About CaliberTek
CaliberTek is an education website for people learning technology. We publish step-by-step tutorials and structured learning paths across programming, software testing, AI and machine learning, cloud computing, DevOps, and cybersecurity, along with interview questions and certification guides.
What we try to do
- Teach in order. Our learning paths take you from the first lesson to the last, so you are not left piecing together random articles.
- Show working examples. Lessons include code and commands you can run, and security lessons stay defensive and use practice labs only.
- Point to official sources. For fast-changing topics such as cloud services and certification exams, we base our guides on vendor documentation and tell you to confirm details such as fees and exam versions on the official site.
- Be honest about uncertainty. When we could not verify a detail from an official source, we say so instead of guessing.
What you can do here
- Follow a course and track your progress. Create a free account, mark lessons complete, and see how far you are in each learning path.
- Earn a certificate of completion. Finish every lesson in a path to get a certificate with your name, the course, and the date, which you can share on LinkedIn or elsewhere.
- Practice for interviews. Work through question sets for Java, JavaScript, TypeScript, Python, SQL, React, Spring Boot, Selenium, Playwright, and system design.
- Keep what you need. Save lessons to your own named lists, like them, and ask questions in the comments.
- Look things up fast. Cheat sheets cover languages, test tools, and AI frameworks.
Is it free?
Yes. Reading every lesson, following a course, using the interview questions, and earning certificates of completion are all free, with no paid tier. The site is supported by advertising. Prices for any outside product we review are described in that review and come from the vendor.
Who writes the content
CaliberTek is edited by Dev Kilaru, a senior data analyst, cloud data engineer, and test automation specialist. Dev is responsible for what is published, and the topics that get the most depth on the site, data engineering and test automation, reflect his professional background. Read his full profile.
We research official documentation and exam guides, and we use AI tools to help draft and organize material. A draft is checked against its sources before it is published, and we update pages when exams, tools, or best practices change. The editorial policy explains the process in detail.
Found a mistake?
Technology moves quickly, and we want our pages to be right. Please contact us with the page address and the correction, and we will review it.
Browse the site
Start with the learning paths, explore a certification guide, or use the search to find a topic.