AI & Organic
Search Strategist

Hi! I’m Apostolis Lianos, Head of SEO, GEO & AI Search at ON.marketing. Since 2017, I’ve led organic growth and AI Search visibility strategies for 220+ brands across eight countries, spanning eCommerce, SaaS, and other competitive industries. Along the way, I built one of Greece’s largest SEO departments from the ground up and helped lead ON.marketing to Search Agency of the Year in 2026. Combining a startup founder’s mindset with deep search expertise, I build and scale systems that turn organic visibility into measurable business growth and lasting competitive advantage.

Explore Case Studies Book Consultation

220+

Brands / Search Projects

International Markets

SEO Specialists Built & Led

Agency of the Year

Search & Discovery 2026 · ON.marketing

Proven Growth Systems

Results & Case Studies

Selected work across enterprise migration, publisher architecture, commercial Search, B2B SaaS and new-brand launches.

MediaMarkt & Public Group

Domain Consolidation

Leading Enterprise Search Governance Across a 76,000+ URL Domain Consolidation

Led the Search workstream for the MediaMarkt-to-Public consolidation, coordinating a 58-point migration framework, redirect governance for 76,000+ URLs, backlink migration and cross-functional execution across technical and commercial stakeholders.

76K+ URLs Enterprise Migration Governance

Leroy Merlin

Home Improvement & DIY

Building an Always-On Search & GEO Growth System

Developed semantic category hubs and search-led landing-page architecture around high-intent renovation demand, combining content, information architecture and ongoing SEO/GEO optimization into a repeatable growth system.

+166% YoY Traffic Growth

ContactPigeon

Global B2B MarTech SaaS

Building Organic & AI Discovery for a Global B2B MarTech Platform

Built international Search strategy across high-intent product demand, educational content, digital authority and GEO. The broader growth programme expanded organic visibility and third-party authority while positioning the product for retrieval and recommendation across emerging AI-search journeys.

Top-2 US Google US Rankings

Uniko

Real Estate / Zero-to-One Search

Embedding Search Into a New Brand From Day One

A zero-to-one Search programme built around launch-stage architecture, technical foundations, search-demand mapping and content discovery. The wider ON.marketing programme reached first-page Google visibility for the real-estate market three months after launch.

2× Gold — Search & Discovery Awards 2026

Google Page 1 In 3 Months

AB Vassilopoulos

FMCG eCommerce

Growing Organic Revenue Through Search Intent & Structured Data

I managed organic revenue optimization for Greece's leading supermarket chain during the competitive holiday season. By combining structured schema markup with search intent optimization, I increased yearly organic digital revenue by 55% across critical product categories.

+55% YoY Organic Revenue

Public.gr

Consumer Electronics Retail

Achieving Google's #1 National Rank During Black Friday

Drove Public.gr to the top of national search rankings for major retail events. The programme combined event-led demand capture and organic retail execution, delivering 30% growth in yearly organic revenue and 72% growth in organic traffic.

+30% YoY Organic Revenue

PeoplePerHour

Global Freelance Marketplace

Converting a Global News Event Into Search and Brand Visibility

Developed a Brexit-focused destination campaign combining search-demand analysis, dedicated content and international Digital PR. The initiative achieved all three leading Google positions in under two months and secured coverage from major business publications.

Top 3 in <2 Months Google Visibility

TWC IT Solutions

B2B Technology & Cybersecurity

Driving 266 MQLs Through an Integrated UK B2B GTM Strategy

Led a UK-focused go-to-market programme combining SEO, data-led content, Digital PR, paid media and targeted outbound. The initiative reached approximately 1,900 London businesses and generated 266 Marketing Qualified Leads.

266 MQLs UK Demand Generation

Douleutaras/YourPro

Home Services Marketplace

Scaling Local Search for a Home Services Marketplace

I built structured local search architectures and expanded regional visibility for a leading home services marketplace. This organic strategy increased yearly website traffic by 46% and generated a significant volume of high-quality local customer leads.

+46% YoY Organic Growth

SlashData

B2B Tech

Scaling Global Demand Generation for a Developer Intelligence Leader

Led key elements of SlashData's organic-led GTM strategy, aligning SEO, content, paid media, outbound, and digital PR to increase qualified demand for the company's webinars. The initiative delivered the strongest MQL performance in recent years.

MQL Uplift Global Strategy

01 / 10

Awards & Distinctions

Selected Honours

Selected career highlights, individual professional recognition, and contributions to education and knowledge sharing.

BOUSSIAS · ON.marketing 2026

Search & Discovery Agency of the Year

ON.marketing received the Agency of the Year title at the inaugural BOUSSIAS Search & Discovery Awards.

Read Announcement

MarketingWeek 2024

E-Commerce 100 Powerlist

Nominated to the powerlist highlighting Greece's top 100 digital practitioners shaping progressive organic performance strategy.

