Senior full-stack engineer and AI/ML researcher. I build LLM, RAG, fine-tuning and agent systems and ship them inside production applications.
Most AI contractors do not ship production software. Most web developers do not do real ML research. I do both.
Based between Australia and Southeast Asia. I work Australian business hours.
Director of DreamFast Solutions Limited, a Hong Kong registered company.
- Abliteration research. Comparative forensics on the HauhauCS, Heretic and Huihui techniques across Qwen models from 2B to 27B. Benchmark, safety and weight analysis, all open. Published at https://abliterlitics.dev.
- Local inference tooling. Heretic abliteration containers for NVIDIA Blackwell GPUs, GGUF to safetensors conversion, multi-GPU ComfyUI workflows.
- Production AI. RAG, fine-tuning, evaluation and agents, built into real Laravel and Vue applications.
Tens of thousands of model downloads on Hugging Face. Research and tooling repos below.
Over ten years on Upwork, long-term retained clients: 100% job success, Top Rated Plus, 1,700+ hours. Profile: upwork.com/freelancers/~016b31e44265be6d09.
- Hugging Face: huggingface.co/DreamFast
- Research site: abliterlitics.dev
- Writing: nathan.sapwell.net
- Company: dreamfast.solutions
- LinkedIn: in/nathandreamfast