Programming languages most in demand in 2025, according to Pasiona

Programming languages evolve at the pace of technology, and every year some become consolidated while others emerge with force. From our Talent department at Pasiona, we have analysed the data for 2025 to identify the languages most in demand by large corporations and strategic projects in banking, insurance and traveltech.

This article is not a generic ranking: it reflects what our clients are really asking for and, therefore, what can make a difference in your career if you are a developer looking for new opportunities.

JavaScript and TypeScript: the heart of digital development

In 2025, JavaScript is still the undisputed king of the frontend, and TypeScript has become the norm in serious projects looking for scalability and robustness.

Frameworks such as

React


and Angular dominate the environments of large corporations, especially in digital banking and traveltech, where user experience is critical. At Pasiona, we observe that this language is not only in demand for building interfaces, but also in Full Stack roles combined with Node.js.

For those looking to excel, learning TypeScript is no longer optional: it’s the guarantee of working on large, complex projects.

Node.js: consolidating the agile backend

The Node.js ecosystem is no longer exclusive to startups. Today it is a mature option for business projects that need fast, scalable and highly integrated applications.

Our customers use it in banking integration projects, insurance APIs and travel platforms, where speed of response and the ability to handle thousands of requests per second are essential.

Node.js is the piece that completes the Full Stack profile, and its mastery opens the door to high-impact projects in international corporations.

Python: the language of artificial intelligence and automation

If there is one language that has grown unstoppably, it is

Python


. In 2025, its application goes far beyond scripting: it is the basis for AI, data science and machine learning projects.

At Pasiona, we see that large insurance companies and banks demand profiles that combine Python with libraries such as TensorFlow, PyTorch or Scikit-learn for fraud detection, risk scoring and predictive analytics projects.

In addition, Python also excels in process automation, workflow optimisation and software testing, making it a cross-cutting and increasingly indispensable language.

Java: resilience in critical environments

Far from being obsolete, Java remains one of the most robust languages for projects where resilience, security and scalability are vital.

Its application is especially strong in microservices architectures, which allow large corporations to develop robust and modular systems. In banking and insurance, Java remains the preferred choice for handling critical operations where there is no margin for error.

This language remains one of the pillars of IT talent most in demand at Pasiona.

Go and Rust: the next generation in cloud and high performance

Although they have not yet reached the level of adoption of JavaScript or Python,

Go


and
Rust
are gaining ground in high-demand projects.

• Go (Golang) stands out in cloud and microservices environments for its efficiency and simplicity.
• Rust is gaining prominence in applications where security and performance are priorities, such as critical infrastructure or low-level systems.

Our clients are already starting to request these profiles on an ad hoc basis, anticipating a trend that will grow in the coming years.

Conclusion

The analysis of our Talent department at Pasiona confirms that the programming languages most in demand in 2025 are those that balance technological maturity and the ability to adapt to new trends.

JavaScript/TypeScript, Node.js, Python and Java remain essential in corporate projects, while Go and Rust are emerging as strategic languages for the future.

If you want to stay competitive and grow in your career, now is the time to strengthen your mastery of these languages and look for projects where you can apply them. Check our
vacancies and find projects

where you can apply your favourite language.