Top 10 Things Every .NET Developer Needs to Do in 2026

Think about a cricket player who wants to get better each season. They do not just turn up and play matches. They keep a small set of habits: they practice in the nets every morning, they watch their old games to find mistakes, they keep their kit clean and ready, and they learn one new shot each year. None of these habits is huge on its own. But together, season after season, they turn an average player into a strong one.

A .NET developer in 2026 is exactly the same. You do not become better by accident. You become better by picking a handful of good habits and doing them again and again. This post is your practice plan. It is a list of ten simple, friendly things that will make you a calmer, stronger, and more useful .NET developer this year.

We will keep everything gentle and clear. You do not need to be an expert to start. You just need to begin.

1. Move to .NET 10 (the LTS release)

The first and easiest win is to stand on solid ground. In 2026, that ground is .NET 10.

.NET 10 is an LTS release, which stands for Long Term Support. This means Microsoft promises to give it security fixes and bug fixes for three full years, until late 2028. For a learner, LTS is the kindest choice. The floor under your feet stays steady, so you can focus on learning instead of chasing changes.

When you target .NET 10, you also get C# 14 for free. You do not have to switch it on. There is a newer wave coming too: C# 15 with union types is being previewed in early .NET 11 builds. You do not need that yet. Stay on the stable LTS road for now.

Here is the lovely part: just by upgrading, your apps often run 15 to 30 percent faster. The runtime got smarter at things like inlining and stack allocation, and you get that speed without changing a single line.

// A tiny .NET 10 program. Clean and modern.
var greeting = "Hello from .NET 10";
Console.WriteLine(greeting);
 
// In .NET 10 you can even run a single .cs file with no project:
//   dotnet run app.cs
// Great for quick experiments and learning.

2. Learn the new C# 14 features (slowly)

C# 14 added several friendly features. The good news is that they are all additive. Nothing in your old code breaks. You can learn them one at a time, like learning one new word a day.

A favourite is the field keyword. It lets you add a small check to a property without writing a separate private variable by hand.

public class Student
{
    // The 'field' keyword refers to the hidden backing storage.
    public string Name
    {
        get => field;
        set => field = value?.Trim() ?? "";
    }
}

Another nice one is extension members, which let you add not just methods but also properties to types you do not own. Take these slowly. Pick one feature, use it in a tiny example, and move on when it feels natural.

3. Make writing tests a daily habit

If you do only one thing from this whole list, do this one. Write tests.

A test is a small piece of code that checks your real code does the right thing. Think of it as a seatbelt. When you change something and accidentally break it, the test shouts at you straight away, instead of a user finding the bug next week.

Many beginners skip tests to "go faster." But tests actually make you faster over time, because you stop being scared of touching your own code.

// A simple test using xUnit.
public class CalculatorTests
{
    [Fact]
    public void Add_TwoNumbers_ReturnsSum()
    {
        var result = 2 + 3;
        Assert.Equal(5, result);
    }
}

Start with tiny tests. Test one small function. Then test another. The habit matters more than being perfect.

4. Add observability with OpenTelemetry

Observability is a big word for a simple idea: your app should be able to tell you what it is doing. It does this through three things: logs (messages), metrics (numbers), and traces (the path a request took).

Picture a delivery driver. Logs are their notes ("dropped parcel at 4 pm"). Metrics are their totals ("40 parcels today"). Traces are the full route they drove. Together, you can see exactly what happened when something goes wrong.

In .NET 10, the built-in OpenTelemetry support makes this easy. OpenTelemetry is a vendor-neutral standard, so your telemetry works across many tools instead of locking you in. This is not just for big companies. Even a small app is calmer to run when it can explain itself.

5. Get comfortable with minimal APIs

When you build a web service in .NET 10, the default template gives you a minimal API. This is a short, clean way to write web endpoints without a lot of ceremony.

var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();
 
// A route that says hello using an id from the URL.
app.MapGet("/hello/{name}", (string name) => $"Hi, {name}!");
 
app.Run();

Notice the route GET /hello/{name}. When someone visits that path, the name from the URL is handed straight to your code. Minimal APIs are perfect for learning because you can see the whole web service in just a few lines. Start here before reaching for heavier patterns.

