Hi, my name is

Harry

I'm an AI engineer

Jakarta, ID Open to work

Building the infrastructure of intelligent systems

I'm an AI engineer with a deep focus on making models work harder, smarter, and faster in production environments. My work sits at the intersection of cutting-edge ML research and real-world deployment.

From fine-tuning large language models on domain-specific datasets to architecting multi-agent pipelines and RAG systems, I specialise in the full lifecycle of applied AI — not just prototyping, but shipping.

I also bring a quantitative finance lens to AI: building algorithmic strategies, backtesting frameworks, and predictive models that operate where precision and reliability are non-negotiable.

5+ Years in AI/ML
20+ Models fine-tuned
∞ Prompts engineered

What I do best

AI Automation

End-to-end workflow automation using LLMs, triggered pipelines, and intelligent decision routing. Zero repetition, maximum throughput.

Fine-tuning Models

Domain adaptation of open-weight LLMs using LoRA, QLoRA, and full fine-tuning. Specialised models that outperform general-purpose ones on your task.

Prompt Engineering

Systematic prompt design, chain-of-thought structuring, few-shot calibration, and evaluation frameworks that make models reliably perform.

Python Development

Production-grade Python for ML pipelines, API services, data processing, and research tooling. Clean, typed, tested, and deployable.

AI Agents

Multi-agent orchestration with tool use, memory, planning loops, and human-in-the-loop checkpoints. Autonomous workflows that actually ship.

Quantitative Finance

AI-powered alpha generation, factor modelling, backtesting frameworks, and real-time signal processing for algorithmic trading strategies.

Vector Database RAG

Retrieval-augmented generation pipelines using Pinecone, Weaviate, or pgvector. Chunking strategy, embedding choice, and retrieval optimisation.

Tools of the trade

AI / Models

OpenAI API Anthropic Claude Hugging Face LangChain LlamaIndex Ollama vLLM AutoGen

Training & Fine-tuning

PyTorch Transformers PEFT / LoRA TRL Axolotl Weights & Biases MLflow

Data & Retrieval

Pinecone Weaviate pgvector Chroma pandas NumPy DuckDB

Infrastructure

FastAPI Docker AWS / GCP GitHub Actions Supabase Redis

Quant Finance

QuantLib Backtrader yfinance TA-Lib Zipline CCXT

Selected work

Real systems. Real results.

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Let's build something remarkable

Available for freelance projects, full-time roles, and research collaborations.

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