Turning paid ads into profitable growth.
GetYourGuide hired me back as a freelancer for 1000+ hours after I left full-time.
Performance
Marketing
2026©
* (farvero)
Ilja Zonov is a performance marketing consultant from Barcelona, Spain and the founder of Farvero
Truth creates growth
(01) The problem
GA4 says 50 conversions. Google Ads says 120. Your CRM says 35. If you can't say which is real in 10 seconds, every decision rests on fiction.
A 30-page PDF full of impressions, CTR and “brand awareness.” You nod along, but still can't answer how much profit your ads produced.
(02) How I work
We start with your business model, not your ad platform. Real target CPA, ROAS, LTV.
GA4, GTM, server-side tracking, CRM, attribution. Every touchpoint connected. The step most agencies skip.
Google, Meta, Microsoft, Apple, Criteo. Structure, creative, bidding, audiences. Hands-on, never templated.
Revenue, CPA, ROAS, funnel health — updated daily, in your BI tool. You own it.
Weekly optimization. A/B tests on creative, audiences, pages. Scale what works.
New display channel integrated into a multi-million-EUR tracking ecosystem in three months.
GA4, GTM, Google Ads, Meta, dashboards and CRM for a marketplace launching nationwide.
An ML bidding model replacing rule-based scripts across five million placements.
(04) Services
Google, Meta, Microsoft, Apple, Criteo. Strategy, structure, bidding, creative. Web & app.
GA4, GTM, server-side (sGTM), CRM integration, MMPs. The truth layer beneath every decision.
Live dashboards in your BI tool. Revenue, CPA, ROAS, funnel, updated daily. You own it.
Attribution setup, incrementality testing, deduplication. Know what actually drives growth.
Performance banners at scale, copy testing. Human concepts, systematically scaled.
Funnel diagnostics, landing-page review, a prioritized action list. Not a 50-page deck.
(06) Bio
I'm Ilja, a performance marketing consultant based in Barcelona. Nine years turning paid advertising into measurable, profitable growth, four of them at GetYourGuide, managing multi-million euro budgets, who later brought me back as a freelancer for 1000+ more hours.
More about me →(07) Testimonials
"The project helped us move from intuition-based discussions to evidence-based decisions."
“One of the best I have ever worked with. Ilja initiated one of the most remarkable success case studies in my org.”
“Exceptional ability to manage and optimize multi-million euro campaigns. A driver of innovation and growth.”
“Deep understanding of tags, GTM and feed management. Built an ad builder that could create millions of variations.”
“Exceptional collaborative spirit. Proficiency with SQL. The kind of marketer who speaks the language of engineers.”
“One of the best I have ever worked with. Ilja initiated one of the most remarkable success case studies in my org.”
“Exceptional ability to manage and optimize multi-million euro campaigns. A driver of innovation and growth.”
“Deep understanding of tags, GTM and feed management. Built an ad builder that could create millions of variations.”
“Exceptional collaborative spirit. Proficiency with SQL. The kind of marketer who speaks the language of engineers.”
“Ilia is a personal team tech guru. Super proactive and deeply cares to meaningfully support his team.”
“You don't have a big ego, which makes it easier to be candid. You know your stuff and are always open.”
“The first person outside Data Product to initiate a concrete plan to bring tracking to the next level.”
“Ilia is a personal team tech guru. Super proactive and deeply cares to meaningfully support his team.”
“You don't have a big ego, which makes it easier to be candid. You know your stuff and are always open.”
“The first person outside Data Product to initiate a concrete plan to bring tracking to the next level.”
(05) Pricing
Your monthly ad spend
You'd pay €3,500 / mo Above €50K I tailor a custom rate.
…because you shouldn't scale spend on numbers you can't trust.
€2,000 base, plus 15% of spend — dropping to 8% as you scale.
30–50% less than a mid-tier agency — direct with me.
(08) Common questions
Yes. Accounts, tracking, dashboards, strategy, everything stays with you. No vendor lock-in, no black boxes.
No — only B2C: consumer apps, eCommerce, marketplaces. That's where I know the channels, the funnels and the numbers cold.
Around €5k/mo. Below that you don't need a senior consultant yet — a good checklist will do more for your money.
Most clients see positive ROI within 4-8 weeks. Tracking improvements show in the first week; campaign gains by week 3-4.
Barcelona, Spain. I work across Europe and the US. Native German, English and Russian; working Spanish.
I'm not for everyone. Skip me if:
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