I am Sara,
a web developer
based
in .

About Me
Whoever you are, your presence here means that I may have (or be) something you are looking for. But before we get down to business, let me introduce myself.
My name is Sara Kozińska. I was born on 21.10.1987 in Warsaw, Poland. Currently I live in sunny Barcelona, Spain, where I live with my stubborn (but still cute) French bulldog Lilo.
Since I can remember I have 3 passions: animals, boards (skateboard, snowboard, wakeboard, surfing...) and computers. To this day they are all part of my life. Over time, other interesting things were added, such as cooking (Mexican and Asian cuisine), drumming, music, filmmaking, traveling and self-development (spiritual development).
Expertise
I have 15+ years of experience in code development industry!!!
Yes, I have been speaking with computers for over 15 years! That's over 500,000 hours of work, and I dare your company to use it as a leverage in your business!
I started programming in high school with Action Script (Macromedia Flash) and basic HTML / CSS. From there I dived into the world of content management systems such as Joomla, PrestaShop, Magento, Drupal, and Shopify which led to my specialization in WordPress development (WordPress powers 65.2% of all websites using any content management system).
Working with such a wide range of clients and tools has given me the opportunity to learn the most modern programming languages and libraries.
Considering myself as a WordPress developer I've worked with the most popular Page Builders / Themes (Avada, Divi, Elementor...), and quite a large amount of well-known WP plugins, so I have the ability to detect the most common issues/bugs and fix them in a very quick time. Coding custom themes, I was often creating (on the base of ACF PRO's Flexible Content field) custom page builders, tailoring them to client needs and experience. Now my switch is definitely to creating custom Gutenberg blocks.
My strongest skill is in custom code and optimization. I create new themes, plugins, and blocks from scratch, and I am always looking for the most efficient, modern solutions for my projects.
I am most enthusiastic at the moment about:
- WordPress Development: Gutenberg, Fullsite editing, headless WP (REACT, VUE, TypeScript, Faust.js);
- Jamstack: [REACT / VUE.js / TypeScript / ...] + [Sanity.io / Prismic / Netlify / ...];
- GSAP (GreenSock), ANIME.JS
- work with AI solutions, creating AI solutions,
- Node.js (learning).
I'm not asking you to take my word for it; I challenge you to take my references into account, or even better, let me prove myself in practice!
Portfolio
Here are some of my latest works. Feel free to check them out.
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WordPress based project.Welcom Design & Remodeling
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WordPress based project.Czarny Deszcz
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WordPress + WooCommerce based project.Mała Czarna Coffee
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Jamstack (REACT + WordPress) based project.RVOFond
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WordPress + WooCommerce based project.The TEFL Academy
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WordPress based project.Integrated Mobile Marketing

Welcom Design & Remodeling
Welcom Design & Remodeling has been transforming homes since year 2000, and have successfully completed thousands of projects!
I meticulously designed and developed a WordPress theme, introducing WP Full Site Editing capabilities. With a blend of default and custom Gutenberg blocks, this page builder offers a seamless and personalized site-building experience. Every detail, crafted from scratch, reflects a unique touch.
- WordPress:
- PHP
- Vanilla JS / TypeScript
- REACT
- Gutenberg Blocks
- Full Site Editing
- Fancybox
- GSAP
- CSS/SCSS

Czarny Deszcz
Courses designed to enhance your coffee-making skills at home, master the art of specialty barista techniques, or even prepare for high-profile barista events.
Czarny Deszcz's website is created based on a custom design provided by the client. With the power of the Advanced Custom Fields Pro plugin, I handcrafted a unique page builder using the Flexible Content field - it allows the backend users to literally edit any part of this website.
- WordPress:
- PHP
- Vanilla JS
- CSS
- Advanced Custom Fields
- Swiper
- GLightbox

Mała Czarna Coffee
Local Coffee Roasters.
Mała Czarna's website is created based on a custom design provided by the client (alike as czarnydeszcz.pl), but with custom and stylish e-commerce coffee shop. All was done with touch of custom page builder based on ACF PRO Flexible Content.
- WordPress:
- PHP
- Vanilla JS
- CSS
- Advanced Custom Fields
- WooCommerce
- Swiper
- GLightbox

RVOFond
RVOfond is regional safety representatives (regionale verneombud - RVO) in the accommodation, food service and cleaning industries.
I was hired by increo.no to implement new design onto existing Jamstack (WordPress + REACT).
- Jamstack:
- WordPress
- REACT
- PHP
- jQuery/JS
- CSS/SCSS
- Advanced Custom Fields
- Custom Post Types

The TEFL Academy
The TEFL Academy is the world’s most awarded TEFL course provider.
This
website based on custom theme written by me from scratch. It's a multisite, with geolocalisation, many
custom post types and many features based on theme functionality. Website also have many page
templates with customised page builders (ACF), so content editors have full flexibility to build
almost any page they want to.
- WordPress Multisite:
- PHP
- jQuery/JS
- CSS/SCSS
- WooCommerce
- Advanced Custom Fields
- Jobs Board
- Swiper

Integrated Mobile Marketing
Integrated Mobile Marketing is your interactive digital marketing company specializing in Website Design with a Digital Marketing focus.
Architected from the ground up, I've engineered a WordPress theme that seamlessly integrates with ACF Pro's Flexible Content blocks. Leveraging Bootstrap's robust grid system, this theme is not just about aesthetics — it's optimized, responsive, and user-friendly.
- WordPress:
- PHP
- jQuery/JS
- CSS/SCSS
- Advanced Custom Fields (Page Builder)
- Bootstrap
Education
Warsaw School of Computer Science
Information Technology
October 2007 - June 2011
High School
Class Profile: Math, Physic, Information Technology
October 2004 - June 2007
Career
Ixtrim Sara Kozińska, Freelance Web Developer
Full Stack WebDeveloper
August 2019 - Present • Barcelona, Spain • Remotely, Worldwide
Working as freelance developer full time (remotely) or per project. I was working with companies such as Integrated Mobile Marketing (United States), Mobile5 (UK), The TEFL Academy (UK), and who knows... maybe yours?
netzstrategen GmbH
Full Stack WebDeveloper
October 2017 - July 2018 • Barcelona, Spain
Working as part of the company's web developers team in the Barcelona office.
Ixtrim Sara Kozińska, Freelance Web Developer
Web Developer
January 2007 - September 2017 • Warsaw, Poland
Working as a freelance developer full time. Cooperation with many companies all over the world - directly with end-client or as an outsource for bigger agencies (such as American Eagle, Hypermedia Isobar, Sparrow Design and many more).
FAMA PR Agency
Web Developer
April 2009 - October 2010 • Warsaw, Poland
Full-stack web developer in a marketing agency. I was creating interactive and animated websites using Flash / Action Script, Joomla and WordPress.
Film and Art Festival TWO RIVERSIDES
Web Developer
May 2007 - September 2011 • Kazimierz Dolny, Poland
Creation of festival website and content management. The whole project was based on CMS Joomla and created by me from scratch. Annually, we were changing the whole template and added new functionalities to the website as the festival was growing.
Let's Get In Touch
I'd really love to hear from you! Whether you have a question, quote or just want to chat about code — shoot me a message.