ABOUT ME
A performance marketer who builds.
I'm Marcel Jendrusch, a performance marketing manager who got tired of waiting for tools that think like a media buyer. So I built one. I run paid growth across Meta, TikTok, Google and Apple Search Ads, and I treat ads and funnel as a single system. Adscalr is the AI ad-intelligence platform I designed, coded and shipped solo in three months.
HOW I WORK
Ads and funnel are one system.
Most teams optimize the ad and the landing page in separate silos. I don't. Every decision (hook, audience, budget, page, retention) gets measured against payback, not vanity metrics. That full-funnel view is exactly what I encoded into Adscalr: a closed loop that analyzes, generates, measures and learns.
FEATURED PROJECT
Adscalr, built solo, in three months.
A complete AI toolkit for performance marketing, built on Claude with custom agents. Not a wrapper. A closed-loop learning system.
- Automated competitor analysis across Meta, TikTok & Google, surfacing winning angles, pain points and creative patterns
- Data-driven creative concepts, UGC scripts and storyboards grounded in proven market mechanics
- ML-assisted budget allocation, fatigue detection and statistical validation (Bayesian shrinkage)
- 11 Guardian Skills that auto-review every output for statistical accuracy, strategic coherence and cost
- Full dashboard: competitor intelligence, ad-performance tracking and a creative workshop
EXPERIENCE
Where I've done it.
End-to-end ownership of paid growth across Meta, TikTok, Google and Apple Search Ads. Built AI workflows and Claude agents to accelerate creative iteration and market intelligence, and owned full-funnel analysis from ad creative to retention.
Scaled the early user-acquisition structure with systematic creative and audience testing, grew budget responsibility, and delivered the performance reporting that informed product decisions.
Operational ownership, team coordination and strategic planning across product and marketing, brand, website and cross-department workflows.
Two decades of content, SEO, copywriting and audience growth, including running my own YouTube and Twitch channels. Where I learned that attention is earned before it's bought.
SKILLS & TOOLS
The toolkit.
Meta Ads · Google Ads · TikTok Ads · Apple Search Ads
GA4 · GTM · Conversion API · Search Console · Attribution (Adjust)
Claude (daily) · custom Claude agents · AI workflows · prompt engineering
ROAS / CPA / payback optimization · creative strategy · funnel analysis · A/B testing · budget allocation
Dashboard development · HTML/CSS · SEO · Shopify · email automation
German (native) · English (fluent)
EDUCATION
Background.
Focus: Marketing & Business Psychology
Economics & Administration
Informatikkaufmann
Hiring someone who takes an idea from zero to a working product?
That's exactly what I do. Let's talk.