- Check out the new Scala Macros and Metaprogramming 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
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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
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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
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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
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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
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Free! Scala at Light Speed
For the busy programmer: learn Scala's most important features in the time it takes to watch a movie
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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
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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
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Scala Macros and Metaprogramming
Become a Scala wizard. Learn how to manipulate Scala code at compile time (with Scala!) and write powerful code and tools that other developers only dream about
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Scala & Functional Programming Interview Practice
Master data structures, algorithms, and the pure functional programming mindset with Scala to ace your Scala interview
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Scala 3 New Features
Discover Scala 3's new features without re-learning the language — a concise course designed for Scala 2 developers
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Free! Kotlin at Light Speed
For the busy programmer: learn Kotlin's most important features in the time it takes to watch a movie
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New! Kotlin Essentials
Become a Kotlin developer by mastering the essentials of Kotlin with our comprehensive, hands-on course
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New! Kotlin Coroutines & Concurrency
Master Kotlin coroutines and build massively parallel and concurrent applications with our hands-on course designed for pro Kotlin developers
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New! Advanced Kotlin
Become a Kotlin rockstar by mastering Kotlin with our comprehensive, hands-on advanced course
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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
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Cats Effect
Write composable, high-performance, purely functional applications and boost your productivity with Cats Effect, one of the most powerful libraries for Scala
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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
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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
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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
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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
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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
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ZIO
Unlock the potential of ZIO: master writing powerful applications with parallelism, concurrency, and pure functional programming
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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
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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
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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
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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
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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
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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
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.
Data Engineer at Apple(Cupertino, California)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.
Senior Engineer at Ververica(Athens, Greece)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.
Engineering Manager at Adobe(San Francisco Bay Area, California)Need a course or training session?
Send me a message and let's talk about your needs.
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