Hi, I'm Borna.

Full-time work during studies, left to focus on academic obligations.

Worked on and led development on a number of complex and challenging Eightshift-based WordPress projects. Contributed to the open source Eightshift Development Kit, with a large contribution being WCAG 2.1 Level AA compliance. Helped write Infinum's Web Accessibility Handbook.

I gained a lot of experience in various disciplines and domains, including frontend accessibility, webpage performance, API integrations at scale, backend optimizations, payment and backoffice systems, crowdfunding, interactive content animations, build tools and deployment processes, GIS datasets and optimizations, WP multisite and horizontal scaling / general scalability.

Supremum was an online tutoring service developed by myself and a friend. I developed pricing strategies, marketing plans, a Laravel-based web app and infrastructure, including KEKS Pay integration.

We developed an industry-leading product in a short time, had a sizeable number of instructors, and got some traction, but unfortunately not enough to sustain further development that was required, especially as better opportunities arose.
Ultimately, we decided to shut down the service.

I cofounded Znanstvenik u meni ("The Scientist in Me") in 2018 along with Filip Matić, with Educateam providing a legal structure.

I did volunteer work as Project Director, consisting of general project management and organisation. Also volunteered in design, writing and software development.

I developed the website, a web app for signing up to the competition and a backend service for managing video uploads and transcoding videos.

From 2019 up to 2021, I volunteered as a Camp Organiser for S3++, a camp of the Summer School of Science, consisting of general project management, lecture and workshop organisation and web services management.

I am also an occassional writer for the Summer School of Science Blog.

I also volunteered in the organization of WISe 2019, participated in Design for Inclusion in Požega, and probably a few other projects I'm forgetting right now.

• Winter school of mathematics and computer science, 2014: “What is Linux?”
• DORS/CLUC 2014: “Primary school student using FLOSS” (yes, I was a kid at this time)
• Europe Code Week 2014: “Making websites in HTML”
• Winter school of mathematics and computer science, 2015: “HTML and CSS”
• Europe Code Week 2015: “An introduction to PHP”
• Pula Mathematics festival 2015: A mathematical walk through Slavonia, Dragana Blagojević, Ines Herceg, Marta Ivanko, Mario Borna Mjertan
• Winter school of mathematics and computer science 2016: “An introduction to digital photo editing”, Lovro Marković, Mario Borna Mjertan
• Winter school of mathematics and computer science 2017: “An introduction to web application security”
• Euromath MATHFactor 2017: “Making randomness: Pseudorandom number generators”
• Day and Night at PMF (“Dan i noć na PMF-u”) 2018: “Various proofs of the Pythagorean theorem”, Filip Matić, Mario Borna Mjertan
• Summer School of Science 2019: “Telling the future with mathematics: Probability and crime prediction”
• The Night of Mathematics (“Večer matematike”) 2019: “Clustered and Set”
• 14th WordPress Zagreb Meetup: "Web for everyone - Accessibility"

Feel free to invite me to speak or remind me that I've forgotten to list a few talks :)

Throughout working on various projects, I've got acquainted with quite a few tools, programming languages and infrastructure solutions.
I feel comfortable using any major OS, administrating Linux servers, and can fluently speak PHP, C(++), SQL, Python, JavaScript/TypeScript and Rust. As for human languages, the list includes Croatian as my native language, English and a bit of Slovak.

I've got experience with WordPress, Eightshift, Laravel, Alpine JS, React, Tailwind, Bootstrap, Guzzle, Redbean, Jetstream, Livewire, Spring and quite a few other frameworks and libraries. I've worked on integrations with KEKS Pay, Postmark, Twilio, Solo, Sentry, Bugsnag, Cloudflare, Algolia, Microsoft Dynamics, Buckaroo, HubSpot and more. I have experience with working on AWS, DigitalOcean and bare metal.

I also have experience with Git, GitHub, GitHub Actions, Azure DevOps, CircleCI, Semaphore, Jenkins, Buddy, JIRA, Bitbucket, Valeyard, Phabricator (so sad it's over), Office 365 administration, Google Workspace Administration and more.

The list of tools and tech I've worked with has grown significantly since my last update to this, and I think it's boring to have a huge list of everything I've worked with. I'm leaving the old list for reference above, but I've done a lot more work in much more stacks since.

My go-to choices for projects these days are Laravel for PHP backends, Actix and Tokio for Rust backends, React (Inertia optional) and Tailwind with shadcn for frontends. I like both MySQL and Postgres. Redis is a godsend. For big data, I love ClickHouse. My personal infra stack currently is bare metal plus Docker, with the Grafana monitoring stack and Sentry for error reporting.