Andrii H.

AI engineer and architect. I build AI agents, RAG systems and LLM products that hold up in production. Expert-Vetted (Upwork Top 1%) · $1M+ earned on Upwork · 65+ projects · 100% Job Success · backed by a team of 120+ engineers at Softermii. Most AI projects look great in a demo and fall apart with real users. I close that gap: answers grounded in your own data, clear limits on what the AI can do alone, and testing before anything ships. “Strong AI Agent Architect, his team knows how to think the system and not only the code of our Finance app. I recommend him and his team without hesitation.” — client review, AI wealth platform I’m Andrii, a tech lead with 12+ years architecture and a technical founder at Softermii, based in Vienna. I lead every AI build personally, and the team behind me gives you agency capacity without agency overhead. We build through Apex, our test-first, AI-accelerated framework, which makes delivery 60-70% faster without skipping tests. What clients hire me for: AI agents and agentic workflows: agents that use tools, work across your systems and hand over to a person when they should RAG and AI knowledge assistants: chat and search grounded in your documents and data, with sources LLM-powered products: OpenAI and Claude integrations, AI copilots, structured outputs and evaluation AI automation: workflows where a model makes real decisions, built with n8n, Make and custom Python or TypeScript Document AI: classification and data extraction with confidence scoring and human review for uncertain items Voice and conversational AI: chatbots and voice agents that book, qualify and answer MVP validation and AI architecture review: an honest read on whether to build, what to build first and what it costs Full-stack AI products: React, Next.js, Node.js, Python, PostgreSQL and Stripe around the AI Recent results: A healthcare AI assistant went live with 30+ providers in its first week, with bookings up 40% and patient satisfaction up 80% An AI wealth platform, taken over from a stalled concept, shipped live in two-week releases with 8+ data integrations A supply chain optimization system for a European logistics network cut stockouts by 25-35% An AI moderation system for text, images and audio has run in production for 2+ years I work best with teams who know which problem they want AI to solve, or who want an honest second opinion before committing budget. If that’s you, let’s talk, or book a consultation directly from this profile. Services: AI Development — AI agents · Agentic workflows · LLM integration (OpenAI, Claude) · RAG · MCP · AI copilots · Chatbots and voice agents · Document AI · Prompt engineering · AI evaluation and testing · Machine learning Automation — Business process automation · AI workflow automation · n8n · Make · Zapier · CRM automation · Reporting automation Product Development — Full-stack development · SaaS development · MVP and product development · API development and integration · Internal tools and dashboards Stack — Python · TypeScript · Node.js · FastAPI · React · Next.js · LangChain · LangGraph · TensorFlow · PyTorch · PostgreSQL · pgvector · Supabase Payments & Integrations — Stripe · Plaid · Twilio · Third-party APIs · Webhooks Cloud — AWS · Google Cloud · Azure · Docker · CI/CD Compliance — Healthcare (HIPAA) and fintech software · Role-based access control · Audit trails