Yalcin K.

Marketing Measurement & Optimisation

I help businesses fix conversion tracking, connect marketing and customer data, and identify where to improve advertising performance. As a consultant and agency owner, I’ve worked with clients overseeing more than $100M in advertising spend, including BBC, McDonald’s and Onnit. I work with founders, marketing teams, and product leaders across e-commerce, SaaS, consumer tech, and media. My work connects the full customer journey from the first ad click through to purchase, repeat revenue, and lifetime value so you can make better decisions about what to fix, stop, test, or scale. What I can help with • Conversion tracking and technical audits: Meta Pixel, Conversions API (CAPI), GA4, and Google Tag Manager. Diagnose missing or duplicate events, attribution gaps, and broken tracking across customer journeys. • Marketing measurement and attribution: Join advertising data with first-party customer, order, and revenue data to understand which campaigns and creatives generate paying customers. • Performance analysis and optimisation: Evaluate acquisition costs, funnel drop-off, conversion rates, cohort performance, ROAS, and customer lifetime value. Turn findings into practical recommendations for budget allocation and testing. • Data integrations and automation: Connect advertising platforms, analytics tools, databases, CRMs, and lifecycle marketing systems. Improve data quality and reduce manual reporting. • Reporting and analytical frameworks: Define meaningful metrics and build reporting that helps your team understand performance and act on it. *I slashed my rates by more than 50%* I’m the founder of Vendo, which I’m building to streamline marketing tracking, reporting, and AI-powered analysis. I use Vendo as my internal consulting tool to support investigations and analysis, alongside my own technical work and judgment. I’m looking for early customers and focused consulting projects to help refine the product through real business problems. As part of that, I’ve reduced my normal consulting rate by more than 50%. You’ll work directly with me. We can work with your existing stack and establish whether Vendo is a useful fit for your business. If your tracking is unreliable, your reports disagree, or you can’t confidently connect marketing spend to customer revenue, send me a brief overview of your setup and what you need to understand.