--- tytul: "Mateusz Olszański, Team Leader Web Developer" opis: "Mateusz Olszański, Team Leader Web Developer at JustIdea. 9 articles on the blog. Topics: Web Development, Online stores. See what they write about and build" adres: https://justidea.agency/en/author/mateusz-olszanski/ serwis: "JustIdea Agency" jezyk: pl zrodlo: automatyczny odpowiednik strony HTML, generowany przy każdym buildzie --- ![Mateusz Olszański](https://justidea.agency/obrazy/mateuszo-98716864.webp) Blog author # Mateusz Olszański Team Leader Web Developer Leads the development team at JustIdea. On the blog he writes about e-commerce platforms from the implementation side: comparisons of PrestaShop with other store platforms, version upgrades and the real cost of building a store. 9 articles Development [LinkedIn](https://www.linkedin.com/in/mateusz-olsza%C5%84ski-b4a764178/) [JustIdea team](https://justidea.agency/en/about-us/) Body of work ## Articles by Mateusz Olszański [Web Development 3 February 2025 New from JustIdea: GPSR module for PrestaShop now available on Addons!](https://justidea.agency/en/blog/new-from-justidea-gpsr-module-for-prestashop-now-available-on-addons/)[Web Development 7 February 2024 How much does a PrestaShop online store cost?](https://justidea.agency/en/blog/how-much-does-a-prestashop-store-cost/)[Online stores 12 December 2023 PrestaShop 8 Upgrade: What You Need to Know](https://justidea.agency/en/blog/prestashop-8-upgrade-guide/)[Web Development 1 December 2023 PrestaShop vs WooCommerce - which should you choose for your online store?](https://justidea.agency/en/blog/prestashop-vs-woocommerce/)[Web Development 28 November 2023 How Much Does a WooCommerce Store Cost?](https://justidea.agency/en/blog/how-much-does-a-woocommerce-store-cost/)[Web Development 28 November 2023 PrestaShop Template: Ready-Made or Custom?](https://justidea.agency/en/blog/prestashop-template-ready-made-or-custom/)[Web Development 27 November 2023 How Much Does a Custom Online Store Cost?](https://justidea.agency/en/blog/how-much-does-a-custom-online-store-cost/)[Web Development 27 November 2023 PrestaShop vs Shoper: Key Considerations When Choosing an E-commerce Platform](https://justidea.agency/en/blog/prestashop-vs-shoper-which-platform-to-choose/)[Online stores 25 September 2023 PrestaShop 1.6 to 1.7 Upgrade: What to Remember](https://justidea.agency/en/blog/prestashop-1-6-to-1-7-upgrade/) There is a company behind this byline ## Mateusz Olszański writes about the work they do on client projects The ratings below cover the whole agency, not a single author. Clients gave them on Google, Facebook and Clutch. 4.96 / 5 weighted average of 224 reviews across three platforms [Read the reviews](https://justidea.agency/en/justidea-reviews/) [![Google](https://justidea.agency/assets/logo-google.svg) 4.97 / 5 156 reviews on our Google Business Profile](https://www.google.com/search?q=JustIdea+Agency+Krak%C3%B3w+opinie)[![Facebook](https://justidea.agency/assets/logo-facebook.svg) 5.0 / 5 33 reviews on our Facebook page](https://www.facebook.com/justidea.agency/reviews)[![Clutch](https://justidea.agency/assets/logo-clutch.svg) 4.9 / 5 35 B2B reviews, each verified in a call with the client](https://clutch.co/profile/justidea-agency) Statuses awarded by the platforms: PrestaShop Expert ★★★, Google Premier Partner 2025, Meta Business Partner, Microsoft Advertising Elite Partner 2025. [All certificates and awards](https://justidea.agency/en/our-awards/) What they write about ## Topics [Web Development16](https://justidea.agency/en/category/web-development/)[Online stores2](https://justidea.agency/en/category/online-stores/) Contact ## A conversation about your numbers: 30 minutes The call is led by a new business specialist. When we get into the details of an account, the specialist for that channel joins in. We reply within one business day. A quick review of your tracking and campaignsThree priorities for the next quarterA written summary that stays with you Before the meeting we review your website, your visibility and what your campaigns show from the outside. We will not open with “so, what does your company do?”. [4.96 224 reviews](https://justidea.agency/en/justidea-reviews/) What happens after you send it 01 within 1 business day ### We reply to your email The reply comes from the same new business specialist who will run the call. No qualification form and no call from an unknown number. 02 this week ### A 30-minute conversation We go through your numbers and your questions. If it turns out we are not the right fit, we will tell you straight away.