Tomasz Zieliński, Author At Osom Studio - WooCommerce & WordPress Development Agency Of Choice
Tomasz Zieliński

Tomasz Zieliński

CTO

Tomasz is the CTO and co-founder of Osom Studio. He started his professional career in mobile app development but found his true calling when he co-founded the company over a decade ago and shifted his focus to WordPress. As CTO, Tomasz is responsible for the technical direction of the projects he oversees — from code quality and architecture to keeping up with industry standards and best practices. He focuses on building solutions that are not only reliable and scalable but also clean, maintainable, and built to last. While technology plays a central role in his professional life, Tomasz values time spent offline just as much. Outside of work, he enjoys hiking mountain trails and getting lost in a good book, using the quiet time to recharge and gain fresh perspective.

Posts by Tomasz Zieliński:

Switch Themes Without Switching Context: Meet the Multi Theme Switcher Plugin for WordPress

Switch Themes Without Switching Context: Meet the Multi Theme Switcher Plugin for WordPress

Switch Themes Without Switching Context: Meet the Multi Theme Switcher Plugin for WordPress By Tomasz Zieliński As a website owner, you eventually face the same frustrating dilemma: you want to redesign part of your site, launch a campaign-specific landing page, test a new visual direction, or separate your online store from your corporate pages – but changing your WordPress theme means changing it everywhere. A global theme switch can disrupt your brand consistency, break layouts, affect performance, and create unnecessary risk for pages that are already working well. You do not want to rebuild your entire website just to experiment, optimize conversions, or gradually roll out a new design. That is exactly where Osom Multi Theme Switcher comes in. This plugin allows you to run multiple WordPress themes within a single installation and assign them only where needed – to specific pages, posts, categories,… ...

By Tomasz Zieliński

How to Run Safe WordPress Deployments – Our QA Workflow

How to Run Safe WordPress Deployments – Our QA Workflow

A practical inside look at a safe WordPress deployment workflow: code review, staging QA, controlled release and post-production verification. ...

By Tomasz Zieliński

The Big Move: Successfully Migrating Complex Data to WordPress & WooCommerce

The Big Move: Successfully Migrating Complex Data to WordPress & WooCommerce

Learn how to transfer intricate manufacturing catalogs without compromising site performance, or data integrity - your step-by-step migration roadmap. ...

By Tomasz Zieliński

Improving TTFB in WordPress (Pt. 2): Front-End and CDN Optimizations

Improving TTFB in WordPress (Pt. 2): Front-End and CDN Optimizations

TTFB (Time to First Byte) measures the delay before a page starts loading. Discover how optimizing servers, networks, and caching can speed up your site - and why front-end strategies matter just as much. ...

By Tomasz Zieliński

Improving TTFB in WordPress (Pt. 1): Backend and Server-Side Optimizations

Improving TTFB in WordPress (Pt. 1): Backend and Server-Side Optimizations

TTFB starts at the server. Backend factors like PHP execution, database queries, and server setup heavily impact how fast your site delivers content. Explore this guide to WordPress server optimizations ...

By Tomasz Zieliński

Migration from Joomla to WordPress part 3 –  Advanced user role tactics, modules & a smooth go-live

Migration from Joomla to WordPress part 3 – Advanced user role tactics, modules & a smooth go-live

Migration to WordPress offers a simpler setup and a rich plugin ecosystem, making it easier to manage content, users, and roles. This guide walks you through moving Joomla modules, components, and ensuring a smooth transition. ...

By Tomasz Zieliński

Migration from Joomla to WordPress part 2 –  Best Practices for Automated & Manual Data Transfers

Migration from Joomla to WordPress part 2 – Best Practices for Automated & Manual Data Transfers

Migration to WordPress can be approached in multiple ways - from automated tools like FG Joomla to WordPress to manual imports via CSV/XML. Learn how to handle media, images, and SEO to ensure a smooth, complete migration. ...

By Tomasz Zieliński

Migration from Joomla to WordPress part 1 – Planning and Environment Setup

Migration from Joomla to WordPress part 1 – Planning and Environment Setup

Migration to WordPress makes managing content and scaling your site easier. This guide provides a step-by-step roadmap for development teams to migrate medium-to-large Joomla sites into WordPress. ...

By Tomasz Zieliński

Enhancing Cybersecurity: Strategies for WordPress Users

Enhancing Cybersecurity: Strategies for WordPress Users

Enhancing Cybersecurity: Strategies for WordPress Users By Tomasz Zieliński In an era where cybersecurity threats are becoming increasingly sophisticated, understanding the nuances of security, especially for WordPress users, is essential. This blog post explores the various aspects of cybersecurity, focusing on the critical role of Open Source Intelligence (OSINT) and practical strategies to bolster your website’s security posture. Table of ContentsIntroduction to Cybersecurity ImportanceKey Reasons to Prioritise CybersecurityUnderstanding the Role of Developers in SecurityIncorporating Security into Development PracticesThe Intersection of Security and DevelopmentFinding the Right BalanceBalancing Security with FunctionalityStrategies for Balancing Security and Functionality:Real-World Examples of Security ChallengesPhysical Penetration Testing: What You Need to KnowKey Components of Physical Penetration TestingCreating Secure Access PointsBest Practices for Securing Access PointsImplementing Strong Password PoliciesStrong password policies should include the following elementsThe Importance of Reviewing Logs… ...

By Tomasz Zieliński