝟭,𝟲𝟬𝟬+ 𝗵𝗿𝘀 · 𝟭𝟮 𝘆𝗿𝘀 𝗶𝗻 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 With 13+ years of experience, 1,500+ Upwork hours, $80K+ earned, and a full history of ⭐ 5-star feedback, I help companies transform ideas into high-performance digital products. I focus on building solutions that are secure, scalable, maintainable, and fully aligned with your business goals - not just “coded to spec,” but engineered to last. --- # 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗗𝗢 𝗙𝗢𝗥 𝗬𝗢𝗨 ✅ Laravel Developer services - modular architecture, clean code, REST APIs, queues, events, permissions, refactoring, scaling ✅ Full Stack Development - API architecture, front-end interfaces, backend logic, integrations, deployments, CI/CD, optimization ✅ Next.js Developer services - App Router, Server Components, SSR/SSG/ISR, API routes, middleware, TypeScript, performance optimization, SEO ✅ SaaS Development - multi-tenant platforms, subscriptions, payments, onboarding flows, admin panels, analytics, notifications ✅ Web App Development - dashboards, CRMs, internal tools, automation systems, booking engines, customer portals, analytics platforms ✅ Payment processing issues fixing - got wide experience with main payment services: Stripe, PayPal, Mollie etc. Including crypto currency gateways. ✅ Performance optimization & security hardening ✅ End-to-end product development — from MVP to enterprise systems ✅ Long-term support, maintenance, and feature evolution I bring clarity, structure, and reliability to every project — from discovery to delivery. --- # 𝗦𝗞𝗜𝗟𝗟𝗦 & 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞 🖥️ Back-End Development PHP Laravel, Filament, OctoberCMS, Node.js, Next.js, API Development 🎨 Front-End Development React, Expo, Vue.js, Next.js, React Native, TypeScript, JavaScript, Vite, HTML5, CSS3, Tailwind, Bootstrap 🎨 Mobile App Development React Native, Expo, Mobile Backend Development 🗄️ Databases MySQL, PostgreSQL, Redis 🤖 AI code assistants Claude Code, Codex, Cursor. ⚙️ DevOps & Infrastructure Docker, CI/CD, DigitalOcean, Ubuntu/Linux 🛠️ Tools & Workflow Git, GitLab, ClickUp, Trello, Slack, Notion --- # 𝗪𝗛𝗬 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘? ✔️ Proven Expertise — 13+ years delivering high-value platforms across multiple industries ✔️ Business-driven approach — every decision supports growth, ROI, and performance ✔️ Scalable architecture — clean code built for long-term evolution ✔️ Excellent communication — clear updates, transparency, accountability ✔️ 5-star client satisfaction — strong history of long-term partnerships --- # 𝗔𝗖𝗛𝗜𝗘𝗩𝗘𝗠𝗘𝗡𝗧𝗦 𝗧𝗛𝗔𝗧 𝗦𝗘𝗧 𝗠𝗘 𝗔𝗣𝗔𝗥𝗧 🌟 Scaled SaaS platforms to thousands of users with multi-tenant architecture ⚡ Improved system performance by up to 40% with deep optimization 💡 Built automation tools saving clients 100+ hours per month 📈 Helped startups go from concept → MVP → funded product --- # 𝗔 𝗣𝗔𝗥𝗧𝗡𝗘𝗥 𝗬𝗢𝗨 𝗖𝗔𝗡 𝗖𝗢𝗨𝗡𝗧 𝗢𝗡 Whether you need a full SaaS platform, a custom internal system, a polished dashboard, or a senior Laravel Backend Developer to stabilize and scale your infrastructure — I’m here to deliver results. 👉 Click the 🟢 INVITE button or send a message. Let’s build something powerful, scalable, and truly impactful. 🚀💻 I help companies transform ideas into high-performance digital products through Web App Development, Frontend Developer, React Developer, Vuejs Developer, Nextjs Developer, WordPress Developer, SaaS Development, Full Stack Developer, Custom PHP, React Native, Mobile App Development and backend excellence as an expert Laravel Developer. AI-Assisted Web Developer (Claude Code / Cursor / Codex). Laravel Developer MVP, Full Stack Developer Laravel, Full Stack Laravel, Laravel Vue, PHP Laravel React, Flutter Laravel, Full Stack Developer PHP, PHP FullStack Developer, PHP MySQL Developer, PHP Developer CodeIgniter, React Nextjs, Full Stack Developer Nextjs, Nextjs Frontend, Nextjs Nodejs, Front end developer next.js, full-stack development front-end development responsive design API Integration, Stripe Connect.

