.NET C# Developer

Overview

The C# .NET Developer will contribute to the development, enhancement, and maintenance of web applications and services that enable mission‑critical operations in a federal environment.

This role will work hands‑on with the .NET framework and associated technologies to build clean, efficient, and reliable back‑end components that integrate seamlessly with front‑end and cloud‑based systems. You will collaborate closely with senior developers, architects, designers, product owners, and other cross‑functional stakeholders to deliver high‑quality software solutions that adhere to best practices, coding standards, and security requirements.

This position aligns with Cayuse’s core values of Innovation, Excellence, Collaboration, Adaptability, and Integrity by fostering technical solutions that meet customer needs, promoting teamwork, and prioritizing quality in deliverables.

Responsibilities

• Design, develop, test, and maintain application features using C#, ASP.NET, Entity Framework, and SQL Server.

• Modify and enhance existing application code to improve performance, functionality, and maintainability.

• Integrate third‑party components, services, and APIs (e.g., REST/RPC-based) as needed.

• Participate in the full software development lifecycle (SDLC), including planning, requirements analysis, implementation, testing, deployment, and operations support.

• Collaborate with senior developers and architects to implement technical designs and follow established architectural patterns, coding standards, and design guidelines.

• Write clean, scalable, and maintainable code aligned with team guidelines, industry best practices, and security standards.

• Develop and execute unit tests and integration tests to validate functionality, ensure code quality, and support regression testing.

• Troubleshoot and resolve technical issues, defects, and performance bottlenecks, including database and service-level performance.

• Use Git/GitLab for source control, branching strategies, code reviews, and collaborative development workflows.

• Support operations and maintenance (O&M) activities, including minor enhancements, bug fixes, performance tuning, and production support as needed.

• Participate actively in code reviews and incorporate feedback from senior engineers to continuously improve code quality and your technical proficiency.

• Assist in remediating code and package vulnerabilities identified through automated scans and security reviews, following secure coding guidance and direction from senior team members.

• Other duties as assigned.

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, Engineering, or a related field;

• OR equivalent experience (e.g., 8+ years of relevant professional software development experience in lieu of a degree).

• 3–5 years of professional experience designing and developing software using C# and the .NET framework.

• Hands‑on experience with ASP.NET, Entity Framework, and SQL Server (queries, stored procedures, performance considerations).

• Familiarity with architectural patterns and API styles, including REST and RPC.

• Experience writing and executing unit tests and performing integration testing within a structured SDLC.

• Understanding of secure coding practices and a willingness to follow guidance for vulnerability remediation and security hardening.

• Demonstrated ability to collaborate with cross‑functional teams (e.g., product owners, testers, designers, operations teams) and translate functional requirements into well‑defined technical tasks.

• Active Top Secret Security Clearance is required.

• Must be able to pass a background check. May require additional background checks as required by projects and/or clients at any time during employment.

Minimum Skills Required:

• Excellent problem-solving and analytical skills.

• Strong communication and interpersonal skills.

• Ability to respond effectively to customers with a sense of urgency.

• Proficient in Microsoft and Adobe toolsets, including Excel, Word, PowerPoint, Acrobat, etc.

• Highly motivated with the ability to handle and manage multiple tasks at any one time.

• Ability to forge new relationships, individual and teaming in nature.

• Must be a Self-starter, that can work independently and as part of a team.

Preferred Qualifications:

• Experience working in a federal government or regulated environment.

• Familiarity with DevSecOps practices, CI/CD pipelines, and automated build/test tools.

• Experience with cloud platforms (e.g., Azure, AWS, or similar) and integrating .NET applications with cloud services.

• Exposure to Agile methodologies (Scrum, Kanban) and related tools (e.g., Jira, Azure DevOps).

• Experience with static code analysis and vulnerability scanning tools.

Our Commitment to you / overview of benefits

• Medical, Dental and Vision Insurance; Wellness Program

• Flexible Spending Accounts (Healthcare, Dependent Care, Commuter)

• Short-Term and Long-Term Disability options

• Basic Life and AD&D Insurance (Company Provided)

• Voluntary Life and AD&D options

• 401(k) Retirement Savings Plan with matching after one year

• Paid Time Off

Reports to: Program Manager

Working Conditions

• Professional office environment with the ability to work on-site.

• Must be physically and mentally able to perform duties extended periods of time.

• Ability to use a computer and other office productivity tools with sufficient speed to meet the demands of this position.

• Must be able to establish a productive and professional workspace.

• Must be able to sit for long periods of time looking at computer screen.

• May be asked to work a flexible schedule which may include holidays.

• May be asked to travel for business or professional development purposes.

• May be asked to work hours outside of normal business hours.

Other Duties: Please note this job description is not designed to cover or contain a comprehensive list of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

Cayuse is an Equal Opportunity Employer. All employment decisions are based on merit, qualifications, skills, and abilities. All qualified applicants will receive consideration for employment in accordance with any applicable federal, state, or local law.

Pay Range

USD $145,000.00 - USD $151,258.00 /Yr.

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Location US-DC-Washington

ID 104651

Category Information Technology

Position Type Full-Time Salary Exempt

Remote No

Clearance Required Top Secret