I am Sara,
a software developer
based
in .
About Me
My name is Sara Kozińska. I was born on 21.10.1987 in Warsaw, Poland. Currently I live in sunny Barcelona, with my stubborn french bulldog Lilo.
In my free time, i explore world of bio-hacking, good mistery books, original movies and live music!
Expertise
With over 15 years in development, I specialize in creating custom WordPress solutions, from themes and Gutenberg blocks to scalable, high-performance multi-sites. Equally, I thrive in web app development, leveraging tools like React, Vue, and Firebase to deliver modern, efficient applications.
Whether it’s building a seamless WordPress experience or tackling a complex web app, I bring passion, precision, and proven expertise to every project. Let’s create something amazing!
Some of my previous projects
Edu4eco.pl www.Edu4eco.pl
Tech stack: WordPress (ACF PRO based Gutenberg blocks), PHP, JavaScript, GSAP
Built a custom WordPress theme with dedicated and dynamic Gutenberg blocks, optimizing site usability and accessibility. Achieved high translation readiness and responsive design. Created pixel-perfect frontend layer.
Arkansas Corporate Suites www.arkansascorporatesuites.com
Tech stack: WordPress (ACF PRO based Gutenberg blocks), PHP, JavaScript, GSAP, Tailwind CSS
Built a WordPress theme with dedicated Gutenberg blocks, custom post types and listing templates for property managing company. Enhanced site scalability, performance and easy system to managing properties availability.
Community Trust Index www.trust.communityengagementhub.org
Tech stack: WordPress (ACF PRO based Gutenberg blocks), PHP, JavaScript, GSAP, REST API
Created a custom WordPress theme integrating interactive data visualizations, enabling dynamic updates from Excel sheets to maps and statistics.
Starapple.ai www.starapple.ai
Tech stack: WordPress (ACF PRO based Gutenberg blocks), PHP, JavaScript, GSAP
Developed a fully custom WordPress theme with dedicated Gutenberg blocks for seamless content management. Ensured performance optimization and complete translation readiness.
VILO CRM
Tech stack: Firebase (backend), Vue.js + Bootstrap (frontend), Node.js
Built a CRM web app tailored for a law office. This project included features like inter- office chat, meeting calendar, user profiles, case management (Kanban task board, document management, signature workflows), and more.
The TEFL Academy www.theteflacademy.com
Tech stack: WordPress (ACF PRO based Gutenberg blocks), PHP, JavaScript, REST API
Led the development of a WordPress-based multisite platform featuring custom components, e-commerce integration, and geolocation functionality. Enhanced site scalability, performance and 3rd party API integration.
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.