Want smarter automation, better user engagement, and AI-powered growth? Send me your idea and I’ll break it down into a clear AI Chatbot Development strategy with quick wins and scalable long-term architecture. As your AI Chatbot Developer / AI Agent Developer, I’ll also explain how AI Chatbot Development drives business development and revenue 🤖 🔹 AI Engineer with 18+ years of programming experience (since 2006) 🔹 100+ chatbots / ai agent built as AI Agent Engineer resolving 70%+ of queries autonomously 🔹 Business-first mindset focused on ROI 🔹 Trusted AI Automation Specialist automating 50+ daily tasks / Automation Engineer saving 500+ hours/month for 100+ clients & 20+ startups 🔹 AI Agent Developer | AI Chatbot Developer | Telegram Bot Expert | Web Developer 🔹 Fast, clear communication & startup-friendly mindset I’m a senior engineer / ai agent developer / ai chatbot developer / agentic ai developer specializing in AI chatbot, AI platforms, AI solutions for Crypto and automation-driven businesses. My work focuses on building production-ready AI Chatbot (s), AI Agent (s), AI RAG, AI assistants, autonomous agents, Telegram trading bots, and crypto Telegram bots that scale securely and reliably. Whether you need website chats, voice AI agent, customer support automation, Telegram bots, Slack bots or advanced AI RAG systems, my approach ensures real business impact—not just demos. 🚀 AI Results I’ve Delivered • AI Chatbot Development of 100+ Python chatbots deployed across websites, Telegram, and Slack shipped across 30+ countries • 50+ AI Agent Development and bot development projects automating customer support and lead generation • 30+ AI workflow automation pipelines cutting manual processing time by 70%+ • Data Science and Data Analysis pipelines reducing human support workload by 60%+ • 30+ RAG, Neural Network and Natural Language Processing (NLP) solutions improving response accuracy by 40%+ • 15+ PyTorch and 4+ TensorFlow models trained and deployed to production • 30+ PHP and WordPress sites with custom AI chatbot and API integration over 10+ providers • 25+ Node.js and 12+ React and JavaScript projects handling 10,000+ concurrent users • Generative AI, Artificial Intelligence integrations raising user engagement by 45%+ • Machine Learning and Deep Learning architectures lifting AI prediction accuracy to 95%+ • 40+ Blockchain projects over 10+ DeFi, wallets, payment systems • AI sales agent and deal closer chatbots lifting conversion rates by 35%+ 📌 Full-Spectrum AI Chatbot Development Services • AI Agent Development, bot development and AI workflow automation • SaaS assistant • AI Agent Developer for startups and enterprises • AI RAG chatbot system for private data & SaaS • AI customer support & lead gerenation • Website chatbot, Slack bot & Voiceflow chatbot • Business automation and AI integration • Etsy marketing and Pinterest marketing • WordPress, API integration & admin dashboard • Blockchain & Web3 chatbot • Crypto / Blockchain Telegram trading bots • AI Agent automation & conversational workflow • Multi-agent & AI Agent Developer services • Practical deployments for customer support (Tidio) and lead generation (Conversiobot) Developer Stack • LangChain, LangGraph, CrewAI, AutoGen, OpenAI • Open AI chatbot, Claude, Gemini, GPT-3 & GPT-4 integrations • Flask, FastAPI, DialogFlow, ManyChat, Botpress • FAISS, Chroma, Pinecone, Weaviate, MySQL, PostgreSQL, MongoDB • Website chat, Telegram bot, WhatsApp chatbot, Slack & Discord bot • Python, PHP, JavaScript, Node.js & React 📈 Advanced AI Chatbot Development & AI Agent Development I don’t just “build bots” — I engineer intelligent systems. My AI Chatbot Developer