Engineer · Entrepreneur · Explorer

I build things that
connect to the real world.

From soldering irons and radio frequencies to cloud platforms serving millions. 25 years of building companies, products, and systems — from zero to scale.

Andreas Otto
Andreas Otto
mp3.de Story Europe's largest music portal. Built, scaled, exited. Iceland Highland expeditions. Off-grid. No plan B. Electronics IoT, GPS tracking, STM32, radio & RF. Travels Iceland, USA, Asia. Always off the beaten path. Work 25 years building companies & products. w workingbits My company & SaaS products.

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Started with a soldering iron.
Never really stopped.

I grew up building radios, antennas, and circuits. CB radio as a teenager, then amateur radio — shortwave, mediumwave, UHF, VHF. Decoding RTTY weather fax data from shortwave transmissions. Building antennas from scratch.

Then the internet arrived, and I was hooked. At 24, I founded mp3.de — Europe's largest music portal at its peak. Millions of users, seven-figure revenue, exit in 2002. After that, consulting for enterprises led me to Deutsche Postbank / Deutsche Bank, where I spent a decade building online banking platforms for millions of daily users.

Today I run workingbits, building SaaS products, ERP systems, and AI-driven development workflows. I work with autonomous AI agent teams that write, test, and review code in parallel — turning what used to take sprints into hours.

The best products are built by people who understand the full picture — not just the code, but the hardware it runs on, the business it serves, and the users who depend on it.

The thread that connects it all: I build things that work in the real world. Whether it's firmware on a microcontroller, a cloud backend handling thousands of IoT devices, or a mobile app — I care about the full stack, from the solder joint to the user interface.

Building, scaling, shipping.

2010–now

workingbits GmbH Founder & CEO

Built a complete ERP system from scratch with PHP, React, REST APIs. Two SaaS products serving hundreds of business customers. AI-driven development with autonomous agent teams. Infrastructure across three data centers.

2008–2018

Deutsche Postbank / Deutsche Bank Head of Retail & Cash Management

Conceived Germany's first cloud-based ATM. Led a €50M hardware rollout with 60+ external partners. Connected cash safes to real-time banking APIs. Won the Postbank Award 2015 and EHI Retail Technology Award 2013.

1999–2002

mp3.de Founder & CEO

Built Europe's largest music portal. Platform for 150,000+ bands and newcomer artists. Co-founded audiobahn New Media GmbH with projects for Universal Music, EMI Records, RTL, Swiss TV. SAT.1 Online Star Award 2001. Seven-figure revenue. Exit 2002.

The full story →
1997–1999

NTEC First company

First internet provider in Trier. Built infrastructure, networks, hosting. Parallel: IT apprenticeship — graduated top of class.

AI-driven development is
not about generating code.

It's about everything around it. I build autonomous AI agent teams that architect, implement, test, and review — in parallel.

A

Architect Agent

Designs system structure, defines interfaces and contracts

T

Test Agents

Generate full test suites before a single line of production code exists

I

Implementation

Multiple agents work in parallel against defined test interfaces

R

Review Agent

Checks quality, security, consistency — and produces a video summary

A browser agent navigates the entire app, tests 300 use cases, takes screenshots, creates a video with voice-over. Two minutes — and you know exactly what works and what doesn't. QA reimagined.

Where software meets solder.

I never stopped building hardware. From amateur radio in my teens to IoT projects today — the fascination with making electrons do useful things hasn't faded.

GPS Tracker

Real-time position tracking with ESP32 + GPS module. Data via MQTT to cloud backend. Live dashboard.

Smart Home

RS485, Zigbee, Z-Wave integration. Contributions to the open-source project Homegear. Custom sensor networks.

Radio & RF

CB radio, amateur radio (HF/VHF/UHF), RTTY weather fax decoding, custom antenna builds. The foundation for everything IoT.

The reality of electronics projects

The reality of electronics projects.

Off the grid, off the road,
out of the comfort zone.

I travel to places where the road ends and the navigation gets interesting. Iceland's uninhabited highlands — multiple times, sometimes with my daughter. The American Southwest. Southeast Asia. Always drawn to terrain that demands self-reliance: no cell service, no rescue nearby, no plan B except the one you bring.

One highlight: crossing the Sprengisandur, Europe's largest stone desert. Days without civilization, glacial river crossings with unknown depth, carrying everything — fuel, water, food, spare parts. The kind of trip where breaking down isn't an inconvenience, it's a situation.

Iceland is also where I ride. Icelandic horses have a unique fifth gait — the tölt, a smooth, fast ambling pace that lets you cover rough terrain without the impact of a trot. Interestingly, some horse breeds in Latin America share a similar extra gait — the Paso Fino's fino and the Peruvian Paso's paso llano. A fascinating parallel between two regions I'm drawn to.

Iceland highlands — the full story →

Get in touch.

Whether it's about building products, IoT architecture, AI-driven development, or just a good off-road route through Iceland.

Hennef, Germany