# Niels Erik Nandal

> AI systems engineer building ambitious products with deterministic backends, legible interfaces, and readable software.

Niels Erik Nandal is an AI systems engineer: he designs deterministic backends,
builds legible interfaces on top of them, and writes software meant to be read,
not just run. This site is his portfolio — production projects, technical
writing, and a structured CV — and it is built to be as legible to a language
model as it is to a person. Start here for an index of everything on the site,
or read [llms-full.txt](https://nielseriknandal.com/llms-full.txt) for the complete corpus in a
single document.

## Writing

- [Neural Networks from Zero: Embeddings and Backpropagation](https://nielseriknandal.com/writing/zero-to-hero-one): A plain-English walkthrough of a small next-note network: learned embeddings, hidden layers, logits, cross-entropy, and backpropagation.
- [Xavier, Kaiming, and Batch Normalization Explained](https://nielseriknandal.com/writing/zero-to-hero-two): Why activation scale matters, when Xavier and Kaiming initialization apply, and what batch normalization actually normalizes.
- [Building My First Real-Time Full-Stack App](https://nielseriknandal.com/writing/my-first-project): What a multiplayer Go app taught me about decomposing game logic, synchronizing state, and designing before styling.

## Projects

- [Nexus](https://nielseriknandal.com/projects/nexus): Production reading, notes, and AI workspace built around stable evidence, durable chat, and one shared resource graph
- [niels-gpt](https://nielseriknandal.com/projects/niels-gpt): End-to-end LLM pipeline from tokenizer to chat interface, laptop-first
- [Suno Session Lab: turning clip generation into a navigable space](https://nielseriknandal.com/projects/suno-demo): Turns music generation into a navigable space, layering LLM labeling over CLAP/embedding-driven clustering and centroid-guided regeneration
- [Factory Simulator](https://nielseriknandal.com/projects/factory-simulator): Multi-agent LLM orchestration with deterministic factory scheduling simulation
- [Fractal Chat](https://nielseriknandal.com/projects/fractal-chat): Chat-first reader that ingests URLs/PDFs/EPUBs and stays grounded
- [Fractal Go](https://nielseriknandal.com/projects/fractal-go): Real-time multiplayer Go board game

## Pages

- [CV](https://nielseriknandal.com/cv): full career history, skills, and experience as a structured resume.
- [Now](https://nielseriknandal.com/now): what Niels is doing these days.
- [Colophon](https://nielseriknandal.com/colophon): how this site is designed and built.
- [Lab](https://nielseriknandal.com/lab): interactive experiments on model internals.
- [RSS feed](https://nielseriknandal.com/rss): subscribe to new writing posts.
- [llms-full.txt](https://nielseriknandal.com/llms-full.txt): the entire corpus (bio, every project, every writing post, and the CV) as one plain-text document, meant to be read in full by a language model.