Tien N.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I ship AI products to real users at scale: RAG course builder used by 10,000 learners, real-time voice AI with sub-second replies, and backend experience on a 35M-user live game. AI integrations that actually ship to production, not demos, not POCs that die in week 3. I'm a senior AI full-stack engineer who builds production AI products that serve real users at scale. My day-to-day work includes LLM-powered conversational agents, RAG systems with semantic search, ML pipelines for behavioral analytics and retention prediction, generative content tooling, and real-time voice/chat moderation built on Whisper + LLM classifiers, running in production for products with millions of users. On Upwork, I take on AI-powered SaaS, full-stack web, and mobile builds for startups and product teams who need a senior engineer who can architect, build, and ship to real users. 𝗥𝗲𝗰𝗲𝗻𝘁 𝗰𝗹𝗶𝗲𝗻𝘁 𝘄𝗼𝗿𝗸 🔹 Voice AI Companion App (1-year engagement, under NDA), real-time conversational AI on OpenAI + WebSocket backend with low-latency voice pipeline. 🔹 Trainizi, AI course builder for nano-learning (6-month build), RAG pipeline that turns source documents into structured courses. ~5,000 courses generated for ~10,000 learners, with student dashboards and progress tracking. 🔹 SRI (Stack Relationship Intelligence), Chrome extension that automates HubSpot CRM from Granola meeting transcripts, syncing contacts and enriching records with HubSpot Breeze AI. 🔹 AI Counselling Co-pilot (private project), real-time assistant for mental health professionals: live speech-to-text, AI suggestion cards from a clinical library, rule-based crisis detection with a guided safety protocol, and auto-drafted session notes. 🔹 Game backend in Golang, a live game with 35M registered users and ~50,000 concurrent, real-time services under sustained peak load. 🔹 Social Network Platform, end-to-end full-stack build serving 100K+ users (frontend, backend, real-time features, cloud infrastructure). 𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱 🔹 AI-powered SaaS, RAG systems, AI agents, multi-tenant architectures, subscription billing 🔹 LLM integrations, OpenAI, Claude, Whisper, prompt engineering, vector search (Pinecone, Supabase) 🔹 Data and automated decisioning, dbt, Airflow, BigQuery, rule engines, dynamic pricing 🔹 Backend at scale, Golang real-time services, WebSocket platforms, high-concurrency systems 🔹 Full-stack web, React/Next.js + Node.js / Python (FastAPI/Django) / Golang 🔹 Mobile, Flutter and React Native, cross-platform iOS + Android 🔹 Real-time systems, chat, voice/audio moderation, streaming 🔹 Production ML, analytics pipelines, retention/churn prediction, behavioral modeling (PyTorch, BigQuery) 🔹 Cloud, AWS, Azure, Docker, CI/CD, production monitoring (ELK Stack) 𝗧𝗲𝗰𝗵 𝘀𝘁𝗮𝗰𝗸 🔹 AI / LLM: OpenAI, Claude, LangChain, RAG, Whisper, Stable Diffusion, Prompt Engineering 🔹 Backend: Python (FastAPI/Django), Node.js, Golang 🔹 Frontend: React, Next.js, Vue, TypeScript 🔹 Mobile: Flutter, React Native 🔹 Data / ML: dbt, Airflow, BigQuery, PyTorch, TensorFlow 🔹 Databases: PostgreSQL, MySQL, MongoDB, Redis, Supabase 🔹 Infrastructure: AWS, Azure, Docker, CI/CD, ELK Stack 𝗪𝗵𝗮𝘁 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘀𝗮𝘆 ⭐⭐⭐⭐⭐ "Tien is a superstar problem solver. I cannot express how helpful he was in solving our code issue when other developers could not. He was patient, diligent and confident." ⭐⭐⭐⭐⭐ "Good and honesty and technically capable developer. Will work with again.", 120-hour Laravel + Vue.js engagement ⭐⭐⭐⭐⭐ "Communication was top-notch, he met all deadlines, and his skills were reasonably strong.", Laravel e-commerce project 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 Ask product-level questions before quoting, understand the business, not just the ticket. Propose architecture in writing before any code, fewer surprises later. Deliver in milestones with regular updates, you always know what's next. Document and hand off cleanly, your future engineers won't curse my name. 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗸𝗲𝗲𝗽 𝗰𝗼𝗺𝗶𝗻𝗴 𝗯𝗮𝗰𝗸 🔹 Strong product thinking, I challenge ideas when needed, protect your roadmap 🔹 Clear communication, English Fluent (Verified), async-friendly, no chasing for status 🔹 Reliable execution, 100% Job Success across every completed Upwork project 🔹 Full-stack ownership, backend, frontend, mobile, AI, deployment, and the parts in between 🔹 Practical AI implementation, what scales in production, not what looks cool in a demo 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜'𝘃𝗲 𝗯𝘂𝗶𝗹𝘁 𝗳𝗼𝗿 AI consumer apps, SaaS platforms, hospitality and travel, gaming, EdTech and course-builders, social and community platforms, e-commerce, mobile-first products, real-time AI experiences. Available for long-term, ongoing, and product-focused engagements (30+ hrs/week). If you're building a product rather than a feature, we'll understand each other quickly. Send a message or book a consultation.