Marketing Strategy & Management

Your marketing is done. AI-engineered growth systems for companies that don't settle for average.

We build, operate, and scale your entire marketing infrastructure. From strategy through execution to reporting. One team. Full stack. No excuses.

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120+

Clients Served

Master Minds

Engineering

BabbelBerlin Brands GroupCleverlyDOVO SolingenPlantixTOMHartmann TresoreWarehousing1AntonSprengerThe Female CompanyKolonne NullKonifezLaoriOn PurposePflegewegweiserPhineoSignature SafesBosshammersch HofEntyre CareRengo Fresh BabbelBerlin Brands GroupCleverlyDOVO SolingenPlantixTOMHartmann TresoreWarehousing1AntonSprengerThe Female CompanyKolonne NullKonifezLaoriOn PurposePflegewegweiserPhineoSignature SafesBosshammersch HofEntyre CareRengo Fresh

Services

Full-stack marketing operations.

We don't advise. We operate. Every campaign, every channel, every optimization cycle runs through our team.

Paid Search & Shopping

Google Ads, Bing Ads, Shopping campaigns. Keyword architecture, bid management, conversion tracking, and continuous optimization.

Paid Social

Meta, LinkedIn, TikTok. Audience engineering, creative testing, retargeting funnels, and lookalike scaling.

YouTube & Video

Pre-roll, in-feed, shorts. Video creative strategy, audience segmentation, and view-through attribution.

Analytics & Reporting

GA4, GTM, custom dashboards. Attribution modeling, funnel analysis, and executive reporting with actionable insights.

Creative Production

Ad creatives, landing pages, video production. Performance-optimized design that converts across every touchpoint.

AI Engineering

Custom AI agents, automation pipelines, intelligent dashboards. We build the machines that run your marketing while you sleep.

Client Voices

What they say about working with us.

Christopher Niemann

ECommerce Manager, Unizell.de

Eine exzellent strukturierte Agentur mit einem klaren Fokus: Erfolg. Die partnerschaftliche Zusammenarbeit ist vorbildlich. Es ist mir stets eine Freude, mit John und Christina zusammenzuarbeiten. Top.

Kima Harring

Marketing Manager, Warehousing1.com

Sehr gute Zusammenarbeit mit McGrinsey. Super sympathisch, kompetent und effizient. Sie bemuehen sich immer gemeinsam mit uns die bestmoeglichen Loesungen zu finden. Die Zusammenarbeit macht super Spass!

Sebastian Goeritz

CMO, EntyreCare.com & Pflegewegweiser.ch

Das ist das beste Set-Up, das man in 5 Werktagen hinbekommen kann, danke McGrinsey - habt ordentlich Gas gegeben!

Falk Olias

Managing Director, Runa Reisen

McGrinsey kann alle Themen von Standard bis Skalierung abbilden. Der Beratungsteil ist sehr gut.

The Team

Two minds. One machine.

25+ years combined experience in performance marketing, growth engineering, and AI systems. We don't delegate your success.

John

Founder & CEO

Starten statt warten. Es heisst Startup, nicht wart's ab. Happy Clicking & Happy Growth Hacking.

Book a call

Christina

Co-Founder & COO

Zahlenfuchs mit Effizienzdrang und klarem Blick fuers Ganze. Marketing-Systeme wie LEGO. CEO = Chief Efficiency Officer.

Track Record

Clients we scaled.

Startups to enterprises. Every engagement backed by data, driven by systems.

McGrinsey Clients

Brand	Start	Signal	Status
Warehousing1	2019	+10 Mio EUR invest 2022	Series A
Cleverly	2021	+5 Mio EUR invest 2023	Seed
Plantix	2021	+6.6 Mio EUR invest 2022	Exit
Entyre Care	2023	+1.6 Mio EUR invest 2023	Global Expansion
TOM	2022	+1.4 Mio USD invest 2023	Early Stage
Anton	2022	Top App	Growth
Founder Career Experience
Babbel	2021	1.5 Billion EUR	Unicorn
Berlin Brands Group	2021	1.8 Billion EUR	Unicorn

Thought Cards

We don't build campaigns. We build systems that build campaigns.

