Jeff
Building end-to-end AI systems, from backend architecture to integration with real business sales and operations processes.
GET IN TOUCHSystem Architecture
Translating complex business logic into autonomous systems that actually run in production.
"I am an AI Engineer with experience building end-to-end AI systems, from backend architecture (LangGraph, FastAPI, RAG) to integration with real business sales and operations processes. Completed the Machine Learning Specialization, with hands-on experimentation in PyTorch, TensorFlow, and LLM fine-tuning. Comfortable working at the intersection of engineering and business logic, translating business needs into systems that actually run in production, not just prototypes."
AI & Automation
LangGraph, LangChain, N8N, RAG (pgvector), Hugging Face, Groq API, Gemini API, OpenAI API.
Machine Learning
Supervised & Unsupervised Learning, Neural Networks (PyTorch, TensorFlow, Keras), scikit-learn, LLM Fine-tuning (LoRA/PEFT), Feature Engineering, LLM Evaluation (LLM-as-Judge).
Backend & Infrastructure
Python, FastAPI, PostgreSQL, Docker, Supabase, Firebase.
Web Development
Next.js, JavaScript, TypeScript, React, Vercel.
Background
Work Experience
AI Engineer & Fullstack Developer
IXIERA.ID | JAN 2025 - PRESENT
- Designed and built an end-to-end AI Sales Agent using LangGraph (Python) architecture, RAG pipeline with pgvector + HuggingFace, and Groq API.
- Developed a client portal (Next.js + Supabase + Clerk Auth) with a real-time tracking dashboard.
- Built a backend AI service using FastAPI + Python, deployed as an inference endpoint.
- Ran LLM fine-tuning experiments (Qwen2.5, LoRA/PEFT) on production data and built an LLM-as-judge evaluation framework.
AI Automation Engineer
PT KARYA GRAHA PRIMANUSA | JAN 2026 - APR 2026
- Implemented an agentic AI system (Zora AI) on WhatsApp for property sales automation across 5 active projects.
- Designed architecture using N8N, Chatwoot, Evolution API, and Supabase on a Coolify VPS.
- Integrated Groq (Llama 3) and Gemini Flash 2.5 for context-aware responses grounded in property data.
- Documented PRD, technical architecture, and deployment guidelines.
Cleaning Service Staff
PENDAWA | 2023 - 2024
- Maintained high standards of cleanliness and performed routine inspections to ensure SOP compliance.
Education & Certifications
Machine Learning Specialization
Stanford Online / DeepLearning.AI (Coursera) | 2026
Machine Learning Credentials
IBM SkillsBuild | 2026
Certified in Data Analytics and Machine Learning Methods.
Computer Engineering
SMK Negeri 1 Prigen | Graduated 2022
Initiate a System
Ready to deploy high-ticket business automation?