Why Code Review Plays a Key Part in Modern Software Development, Blog section Wise at Leapwise

4 Tips Why Adequate Code Review Process Plays a Key Part in Modern Software Engineering

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Code is like a book written by multiple authors, each with their own writing style, ideas, and language patterns, but also different levels of expertise. In addition to skilful sentence formation, each author needs to be careful about grammar, context, and meaning of words, spelling, and much more. A code review process needs to be conducted and the code perfected, before it is ready for use, just like professionally written texts need to be proofread.

Each new line of code that is added to a program already containing hundreds of thousands or millions of lines of code increases the complexity of the complete solution. As complexity increases, further development, maintenance, and error correction become more difficult, which in turn also increases the cost of work of such systems.

The importance of code review in software development, therefore, plays a key role.

Weekly Leapwise Code Review in Software Engineering
Weekly code review at Leapwise

Why are regular code reviews important?

#1 The code review process allows a more reliable and more stable product 

During code review, different aspects are taken into account, including whether or not business demands are being met, but also design checks, logical error identification, and removing unnecessary complexity. New functionalities must be verified through automatized tests and meet obligatory requirements such as size function, naming variables, code commenting, design patterns usage, documentation, and so on. In this way, we are creating good quality software, i.e. a more reliable and more stable product. 

#2 Faster delivery of new functionalities

Implementing new or expanding existing functionalities becomes more simple if the software is well structured. Regular code maintenance and code reviews in software engineering help to maintain interior system design, which in turn has a positive effect on the team’s productivity and ultimately on client satisfaction. 

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#3 Identifying problems on time and long-term cost reduction

Systemic code review process helps identify problems as early as the implementation stage, reducing the need for later corrections, and repetition of all the steps in code development (design, implementation, testing, and integration). Besides, regular code review increases end-product software quality and enables a long-term reduction in maintenance costs.

#4 Sharing knowledge with code reviews in software engineering

Sharing domain knowledge, as well as technical knowledge within a development team, is another advantage of this practice. More experienced team members can pass their knowledge on and share their best code review practices and methods of work. All team members get an opportunity to explore and take in somebody else’s code, and learn from one another. This leads to understanding various aspects of a big software system.

New team member onboarding at Leapwise
New team member onboarding at Leapwise

Human side of development

At Leapwise, we strongly believe in creating an environment where our employees continuously develop and improve their skills. Therefore, we pay special attention to education and sharing knowledge within the company. As our first company value says, people first, we build personalized annual development plans, outlining a person’s professional and career goals with an action plan to get there.

Since the technologies used somewhat differ from team to team, we regularly attend lectures and do code reviews for the entire development department that nurture collaborations, in order to additionally support this method of learning and mutual information exchange to enhance our collective knowledge. We also have clearly defined internal guidelines for backend and frontend development teams, which serve as a written guide of all the best practices and solutions we have learned so far. In this way, each person in a team always gets both verbal, as well as written work assistance to rely on.

In the end, although the quality of the final product is important, it is equally crucial to provide employees with a platform to grow, achieve their full potential, and make competent and conscientious business decisions.