Your marketing is done. Not because it stopped. Because it runs itself.

No ad budget can replace what a well-placed thought achieves.

Your competitor advertises. You think ahead.

Compounding returns instead of linear effort. That's the difference.

Systematic. Measurable. Reproducible. That's not magic. That's engineering.

Capabilities

Full-spectrum marketing infrastructure.

Six disciplines. One integrated system. Every channel engineered for compound growth.

Paid Search & SEA

Google Ads, Bing Ads, Shopping campaigns. Keyword architecture, bid algorithms, quality score engineering.

Social

Social & Meta Ads

Meta, LinkedIn, TikTok. Audience architecture, creative testing frameworks, lookalike modeling at scale.

AI Engineering

Custom AI agents, automated reporting pipelines, LLM-powered content generation and campaign optimization.

Data

Analytics & Tracking

GA4, GTM, server-side tracking, attribution modeling. Full data infrastructure from pixel to dashboard.

Creative

Creatives & Content

Performance creatives, video production, landing pages. Systematic A/B testing with statistical rigor.

Strategy

Strategy & Controlling

Market analysis, budget allocation, KPI frameworks, monthly reporting. Full transparency, zero guesswork.

Methodology

Systematic growth, not guesswork.

Every engagement follows the same rigorous process. We measure everything, optimize continuously, and report transparently.

Audit & Architecture

Complete analysis of your current marketing stack, tracking setup, and competitive landscape. We map the terrain before building.

Setup & Infrastructure

Tracking, attribution, campaign architecture, audience segments, creative assets. Built for scale from day one.

Launch & Optimize

Campaigns go live. Daily monitoring, weekly optimizations, bi-weekly reporting. Performance compounds over time.

Scale & Expand

Once unit economics work, we scale. New channels, new markets, new creatives. Controlled growth with full P&L visibility.

Technology Stack

Platform-agnostic. AI-native.

We operate across all major advertising and analytics platforms. We build custom AI systems on top. Certified. Experienced. Battle-tested.

Google Ads Google Analytics 4 Google Tag Manager Meta Ads LinkedIn Ads TikTok Ads YouTube Ads Bing Ads Looker Studio HubSpot Pipedrive Salesforce Shopify OpenRouter Claude API Custom AI Agents Semrush Ahrefs

Industries

SaaS, B2B Technology, E-Commerce, Professional Services, FinTech, HealthTech, Education, Manufacturing.

Get in Touch

Let's build your machine.

No pitch decks. No fluff. A focused conversation about your goals and how we get there.

Book a Video Call

Schedule on Calendly

john@mcgrinsey.com

Phone

+49 30 22189753

Location

Berlin, Germany

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Your marketing is done. AI-engineered growth systems for companies that don't settle for average.

Full-stack marketing operations.

What they say about working with us.

Two minds. One machine.

Clients we scaled.

Full-spectrum marketing infrastructure.

Paid Search & SEA

Social & Meta Ads

AI Engineering

Analytics & Tracking

Creatives & Content

Strategy & Controlling

Systematic growth, not guesswork.

ENTER
THE PORTAL

Platform-agnostic. AI-native.

Watch. Learn. Build.

Press Play.

Let's build your machine.

Let's build your machine.

Cookie Settings

Your marketing is done. AI-engineered growth systems for companies that don't settle for average.

Full-stack marketing operations.

What they say about working with us.

Two minds. One machine.

Clients we scaled.

Full-spectrum marketing infrastructure.

Paid Search & SEA

Social & Meta Ads

AI Engineering

Analytics & Tracking

Creatives & Content

Strategy & Controlling

Systematic growth, not guesswork.

ENTERTHE PORTAL

Platform-agnostic. AI-native.

Watch. Learn. Build.

Press Play.

Let's build your machine.

Let's build your machine.

Cookie Settings

ENTER
THE PORTAL