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The Arreat Summit

Eleftherios “Lefto” Chatziandreou

Growth  •  Leadership  •  Builder

Marketing leader specializing in organic growth.
18+ years building and scaling acquisition across travel, automotive, and marketplace platforms.

Organic growth is my core, and SEO is the foundation I’ve built it on for 18+ years.
Strategies across SEO, content, affiliate, and B2B partnerships. Multiple markets, languages, and verticals. Technical background. Bias toward execution.

Chronicles of Employment

Head of Inbound Marketing
Instamotion Retail GmbH  •  Munich  •  2023–2025
Led inbound acquisition via SEO, affiliate, partnerships, and organic social for an automotive marketplace.
SEO
+85% Sessions  •  +106% Leads  •  +15% Orders YoY
Affiliate
+1053% Sessions  •  +519% Leads  •  +223% Orders
Partnerships
+45% Sessions  •  +9% Orders
Ops
-25% Partner Placement Costs  •  AI-driven content workflows introduced
Head of SEO
Hey.Car - Mobility Trader GmbH  •  Berlin  •  2021–2023
Owned and scaled SEO strategy across core product and magazine platforms in Germany, UK, ES, FR, NL. Joined during a Core Web Vitals impact and rebuilt from there.
+25% YoY Organic Visibility
+10% Traffic via new content format launch
-20% Agency & Vendor Costs via consolidation
Launched Hey.Car’s first SEO-focused white-label solution
5 European markets managed across group
Chief Growth Officer
Virail GmbH  •  Berlin  •  2020–2021
Led growth, marketing, and product across 40+ international travel platforms. Owned strategy, budgeting, P&L, and product roadmap.
-20% CPA via full Google Ads rebuild using Search Console data
+20% CVR via frontend UX redesign
Launched Car Rentals vertical across 5 markets (DE, FR, ES, IT, UK)
Co-led backend migration to modern architecture with CTO
Global SEO
CarRentals GmbH / Expedia Group  •  Hamburg  •  2018–2020
Improved organic visibility and revenue for CarRentals, AutoEscape, and CarDelMar across US and EMEA. Migrated 3 brands into a single scalable platform.
+50% Visibility for CarDelMar  •  +10% for AutoEscape
85%+ Visibility recovered for CarRentals post-Google update
+5% US Revenue  •  +70% EMEA Revenue during migrations
€250K+ Annualized incremental revenue from SEO experiments in year one
Global SEO
trivago NV  •  Düsseldorf  •  2013–2018
Scaled SEO infrastructure, editorial content strategy, and organic visibility across 55 localized hotel search platforms. Collaborated with 30+ stakeholders across 9 departments.
Built algorithm indexing and interlinking 110M+ pages
Oversaw editorial production of 30,000+ unique hotel descriptions per year
HTTPS rollout across all platforms: -30% page load time, +4% SEO revenue share
Reversed Google manual penalties: +49% revenue FR, +70% revenue UK
Transitioned link-building from paid links to earned editorial content (Room5, Check-In blogs)
Built SEO monitoring tools and workflows for 40+ SEO specialists

Artifacts Forged

Set Items: Built Products

Runes of Recognition

SEOBarCamp London
STAT Crawl London
SEMrush Super League
SEO Community Days
Featured in SEMrush, SerpStat, and MintTwist alongside Booking.com, Amazon, and Vodafone.
Judging committee: PeakAwards.gr (2018–2021)  •  DigitalMarketingAwardsCY (2020–2021)

Seeking New Quests

Available For
◆Fractional or interim Head of SEO / Head of Marketing
◆Full-time senior roles in travel, mobility, B2B SaaS, or marketplace platforms
◆Consulting where organic growth is a strategic priority
Based in Germany (Schleswig-Holstein).
Open to remote, hybrid, or occasional commute to Berlin or Munich.