Top 5 Wpf ui developer Jobs in Fairfax, Va

Software Developer I (Junior)
3Si Security Systems —Ashburn, VA
- Computer Science
- Pass drug screening
- Office
- Disability insurance
- Dental insurance
Quick Apply
Senior .NET Developer
Evolver Inc —Washington, DC
- $135,000 - $165,000 a year
- Full-time
- Hybrid work
- Background check
- Azure
- Computer Science
- Health insurance
- Dental insurance
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Software Engineer in Test – C# / WPF
CaseGuard —Arlington, VA
- Computer science
- Computer Science
- Mid-level
- Paid holidays
- Health insurance
SR. & JR. .NET Developers
CyberBalance, LLC —Washington, DC
- Computer Science
- Office
- Windows
- Commuter assistance
- Paid holidays
C++ Application Developer
NASK Incorporated —Fairfax, VA
- Computer Science
- 5 years
- Office
- Profit sharing
- Retirement plan
Quick Apply

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Senior .NET Developer (US citizen/Hybrid Work/Public Trust Required)
IvoryCloud —Rockville, MD
Use AI tools to solution faster — accelerating design exploration, prototyping, code generation, test scaffolding, documentation, and troubleshooting.
$110,000 - $140,000 a year
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10d
Senior Application Developer
SOSi —Fort Belvoir, VA
Bachelor’s degree or postgraduate degree in engineering, scientific, technical, or business management disciplines from an accredited college or university.
$140,000 - $155,000 a year
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Sr. Front End Developer
Intelliguard Group, LLC —Columbus, OH
Strong understanding of front-end architecture, design pattern, and responsive design principles. Architects develop and maintains complex front-end components…
$0 a year
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wpf ui developer jobs near fairfax, va

Software Developer I (Junior)

3Si Security Systems -
Ashburn, VA

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Job Details

Benefits

Disability insurance
Dental insurance
Vision insurance
401(k) matching
Life insurance

Qualifications

Version control
RESTful API
Visual Studio
C#
Development environments
Defect tracking tools
Developer tools

Full Job Description

At 3Si, our mission is to make your world, safer. As a global leader in innovative security technology, we help businesses and law enforcement prevent and respond to crime through field-proven solutions and trusted partnerships. With over 100+ years of combined experience through our merged companies, our expertise drives measurable impact in communities worldwide.

We specialize in GPS tracking, video surveillance, and integrated response technologies that deter theft and accelerate criminal apprehension. Designed for retail, financial institutions, law enforcement, and more, our solutions combine cutting-edge tools with unmatched response capabilities. Through our exclusive DirectToDispatch™ technology, verified crime alerts are sent directly to law enforcement dispatch centers in real time—bypassing traditional third-party monitoring delays—to enable rapid, precise response when it matters most.

At 3Si, meaningful work makes a difference. We’re a purpose-driven team that values innovation, trust, and collaboration. From engineering to sales and support, every role contributes to our mission to protect communities and make the world safer. We offer a hybrid, flexible work culture, competitive benefits, and the chance to grow alongside a team of passionate, dedicated professionals.

Join us—and be part of something that matters. The Junior Software Developer is responsible for participating in technical development, testing, debugging, and implementation of enhancements to enterprise-level applications. The developer is expected to work collaboratively with senior developers and members of the team, contributing to the mission-critical success of our organization. Additionally, you may be tasked with writing Jira tickets, technical user guides, and supporting documentation.

Primary Responsibilities

Participate in full software development lifecycle activities, including design, development, testing, debugging, and implementation

Design and develop scalable software solutions using C# and .NET

Collaborate with other developers and cross-functional teams to ensure technical alignment with project goals

Utilize development tools such as Visual Studio, Git, Jira, and

Work with technologies including REST/ServiceStack, WPF, Progress/Telerik UI Toolkit

Support and maintain client and server utilizing REST and HTTPS protocols

Perform other duties as needed to support the company’s mission and project requirements

Knowledge, Skills, and Abilities

Understanding of full-stack development practices

Proficiency in C# and the .NET framework

Experience with Windows Presentation Foundation (WPF)

Knowledge of software development best practices and secure coding techniques

Ability to work with RESTful APIs and HTTP network technologies

Skilled in using Visual Studio, Git, and Jira

Strong problem-solving and analytical abilities

Effective communication and collaboration skills

Ability to work independently or within a team environment

Qualifications

Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related technical field

Equivalent professional experience may be considered in lieu of formal education

Associate degree in a technical discipline combined with relevant experience and/or industry certifications may also be considered

1 year of related software development experience

1 year of hands-on experience in C#/.NET development

Experience with reusable C# library development and version-controlled environments

Additional Comments

Position on-site in Ashburn, VA.

Successful candidates must pass a comprehensive background investigation

Pre-employment drug screening is required
Comprehensive benefits package including medical, dental, vision, life insurance, short- and long-term disability starting on your first day
401(k) retirement savings plan with company match

Quick Apply

Refine Your Search

wpf ui developer jobs in fairfax, va

Software Developer I (Junior)

Senior .NET Developer

Software Engineer in Test – C# / WPF

SR. & JR. .NET Developers

C++ Application Developer

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