> Markdown version of [/jobs/ext/1933343-senior-net-asp-net-developer](https://www.wearedevelopers.com/jobs/ext/1933343-senior-net-asp-net-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior .NET / ASP.NET Developer

- **Company:** Lucayan Technology Solutions LLC
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Query Performance, ASP.NET, JavaScript (Programming Language), .NET Framework, Agile Methodology, Amazon Web Services, ASP.NET MVC Framework, C Sharp (Programming Language), Cloud Engineering, Code Review, CompTIA Security+, Data Security, Design of User Interfaces, Model View Controller (MVC), OpenID, Oracle Databases, Oracle (Applications), Secure Coding, Software Engineering, Web Applications, Openapi, Okta, Backend, Data Strategy, Information Technology, Github Enterprise, Decoding, Devsecops, Microservices
- **Published:** August 5, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9077343/senior-net-aspnet-developer

## About the Role

* 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

## Description

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., * 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


## Related Videos

- [Building Multi-Tenant ASP.NET Core Applications: Best Practices and Real-World Solutions](https://www.wearedevelopers.com/videos/1552-building-multi-tenant-asp-net-core-applications-best-practices-and-real-world-solutions)
- [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect)
- [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers)
- [Grappling With Clunky Old Software? Start by Understanding What’s Inside!](https://www.wearedevelopers.com/videos/1189-grappling-with-clunky-old-software-start-by-understanding-what-s-inside)
- [Delegating the chores of authenticating users to Keycloak](https://www.wearedevelopers.com/videos/1558-delegating-the-chores-of-authenticating-users-to-keycloak)
- [Developing ASP.NET Core Microservices with Dapr: A practical guide](https://www.wearedevelopers.com/videos/1528-developing-asp-net-core-microservices-with-dapr-a-practical-guide)

## Related Articles

- [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)
- [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)
- [Why Attend a Developer Event in 2026?](https://www.wearedevelopers.com/magazine/688-why-attend-a-developer-event-in-2026)
- [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing)