Senior .NET Developer Security Clearance

Position: Senior .NET Developer with Security Clearance
Position Title:

Senior .NET Developer

Location:

Rockville, MD (On-site 2 days per week requirement) Clearance:
Active Public Trust Clearance Required Salary: $95,000.00 - $

Position Summary:

CCS is hiring a highly qualified Senior .NET Developer specializing in AI-enabled Mission Feature Delivery to drive new feature development for a high-visibility federal mission system. This is a build-forward role focused on delivering new capabilities that advance our client's core mission. You will design and ship robust new functionality on a mature enterprise platform, and you will use AI tools fluently to accelerate how you solution, prototype, and deliver.

We are looking for engineers who can apply AI as a force multiplier in their own work.

Essential Duties & Responsibilities:

* Design, develop, unit test, and peer review new features that expand the platform's mission capabilities, from concept through production release.

* Define the technical approach and accurately estimate effort for new functionality, enhancements, and change requests.

* Use AI tools to solution faster - accelerating design exploration, prototyping, code generation, test scaffolding, documentation, and troubleshooting. (You will use AI; you will not be building AI/ML models.)

* Build scalable, secure web applications using ASP.NET, C#, SQL, and Angular.

* Partner with Business Analysts and QA to fully understand requirements and deliver against them.

* Collaborate with the development team and federal technical stakeholders to plan and execute feature delivery.

* Participate in code reviews and apply secure, defensive coding practices throughout.

* Stay current on tools and techniques - including AI-assisted development - that improve delivery speed and quality. Education, Certification &

Experience:

Education:

* Bachelor's degree Technology, Business, or Related Field

Experience:

* 5+ years of professional ASP.NET / C# back-end development with SQL databases.

* 5+ years of professional Angular, HTML, CSS, and JavaScript front-end development.

* Experience with .NET Core / modern .NET (8+).

* Proven track record delivering new functionality in complex, workflow-driven enterprise systems. Knowledge, Skills & Abilities:
Knowledge:
* AI Solutioning Skills (Required)

* We expect you to work AI-fluently. The following are about using AI to deliver better and faster - not about engineering AI systems:

* Hands-on use of AI code assistants (e.g., Git Hub Copilot, Claude, Tab Nine) in day-to-day development.

* Ability to apply AI tools effectively across the delivery lifecycle - design, prototyping, code, testing, and documentation.

* Sound judgment about where AI accelerates work and where human review and secure-coding discipline must govern the output.

Skills:

* Experience delivering on federal programs and working with government technical stakeholders.

* Familiarity with Azure (App Services, Functions, Key Vault) and cloud-native delivery.

* Familiarity with Databricks
* Experience designing and building AI agents - systems that use LLMs to plan, make decisions, call tools, and complete multi-step tasks with minimal human intervention

* Strong grounding in OOP, SOLID, RESTful APIs, microservices, Git, and CI/CD.

* Secure coding fluency: input validation (SQL injection, XSS), RBAC, MFA, OAuth/JWT, logging, and error handling.

* Azure certifications (e.g., AI-102, Azure Architect) are a plus.

* Proficiency across the stack: T-SQL, Type Script, Node.js, EF, LINQ, Bootstrap, Webpack. Abilities:
* Ability to pass multiple background and employment checks - federal and local. Why Join Command Cyber Solutions:
We recognize that our success begins with our people. We are dedicated to fostering a professional, collaborative, and growth-oriented environment where employees are empowered to excel and advance their careers, CCS offers opportunities to contribute to high-impact federal initiatives, supported by robust professional development programs, competitive compensation, comprehensive benefits, and flexible work arrangements. We prioritize investing in our workforce, ensuring each team member has the resources, support, and career pathways to achieve long-term success while delivering meaningful results for our clients.

Culture:
At CCS, you'll be a part of a team that genuinely supports one another and where leadership is invested in the well-being and success of every employee. We foster a work culture where people are valued for who they are, not just what they do, and where your career goals are taken seriously. You'll be encouraged to grow through mentorship, hands-on experience, and access to continued learning opportunities that align with your aspirations.

Whether you're looking to deepen your expertise, earn new certifications, or take on leadership roles, CCS provides the environment and support to help you get there. Leadership is approachable, collaboration is natural, and success is shared. At CCS, you're not just joining a company; you're joining a community committed…