●Available for freelance
Servet Demirhan
Growth strategist.
Performance marketing professional with 6+ years at Meta, Criteo, and leading Turkish brands — technical platform depth meets commercial strategy across AdTech, fintech, and e-commerce.
IST · 41.015°N
01 — About
Turning paid media into predictable growth.
Across six years and three countries, I've built and optimized full-funnel campaigns on Meta, Google, TikTok, and Criteo — from SMB verticals at Meta HQ in Lisbon to large-scale e-commerce and fintech accounts in Türkiye.
My work sits at the intersection of performance platforms and commercial strategy: ROAS optimization, CRM automation, attribution, and the analytics work that turns dashboards into decisions.
€4.2M+
Paid spend managed
150+
Brands served
6+
Years in market
3
Countries worked
02 — Experience
Selected roles.
tap to expand ↓
Freelance Performance Marketing Consultant
Self-employed·Istanbul
Oct 2019 – NowCurrent
Impact: 4–6 concurrent clients, avg ROAS +42% within 90 days.
- Manage full-cycle paid media (Meta, Google, TikTok, Criteo) for 4–6 concurrent clients.
- Build and optimise Shopify and WooCommerce storefronts including GTM, Meta Pixel, and GA4 setup.
- Deliver monthly performance reports with actionable recommendations tied to client revenue KPIs.
Performance Marketing Manager
Bitlo·Cryptocurrency
Mar – Jun 2025Fintech
Impact: CPA –38% in Q2, full programmatic stack launched in 6 weeks.
- Designed full programmatic media buying strategy across DSPs and social; established KPI benchmarks (CPA, ROAS, CPL).
- Launched full-funnel campaigns from awareness to conversion for web and app with structured A/B testing.
- Architected automated CRM workflows (email + push) segmented by user lifecycle stage.
- Conducted cohort analysis and audience segmentation to identify high-LTV user profiles.
Growth Manager
piyangosepeti.com.tr·Istanbul
Apr 2023 – Mar 2025E-commerce
Impact: 62% new-channel contribution to revenue, MMP + CRM shipped ground-up.
- Identified and activated new paid, organic and affiliate growth channels; managed multi-channel budgets.
- Built the company's entire CRM infrastructure from scratch — selected martech stack and designed lifecycle flows.
- Evaluated, selected and onboarded the first MMP, enabling accurate app install attribution and retargeting.
- Designed an affiliate and trade marketing programme to extend reach at lower cost-per-acquisition.
Agency Account Strategist
Criteo·Istanbul
Sep 2022 – Apr 2023Insider · AdTech
Impact: portfolio revenue +27% YoY, 3 C-level QBRs delivered quarterly.
- Managed portfolio of agency accounts; led Quarterly Business Reviews with C-level stakeholders.
- Planned and executed full-funnel Criteo campaigns (Commerce Max, Retail Media, Offsite) at or above KPI targets.
- Identified upsell and cross-sell opportunities through data analysis, generating incremental revenue.
- Coordinated cross-functionally with Technical, Analytics, Creative and Product teams to resolve escalations and accelerate campaign launches.
Associate Account Strategist
Criteo·Istanbul
Aug 2021 – Aug 2022Insider · AdTech
Impact: top-5% CSAT in EMEA pod, 12 new accounts onboarded.
- Maintained strong client satisfaction through regular structured reporting and daily optimisation.
- Analysed campaign data to surface performance gaps and growth opportunities in monthly and quarterly reviews.
- Partnered with Sales to identify upsell opportunities; onboarded new accounts smoothly.
Account Manager
Rhino Runner Digital Agency·Istanbul
Dec 2019 – Jun 2020Agency
Impact: zero-churn across brand portfolio in tenure.
- Managed a portfolio of brand accounts as primary client contact.
- Coordinated creative and strategy teams to deliver integrated digital campaigns on time and on budget.
SMB Global Business Marketing Solutions Lead
Meta (Facebook)·Lisbon
Oct 2017 – Sep 2019Insider · AdTech
Impact: consistently top-10% CSAT at EMEA SMB hub; 200+ advertisers mentored.
- Managed portfolio of high-value SMB advertisers across Facebook and Instagram at EMEA hub.
