Top 5 Programming Languages for Fintech Software Development

fintech app
Share via:

The financial sector globally is experiencing immense change due to its transition to digital space. Fintech software solutions henceforth have become an integral part of financial operations. They are pushing progress forward: next-gen banks, on-demand insurance, mobile banking app, digital wallets, and online banking are involved in the banking operations we use every day. 

  • Open banking that relies on safe banking data sharing via API between authorized organizations online in a more secure and standardized way; 
  • Biometrics in contactless solutions to ensure the security of mobile banking app development;
  • Digital wallets that connect online and offline payments in smooth transaction experiences;
  • RegTech to manage the immense volumes of standards, laws, and regulatory requirements;
  • AI chatbots and assistants in fintech software solutions to improve customer satisfaction via smart banking services;
  • Development of autonomous AI-driven finance solutions in order to help users effectively manage their money.

In case you are interested in the subject of fintech solutions, we have an entire article dedicated to the key features of fintech app development.

TOP 5 languages for fintech software development

How to create a mobile banking app, and which languages and frameworks do fintech software companies use? 

Important note: The security of an app for mobile banking isn’t so much dependent on the programming language itself but rather on the method of coding. So, in fact, any of the languages can be used for secure software.

Mobile banking application development involves multiple programming languages, and its usage depends primarily on the “mother” language the system has been using earlier.  

Here are some of the most frequently used languages developers use for bank software systems and app mobile banking.


JavaScript in the Financials sector is one of the burning topics in the fintech development community.   

Mobile banking app development would incorporate JS for multi-server and cross-platform apps running on Android and IOs.  

Yet, there has been a misguided claim that JS is not OK for mobile banking development and fintech because if you handle financial data by default, certain kinds of arithmetics are imprecise and unsafe. The solution is simple: don’t use the default behavior for handling numbers when using JavaScript. JavaScript has one of the largest package ecosystems with several well-written and well-tested libraries that perfectly work with currency, arbitrary precision, as well as number size. 

JavaScript is valued for enhanced UI and UX, open-source standards, high performance and security, convenient data visualization, and, as a result, speed of deployment. 

Check out how JavaScript is used for mobile banking apps in fintech software development from our practice: Fintech Application Development – Watstock in Case Studies


Javascript frameworks in fintech software development 

Some JS frameworks may be a perfect fit for your fintech development projects. 

AngularJS Highlights

AngularJS is good for creating single-page web apps, dynamic websites, and applications. Being an open-source framework, it comes with the MEAN stack and allows many code editors and integration of various tools and filters along with server-side rendering. 


Developed to handle the issues associated with Angular Framework, Vue.js is a demanded JavaScript library for creating web interfaces. When joined with other tools, it acts as a framework. Vue.js resolves an issue with memory consumption, has a vast integration scope, and supports server-side rendering. 

React Native advantages in terms of Fintech

React Native is a great option for fintech development due to its high speed and reliability and the possibility to cut costs by 30–40%. Cross-platform development enables devs to write code once and share it from 90% to 99% between both platforms.

Node.js for mobile banking apps

NodeJs is suitable for building fintech solutions as soon as it enables you to full-stack development with JavaScript. You can use it to develop large-scale apps that rely heavily on real-time data and stats but not apps that require heavy computation (due to its inability to process CPU-bound tasks). 

Despite this, large fintech companies are using Nodejs due to the speed, safety, functionality, privacy, and much more. 

For this purpose, PayPal has developed its own extension Krakenjs to the Express.js framework. also runs on Node.js. 

Java in fintech development 

Java developers build secure platforms for financial data; banking institutions generally use it as the main programming language. It is reasonably fast for the development of critical apps and platforms. Fintech development with Java enables platform-independent programming and multi-threading support.  


Python is frequently used in the finance industry for mobile and web-based programming services. The language accepts various types of data, easily detects errors, is highly adaptable, and allows third-party integration.   

Mobile banking app providers use Python for pricing, risk, and trade management platforms. 


How to develop a fintech solution

There are multiple options to choose from when developing fintech websites and mobile banking app insecurity. Nowadays, fintech is following a new approach, including customer experience, automation, high security, fast decision-making, and many more. 

A narrow focus on JavaScript enables experts from ELITEX Systems to build fintech solutions smoothly and within settled timeframes. 

Let’s talk about your project

Drop us a line! We would love to hear from you.

Scroll to Top