cojaro.co
A photography portfolio website built with Next.js for Jaro Mikos.

2026
Mateusz Hallala
All rights reserved

I’m Matt, an Independent Web Developer.
I build digital experiences for brands, creatives, and growing businesses who want to stand out — combining cutting-edge technology, unique design and carefully crafted motion.
Taking projects from discovery to delivery, design to implementation and backend to frontend.
A photography portfolio website built with Next.js for Jaro Mikos.

“[The data portal] includes observations of methane and CO2 super-emitters across the globe. We detect, pinpoint and quantify emissions at a facility-scale and make this data available to the public, providing accessibility and transparency to maximize impact.”

Protecting Blue Corridors brings together 30 years of satellite tracking and scientific data to visualize key ocean habitats and migratory networks. This initiative supports global and regional conservation efforts, provides advice to mitigate threats, and highlights science-based solutions for policymakers.

Custom web development services for a wide range of projects, from simple websites to complex web applications.
Bring your own design or let's pick a designer together that fits your brand and vision.
Work with my recommended technology or....
Visually-driven web development services that require a unique blend of creativity and technical expertise.
Bespoke animation and storytelling with CSS, SVG, Motion and GSAP, Data Visualization with D3 and interactive maps with Mapbox or Maplibre and Deck.gl.
Expert advice and comprehensive reviews to help you make informed decisions about your web projects, from technical strategy to implementation, and ensure your existing projects are performing at their best.
Schedule a free discovery call to discuss your project, goals, and requirements.
After the discovery call, I will provide you with a proposal outlining the scope of work, timeline, and cost for your project.
If the proposal looks good to you, we can move forward with signing a contract and kicking off the project!