6. Know the library licensing changes

This one is about staying out of trouble. In 2025, three very popular .NET libraries changed their rules. MediatR, AutoMapper, and MassTransit moved to commercial licenses.

This does not mean they are banned. There is still a free community tier for small companies (under a revenue limit), for learning, for non-profits, and for non-production use. But a real business may now need to pay for the newer versions.

For a beginner, the simplest path is this: you usually do not need these libraries at all when you are learning. Plain classes and the built-in tools take you very far.

If you later need what they do, there are free options too, like writing a tiny mediator yourself, using RabbitMQ.Client directly, or trying MIT-licensed libraries. The lesson: always check a library's license before you lean on it.

7. Try NativeAOT on a small project

NativeAOT (Ahead-Of-Time) compiles your app straight into a native program. The result starts up very fast and ships as a small, self-contained file with no separate runtime needed.

Think of it like a ready-to-eat meal versus raw ingredients. A normal .NET app brings its ingredients and cooks at startup. A NativeAOT app is already cooked, so it serves instantly. This is wonderful for small command-line tools and cloud functions that must start quickly.

You do not need this on day one. First get comfortable building and running normal apps. Then, when you feel ready, publish a tiny console app with NativeAOT and feel how fast it starts.

# Publish a console app as a native, fast-starting binary.
dotnet publish -c Release -r win-x64 --self-contained \
  /p:PublishAot=true

8. Set up clean projects from day one

Tidy habits at the start save you pain later. When you make a new project, take a few minutes to set it up well.

A good starting setup includes turning on nullable reference types (so the compiler warns you about possible null mistakes), turning on warnings-as-errors for your own code, and keeping a sensible folder layout. The dotnet new templates in .NET 10 already give you a clean base.

A simple habit: one project should do one clear job. A web API project handles the web. A class library holds your core logic. Keeping them separate makes your code easier to test and read.

9. Learn to ship safely with CI

Shipping code should feel calm, not scary. The way to get there is CI, which stands for Continuous Integration. CI is a robot that builds your code and runs your tests automatically every time you push a change.

If the build fails or a test goes red, the robot tells you before the broken code reaches anyone. It is like a kind friend who checks your homework before you hand it in.

You do not need anything fancy to begin. A small workflow file that runs dotnet build and dotnet test on every push is already a huge step up. Combine this with habit number 3 (tests) and you have a strong safety net.

10. Keep learning one new thing at a time

The last habit ties all the others together. Do not try to learn everything at once. That just leads to a tired, confused brain. Instead, pick one new thing and give it real attention until it feels easy.

Maybe this month you master tests. Next month, observability. The month after, NativeAOT. Slow and steady wins here. A developer who learns one solid skill each month is far ahead by the end of the year of one who tried to learn ten things in one week and remembered none.

Keep a small notebook of what you learn. Read the official Microsoft Learn docs, which are friendly and accurate. And be patient with yourself. Every strong developer was once exactly where you are now.

// A nice habit: leave your future self a small note.
// This explains *why*, not just *what*.
public decimal ApplyDiscount(decimal price)
{
    // Festival sale: 10% off everything this week.
    return price * 0.90m;
}

Quick recap

• .NET 10 is the LTS release for 2026. Stand on it, and get C# 14 for free.
• Learn C# 14 features slowly. They are additive, so nothing breaks.
• Write tests. This is the single most valuable habit on the list.
• Add observability with built-in OpenTelemetry so your app can explain itself.
• Use minimal APIs to build web services with little ceremony.
• Know that MediatR, AutoMapper, and MassTransit went commercial in 2025. Check licenses.
• Try NativeAOT on a small project for fast startup, once you are ready.
• Set up clean projects from day one with nullable types and tidy folders.
• Ship safely with CI that builds and tests every change.
• Learn one new thing at a time. Slow and steady wins the year.

References and further reading

• What's new in .NET 10 (Microsoft Learn)
• .NET Observability with OpenTelemetry (Microsoft Learn)
• Native AOT deployment overview (Microsoft Learn)
• What's new in C# 14 (Microsoft Learn)
• MediatR and MassTransit Going Commercial (Milan Jovanović)