About
Security-minded web developer with an engineering background
I am Mustafa Keleşoğlu, a web developer based in Dinslaken, North Rhine-Westphalia, Germany. I build websites and web applications that load fast, work on every device and are configured securely from the start.
My path into web development began with a completed degree in mechanical engineering. The German Central Office for Foreign Education (ZAB) evaluated the degree positively and rated it as comparable to a German bachelor’s degree. From that time I kept habits that help me every day: breaking problems down in a structured way, documenting decisions and checking results before calling them done.
I grew in practice through client projects with WordPress, Elementor and WooCommerce: company sites, a restaurant website with an ordering path, an association website. Add to that migrations, hosting and deployment, the unglamorous work that decides whether a site runs reliably.
Alongside client work I develop my own software with Node.js, Express and EJS: SaveFold as a full-stack product and AuthorityLab as a security research project. Security is not an extra here. I work with SOC, SIEM, log analysis and system security, and that knowledge goes into every application I build.
How I work
Clear communication
You learn early what is feasible, what it costs and where the risks are. In English, German or Turkish.
Honest about status
I describe projects as they are, including what is still in progress.
Built to be maintained
No special solutions only I understand. Your website should keep running without me.
Let's talk about your project
Describe briefly what you have in mind. I usually reply within a few working days, in English, German or Turkish.