process covers conversation design, model selection, AI Agent Development, and scalable backend architecture. Using LangChain, LangGraph, ai agent n8n, FastAPI, and modern AI pipelines, I've built 100+ AI Agents that reason, retrieve data, and execute workflows — as your expert AI Agent builder trusted by 50+ businesses and AI Agent creator with 70%+ autonomous query resolution. As a senior AI Chatbot Developer / AI Agent Developer, my focus is reliability, security, and measurable results for chatbot marketing and business automation. • For SaaS & AI platforms, I build AI RAG chatbot solutions that answer accurately from private data. • For startups, I provide MVP-focused AI Chatbot Development that scales smoothly. • For Crypto projects, I deliver chatbots integrated with smart contracts and payment systems. 📩 If you’re looking for a senior AI Chatbot Developer / AI Agent Developer specializing in AI Chatbot Development, AI RAG systems and conversion-focused AI Chatbot Developer solutions, let’s talk. I build intelligent systems that actually work — and scale.

Top Rated | 100% JSS | 50+ Projects | SaaS & VC-Backed Startups Frontend engineer focused on building fast, scalable SaaS products that are ready for real users - not just demos. I work with startups, founders, and product teams to turn ideas, Figma designs, and existing products into polished, production-ready web apps using Vue/Nuxt and React/Next.js. Over the last 5+ years, I’ve built SaaS dashboards, internal tools, client portals, MVPs, AI tools, fintech platforms, marketplaces, and marketing platforms (multi-page websites + CMS systems) for VC-backed startups ($25M+ funding) What I can help you build: - SaaS dashboards & admin panels - MVPs for fast launch and validation - AI-integrated web applications - Fintech & analytics platforms - Internal tools & business platforms - Marketplaces & booking systems - CRM / ERP interfaces - Real-time apps with WebSockets - Mobile-ready apps with Capacitor - Landing pages with strong UX & conversion focus - Complex frontend architectures - Pixel-perfect UI from Figma - Responsive, mobile-first applications - API integrations & third-party services - Performance optimization & frontend scaling What clients value about working with me: - Clean, scalable, maintainable code - Fast communication and consistent updates - Strong product thinking, not just coding - Attention to UX, performance, and details - Ability to work independently without micromanagement - Production-focused mindset from day one - Reliable delivery and ownership of features - Focus on long-term scalability, not quick hacks I don’t just build interfaces - I help create products that feel fast, modern, and reliable for real users. Core stack: Frontend: Vue, Nuxt.js React, Next.js, TypeScript Capacitor, React Native JavaScript Pinia, Vuex, Zustand, GSAP, Three.js, Anime.js Backend & APIs: Node.js, Express, Hono Python, Django, REST APIs, GraphQL Supabase, PostgreSQL Firebase, Auth systems, Realtime data UI & Performance: Tailwind CSS, SCSS, CSS Modules Responsive design, animations, optimization SSR, SPA, PWA Tools & Workflow: Git, GitHub, GitLab CI/ID Vercel, Netlify, Docker Figma-to-code workflows Agile / Startup environments Good fit if you need: - A frontend developer who can own features end-to-end - A reliable engineer for a long-term SaaS product - Someone who understands startup speed and priorities - A developer who can turn designs into polished production UI - Fast execution without sacrificing scalability - Clean frontend architecture for growing products If you need a fast, scalable SaaS frontend or MVP built properly from the start - send me a message.

