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Senior C# Winforms Developer Jobs (NOW HIRING)

Recruitment.ai

Senior Software Engineer (.Net/C#)

Maynard, MA · On-site

$129K - $171K/yr

Design and develop robust desktop applications using C# and WinForms within the Visual Studio ... Proficiency in C/C++ for low-level system interactions. * Scripting and development experience with ...

Lockheed Martin

Software Engineer Sr C/C++

Manassas, VA · On-site

$122K - $161K/yr

The Work Lockheed Martin Rotary and Mission Systems is seeking a Software Engineer C/C++ Sr. in Manassas, VA. In this role you will have the responsibility of: Participate in a crossfunctional team ...

Mentor Technical Group

Sr. C&Q Specialist

Juncos, PR · On-site

As a world leader in life science engineering and technical solutions, MTG has the knowledge and ... Collaborate with C&Q Engineers to develop and maintain commissioning and qualification procedures ...

Mentor Technical Group

Sr. C&Q Specialist

Juncos, PR · On-site

MTG is recognized for its expertise in life sciences engineering, ensuring compliance with ... Support Commissioning and Qualification (C&Q) activities for plants and equipment. * Develop ...

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Senior C Winforms Developer information

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How much do senior c# winforms developer jobs pay per year?

As of Jun 20, 2026, the average yearly pay for senior c# winforms developer in the United States is $80,287.00, according to ZipRecruiter salary data. Most workers in this role earn between $41,500.00 and $103,000.00 per year, depending on experience, location, and employer.

What does a Senior C# WinForms Developer do?

A Senior C# WinForms Developer designs, develops, and maintains Windows desktop applications using the C# programming language and the Windows Forms (WinForms) framework. They are responsible for creating user interfaces, implementing business logic, and ensuring the software is efficient, reliable, and user-friendly. In addition to coding, they often mentor junior developers, participate in code reviews, and help set technical standards for projects. Their expertise is crucial for building robust, scalable, and maintainable desktop applications.

What are the key skills and qualifications needed to thrive as a Senior C# Winforms Developer, and why are they important?

To thrive as a Senior C# Winforms Developer, you need advanced proficiency in C#, .NET Framework, Windows Forms development, and a solid background in computer science or related fields. Expertise with Visual Studio, source control systems like Git, and familiarity with SQL databases and unit testing frameworks are typically expected. Strong problem-solving abilities, attention to detail, and effective communication skills help you collaborate with teams and translate requirements into robust software solutions. These skills and qualities are crucial for delivering reliable, maintainable applications and leading development efforts in complex desktop environments.

What are some common challenges faced by Senior C# Winforms Developers when maintaining legacy applications?

Senior C# Winforms Developers often encounter challenges such as outdated libraries, lack of documentation, and tightly coupled code when maintaining legacy applications. Adapting these systems to modern requirements, such as enhancing UI/UX or integrating with newer technologies, can require significant refactoring. Effective troubleshooting and strong communication with stakeholders are essential, as legacy systems often have business-critical functions and limited tolerance for downtime.
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Senior C Winforms Developer jobs near you
Infographic showing various Senior C# Winforms Developer job openings in the United States as of June 2026, with employment types broken down into 83% Full Time, 2% Part Time, and 15% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $80,287 per year, or $38.6 per hour.
Sr. Applications Developer

Sr. Applications Developer

Foundation Software

Strongsville, OH • On-site

$88K - $121K/yr

Full-time

Medical, Dental, Retirement, PTO

This job post has expired today. Applications are no longer accepted.

Foundation Software rating

9.3

Company rating: 9.3 out of 10

Based on 7 frontline employees who took The Breakroom Quiz

11th of 191 rated software companies

Job description

POSITION SUMMARY
Join us to develop the future of real-world, user-centered construction technology with a creative and fun team! Foundation Software is one of the fastest-growing private companies in the U.S. and a Northeast Ohio "top workplace." We're looking for permanent, full-time senior application developers.
The position will help take our software to the next level through developing new software features and modifying/maintaining existing software. Sr. Application Developers participate in design and coding activities with our great team of developers. The ideal candidates will have strong knowledge in C#, Visual Studio, Windows Development (WPF and WinForms), and Microsoft SQL Server.
What is great about working for Foundation? Plenty! We have a fun, casual, yet hard-working culture that invests in our employees, promotes creativity, and delivers on our reputation. Would you like to work for a company that offers manicures and pedicures in the office? We do! How about massages, house cleaning, laundry service, monthly car washes, catered lunches Wednesdays and a monthly happy hour - we offer all this and more!
Essential Functions and Responsibilities:
  • Develop new software services using C# / .NET / Web API / SQL Server / WinForms / WPF in Azure
  • Perform architecture and design activities.
  • Assume responsibility for ongoing architecture of software.
  • Develop software according to end user requirements and quality standards
  • Identify and implement programming patterns and establish standards
  • Participate in code reviews to assist other developers and to enforce patterns and standards in the code base
  • Regularly participate in Story Grooming and Sprint Planning activities
  • Participate in project planning and/or provide accurate estimates on projects/tasks
  • Lead design sessions and participate in pair programming efforts
  • Support, troubleshoot and resolve production issues, including direct interactions with internal and/or external customers as needed
  • Supervise and mentor other developers
  • Demonstrate commitment to building your skills by constantly learning about new techniques and technologies
  • Other duties as assigned

Required Skills and Experience:
  • Bachelor's degree in Business Information Systems, Computer Science, or equivalent experience
  • Must understand and have practiced Agile Scrum development
  • Working experience with Microsoft Azure Cloud Platform
  • Working experience with distributed version control systems such as Azure DevOps.
  • Knowledge of API lifecycle management platforms.
  • Strong working experience with Windows development (WPF/WinForms)
  • Strong experience with MS SQL Server, SQL (TSQL), and database troubleshooting and plan optimization.
  • Practical approach to development that balances the technical approach with business objectives and user needs
  • 5 years of development experience architecting and implementing solutions using the following technologies, methods, and languages
    • .NET Core Web API
    • C#, LINQ, SQL
    • Visual Studio and GIT
    • Microsoft SQL Server
    • Dependency injection and Unit Testing
    • REST
    • Azure (Functions, Insights, Redis, SQL, Storage)
    • Microservices
    • WinForms and WPF (MVVM)
  • Strong interpersonal skills and the ability to communicate effectively with internal cross functional teams, leadership, and external clients

At Foundation we believe in and promote a work-life balance with a top-notch workout facility, fitness classes and free personal training; and for those competitive types, a game room complete with table tennis, foosball, and video game systems. Our culture is a casual atmosphere, yet we get the job done. Also, some comforts of home, there is a full kitchen, free coffee and specialty flavors, soft drinks, and snacks.
Other employee rewards include tickets to Cleveland sporting events, a variety of lunch and learns, and various employee-appreciation events throughout the year. Benefits include paid vacation, paid holidays, 401(k) with match, and tuition reimbursement, plus medical, eye and dental. Now offering discounts on pet, home, and auto insurance through Liberty Mutual!
Foundation is constantly recognized as one of Northeast Ohio's top workplaces. We are a 20-time winner of the NorthCoast 99 award, a multi-year winner of The Plain Dealer's Top Workplaces award, and have been recognized multiple years on the Inc. 5000 list of fastest-growing private companies in the U.S.
Let us start your future at Foundation!
Foundation Software is an Equal Opportunity Employer.

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