Hi, my name is Oleksii Zeleniuk, and welcome to my website!

I’m a Freelance (full-stack) software developer based in Hamburg. Since 2009 I work as a software developer for various companies in Germany, Estonia, and Ukraine. I specialize in architecting and building web-based applications and taking care of infrastructure, test automation, and a little bit of frontend.

My current focus is on Java(Kotlin) development, but I also work with Node.js(Typescript) and Python. I like developing Infrastructure-as-Code in AWS with a “you build it, you own it” mentality. Whether using these or any other technologies, I am eager to apply Agile Principles to drive successful product development.

When I’m not coding, I enjoy participating in various sports such as football, jogging, and triathlon. I do speak Ukrainian, English, and German languages.

I write about my latest projects on my blog, where I share insights into my work and interests.

Thank you for visiting my website, and please feel free to contact me if you have any questions or would like to discuss a potential project!