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About

Full-Stack Web Developer & AI Specialist specializing in multilingual, cross-browser customisations, performance, AI/ML, and LLM Optimisation (LLMO). Passionate about the intersection of web performance, user experience, and future-ready content architecture.

Gdynia, Poland
Mariusz Szatkowski - WordCamp Gdynia 2025, photo by Gerard Urbański

Mariusz Szatkowski – WordCamp Gdynia 2025. Photo: Gerard Urbański

Mariusz
Szatkowski

Available for projects

Key Skills

WordPress WooCommerce PHP 8.x React Astro Node.js AI Agents LLMs LLMO GEO (Generative Engine Optimization) AEO (Answer Engine Optimization) AIEO (AI Engine Optimization) Machine Learning Python AWS Google Cloud Shopify Plus GTM/GA4/BigQuery CRO JSON-LD Schema.org Performance Optimization Core Web Vitals Sage/Bedrock HubSpot SEO/SEM Redis GraphQL Rest API Git Cloudflare Project Management

Certifications

  • Google Analytics Individual Qualification
  • Google My Business Certificate
  • Shopify: CRO Analysis and Optimization
  • Shopify: CRO Implementation and Testing
  • Shopify: CRO Overview and Best Practices
  • Shopify: CRO Targeting and Personalization
  • Shopify: Conversion Rate Optimization with Shopify Learning Path
  • Shopify: Marketing Your Shopify Services as a Partner
  • Shopify: Liquid Storefronts for Theme Developers
  • Shopify: Creating a Digital Marketing Strategy

Connect

/in/mariuszszatkowski
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Years of Professional Experience
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Artificial Intelligence Projects
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Years Organizing WordCamps
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WordPress.org Badges
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WordPress Events Attended
2.0
First WordPress Version Used

Experience

Oct 2025 - Present

Full-Stack Engineer

WP-Stars · Full-time | Vienna, Austria (Remote)

Enterprise WordPress and WooCommerce development for Austrian and DACH-region clients. Full-stack engineering with PHP 8.2+, Elementor, ACF Pro, Mautic, Algolia, Redis, and CI/CD pipelines. Building scalable e-commerce solutions, marketing automation integrations, and search infrastructure.

Jun 2007 - Present

Full-Stack Web Developer | WordPress & LLM/AI Specialist

WPPoland · Freelance | Remote

Helping organisations deliver fast, scalable and AI-ready digital experiences. Combining WordPress/WooCommerce development with AI Agents and LLMO. Backend/Frontend development, Performance Optimization (Core Web Vitals), Structured Data automation, and AI Engine Optimization (AIEO).

Jan 2021 - Sep 2025

(WordPress | WooCommerce | PHP) Developer

Equiqo · Contract | Remote

Custom WordPress/WooCommerce development, performance refinement, loading time optimization, and structured data management. Integration with HubSpot and Shopify. Tech stack: Bedrock, Sage, Elementor, ACF, PHP, Python, Node.js.

Mar 2020 - Dec 2020

WordPress Developer

Itineris Ltd · Full-time | Ipswich, UK

Custom WordPress development using Sage/Bedrock, performance refinement, SEO optimization, and structured data management.

Nov 2019 - Feb 2020

WordPress Developer

what. AG · Freelance | Zurich, Switzerland

Custom WordPress development, loading time optimization, GTM/GSC integration.

Jun 2016 - Oct 2019

WordPress Developer | Team Pilot

AirHelp · Contract | Hybrid

Leading developer team, custom WordPress development, AMP implementation, performance optimization, and creating multilingual websites. Tech: Kibana, Grafana, AWS, Redis.

Jul 2007 - Oct 2015

Internet Marketing Specialist, WordPress Developer

VECTOR GROUP Co. | Gdynia, Poland

Mobile-friendly web development, B2B commerce, e-mail marketing campaigns, SEM/SEO optimization.

Feb 2005 - Jul 2007

Performance Marketing Specialist | Web Designer

Ósemka Internet Media | Olsztyn, Poland

Managing SEM campaigns for high-traffic portals (3.5M UU/mo), web analytics, and full-stack development for multiple national services.