🔥Your Webflow website shouldn’t just look good - it should convert. I build 𝗵𝗶𝗴𝗵-𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗶𝗻𝗴 𝗪𝗲𝗯𝗳𝗹𝗼𝘄 𝘄𝗲𝗯𝘀𝗶𝘁𝗲𝘀, that help startups, SaaS, and businesses turn visitors into clients. 𝗪𝗶𝘁𝗵 𝗮 𝟳 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗮𝗻𝗱 𝘀𝘁𝗿𝗼𝗻𝗴 𝗺𝗶𝘅 𝗼𝗳 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗮𝗻𝗱 𝗨𝗜/𝗨𝗫 𝘁𝗵𝗶𝗻𝗸𝗶𝗻𝗴, I create websites that not only look professional, but also make content easier to manage, improve user experience, and support real business goals. 𝗠𝗬 𝗪𝗘𝗕𝗙𝗟𝗢𝗪 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦: ✅ Custom Webflow websites (from scratch) ✅ Figma to Webflow (pixel-perfect) ✅Webflow template customization ✅ Webflow CMS setup & structure ✅ Landing pages that convert ✅ Website redesigns (modern & clean) ✅ Responsive & mobile-first development ✅ Performance & UX optimization ✅ Ongoing Webflow support 💎𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗧𝗡𝗦 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘 - I help founders, startups, and growing businesses design and build websites that attract, engage, and convert users. - My focus is high-performance websites built with Webflow, powered by strategic UI/UX design, clean CMS architecture, and conversion-focused layouts. - I combine design thinking + no-code development + SEO-ready structure to turn underperforming websites into scalable business assets. 🎯𝗪𝗛𝗢 𝗜 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 • Startups building MVPs & investor-ready Webflow websites • Founders & solopreneurs launching personal brands & landing pages • SaaS companies improving conversion & user experience • Agencies outsourcing Webflow development • Growing businesses redesigning or scaling their Webflow sites 💼𝗔𝗕𝗢𝗨𝗧 𝗠𝗘 🌍 400+ websites designed & developed 🎨 7+ years in UI/UX & web design 🧩 Webflow, WordPress & Framer expert 📐 Figma-first design workflow 📈 Average +35–90% conversion lift after redesigns 👥 Clients across US, EU, UK, Canada & Australia ⚡ Fast, clean, scalable CMS builds 🕒 Clear communication & on-time delivery 💡𝗣𝗥𝗢𝗖𝗘𝗦𝗦 1️⃣ UX research & project goals alignment 2️⃣ Wireframes & UI design in Figma 3️⃣ Conversion-focused layout & content structure 4️⃣ Clean, scalable Webflow development 5️⃣ CMS setup, SEO basics & performance optimization 6️⃣ Launch & ongoing support 𝗘𝘃𝗲𝗿𝘆 𝘀𝘁𝗲𝗽 𝗶𝘀 𝗯𝘂𝗶𝗹𝘁 𝘁𝗼 𝘀𝘂𝗽𝗽𝗼𝗿𝘁 𝗿𝗲𝗮𝗹 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗼𝘂𝘁𝗰𝗼𝗺𝗲𝘀, 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝘃𝗶𝘀𝘂𝗮𝗹𝘀. 🚀𝗟𝗘𝗧'𝗦 𝗕𝗨𝗜𝗟𝗗 𝗔 𝗪𝗘𝗕𝗦𝗜𝗧𝗘 𝗧𝗛𝗔𝗧 𝗪𝗢𝗥𝗞𝗦 Message me to discuss your project I help businesses launch faster, convert better, and scale confidently Limited slots available — quality over quantity ⚡If you're looking for a reliable Webflow developer who focuses on results — feel free to reach out. 𝗟𝗲𝘁’𝘀 𝗯𝘂𝗶𝗹𝗱 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝘁𝗵𝗮𝘁 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝘄𝗼𝗿𝗸𝘀. 📚𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘 & 𝗞𝗘𝗬𝗪𝗢𝗥𝗗𝗦 Webflow Developer, Webflow CMS, Figma to Webflow, Landing Pages, Website Redesign, Responsive Web Design, CMS Development, Webflow Animations, Interaction Design, Conversion-Focused Design, SEO-Friendly Websites, Performance Optimization, No-Code Development, Front-End Development