Senior Software Engineer

Position Title: Senior Software Engineer (C# / WinForms)

Clearance Requirements: None

Position Status: Contract – 12 months (Opportunity to Extend)

Pay Rate: Up to $65/hour (W2)

Position Description

As a Senior Software Engineer, you will be responsible for designing, developing, and enhancing desktop-based software applications using Microsoft technologies. You will collaborate closely with Product Owners and fellow engineers to deliver high-quality solutions, resolve production issues, and continuously improve system functionality. This role is ideal for a self-motivated engineer who values clean code, thoughtful design, and teamwork within an Agile environment.

Key Responsibilities

• Design, develop, and implement new features and software enhancements
• Analyze, troubleshoot, and resolve production issues and defects
• Collaborate with Product Owners to clarify requirements and expected outcomes
• Contribute to technical design discussions and propose creative solutions
• Develop tools, utilities, and best practices to improve team efficiency
• Utilize Azure DevOps for source control, task tracking, and CI/CD workflows
• Integrate third-party and partner services into existing applications
• Follow established coding standards, version control practices, and procedures
• Perform thorough unit and integration testing to ensure software quality
• Participate in Agile/Scrum ceremonies and iterative development cycles
• Work collaboratively within a cross-functional, team-oriented environment

Required Skills / Education

• 4+ years of hands-on experience developing in C# within a desktop environment (WinForms or WPF)
• Strong expertise in object-oriented programming and software design principles
• Experience with web services, including XML and JSON
• Solid understanding and application of design patterns
• Proven experience working in Agile/Scrum development environments
• Strong analytical, problem-solving, and troubleshooting abilities
• Excellent written and verbal communication skills
• High attention to detail with a commitment to clean, maintainable code
• Experience with unit testing frameworks such as MSTest, NUnit, or xUnit

Preferred / Nice-to-Have Skills

• Experience with WCF, NHibernate, and Windows Workflow
• SQL Server development or integration experience
• Exposure to multi-tier or distributed system architectures
• Familiarity with Microsoft Azure or cloud-based development environments

About Seneca Resources

At Seneca Resources, we are more than just a staffing and consulting firm—we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact.

When you work with Seneca, you’re choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team that advocates for you every step of the way.

Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.