Oct 2001 - Jun 2007

Event Manager & Web Developer

Andergrant.com | Olsztyn, Poland

Coordinating cultural events while managing web presence and graphic design projects.

Oct 1996 - Jun 2005

Freelance Web Developer

olshtyn.pl | Olsztyn, Poland

Early web development, HTML websites, Photoshop to HTML conversions, and email campaigns.

Volunteering & Community

Oct 2025 - Present

Event Organizer

CMSConf · Freelance

Organizing CMS Conference. Responsible for event planning, speaker coordination, and community engagement.

Sep 2024 - Present

Conference Organizer

WordCamp Europe

Budget Team Co-organizer. Responsible for financial planning and budget management for WordCamp Europe 2025 (Basel) and 2026 (Kraków).

Nov 2025 - Present

WordPress Credits Mentor

WordPress Foundation

Mentor in the global WordPress Credits programme. Supporting students and early contributors in open-source development. One of the first mentors representing Poland (announced at WordCamp Wrocław 2025).

Jan 2015 - Present

Conference Organizer

WordCamp Gdynia

Lead Organizer. Coordinating venue, speakers, sponsors, and overall event logistics.

Sep 2016 - Present

Event Co-organizer

WordCamp Polska

Co-organizing national WordPress conferences and local meetups.

Jan 2018 - Present

Meetup Organizer

WordUp Trójmiasto (Gdynia)

Lead organizer of WordPress community meetups in the Tricity area (Gdynia–Gdańsk–Sopot). 24+ editions since 2018, bringing together developers, designers, and business owners.

2026 - Present

Meetup Organizer

WordUp Olsztyn

Founding organizer of WordPress meetups in Olsztyn. Launching the first edition in 2026 to build a local WordPress community in the Warmia-Masuria region.

Education

2009 - 2010

SGH Warsaw School of Economics

Postgraduate Diploma, Internet Marketing
1998 - 2003

University of Warmia and Mazury in Olsztyn

BS, Quality Controlling
Recommendations from LinkedIn

Recommendations and reviews of working with WPPoland

Selected recommendations from WordPress, WordCamp and e-commerce leaders - with a focus on delivery on time, technical depth, and a business-driven approach to WordPress development.

Karolina Czapla

Karolina Czapla

Marketing Strategist – Performance & Digital Strategy

“Working with Mariusz on WordCamp has shown me how rare it is to combine deep technical skill with genuine leadership. He plans, coordinates and delivers with precision, while giving the team space to grow and contribute....”

Co‑organiser, WordCamp Gdynia 2024 & 2025

Argert Boja

Argert Boja

Senior Full‑Stack Developer

“Mariusz is the teammate everyone hopes for: strong full‑stack WordPress skills, clear explanations and a positive attitude even under pressure. He moves easily between custom plugins, performance work and Gutenberg layou...”

Worked alongside Mariusz on WordPress projects

Daniel Blossfeld

Daniel Blossfeld

Process Optimization & Digitalization Consultant

“I had the pleasure of working with Mariusz for almost three years. During that time, his WordPress development skills proved invaluable across a range of projects, from website builds to online member areas and even Shop...”

Mariusz was his client for WordPress work

Jessica Di Pasquale

Jessica Di Pasquale

Leading SEO initiatives with data-driven growth strategies.

“Mariusz is a very skilled, patient and expert guy. Always ready to help and to fix errors, I really appreciated working with him. He is such a great colleague!”

Managed Mariusz directly

Belinda Koch

Belinda Koch

Web-Tracking Analyst at TUI

“Mariusz is a great person to work with. He is extremely motivated to learn new things and share his knowledge, and is very knowledgeable on a wide range of topics. We worked together on digital analytics and tracking top...”

Worked with Mariusz on digital analytics and tracking topics

Paweł Lewczuk

Paweł Lewczuk

Front-end developer, WordPress developer

“I collaborated with Mariusz on several projects and our cooperation was always exemplary. I believe there are many more joint projects ahead of us. Highly recommended!”

Mariusz was Paweł's client