Abenezer A.

AI Backend Developer | Production RAG Systems & LLM Chatbots | Python

𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 freelancer with 100% Job Success and 4,800+ hours delivered across long-term client engagements. I build backend systems and AI integrations that hold up in production - not demos that break under real usage. Over 5+ years, I've helped startups and growing businesses ship RAG pipelines, LLM-powered chatbots, and API infrastructure that actually gets used by real customers. 𝗪𝗵𝗮𝘁 𝗜 𝗱𝗼: • Backend Development: Python (Django, FastAPI), Node.js (Express/Nest), API architecture • AI & LLM Integration: Custom RAG systems, LangChain, LLM orchestration, AI chatbots and assistants • Cloud & DevOps: AWS (Lambda, EC2, S3, ECS), Docker, CI/CD, Nginx • Data & APIs: REST/GraphQL, PostgreSQL, MongoDB, Redis, vector databases • Payments & Integrations: Stripe, Supabase, third-party API integrations 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗸𝗲𝗲𝗽 𝗰𝗼𝗺𝗶𝗻𝗴 𝗯𝗮𝗰𝗸: • 10+ production-grade applications shipped with a focus on reliable backend and AI features • Deep hands-on experience with OpenAI + LangChain + RAG for document processing and conversational AI • Fast response time (0 – 0.5 hrs average) and clear communication - projects stay on track If you need someone to own the AI layer end-to-end - architecture, integration, and deployment, not just a prototype - I'd like to hear about what you're building.