Senior Software Developer

Position Overview

Pantheon Data is seeking a Senior Software Developer with expertise in Microsoft C# and .NET frameworks to support the Defense Health Agency in modernizing and migrating legacy applications to AWS Gov Cloud. The developer will play a key role in re‑architecting mission‑critical applications to improve scalability, security, and compliance within DHA’s enterprise IT environment. This role requires deep technical proficiency, strong collaboration skills, and the ability to deliver cloud‑ready solutions aligned with stringent federal standards.

• Analyze existing C# and .NET applications to document architectures, dependencies, and integration points.
• Lead the re‑architecting and modernization of legacy .NET applications to ensure optimal performance and security in AWS Gov Cloud.
• Implement code changes and system modifications to meet DHA compliance requirements, including HIPAA, FedRAMP, and DoD Impact Level standards.
• Collaborate with Dev Sec Ops  teams to integrate secure coding practices, CI/CD pipelines, Git repositories, and automated testing into migration workflows.
• Design and execute migration strategies for transitioning applications from on‑premises to cloud‑native AWS services.
• Modify, optimize, and refactor applications to leverage AWS services (e.g., EC2, S3, RDS, Lambda) for scalability and resiliency.
• Develop new cloud‑native features and functionalities to enhance DHA’s enterprise applications.
• Conduct unit, regression, and performance testing to validate applications in the DHA cloud environment.
• Ensure security, compliance, and auditability are embedded throughout the software development lifecycle.
• Communicate progress, risks, and technical challenges clearly to DHA stakeholders and leadership.
• Produce detailed documentation, migration playbooks, and best practices to support repeatable and scalable modernization efforts.

• Bachelor’s degree in Computer Science, Information Systems, Business Administration, or a related field.
• Minimum of 8 years of experience in software development with a strong background in C# and .NET frameworks.
• Proven experience in migrating and re‑architecting applications to AWS cloud environments.
• Familiarity with AWS services and cloud architecture best practices.
• Strong understanding of cloud computing concepts and AWS services.
• Experience working within federal environments, adhering to various security and compliance standards.
• Strong knowledge of Dev Ops principles and experience with Git and associated tools.
• Excellent problem‑solving skills and ability to work independently or as part of a team.
• Effective communication and teamwork abilities.
• Ability to work effectively remotely in cross‑functional teams.
• Ability to meet deadlines and produce quality work.
• Proficient in Microsoft Suite software including Outlook, Word, Excel, SharePoint, and PowerPoint.

• AWS certifications (e.g., AWS Certified Solutions Architect Associate) are a plus.

U.S. Citizenship with the ability to obtain and maintain a DoD Secret clearance.

Hybrid – 7700 Arlington Boulevard, Suite 5101, Falls Church, VA 22042.

The salary range for this position is $110,000 - $130,000. Salary will be set based on experience, geographic location, and contractual requirements and may fall outside of this range.

We are committed to providing competitive salaries and benefits to increase employee satisfaction and productivity. Additional details are available at the company website.

All qualified applicants will be considered for employment without regard to disability, status as a protected veteran, or any other status protected by applicable federal, state, local, or international law.