Growth Strategist, Performance Marketer, Developer, Data Scientist and Unicorn.
Hi, I'm Georg, a London based Growth Hacker, Data Scientist, and Developer with 14 years of experience turning ideas into thriving businesses. Today, everyone claims to be a developer or data scientist as long as they have an AI prompt open. Take it away and they can't write a line of code or query a dataset on their own. They need their AI prompt the way a junkie needs a needle, and that dependency is a liability that exposes your business to real risk. I have 14 years of hands on experience in data science, development, and performance marketing. No crutches. No copy paste from ChatGPT or Claude Code. Just the real skillset to actually move the needle when growing your business. Oh, I am fluent in English and German 😘
A comprehensive deep dive into 18 lesser-known but highly effective psychology principles for conversion and retention. From goal-gradient acceleration and temporal landmarks to identity-based marketing, implementation intentions, foot-in-the-door, labour illusion, operational transparency, defaults as nudges, status games, sunk cost retention, social comparison, reactance, and risk reversal. Includes research data, Python code for measuring impact, and practical implementation strategies backed by academic literature.
A comprehensive deep dive into the mathematics that powers growth marketing and data-driven decision making. From LTV:CAC ratio and payback period to cohort analysis, survival analysis with Kaplan-Meier curves, Bayesian A/B testing, multi-armed bandits with Thompson sampling, marketing mix modelling vs attribution, power law distributions, price elasticity with Van Westendorp's price sensitivity meter, and the compounding math of retention. Includes LaTeX formulas, Python code, visual explanations, and practical implementation guidance for both beginners and advanced practitioners.
A comprehensive deep dive into the psychology of scarcity, urgency, and loss aversion in marketing and product design. From Cialdini's scarcity principle to the endowment effect and IKEA effect. Includes when each strategy works (and when it destroys trust), how to measure effectiveness with data science, and Python code for experimentation.
A comprehensive deep dive into the psychology of pricing. From anchoring to prospect theory, learn the cognitive biases that shape how customers perceive value. Includes when each strategy works (and when it backfires), how to measure effectiveness with data science, and Python code for A/B testing your pricing experiments.
A deep dive into test driven and behaviour driven development for APIs that connect separate web applications. Covering the unique challenges of distributed systems, contract testing, consumer driven contracts, and how proper testing becomes your most reliable documentation. With detailed comparisons of testing tools for Ruby on Rails and Django.
A comprehensive deep dive into background job processing with Sidekiq and Redis (now Valkey). Why independent jobs are critical, how one failing job can bring down your entire system, and battle tested patterns from real production applications. Includes extensive code examples and hard won lessons.
