A guide to the popular programming languages used for trading systems

How an algorithmic trading system will work is dependent on the programming language used, and whether it will work well depends on your understanding of that programming language. 

There are a number of programming languages each with there own advantages and disadvantages, and just like any other decision, you will have to weigh the pros and cons of each when deciding which one you would like to learn. A few factors go into what kind of programming languages companies would rather their employees learn. Instead of saying, "well people like Java, I'll go with that," consider the kinds of firms you are applying to, and which language seems best suited for each one's business and culture.  

Deciding on a language will depend on determining what kind of trading system you will be using. Do you intend to design an execution based trading system? Will it require a high-performance backtester? Questions like these will eventually lead you to the answer for which programming language will make you seem like a good candidate for hire. But in order to make this decision, you will also need to have a decent understanding of the pros and cons of each one. Read the guide below to learn more about the programming languages that you can use to develop a trading system architecture:

Read below to learn more about which programming languages will work best for your trading system

1. Java
Java has grown extremely popular since it first emerged. The promise behind this particular high-level language is build a program once, and you can run it anywhere – an advantage that has fueled Java's ascent. There are a number of benefits to this language that make it a better option than many others. It is an easy-to-use and reliable language. It can be debugged, written and learned easily, and places much importance on checking for errors. Issues that wouldn't appear until execution time when using other languages are found quickly with Java. 

In addition, another major advantage of using Java is the fact that this particular language is platform-independent. The object-oriented language also allows users to create modular programs and reusable codes. Programmers can easily move a program from one platform to another without issue, a massive benefit. It's not just ease of use and versatility that has made Java so popular though. Each component of the language has been designed with security in mind. 

2. Python
Python is another object-oriented language that is quite readable. The easy-to-learn programming language is interactive, as well as portable, which allows it to be handled with ease. Another language that makes technology jobs in the finance sector easier, its structure is well organized, which means that beginners and longtime-coders alike can quickly begin producing programs with Python. In addition, a programmer who is having trouble learning the language can easily find help from the supportive Python community. The language is also versatile like Java, and can be run on multiple platforms without much of a change to its interface. And not only is Python a quick language to learn, it is also fast to code with. Programmers can skip a number of steps that other languages require, which can bring down the cost of system maintenance. 

Another advantage to Python is that it is easy to affix new modules to the language, making it quite expansive. A large set of modules for Python is already available. This allows users to share functionality between various programs by deconstructing them into individual modules and applying them to various architectures. 

3. C++
This general-purpose language is typically used in systems programming, and is quite popular. C++ is a complicated language that is not for beginners, and works well for object-oriented programming, data abstraction and traditional programming amongst other uses.  Microsoft has claimed that almost every world-class software is designed using C++. While this was once the rapidly ascending language, it has largely been replaced by Java, but C++ still has its advantages. For example, Java uses a significant amount of memory, which gives C++ the advantage when being run on some devices. Another advantage that C++ holds over Java is deterministic destruction. When an object is deleted in a C++ environment, the destruction is executed immediately, which allows resources utilized by the object to be released right away.

Each programming language has grown popular due to their particular advantages, and it will be up to you to decide which will make you appealing to hiring managers. Just keep in mind the connection between the companies that you are applying for, and the particular pros and cons of the language that you choose to learn.