.NET Developer

3M HEALTHCARE; Arlington (VA); On-site; USD 103,800 - 218,100; Full time

Benefits offered by this job

Healthcare benefits

Time off benefits

Retirement plan

Job summary

3M HEALTHCARE in Arlington, VA seeks a mid-level .NET Software Developer to support the U.S. Department of State's Bureau of Diplomatic Security.

You will own the full development lifecycle for a business-critical .NET web application, build front-end components with React and Razor, and work with stakeholders to translate requirements into secure technical solutions. The role requires 5–7 years of software experience, active Secret clearance, a CS/Math degree or equivalent, strong C#, .NET

Qualifications

• 5–7 years of professional software development experience.

Responsibilities

• Own end-to-end development, maintenance, and enhancement of an existing .NET web application.

Education

Bachelor's degree in computer science, software engineering, information technology, or related field

Tools

C#

ASP.NET

.NET Core

React

Razor Pages

SQL Server

REST API

Git

Job description

.NET Developer – Information Technology

We are seeking a mid-level .NET Software Developer to support the U.S. Department of State's Bureau of Diplomatic Security (DS) in maintaining and enhancing a business-critical application. This is a small-team environment – currently a team of one – requiring a resourceful, self‑directed professional who takes ownership of the full development lifecycle with minimal supervision.

Responsibilities

• Own end-to-end development, maintenance, and enhancement of an existing .NET web application.
• Develop and maintain front‑end components using React and Razor views.
• Diagnose and resolve bugs, performance issues, and technical debt independently.
• Collaborate with government stakeholders to translate requirements into technical solutions.
• Write clean, documented, and testable code following secure development best practices.
• Participate in code reviews and contribute to technical documentation.
• Coordinate with the client’s IT and security teams to ensure compliance with DoS security policies.
• Manage deployments and support application environments in accordance with government change control procedures.

Qualifications – Required

• 5–7 years of professional software development experience.
• Active Secret clearance required at time of application.
• Bachelor’s degree in computer science, software engineering, information technology, or a related field (or equivalent experience).
• Proficiency in C# and the .NET framework (ASP.NET, .NET Core).
• Experience with React for front-end development.
• Experience with Razor Pages / Razor Views (ASP.NET MVC or Razor Pages).
• Working knowledge of SQL Server or equivalent relational database systems.
• Familiarity with RESTful API design and integration.
• Proficiency with Git or equivalent version control systems.
• Demonstrated ability to work independently and self-manage priorities with minimal oversight.
• Strong analytical and troubleshooting skills.
• Clear written and verbal communication skills for both technical and non-technical audiences.

Desired

• Prior experience supporting U.S. federal government or national security clients.
• Familiarity with DoS or law enforcement/security agency IT environments.
• Experience with Azure DevOps or similar CI/CD platforms.
• Knowledge of Entity Framework or other ORM tools.
• TypeScript experience.

Pay Range

Proposed salary range for this position is $103,800 – $218,100.

Benefits

Benefits include comprehensive healthcare, wellness, financial, retirement, family support, continuing education, and time‑off benefits.

Equal Opportunity Employer

We are an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.