Every senior, experienced developer once started their career as a junior developer with basic coding skills and foundational knowledge of computer science. Junior developers gradually learn real-world design patterns, architectural decisions, advanced programming concepts, and domain knowledge to transition into senior developers—those who understand the big picture of the software products they develop.
Being a senior developer is not a permanent badge based on your past experience—your “seniority” depends on how you work and the decisions you make to ensure the success of a software project. A poor decision or a deliberate wrong action can damage your reputation, so senior developers must always be mindful of their coding activities and their consequences.
In this article, we will explore things that senior developers never do to maintain their reputation within a software development team. Avoid these habits and actions to become a skilled senior developer and advance your career!
Overcomplicating Project Architecture
An artist showcases their skill and experience through paintings. Similarly, a project’s source code becomes the playground for developers to demonstrate their expertise. Using an optimized infrastructure and dependencies focused on architectural simplicity is a great way to prove your experience.
However, adding advanced architectural components beyond what a project actually needs—just to show off expertise or make the project look “high-end”—results in overengineering. An overengineered project introduces unnecessary complexity to the entire team, even when the project itself only requires a simple solution.
A common example is startups implementing hundreds of microservices when a simple monolithic REST API would suffice.
A great case study is Stack Overflow, which serves millions of developers without needing hundreds of microservices.
Senior developers never overcomplicate project architecture to showcase their skills or make a project appear sophisticated—they focus on simplifying the architecture to use resources efficiently and impress through minimalism.
Writing Overly Complex Code & Chasing “Perfect” Code
Using appropriate design patterns in source code enhances maintainability. Additionally, experienced developers leverage language features, design patterns, and efficient data structures to improve software performance and maintainability.
However, perfect code does not exist—developers can always refine their code using design patterns and language features, believing they are achieving perfection. But what happens when a developer over-improves their code beyond the “good enough” threshold?
Striving for perfection often leads to overengineering the code.
For example, imagine implementing a Fahrenheit-to-Celsius converter in Python as part of a simple weather app. A senior developer anticipates future maintenance needs but never adds unnecessary complexity in pursuit of “perfect” code—they write simple, sufficient, and maintainable code.
They improve code only when necessary for maintainability but never write unnecessarily complex code based on speculative future requirements.
Ignoring Increasing Technical Debt
Technical debt arises when developers choose short-term, easy solutions without considering long-term consequences, especially regarding maintainability. While technical debt is unavoidable in the competitive software industry with tight budgets, it can be managed through continuous code improvements and well-organized code review sessions. Technical debt can also accumulate in project architecture components.
Here are common situations that lead to technical debt:
- Writing code solely to ship features and fix bugs without prioritizing maintainability.
- Extending features on a weak code foundation by adding duplicate code and quick fixes—for example, working on a plugin without stabilizing the core plugin runtime APIs.
- Choosing infrastructure and runtime services that are difficult to scale for a high-user product.
- Ignoring outdated, unsupported, or deprecated code and libraries.
- Integrating incompatible libraries or sticking with suboptimal architectural decisions.
Technical debt may seem harmless at first, but if it accumulates too much, it can shorten the lifespan of your product.
From the blog CS@Worcester – Nguyen Technique by Nguyen Vuong and used with permission of the author. All other rights reserved by the author.