JetBrains Research

Does the choice of programming language affect how quickly developers deliver code? This article offers data-driven insights.

AI is reshaping how software is built, tested, and taught. In AI4SE, that transformation is engineered on purpose. In collaboration with researchers from TU Delft, AI4SE brings together leading labs, industry-grade tools, and five dedicated research tracks to turn advances in AI into practical gains for developers and learners worldwide.

Our Education Research team built an AI-powered hints that helps students understand errors and investigated how students actually use the tool.

Every year, thousands of developers take part in the JetBrains Developer Ecosystem Survey, helping us map the evolving landscape of software development worldwide. Published in eight languages with data from 20 geographical regions, the survey includes China – a fast-evolving market that shares…

In product development, assumptions about how people will use a tool don’t always align with the practical reality. Last spring, during a gathering of our Junie team, we set out to bridge that gap by trying something new. We ran two hands-on user workshops – one online and another in our Belgrade…

There is a significant gap in the research on efficiency-based context management. Our researchers have addressed this gap with an empirical study of the major approaches in efficiency-based context management, plus a novel hybrid approach that achieves significant cost reduction.

At JetBrains Research we built LitmusKt — a novel concurrency testing tool for Kotlin’s unique mix of JVM, Native, and JavaScript backends.

The world of computer science (CS) education is changing rapidly. From AI-powered tools to new modes of online and blended learning, it has never been more dynamic – or more critical. Education research has looked into some aspects of how students learn computer science, but when we ask the big questions about who is learning computer science, how, and why, there are surprisingly few big-picture studies out there. Our Education Research team with our Strategic Research and Market Intelligence and JetBrains Academy teams addressed this gap by surveying a diverse audience on a wide range of topics. The dataset is available online, and we encourage you to explore it yourself!

What’s the most popular programming language? Are devs happy about their jobs in 2025? Find out answers to these and many other questions in our latest Developer Ecosystem report.

What's the most popular CI/CD tool in 2025? How many companies use AI in their workflows? Find answers to these and other questions in this blog post, based on the latest JetBrains survey.

In our last post, we introduced our talented intern cohort from our AI4SE research partnership with TU Delft. In this post, we're excited to spotlight the next chapter in their journey: their evolution from interns to full-time members of our tech team. These individuals didn't just stand by and observe: they immersed themselves in real projects, tackling complex challenges with technologies at the core of our business.

Our Software Testing Research team recently collaborated with TU Delft to develop a research framework: TestSpark for improved test generation for Java programs.