Kacper H.

AI-Certified Full-Stack Dev & Builder | 7+ Years | Langchain Expert

Ready to collaborate with a top-tier web developer who's mastered AI-powered development? Skilled in AI automation, prompt engineering, and web3 - I don't just code, I revolutionise how fast and efficiently projects get delivered. 🚀 AI-CERTIFIED DEVELOPER WHO DELIVERS AT 10X SPEED: Triple AI Certified: AI Devs, AI Devs 2, AI Devs 3 (2023-2025) AI Development Arsenal: Claude Code, Cursor IDE, Windsurf IDE, MCP servers, n8n automations Advanced AI Implementation: Modern RAGs with vector/graph databases, semantic search, custom AI agents, agentic AI projects powered with langchain/langgraph. Proven AI Experience: Senior roles at 3 AI startups (SwanLake AI - London, Buyary - San Francisco, Jolt - Toronro, plus founder of AIAdaptiv) Endorsed by a thriving community of 20,000+ coders worldwide and recognized as a coding teacher, I'm no stranger to high-stakes challenges. My clients entrust me with their most critical projects, and I deliver results that exceed expectations using both traditional excellence and AI efficiency. Notable achievements: ⭐️ Gathered nearly 20k followers across Instagram, LinkedIn, Twitter, Medium and YouTube ⭐️ Wrote 100+ articles, several with thousands of reads ⭐️ Developed high-quality UI for funded startups in Berlin, London, Toronto, Munich, Sydney and San Francisco ⭐️ Pioneered novel applications of AI and automation, driving digital trends of tomorrow ⭐️ Closed 426+ tickets with consistent excellence at LicenseRocks Looking for exceptional web development support? Our partnership could be the perfect fit if you're thinking: ✅ "There's a major project on the line, and I want the best web developer in the game." ✅ "I know how to run my business, but maybe I'm too close to see the digital potential." ✅ "I'm not a tech expert, and I don't have the time to wrestle with complex website coding!" ✅ "Our last web project was a disaster - I can't afford for that to happen again." ✅ "Our digital needs have evolved since the last project!" ✅ "I need a comprehensive web solution that perfectly represents my brand and story." ✅ "I want someone who leverages AI to deliver faster without compromising quality." ✅ "I need an AI engineer to build scalable, secure AI solutions" Partnering with me, you will: 💡 Stop grappling with complex web projects - I handle the PLANNING, CODING, UI/UX DESIGN HELP, TESTING & LAUNCH STRATEGY 💡 Secure your best chance at making that lasting digital impression 💡 Receive turnkey, high-grade, future-proofed digital solutions tailored to your needs 💡 Benefit from AI-enhanced development that cuts delivery time by 40-60% 💼 PROVEN TRACK RECORD: 7+ years commercial experience, nearly 12 years of coding SwanLake AI (London): Senior Frontend Dev - Implemented AI-powered text editors with complex logic Buyary (San Francisco): Senior Frontend Dev - Pixel-perfect MVP for fundraising LicenseRocks (Berlin): Full-Stack Dev - NFT workflows, 60+ custom components Jolt (Toronto): Full-Stack Dev & AI engineer (langchain/langgraph) - agentic AI chat, AI studio, full stack AI powered solutions. Founded: ModernDev Agency (SaaS development) & AIAdaptiv (AI solutions for businesses) 🛠 TECHNICAL EXCELLENCE: Core Stack: Next.js, React, TypeScript, Node.js, PostgreSQL, Tailwind CSS AI/ML: RAG systems, vector databases, semantic search, LLM integration, AI agents, Langchain, Langgraph AI Tools: Claude Code, Cursor, Windsurf, n8n, MCP servers, Antigravity, Gemini CLI, Codex. Web3: Smart contracts, NFTs, on-chain/off-chain data DevOps: Git/GitHub, Docker, CI/CD Languages: 🇬🇧 English: Fluent 🇪🇸 Spanish: Conversational 🇵🇱 Polish: Native 🇨🇳 Chinese: HSK2/Basics Learning: 🇮🇹 Italian 🇫🇷 French 🇸🇦 Reading Arabic Key advantages: 🔑 Learn to implement the same top-tier WEB DEVELOPMENT STRATEGIES that successful founders use 🔑 Save resources by utilising my high-quality work across your digital platforms 🔑 Collaborate with an experienced full-stack developer who REGULARLY OUTPERFORMS competition 🔑 Leverage AI tools to get enterprise-grade solutions delivered at startup speed About me: 🔥 Skilled full-stack developer with military precision (former Air Force Captain) 🔥 Catching the AI trend by enhancing AI-driven development, making work more efficient 🔥 My expertise lies in web development, web3, and AI integration 🔥 Experience with React, Node.js, blockchain technology, and modern AI systems 🔥 Highly motivated, detail-oriented, and dedicated to client satisfaction 🔥 Excellent communicator committed to on-time, within-budget delivery 🔥 Extremely focused on productivity and work ethic Ready for a tech whiz who doesn't just follow trends but sets them? Want a developer who understands the intricacies of the web, from AI automation to social media content creation? Then, let's connect! Check out my portfolio at kacperhernacki.com. Let's raise the bar, together. Thank you for considering my profile. I look forward to working with you!