- Provided strategic consulting on the full Meta stack — Ads Manager, Business Manager, Pixel, Analytics.
- Delivered brand and digital strategy recommendations that measurably improved advertiser ROI and retention.
- Managed client relationships via Salesforce CRM; consistently recognised for high CSAT scores.
03 — Selected work
Results, anonymised.
Crypto · Q2 20256 weeks
Programmatic relaunch for a Turkish crypto exchange
Reset the full funnel across DSPs and paid social with a structured A/B testing framework and new CRM lifecycle.
↓38%
blended CPA
↑2.1×
qualified leads
Marketplace · 202412 months
Ground-up CRM + MMP for e-commerce scale-up
Selected, integrated, and governed the full martech stack — lifecycle flows delivered 62% of new-channel revenue.
↑62%
new-channel rev share
↓29%
cost per install
D2C · 202390 days
ROAS rescue for a Shopify D2C brand
Rebuilt Meta account structure, fixed GA4 + Pixel attribution, introduced creative velocity framework.
3.2 → 5.8
Meta ROAS
↑+47%
monthly revenue
04 — Toolkit
Platforms & practice.
Ad platforms
Meta AdsGoogle AdsTikTok AdsX AdsCriteo Commerce MaxCriteo Retail MediaProgrammatic DSPs
Competencies
Full-funnel performanceROAS optimizationCPA benchmarkingCRM automationA/B testingApp attributionLifecycle email & push
Stack I ship with
GA4GTMMeta PixelAppsFlyerAdjustKlaviyoBrazeActiveCampaignShopifyWooCommerceMixpanelAmplitudeNotionFigma
Verticals
E-commerceFintech / CryptoFMCGMarketplaceGaming / Lottery
05 — Credentials
Education & languages.
Education
B.A. Communication · Advertising
B.A.
Kocaeli University
2010 — 2015
Platform certifications
Meta · Criteo ×4
Languages
Turkish
Native
English
Professional
Bulgarian
Conversational
06 — Notes
Recent writing.
Why your MMP says one thing and GA4 says another
A field-tested framework for reconciling mobile attribution with web analytics without losing your mind.
Read →
A 5-lane creative testing framework for Meta in 2026
How to structure ad account testing so learnings survive Advantage+ and AI placement reshuffles.
Read →
The first 90 days of a lifecycle programme
The onboarding, reactivation, and churn flows every e-commerce brand should ship before optimising paid.
Read →
07 — Work with me
Freelance engagements.
tap a package for details ↓
Growth audit & roadmap
₺5,000 · 2 weeks
Two-week deep dive into your paid, CRM, analytics, and attribution stack. You get a prioritized 90-day roadmap.
- Channel & account audit
- Attribution / tracking review
- Scorecard + 90-day roadmap
Start within 2 weeks
Full-funnel growth retainer
₺10,000/mo + +10% from ad budget · monthly
Ongoing paid media + CRO + CRM management across Meta, Google, TikTok, and Criteo. Weekly optimisation, monthly QBR.
- 3+ channels, 1 senior owner
- Weekly ops + monthly QBR
- Creative testing framework
1 slot available Q3 2026
CRM & lifecycle build
₺15,000 · 6–8 weeks
End-to-end martech stack selection + lifecycle flows (onboarding, reactivation, churn) on Klaviyo, Braze, or similar.
- Stack selection & setup
- Lifecycle journey design
- Segmentation + MMP wiring
Project-based engagement
Fractional / advisory
₺7,500 · monthly
Monthly advisory for founders and in-house teams — strategy reviews, hiring, stack decisions, stakeholder help.
- 2 sessions per month
- Async on Slack / Loom
- Hiring & team support
Quarterly commitment
Web design & branding
₺20,000 · 4–6 weeks
Brand identity + high-performance landing page or portfolio site. Design system, responsive build, SEO-ready deploy.
- Brand identity & design system
- Responsive landing / portfolio site
- SEO + analytics setup
Project-based
Or grab a 30-min intro call
Pick a time that works — no back-and-forth, straight into the conversation.
08 — Contact
Let's build something together.
Open to freelance engagements, consulting projects, and advisory roles. Use the form or book a 30-min intro call — typically reply within 24 hours.