In this fast-changing world, technological terms such as “L1, L2, L3, and L4” are frequently used, but they often mean different things that depend on the context. For the people who are eager to learn full-stack development need to understand these terms. Having the right knowledge of these terms can help you set the goals that can help you stand out in the future.
In this article, we have discussed in detail these levels. People who are interested in full-stack development should apply for the Full Stack Developer Course in Delhi can learn about these levels. For your convenience, we have tried to make you to explain these two levels, called IT Support Tiers and Developer Seniority Levels, in simple language. So, let’s begin discussing this in detail:
Part 1: L1 to L4 as Career Seniority (The Developer Ladder)
When you join a tech company after completing Full Stack Developer Online Training, your “Level” usually defines your experience, your salary, and how much responsibility you carry.
L1: The Junior Full Stack Developer (The Learner)
L1 is the entry point for most freshers. At this stage, you are like a student who has just entered the professional world.
- What they do:
Well, you can fully focus on the small as well as well-defined tasks, and this includes fixing a small bug on the website as well as writing simple code for the backend.
- Guidance:
You are not expected to know everything. You will work under the close supervision of a senior.
- Goal:
To learn the company’s “codebase” (the existing code) and understand how professional projects are managed.
L2: The Mid-Level Developer (The Doer)
When you gain experience of 1-3 years, you can move to level 2. With this, you may get comfortable with both the front end as well as backend.
- What they do:
You can handle medium-sized features independently. You don’t need someone holding your hand every hour.
- Responsibilities:
You start reviewing the code of L1 developers and suggest improvements.
- Goal:
To write clean, efficient code and solve problems without needing constant help.
L3: The Senior Developer (The Designer)
L3 is a major milestone. With 4 to 7 years of experience, you aren’t just writing code; you are designing systems.
- What they do:
You decide how a project should be built. You choose which database to use or which framework (like React or Angular) is best for the job.
- Leadership:
You mentor juniors and mid-level developers, helping them grow.
- Goal:
To ensure the entire application is scalable (can handle many users) and secure.
L4: The Principal or Staff Engineer (The Visionary)
L4 is a high-level role, often reached after 8-10+ years.
- What they do:
At this level, you look at the “big picture.” You might work across multiple teams to ensure all the different software products of a company work well together.
- Focus:
You solve the most complex technical challenges that others couldn’t fix. You focus more on strategy and architecture than on daily coding tasks.
Part 2: L1 to L4 as Support Tiers (The Problem-Solving Path)
In many companies, especially in maintenance and operations, L1 through L4 refers to how a problem (a “ticket”) is handled when something goes wrong with an app.
L1 Support: The First Responders
They are the people with whom you will interact when you call to customer care or when in a live chat.
- Tasks:
They are able to handle the basic problems, such as password resets, login problems, or simple “how-to” questions.
- Tools:
They will follow the script for solving the common issues rapidly.
L2 Support: The Technical Specialists
If L1 cannot fix the issue, it “escalates” to L2. These professionals have deeper technical knowledge.
- Tasks:
They will check the server logs as well as check the database to understand the reason why a specific user is facing an issue.
- Skills:
They understand the software’s configuration and can fix more complex glitches that don’t require changing the actual code.
L3 Support: The Code Experts (The Developers)
L3 is where the Full Stack Developers come in. If the software has a “bug” (a mistake in the original code), L2 cannot fix it.
- Tasks:
They open the source code, find the mistake, write a fix, and “patch” the software.
- Profile:
These are usually the same engineers who built the application.
L4 Support: The Ultimate Solution (External Experts)
L4 is rare and usually refers to help from outside the company.
- Tasks:
If your app uses a tool made by another company (like Microsoft or Google) and that tool breaks, you call their L4 experts to fix it.
Apart from this, if you take the Full Stack Developer Course in Gurgaon, then this can help in understanding the importance of achieving these levels and set realistic goals. Also you can become an architect and grow through the stages.
Why Is It Necessary to Understand?
These levels are necessary to understand for professionals who are looking to increase their graph of success:
- Job Interviews:
In many top tech firms, the “Level” determines your salary package. Knowing where you fit (e.g., L2 or L3) helps you negotiate better.
- Broad Skills:
This training will help you prepare for L3 support roles because you will learn how to dive into the code and fix root causes, making you highly valuable to employers.
Conclusion:
Whether you are just starting out or looking to level up the journey from L1 to L4 is about gaining the experience. It should help in taking more responsibility and learning to solve harder problems. Well, this foundation in both frontend as well as backend technologies is your ladder to success.