David Alexander Pfeiffer
Founder @P5-Technology
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WORK HISTORY
Founder @P5-Technology
Aachen, DE
Software engineering company based in Aachen, Germany, through which I have fulfilled various B2B projects and taught coding bootcamps.Notable projects include a trading bot and trading platform for Bitcoin Runes, developed for a client in Dubai, as well as a full-stack Java/Spring/TypeScript/Angular bootcamp for Deutsche Telekom employees, spanning a 12-month program of intensive training and a practical phase.Currently paused as I focus on my freelance work.
EDUCATION
RWTH Aachen University
Bachelor of Science, Computer Science
ABOUT DAVID ALEXANDER PFEIFFER
Full Stack Engineer, Instructor & Entrepreneur based in Aachen, Germany.I\'ve been building software professionally and as a hobby for over a decade, with a broad stack spanning TypeScript, Rust, Java, Python, Dart, and more. I\'m a Linux enthusiast and have a growing passion for Rust - from systems programming to game engine development with Bevy.On the product side, I\'ve co-founded and served as CTO at three startups, Loyaltyverse, Emprove, and a stealth startup in processor technology, been selected for the Antler Startup Accelerator in Berlin through Emprove, and contributed as a Product Engineer at Langfuse (YC W23) on a high-throughput LLM observability platform.I am working as an Industrial Fullstack Developer at ANTICIPATE in Aachen, where I am using Rust, Typescript, Svelte and Python to work on industrial machine learning products for automated visual parts inspection.On a freelance basis I am engineering a WhatsApp marketing automation system for a client, supporting 50+ of their B2B clients, built from scratch as a multi-tenant service-oriented architecture in TypeScript.Alongside engineering, I teach short coding bootcamps - from beginner JavaScript and React to enterprise Java/Spring/TypeScript/Angular - for clients including DB Systel, ITZBund, and Deutsche Telekom, hosted by third-party providers.I view complex systems as creative puzzles - initially opaque, yet deeply rewarding as each piece falls into place. I thrive in agile environments, love sharing knowledge, and am always driven by a passion for understanding how things work at their core.
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