Senior Software Engineer

Company Overview

Pantheon Data (a Kenific Holding company) is a private, small business based in the Washington, DC, area. Founded in 2011, the company initially provided acquisition and supply chain management services to the U.S. Coast Guard. Over the past decade our service offerings have expanded to include infrastructure resiliency, contact center operations, information technology, software engineering, program management, strategic communications, engineering and cybersecurity.

We now serve commercial clients as well as federal agencies in the Department of Homeland Security, Department of Defense and other Federal Civilian Agencies.

Pantheon Data is seeking a Senior Software Engineer to support the Defense Health Agency (DHA) in migrating large, mission‑critical legacy systems into secure, scalable AWS Gov Cloud environments. The engineer will analyze, adapt and modernize C# and .NET applications to ensure seamless performance, compliance and interoperability across DHA’s enterprise health IT ecosystem. This role requires strong technical expertise, hands‑on experience with cloud modernization and the ability to deliver secure, cloud‑native solutions aligned with DHA’s mission.

• Analyze existing C# and .NET applications to document architecture, dependencies and integration points prior to migration.
• Identify risks, challenges and compatibility issues associated with legacy‑to‑cloud transitions, providing remediation strategies.
• Design and execute comprehensive migration strategies for transitioning systems to AWS Gov Cloud.
• Modify and optimize applications for performance, resiliency and compliance in cloud environments.
• Integrate applications with AWS services (e.g., EC2, S3, RDS, Lambda) to modernize capabilities and reduce reliance on legacy infrastructure.
• Leverage AWS SDKs, APIs and automation tools to streamline deployment and management of applications.
• Develop new cloud‑native features and functionality to meet evolving DHA mission requirements.
• Conduct rigorous testing (unit, integration, performance) to validate functionality, security and compliance.
• Embed security and compliance controls throughout the development and migration lifecycle in alignment with HIPAA, FedRAMP and DoD IL standards.
• Collaborate with engineering, Dev Sec Ops  and program teams to deliver mission‑ready solutions.
• Communicate progress, risks and technical challenges clearly to DHA stakeholders and leadership.
• Document migration processes, lessons learned and best practices to support future modernization efforts.

• Bachelor’s degree in Computer Science, Engineering or related field.
• Minimum 7 years of experience in C# and .NET development.
• Minimum 5 years of experience with application migration and refactoring.
• Strong understanding of cloud computing concepts and AWS services.
• Excellent problem‑solving and analytical skills.
• Effective communication and teamwork abilities.
• AWS certifications (e.g., AWS Certified Solutions Architect Associate) are a plus.
• Ability to work effectively remotely in cross‑functional teams.
• Ability to meet deadlines and produce quality work.
• Proficient in Microsoft Suite including Outlook, Word, Excel, SharePoint and PowerPoint.

• Less than 25% of travel may be necessary.
• Competitive benefits and career advancement opportunities.

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

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

• Our company prioritizes the benefits of flexibility and collaboration, whether that happens in person or remotely.
• If the position is remote or hybrid, you may periodically work from a Pantheon Data office location or client site.
• If this position is assigned to a Pantheon Data office location or client site, you’ll work with colleagues and clients in person as needed for specific client requirements.

The salary range for this position is $115,000 – $135,000. Salary will be set based on experience, geographic location and contractual requirements and may fall outside of this range.

We…