Full Stack .Net Developer

Akumen, Inc

Position Title: Full Stack .Net Developer

The Sr. Full-Stack .NET Developer will support the U.S. Department of State (DOS) application development initiatives, with a strong emphasis on .NET-based enterprise application design, development, integration, and modernization
. This role participates across the full software development lifecycle, supporting the creation of new applications, enhancements to existing systems, and integration between custom, GOTS/COTS, and data-driven platforms.

The ideal candidate is a hands-on, self-directed developer with deep expertise in .NET technologies
, modern web application development, and agile delivery within a secure federal environment. The position requires close collaboration with government stakeholders, business analysts, and cross-functional technical teams to deliver scalable, secure, and user-focused solutions.

This role is mostly remote with some on-site work located in Washington, DC. Candidates must reside in DC/MD/VA and possess an active DOD/DSS Secret clearance (interim acceptable).

Application Design & Development

• Design, develop, enhance, and maintain enterprise-scale .NET applications
  , including new application development and extensions to existing systems.
• Build and integrate custom applications, business intelligence data sources, databases, data warehouse solutions, and GOTS/COTS platforms.
• Develop application interfaces and integration points between new and existing systems using modern service-based architectures.
• Implement application changes, enhancements, and optimizations to meet evolving business and mission needs.

Architecture & Technical Design

• Work with stakeholders to design technical solutions that best meet business, functional, and security requirements.
• Create detailed technical documentation describing application components, modules, data stores, interfaces, and operational procedures.
• Incorporate architectural best practices for extensibility, scalability, maintainability, reliability, and performance
  .
• Develop detailed design documents based on business requirements, functional specifications, and system architecture.
• Identify and document technical requirements, including logical and physical data models.
• Develop and maintain release-specific application architectures, integration architectures, and data architectures.

Agile Delivery & Dev Ops

• Utilize Agile development methodologies to rapidly deliver features aligned with project-level schedules and priorities.
• Support CI/CD pipelines, code migration, configuration management, and release management activities.
• Collaborate with Dev Ops and operations teams to support deployment, monitoring, and production support.
• Ensure all development activities adhere to secure coding standards, configuration management, and change control processes.

Testing, Deployment & Support

• Partner with test teams to define test cases and support unit, integration, and system testing.
• Define implementation and deployment procedures, schedules, and staffing needs to meet delivery timelines.
• Provide technical support for deployed applications and assist with troubleshooting and issue resolution.

User Experience & Accessibility

• Design and implement modern, user-centered software experiences.
• Design Graphical User Interfaces (GUI) and implement Responsive Web Design (RWD).
• Develop mock-ups, prototypes, and technical presentations to communicate design concepts.
• Ensure applications comply with Section 508 accessibility standards and mobile-ready requirements.
• Apply reusable and maintainable design patterns to maximize long-term sustainability.

Documentation & Compliance

• Ensure all application development processes, designs, and technical activities are fully documented.
• Adhere to DOS security policies, federal compliance requirements, and industry best practices.
• Stay current with emerging technologies, industry trends, and innovative approaches to advance DOS application development initiatives.

Qualifications

Required

• 6+ years of professional software development experience
  , with a strong focus on .NET / ASP.NET enterprise applications
  .
• Extensive experience with C#, ASP.NET, .NET Core
  , and modern web application architectures.
• Experience developing front-end applications using JavaScript frameworks (React, Angular, or similar).
• Experience working in Agile environments with CI/CD pipelines (Azure Dev Ops, Jenkins, Git).
• Strong understanding of application integration, APIs, and data-driven systems.
• Ability to collaborate effectively with technical and non-technical stakeholders.
• Active DOD/DSS Secret clearance or higher (interim acceptable).
• Ability to work onsite 100% in Washington, DC.

Desired

• Experience with Microsoft Azure cloud services
  .
• Experience with SQL, data modeling, and database-driven applications.
• Familiarity with Python, Scala, or Unix/Windows scripting (Power Shell, shell).
• Experience supporting BI, data warehouse, and reporting solutions.
• Knowledge of Dev Ops tools such as Git Hub, Jenkins,…