BOUSSIAS Awards 2024

Growth Hacking Jury Panel

Formally appointed as an industry evaluator to review and grade multi-channel submissions and corporate campaigns.

Infocom Changemakers 2015

Guest Speaker

Invited keynote speaker on failure, adaptation, and data-driven lessons learned while launching startups in the Mediterranean.

Stavros Niarchos Foundation 2017-2018

Lecturer at Found.ation

Conducted educational tracks on social media optimization and intro to coding courses for Stavros Niarchos Foundation participants.

Proprietary Frameworks

Signature Methodology

Systems I’ve developed to connect search demand, technical architecture, content, digital authority and AI discovery with measurable business outcomes.

Search Demand Intelligence

SEO/GEO SUPERMAP

A proprietary market-mapping system connecting products, services, entities, search demand and competitive visibility across the customer journey. It identifies where a brand should compete, which assets should exist, and how Search priorities connect to commercial opportunity. Demand → Coverage → Prioritization → Execution.

Search Ecosystem Architecture

Omnichannel SEO/GEO

A cross-functional operating model connecting Technical SEO, content, PR, social, product, internal linking and brand signals so Search growth is built across the discovery ecosystem rather than within an isolated SEO channel.

Earned Authority & Third-Party Validation

SEO/GEO PR

A Digital PR model that turns proprietary data, expert insight and commercially relevant stories into authoritative third-party coverage — strengthening organic authority and increasing the external evidence AI systems may retrieve, cite or use for recommendation context.

Operating Principle

Destination SEO/GEO

Become the Best Online Destination for the Demand That Matters. For each strategically important topic or commercial need, build the most useful destination a searcher could land on. Technical health creates access; usefulness, depth, experience and authority create preference.

Applied Verticals

Industry Expertise

Search systems behave differently by business model. My experience spans three environments where architecture, demand and commercial outcomes have to scale together.

Enterprise eCommerce

Large taxonomies, faceted navigation, migrations, internal linking, structured data and commercial category demand.

B2B SaaS

Complex buying journeys, product/category creation, non-branded demand, third-party validation, GEO and pipeline-oriented measurement.

Marketplaces & Publishers

Template-led scaling, entity architecture, internal linking, crawl governance and high-volume search-demand capture.

Track Record

Career Milestones

From startup builder to Search department leadership.

2022 - Present

Head of SEO, GEO & AI Search

ON.marketing — 👑 Search Agency of The Year

Built and led one of Greece’s largest specialist Search teams, scaling the practice across 220+ projects and eight international markets while maintaining 91% client retention. My remit spans Search strategy, technical SEO, GEO/AI Search, content systems, Digital PR, team development, client leadership, and commercial growth. Since 2020, my team and I have earned 29 SEO/GEO industry awards, culminating in ON.marketing being named Search & Discovery Agency of the Year and Grand Winner — Strategy Excellence in 2026.

2017 - 2022

Growth Marketer

ON.marketing

Joined ON.marketing during its early growth stage and helped build the Search practice from its first accounts into a scalable client offering, working hands-on across technical SEO, content, digital PR and organic growth strategy.

2015 - Present

Co-Founder / Marketing & eCommerce Manager

TetragonoBookstores.gr

Scaled a local brick-and-mortar bookstore into a nationally competitive eCommerce business, generating six-figure annual online revenue by year four and serving 260+ schools across 27 municipalities. Built and managed the entire eCommerce and digital marketing operation, introducing innovative services such as Greece’s first School Bag Warranty. These efforts earned us recognition from POLO S.A., a leading school bag brand, as its #1 online retailer, while I was also named among Greece’s Top 100 eCommerce Professionals.

2016 Distinction

Winner — CruiseInn Startup Competition

Celestyal Cruises

Led a startup team to win first place in a fast-paced tourism and marine entrepreneurship competition. Pitched our digital service business model to industry executives and investors during a live startup event.

2013 - 2015

Co-Founder / Marketing & Business

tizU.co

Co-founded a mobile consumer engagement startup incubated by COSMOTE StartUp, a Deutsche Telekom-backed accelerator. Selected by LAUNCHub Ventures as one of 11 startups from nine countries, showcased our concept at Web Summit, and earned a Business Insider feature for Best Startup Logos. Beyond the recognition, this was a true bootstrapping experience: for nearly nine months, my co-founder and I lived on a combined daily budget of just €5, investing everything we could into building the business.

2012 - 2013

Co-Founder / Marketing

Pinobo.com

Co-founded an early-stage social discovery startup. Our product concept was selected for startup incubation, where we managed early marketing experiments and digital brand positioning.

2011 Distinction

Winner — Modus Vivendi Entrepreneurship Competition

IST College

Won first place in a national entrepreneurship competition with an innovative theme park business plan. The pitch focused on experiential cultural tourism, securing a full academic scholarship as the main prize.

