Rock the JVM Rock the JVM
ArticlesCoursesVideosAboutLog in →
  • Check out the new Scala Macros and Metaprogramming course
    Rock the JVM

    ROCK THE JVM

    The zero-to-master online courses and hands-on training for Scala, Kotlin, Apache Spark, Apache Flink, ZIO, Akka/Apache Pekko and more.

    No more mindless browsing, obscure blog posts and blurry videos. Save yourself the time and frustration and follow a smooth learning curve where code is king.

  • Latest Content

    articles thumbnail

    Latest Articles

    • Scala 3: The Evolution of a Macro

    • Deploying a Scala Application on Kubernetes

    • Guide to Scala 3 Macros

    • Scala 3 Inlines Explained

    • Project Loom: Structured Concurrency in Java

    • How to Build a ZIO Full-Stack Web Application

    videos thumbnail

    Latest Videos

    • Paul Snively on Programming Languages, Reliable Code and Good Taste in Software Engineering

    • James Ward on "making illegal states unrepresentable" in #programming #softwareengineering

    • How Functional Programming Helps us Write Better Code More Easily

    • James Ward on Effect Oriented Programming, Writing Code in the Age of AI, Curiosity and Exploration

    • How Scala makes you a better programmer

    • Martin Odersky on the Future of Scala, Learning, Teaching and the Quest for the Perfect Language

  • Available Courses

  • The Membership

    Personal membership

    Now also for teams!

    All of Rock the JVM, at your service. Access ~250 hours of the best content you'll ever find, write more code than many write in their careers, and be welcome in a community of driven people like you.

    Learn more
  • The Founder

    Daniel Ciocîrlan
    Daniel Ciocîrlan

    Founder | Rock the JVM

    Software engineer and best-selling instructor. I'm an avid fan of Scala, Kotlin, functional programming, big data and streaming. As of May 2023, I've taught more than 80000 people all over the world.

    • Website
    • Facebook
    • GitHub
    • LinkedIn
    • Twitter
    • YouTube

    I've taught Scala, Kotlin, Akka, Spark and more in live trainings at some of the best companies in the world.

  • Testimonials

    Adobe

    My team is expanding the use of Akka in our products so I needed a quick introduction on this topic. I have tried a couple of courses but the introduction to Akka was always too abrupt, too hard to comprehend. I blamed Akka for this as being too hard to explain. This was until I was exposed to the Rock The JVM courses which were an absolute delight when it comes to presenting such complex topics in such an easy to understand way. And Daniel has not stopped at Akka but has added to his portfolio amazing courses on Scala and Spark too. It seems like he is quite enjoying taking such challenges like complex technologies and making them so simple for everyone. I have instantly recommended Daniel’s work to my team, which helped them immensely with taking their skills to a new level, and I do recommend these courses to anyone who wants to have the fastest ramp-up in these tough but popular technologies.

    Mihai Fecioru
    Mihai Fecioru
    Engineering Manager at Adobe
    (San Francisco Bay Area, California)
    Ververica

    From Scala, to Akka, to Spark, Daniel delivers exceptional material in each and every one of these technologies. I’ve been using them for a long time and there is always something new I will discover from him. The level of detail he gets into as well as the way he delivers material is mindblowing. I personally find his latest course Spark Optimization pure gold and one of a kind. I’ve been using Spark for a year now and I haven’t even thought how much you can leverage query plans to make such optimizations. I can’t stop thinking every time, how he manages to go so deep - because using a technology is one thing, but knowing its internals so well and how everything works behind the scenes is another story when it comes to distributed systems. Long story short Daniel is definitely the best instructor I’ve come across and each one of his courses is the best resource you can find online. Kudos for all your work and knowledge sharing.

    Giannis Polyzos
    Giannis Polyzos
    Senior Engineer at Ververica
    (Athens, Greece)
    Apple

    Daniel’s courses on Scala and Big Data are the best in class. I’ve been in touch with Daniel’s teaching and courses since early 2018. The first course that I took from him was Scala & Functional Programming; I was skeptical about it because over the internet there are many courses you can find, but few really worthy. I remember the very first day when Daniel started to speak and shared his examples - I started to love Scala, and then more as we went on. I am with Scala for the last 5 years now, but never ever has anyone explained to me or gave me comparable resources to Rock the JVM. Daniel gave me a shift in life and helped me crack top tech company interviews. His courses on big data are a must for any aspiring big data developer or data enthusiast. I highly recommend Daniel as an educator both online and on campus.

    Anirban Goswami
    Anirban Goswami
    Data Engineer at Apple
    (Cupertino, California)
  • Need a course or training session?

    Send me a message and let's talk about your needs.

    By selecting this, you agree to our privacy policy.

This site uses cookies. Check our cookie policy (TLDR: no personal information is stored). For more information see our cookie policy.

Footer

Subscribe to our newsletter!

This site is built on trust, and your data is safe. Check out the privacy policy .

Thank you for subscribing! Check your email for confirmation.

Content

  • Articles
  • Courses
  • Videos

Support

  • Contact
  • Memberships

Company

  • About

Policies

  • Cookie
  • Privacy
  • Refund
  • Terms
  • Trademark
  • Facebook
  • GitHub
  • LinkedIn
  • Twitter
  • YouTube
  • RSS

© 2017–2025 Accelerated Learning System SRL