<p class="whitespace-normal break-words">LightFeather is seeking a <strong>Senior Full-Stack Developer</strong> who will lead the development, maintenance, and enhancement of critical web applications and APIs for a federal agency's national registry operations. This role requires expertise in .NET development, Drupal CMS, and API integration, as well as the ability to ensure Section 508 compliance and support mission-critical government web services.</p><p class="whitespace-normal break-words">This role provides the opportunity to work on high-impact web applications and APIs that serve the federal financial sector, ensuring secure, accessible, and scalable application solutions.</p><ul class="[&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc space-y-1.5 pl-7"><li class="whitespace-normal break-words"><strong>Location:</strong> Remote with preference for Silver Spring, MD area candidates</li><li class="whitespace-normal break-words"><strong>Job Type:</strong> Full Time</li><li class="whitespace-normal break-words"><strong>Citizenship:</strong> U.S. Citizenship Required</li><li class="whitespace-normal break-words"><strong>Clearance Requirement:</strong> Public Trust or higher preferred</li></ul><p class="whitespace-normal break-words"><strong>Key Responsibilities</strong></p><ul class="[&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc space-y-1.5 pl-7"><li class="whitespace-normal break-words">Develop and maintain .NET applications using C# and .NET Framework 4.8 for registry and financial operations.</li><li class="whitespace-normal break-words">Maintain and upgrade Drupal CMS, including potential re-platforming to Drupal 12.1.</li><li class="whitespace-normal break-words">Maintain and enhance SOAP and REST APIs supporting state agency integrations and public registry access.</li><li class="whitespace-normal break-words">Ensure Section 508 compliance across all web applications and implement accessibility best practices.</li><li class="whitespace-normal break-words">Implement and maintain Login.gov integration with existing SQL authentication systems.</li><li class="whitespace-normal break-words">Design and develop custom software solutions for registry data processing and financial tracking operations.</li><li class="whitespace-normal break-words">Create and maintain API documentation, technical specifications, and development project plans.</li><li class="whitespace-normal break-words">Apply secure coding practices and coordinate application security reviews with federal partners.</li><li class="whitespace-normal break-words">Monitor and optimize application performance, troubleshoot issues, and implement enhancements.</li></ul><p class="whitespace-normal break-words"><strong>Required Qualifications</strong></p><ul class="[&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc space-y-1.5 pl-7"><li class="whitespace-normal break-words">U.S. Citizenship required.</li><li class="whitespace-normal break-words">Public Trust clearance or ability to obtain.</li><li class="whitespace-normal break-words">Minimum 5+ years of experience in full-stack development with strong focus on .NET and web technologies.</li><li class="whitespace-normal break-words">Expert-level proficiency in C#, .NET Framework 4.8, PHP, JavaScript, and SQL.</li><li class="whitespace-normal break-words">Strong experience with Drupal CMS, IIS configuration, HTML5, CSS3, and responsive web design.</li><li class="whitespace-normal break-words">Proven experience with SOAP and REST API development, documentation, and integration.</li><li class="whitespace-normal break-words">Understanding of Section 508 accessibility standards and federal web compliance requirements.</li></ul><p class="whitespace-normal break-words"><strong>Preferred Skills</strong></p><ul class="[&:not(:last-child)_ul]:pb-1 [&:not(:last-child)_ol]:pb-1 list-disc space-y-1.5 pl-7"><li class="whitespace-normal break-words">Experience working with federal agencies or government web application projects.</li><li class="whitespace-normal break-words">Knowledge of AWS services, Redis, and cloud-based application deployment.</li><li class="whitespace-normal break-words">Familiarity with Python scripting and automation tools.</li><li class="whitespace-normal break-words">Experience with MS Access integration and macro development.</li></ul><p><strong>Why Join LightFeather?</strong></p><p>At LightFeather, you're not just taking a job—you're joining a purpose-driven team that delivers innovative, mission-critical solutions to make a real difference. You'll work on diverse, meaningful projects that challenge and inspire you, alongside some of the best minds in the industry.</p>