2010 Distinction

National Winner — L’Oréal Brandstorm

L'Oréal Hellas

Won a national marketing competition and represented Greece at the global finals in Paris. We pitched a comprehensive consumer product launch strategy to global executives, competing against teams from forty-one countries.

Thoughts & Industry Contribution

Published Insights

Research, frameworks and Search perspectives published or featured by industry publications.

Search Engine Land

Cloudflare's Pay Per Crawl Campaign Analysis

Core idea: a technical crawl-policy announcement can become a clear Digital PR story when it is tied to a timely industry debate and supported by verifiable evidence.

Read Case Study

MarketingSherpa

Building Intent-Led Lead Acquisition Frameworks

Core idea: map seasonal intent into useful, structured landing pages, then measure whether those pages capture qualified demand.

Read Case Study

Grit Daily News

Staying Ahead of Dynamic Core Algorithmic Updates

Core idea: distinguish confirmed algorithm changes from correlation by documenting changes, testing hypotheses and tracking outcomes.

Read Feature Article

Beyond the Numbers

What Others Say About My Work

Unfiltered recommendations and leadership perspectives from executive partners, cross-functional collaborators, and team members.

LinkedIn Recommendation “

“Working with Apostolis was a real pleasure. I found him as who has great expertise as well as profound knowledge of digital marketing solutions. Proactive, dynamic and totally organized. Brilliant SEO Specialist. Apostolis leads by example and many digital marketers find his enthusiasm and dedication both inspiring and motivating. Whenever I had a problem, there has never been a time he has left me without a solution. Apostolis always maintains a very good relationship with co-workers and clients. I have constantly felt Apostolis was one of the most effective people I have ever had the privilege of working with.”

Stavros Theodoratos

Digital Marketing Director @ Novibet

LinkedIn Recommendation “

“I first met Apostolis back in 2016 at a startup cruise, where his team ended up dominating the competition. Since then, I’ve known him through both the startup community and our professional work, which gave me a clear view of how he approaches new ideas and real business problems.

He knows SEO/GEO, Organic Growth and the changing search landscape inside out, but what makes him especially valuable is that he always connects the work back to the business: where growth can come from, what matters most and what is actually worth doing.

He brings a rare mix of commercial instinct, deep search expertise and ownership. I’d recommend Apostolis without hesitation to any ambitious company.”

Angelos Dimoglis

Microsoft Fabric Data Engineer | Power BI | SQL | PySpark

LinkedIn Recommendation “

“I had the pleasure of working with Apostolis for about three years. He was instrumental in my career transition, giving me the confidence, knowledge, and strong foundation that continues to support me in my professional journey.

His expertise, problem-solving mindset, and genuine team spirit truly stand out. I highly recommend him for a managerial role and would be excited to work with him again. He excels in both hard and soft skills, you don’t come across people like him often.”

Angelina Matziaraki

SEO & GEO Specialist | Content Strategist | B2B SaaS

Let’s Talk

Book a Consultation Session

Select a convenient 30-minute time slot to discuss organic search architecture, enterprise migrations, or AI search discovery.

AI & Organic Search Strategist

Results & Case Studies

Leading Enterprise Search Governance Across a 76,000+ URL Domain Consolidation

Building an Always-On Search & GEO Growth System

Building Organic & AI Discovery for a Global B2B MarTech Platform

Embedding Search Into a New Brand From Day One

Growing Organic Revenue Through Search Intent & Structured Data

Achieving Google's #1 National Rank During Black Friday

Converting a Global News Event Into Search and Brand Visibility

Driving 266 MQLs Through an Integrated UK B2B GTM Strategy

Scaling Local Search for a Home Services Marketplace

Scaling Global Demand Generation for a Developer Intelligence Leader

Selected Honours

Search & Discovery Agency of the Year

E-Commerce 100 Powerlist

Growth Hacking Jury Panel

Guest Speaker

Lecturer at Found.ation

Signature Methodology

SEO/GEO SUPERMAP

Omnichannel SEO/GEO

SEO/GEO PR

Destination SEO/GEO

Industry Expertise

Enterprise eCommerce

B2B SaaS

Marketplaces & Publishers

Career Milestones

Head of SEO, GEO & AI Search

Growth Marketer

Co-Founder / Marketing & eCommerce Manager

Winner — CruiseInn Startup Competition

Co-Founder / Marketing & Business

Co-Founder / Marketing

Winner — Modus Vivendi Entrepreneurship Competition

National Winner — L’Oréal Brandstorm

Published Insights

Cloudflare's Pay Per Crawl Campaign Analysis

Building Intent-Led Lead Acquisition Frameworks

Staying Ahead of Dynamic Core Algorithmic Updates

What Others Say About My Work

Angelos Dimoglis

Angelina Matziaraki

Book a Consultation Session

AI & Organic
Search Strategist