Hi, I'm Emil Herzberg

Design engineer
building intelligent
digital products.

I bridge design, engineering, and AI to build products people actually use — from autonomous trading systems to apps in the App Store.

Work with me View selected work

Selected Work

All projects

AI Trading

In Development

A production-grade trading platform with autonomous agents, multi-broker support, Bayesian backtesting, and 8 LLM providers — 170+ Python modules. Built in cooperation with Absolute Software GmbH (Hamburg).

FastAPINext.js 15PythonTypeScript

LYLU AI Diary

Live

A shipped mobile app that transcribes voice diary entries via Whisper and analyzes mood — live on both App Stores with monetization.

React NativeExpoFastAPIWhisper

Cosmic Trap

Live

A solo-built Unity/C# mobile game with real-time computational geometry — live on Google Play and Apple App Store.

UnityC#Clipper2iOS ATT

Climate 360

Private

An immersive VR experience that makes climate change spatially tangible — walk through rising sea levels, coastal erosion, and environmental transformation. Full 3D worldbuilding, sound design, and Unreal Engine VR development. Bachelor thesis, grade 1.0.

Unreal EngineVR3D WorldbuildingBlueprint

Lab & Research

All projects

Experiments, benchmarks, and open-source tools.

Out of Ideas

Open Source

A multi-provider LLM benchmark measuring default repertoire depth across 10 frontier models — 14 providers, 1,856 generations, 16x cost spread.

TypeScript14 LLM APIsVoyage AI

Honest Factor Research

Open Source

A Python research framework that tests whether stock factor models really explain market behavior — or just look accurate because of hidden pathologies.

Pythonscikit-learnNumPy

What I Do

AI Systems

Multi-provider LLM orchestration, embeddings, vector search, autonomous agents, and production AI pipelines.

Fullstack Products

Next.js, React Native, FastAPI — from prototype to App Store. Two shipped products live on both stores.

Data & FinTech

Trading systems, Bayesian backtesting, factor models, broker integrations, and risk management.

Design & UX

B.A. in Design (1.2 with distinction). Product thinking, UI/UX, and visual communication built in — not bolted on.

Currently

Building autonomous AI trading agents with multi-broker execution and Bayesian strategy optimization. Exploring multi-provider LLM orchestration across 8+ providers and quantitative factor model research.

Open to freelance projects in AI systems, fullstack development, and product engineering.

14+

LLM providers integrated

170+

Python modules

Apps in App Stores

Products shipped

Looking for a design engineer
who ships?

I'm open to freelance projects, consulting, and the right full-time role.

Get in touch

Design engineerbuilding intelligentdigital products.