Mati Krawczyk

Artist and
Software Engineer

Code, creativity, and a drive to push limits.

Featured Projects

Projects I've built end-to-end: design, code, launch.

Escape 9–5
Escape 9–5Mobile App

Designed and built a mobile execution system that helps aspiring founders capture real problems, validate app ideas across eight product factors, follow an AI-assisted build playbook, and protect momentum through a 30-day coding and discipline journey.

FlutterRiverpodDriftRevenueCat
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Guardians of the Kingdom TD
Guardians of the Kingdom TDMobile Game

Designed, developed, and released a cross-platform mobile tower defense game on iOS and Android. Features include handcrafted levels, randomized challenges, progression systems, and integrated in-app purchases, delivering both strategic depth for players and experience in end-to-end mobile game development.

UnityC#
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Ares: Gym Tracker
Ares: Gym TrackerMobile App

Developed and launched a feature-rich, offline-first gym tracking application. Features include a clean daily workout logger with RPE, a haptic rest timer with customizable effects, progress tracking with e1RM and volume charts, achievements, and timezone-aware reminders with Supportive, Coach, or Roast tones.

FlutterRiverpodSQLite
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JK Cats
JK CatsBusiness Website

Created and launched the JK Cats website for an UK based British Shorthair cattery, featuring dynamic scroll sections for news and litters, individual cat profile pages with immersive galleries, shop functionality, and a contact form - all designed to be visually engaging and intuitively navigable across devices.

HTMLCSSJavaScript
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Calculators
CalculatorsWeb app

Built a with five purpose-built calculators: fuel trip costs, road journey time savings, loan payments, mortgages, and DIY cat-tree sisal. Each calculator keeps its own visual identity and state inside one fast workspace.

Next.jsTypeScriptInteractive Tools
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Photography Portfolio Website
Photography Portfolio WebsitePhotography Portfolio

Developed a high-performance photography portfolio using Next.js with custom image optimization. Instead of relying on Next.js Image component that processes images server-side, I created a custom Sharp-based optimization script that pre-processes images into multiple formats (WebP/AVIF) and sizes (400w-2800w), eliminating server load and ensuring instant image delivery. Features responsive picture elements with art direction, smooth AOS animations, and cinematic hero sections optimized for both mobile and desktop viewing.

Next.jsTypeScriptSharpCSS
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Nikon Price Tracker
Nikon Price TrackerDaily Price Watch

Built an automated Nikon gear tracker with daily snapshots, price and stock change detection, and email notifications for important updates. Includes a dedicated dashboard to manage tracked products and explore interactive historical charts per item.

Next.jsTypeScriptUpstash RedisResend
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