Find the Best C# Programming Jobs
Check out a sample of the 238 C# Programming jobs posted on Upwork
FoxPro and .vcx File Expert Needed
Fixed-price ‐ Posted 4 days agoFixed-price
Experience level
We are seeking an expert to assist with understanding and modifying .vcx and FoxPro files. The ideal candidate will have experience in…
Certified Selenium Automation Tester Required
Fixed-price ‐ Posted 4 days agoFixed-price
Experience level
Project Overview We are looking for an experienced Certified Selenium Automation Tester for a one-time project to create and execute au…
Senior Software Developer (Embarcadero RAD Studio / C++Builder) with client contact (Remote)
Hourly ‐ Posted 4 days agoHours needed
Duration
Experience level
We are a small, well-established software company based in Germany and have been developing professional software for interior fit-outs…
C++ Mentor for Matching Engine
Hourly ‐ Posted 4 days agoHours needed
Duration
Experience level
Format: Live pair programming only, via VS Code Live Share (screen share, both coding in real time). Job Description: If this budget…
ASP websites programmer.
Hourly ‐ Posted 3 days agoHours needed
Duration
Experience level
We own 8 websites, of which 5 are ASP - 3 are needing minor fixing according to a detailed specs.
.NET Developer (ASP.NET/C#) using Claude Code - SaaS maintenance & new features
Hourly ‐ Posted 4 days agoHours needed
Duration
Experience level
ABOUT US We are HLTH Compliance, a UK health-sector compliance consultancy. We own HLTH Manage, an established ASP.NET (C#) web applica…
Task Management Tracker API Development
Fixed-price ‐ Posted 4 days agoFixed-price
Experience level
## Project Overview I am looking for a junior ASP.NET Core developer to build a simple Task Management REST API for learning purposes.…
Senior Software Engineer
Hourly ‐ Posted 4 days agoHours needed
Duration
Experience level
You'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform throug…
C# Developer for Clover Integration
Hourly ‐ Posted 3 days agoHours needed
Duration
Experience level
Looking for a C# developer to integrate with Clover's API. Responsibilities include pulling inventory from Clover and pushing orders to…
I need to modify the OS, which is made fully for gaming and I need you to tunnned for max fps
Fixed-price ‐ Posted 3 days agoFixed-price
Experience level
I need to modify the custom ISO I've already made for gaming so that it boosts even more fps and everything in it is set so that nothin…
How to Become a C# Developer
Are you an ambitious and creative software developer? Do you crave challenges and building new tools and services for clients both large and small? If so, you may have what it takes to become a freelance C# developer on Upwork.
What does a C# Developer Do?
A C# developer is a type of software engineer who specializes in C#. They write the code for applications and programs that run on Windows and other operating systems. In many cases, C# developers work with other developers or business leaders as part of a team building new products or supporting ongoing services.
C# can be used for a wide variety of purposes, so what a C# developer does is quite broad, and developers may choose to specialize in a particular subset of C#. For example, C# can be used to create and run websites and software-as-a-service platforms that run on cloud-based servers, or it can be used to make native Windows applications. C# is also used for writing video games, with the Unity platform being a popular framework for doing so.
What skills do I need to become a C# developer?
C# developers will typically be expected to have a bachelor’s degree or higher in computer science, though exceptions are often made for strong candidates with proven experience. Committing code to open-source projects on public repositories such as GitHub is a good way to demonstrate programming skills to potential clients with technical backgrounds.
Below is a list of skills, tools, and requirements C# developers will be expected to know. Self-taught developers of other programming languages who are learning C# may already be aware of general programming tools and concepts and can skip straight to step 3.
1. Create a developer environment
C# developers (and programmers in general) all tend to use a similar set of tools, regardless of the specifics of the work at hand. Much like there are many kinds of word processors or spreadsheet software that achieve similar goals, so there are myriad software and software development environments for writing code.
A C# developer will need an IDE (integrated development environment), version control software, and access to a command-line interface. Popular examples for each of these include Visual Studio, Git, and .NET CLI respectively, but there are many alternatives, and which one to choose largely comes down to personal preference.
2. Learn the core C# language and libraries
As a C# developer, you will naturally be expected to know C# and many of the best practices and common design patterns used when working with C#. It’s important to have a solid base understanding of the language and its common library, as you will be using the same language regardless of whether you are writing a video game, a website, or a desktop application. Learning C# data structures, inheritance and composition rules, and design patterns is key to understanding C#.
3. Learn the specific tools for your trade
You will need to learn a certain subset of tools, software libraries, and frameworks specific to the particular project that you are working on. For example, a popular tool for developing video games using C# is Unity, so a C# programmer for a video game client will be expected to have experience with using Unity. This means understanding how to interact with it programmatically, having familiarity with the Unity libraries, and knowing how to use those effectively to build and create a video game.
There are many C# libraries and frameworks. The specific ones used will depend on the type of work being done and the individual job. Legacy systems sometimes force developers into using particular tools or frameworks, so the more experience you have with a variety of tools and frameworks, the more flexible you will be and the more C# developer jobs will become accessible to you.
Should I get a C# developer certification?
In addition to developing your skills, obtaining a professional certification can help your Upwork profile stand out. A variety of C# certifications are available.
The standard certification for C# developers are MCSD: App Builder certification from Microsoft. However, that certification has a number of prerequisite certifications that must be passed before the MCSD certification can be gained. There is some flexibility in which certifications you can obtain to qualify, but the recommended certifications for a C# developers are MCSA: Web Applications and 70-486: Developing ASP.NET MVC Web Applications.
Obtaining the certifications in the following order is recommended:
- MCSA: Web Applications
- 70-486: Developing ASP.NET MVC Web Applications
- MCSD: App Builder
A certification can be a boost for a prospective C# developer, but often it is not required. Demonstrable experience and code samples that display your work are often valued as much as certifications.
Jump-start your freelance C# developer career on Upwork and start looking for your first job. Eager to learn more about C# developer jobs on Upwork? Check out these additional resources:
Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this section. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyse and determine the tools or services that would best fit their specific needs and situation.
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