Nathan S.

AI & LLM Engineer | Senior Full-Stack Developer

I build AI features into production applications for Australian businesses. Retrieval systems over your own data, AI agents, fine-tuned models and on-premise LLM hosting. Each one shipped as a complete product your customers can use. An AI feature is really two jobs: the model itself, and the application around it. I do both. Open source language models on Hugging Face with tens of thousands of downloads for the AI depth, and a decade of shipping Laravel and PHP software for the delivery. The model and the product come from one person, not two. What you get on the AI side: 🔹 Retrieval over your own documents and data, so your team and customers can query your knowledge base 🔹 AI agents that complete tasks end to end instead of hinting at answers 🔹 Fine-tuned models tuned to your domain and tone 🔹 On-premise hosting for data that cannot leave your servers 🔹 Integration with OpenAI, Google, Anthropic or your own self-hosted models And the application around it: 🔹 Laravel APIs and backends, from REST endpoints to full multi-tenant SaaS, with billing, auth and roles 🔹 Vue.js or React frontends wired to a clean API 🔹 Legacy PHP to Laravel migrations, done incrementally with no downtime 🔹 Database design, performance tuning and third-party integrations Whether the job is adding AI to an app you already run, or building the whole thing from scratch, you get one contractor who owns both halves. Proof it holds up: 🔹 100% job success, Top Rated Plus for over 8 years on Upwork 🔹 Over 1,714 hours across long-term retained clients. 🔹 $90k+ earned on the platform Australian business hours, and I travel between Australia and Southeast Asia. I am an independent freelancer, so you work with me directly, no account managers or handoffs. Plain communication, fixed scope where it fits. Send me what you are trying to build and you will get an honest answer on scope and what it should cost.