- Check out the new Kotlin Coroutines & Concurrency course
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
Available Courses
Free! Scala at Light Speed
For the busy programmer: learn Scala's most important features in the time it takes to watch a movie
Scala 3 New Features
Discover Scala 3's new features without re-learning the language — a concise course designed for Scala 2 developers
Scala Essentials
Now with Scala 3 – become a Scala developer by mastering the essentials of Scala and functional programming with our comprehensive, hands-on course – also available for Scala 2
Scala & Functional Programming Interview Practice
Master data structures, algorithms, and the pure functional programming mindset with Scala to ace your Scala interview
Advanced Scala
Now with Scala 3 – become a Scala rockstar by mastering Scala and functional programming with our comprehensive, hands-on advanced course – also available for Scala 2
Free! Kotlin at Light Speed
For the busy programmer: learn Kotlin's most important features in the time it takes to watch a movie
New! Kotlin Essentials
Become a Kotlin developer by mastering the essentials of Kotlin with our comprehensive, hands-on course
New! Kotlin Coroutines & Concurrency
Master Kotlin coroutines and build massively parallel and concurrent applications with our hands-on course designed for pro Kotlin developers
New! Advanced Kotlin
Become a Kotlin rockstar by mastering Kotlin with our comprehensive, hands-on advanced course
ZIO
Unlock the potential of ZIO: master writing powerful applications with parallelism, concurrency, and pure functional programming
New! ZIO Rite of Passage
Build your own full-stack Scala application with ZIO: from credit card checkout to AI and emails, experience real-world development with our comprehensive course, and see the live app here
Cats
Master Scala and functional programming with the Cats library: Learn to write high-level, grounded code using one of the most popular libraries in the functional programming ecosystem
Cats Effect
Write composable, high-performance, purely functional applications and boost your productivity with Cats Effect, one of the most powerful libraries for Scala
New! Typelevel Rite of Passage
Build your own full-stack Scala application with Typelevel: working on credit card checkout and emails, experience real-world development with our comprehensive course, and see the live app here
Apache Flink with Scala
Stream big data like a pro using Apache Flink with Scala: Process millions of events in real time using one of the most powerful libraries and engines for stateful data streaming
Apache Spark Essentials with Scala
Become an Apache Spark developer by mastering the essentials of Apache Spark with Scala and big data with our comprehensive, hands-on course
Apache Spark Streaming with Scala
Master Apache Spark Streaming with Scala: process massive data as it arrives, integrate with Kafka, JDBC, Cassandra, and more – handle live data streams effortlessly
Apache Spark Optimization with Scala
Write performant code: master Apache Spark with Scala's tools and techniques to make your applications run blazing fast and learn the strategies used by top developers
Apache Spark Performance Tuning with Scala
Optimize Apache Spark with Scala for peak performance: master Spark internals and configurations to achieve maximum speed and memory efficiency for your cluster
Akka/Apache Pekko Essentials with Scala
Say goodbye to threads, locks, and headaches: meet the Actor Model and discover a smarter approach to concurrent and distributed coding — classic actors also available
Akka/Apache Pekko Streams with Scala
Harness the power of reactive streams using Akka/Apache Pekko Streams with Scala: learn to implement scalable, data-rich systems efficiently, writing in a few lines what takes others thousands to achieve
Akka/Apache Pekko HTTP with Scala
Build microservices in minutes using Akka/Apache Pekko HTTP with Scala: Develop stream-based REST APIs, backends, and microservices with ease, sending and receiving JSON effortlessly using a powerful server DSL
The Scala Bundle
Become a Scala and functional programming expert from scratch with our all-inclusive course bundle: master everything you need in one complete package, at a discount
The Kotlin Bundle
Become a Kotlin expert from scratch with our all-inclusive course bundle: master everything you need in one complete package, at a discount
The Apache Spark Bundle with Scala
Become a Apache Spark and big data expert from scratch with our all-inclusive course bundle: master everything you need using Scala in one complete package, at a discount
The Akka/Apache Pekko Bundle
Become a Akka/Apache Pekko and distributed JVM applications expert from scratch with our all-inclusive course bundle: master everything you need with Scala in one complete package, at a discount
The 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.
The Founder
Daniel CiocîrlanFounder | 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.
I've taught Scala, Kotlin, Akka, Spark and more in live trainings at some of the best companies in the world.
Testimonials
Need a course or training session?
Send me a message and let's talk about your needs.