Hi! đź‘‹,
I'm Jonatan Kruszewski

Web Developer

I specialize in building scalable, maintainable front-end solutions that work seamlessly—without the tech debt nightmare.

Get In Touch
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StackOverflow reputation

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Certifications

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Publications

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Years of Experience

About Me đź‘‹

Hi! I'm Jonatan—a senior front-end developer who loves building things that actually work and don't break the moment you look away.

My Expertise ⚛️

I specialize in React, Redux, TypeScript, and scalable architectures, making sure everything runs smoothly and stays maintainable.

Experience 🏗️

I've worked on large-scale applications, mentored developers, and helped teams clean up messy codebases. I write clean, efficient code that keeps projects scalable instead of turning into tech debt.

Community & Writing ✍️

I contribute to Stack Overflow, write about development, and stay updated with the latest in tech.

Communication is key 🤝

If you need someone who can get things done, solve real problems, and improve your codebase, let's connect!

Latest Publications

Sharing knowledge through technical articles on Medium

Certifications

Validated expertise across multiple platforms and technologies

Why Hire a Certified Developer?

Anyone can write code, but not everyone writes scalable, maintainable, and high-quality code.

Certifications go beyond badges; they're proof that an external authority has reviewed, tested, and validated both knowledge and skills.

When you hire a certified developer, you're not just trusting what they say — you're trusting what they've proven.

Let's Connect

Have a project in mind? Let's talk about how I can help.

Get in touch

I'm open to new projects and collaborations. If you're looking for a developer or have a relevant opportunity, please feel free to reach out. I'll get back to you as soon as possible.

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