Senior .NET / ASP.NET Developer

About Lucayan Technology Solutions LLC At Lucayan Technology Solutions LLC, we deliver secure, innovative solutions in support of national defense and intelligence missions. As a trusted government contracting partner, we provide top-tier intelligence and technology services that safeguard our nation. Our team is mission-driven, and we are committed to building careers that matter. Location: This is a US-based remote position. Employment Type: Full-Time Security Clearance: No security clearance required. Minimum active Tier 1 (or higher) federal background investigation required prior to start; ability to obtain a CAC if required by duties. Job Summary We are looking for a Senior .NET / ASP.NET Developer to maintain and modernize enterprise web applications for a federal government IT program supporting the U.S. Army Corps of Engineers (USACE), Walla Walla District. You will maintain the existing ASP.NET MVC Core application while also deciphering, maintaining, and modernizing legacy Classic ASP code, working closely with the DBA and DevSecOps/Cloud Engineer to deliver secure, well-documented software. Key Responsibilities Maintain and enhance the program's ASP.NET MVC Core application, connected to an Oracle backend Decipher, maintain, and modernize undocumented legacy Classic ASP code across application modules Write clean, well-documented C# and JavaScript code adhering to DoD secure coding standards (STIGs) Store and manage code within the designated CWBI GitHub Enterprise environment following DevSecOps practices Implement standardized authentication using common identity services (Login.gov, OpenID, Keycloak) and build health-check endpoints for automated uptime monitoring Participate in two-week Agile sprint cycles, contributing to delivery of a minimum of ten (10) MVPs quarterly and four (4) major feature releases annually Participate in code reviews, professional demonstrations of releases, and requirements/UI-UX analysis Support integration with the CWBI Data Strategy, including exposing data via OpenAPI-compliant service interfaces Coordinate with the Senior Oracle DBA on query performance and data access patterns Required Qualifications U.S. Citizenship required Minimum active Tier 1 (or higher) federal background investigation, favorably adjudicated, prior to start Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent experience) Minimum 5-7 years of full-stack or application development experience Expertise in developing and maintaining .NET Framework/.NET Core MVC web applications connected to Oracle databases Mastery of deciphering, maintaining, and modernizing undocumented Classic ASP code Strong proficiency in C#, JavaScript, and modern web-based user interface development Demonstrated experience implementing secure coding principles (e.g., DoD STIGs) in web application code Working knowledge of Agile/DevSecOps methodologies Preferred Qualifications Experience with cloud architecture and migration, preferably within AWS GovCloud Federal government or DoD application development background Experience with GitHub Enterprise and modern DevSecOps toolchains Familiarity with microservices architecture and hardened container images Certifications Active Tier 1+ background investigation prior to start CompTIA Security+ or DoD 8140-approved equivalent required within six (6) months of contract start EC-Council Certified DevSecOps Engineer (ECDE) desired for senior/lead roles