> Markdown version of [/jobs/ext/3034691-decal-senior-full-stack-net-modernization-developer](https://www.wearedevelopers.com/jobs/ext/3034691-decal-senior-full-stack-net-modernization-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). --- # DECAL Senior Full-Stack .NET Modernization Developer - **Company:** D & C Electrical Contractor Inc - **Location:** Duluth, GA, United States - **Experience:** Expert - **Salary:** $122,242.0 - **Contract:** Permanent contract - **Skills:** Adobe Analytics, ASP.NET, .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Applications Architecture, Application Integration Architecture, Application Services, ASP.NET MVC Framework, Audit Trail, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Configuration Management, Code Review, Data Architecture, Data Cleansing, Data Migration, Middleware, Github, Microsoft SQL Server, Performance Tuning, Scrum Methodology, Release Management, Power BI, SQL Stored Procedures, SQL Server Reporting Services, Transact-SQL, Web Content Accessibility Guidelines, Web Applications, Web Application Frameworks, Enterprise Software Applications, Cloud Platform System, ReactJS, Delivery Pipeline, Boomi, Technical Debt, Material UI, Information Technology, Google Cloud Functions, Front End Software Development, Virtual Agents, Cloud Integration, Api Design, ASP.NET Applications, Serverless Computing, Mulesoft, Web Api - **Published:** September 23, 2026 - **Apply:** https://www.thejobnetwork.com/job/92869108-0b3d-48f7-8b39-19735be66f4f/senior-fullstack-net-modernization-developer- ## About the Role and operational support. Success in this role requires initiative, accountability, and the ability to work independently. If you're looking for a highly structured environment where work is narrowly defined and tasks are handed to you step-by-step, this is probably not the right fit. If you enjoy building, leading, and owning outcomes, you'll thrive here. ., * 8+ years of professional .NET development experience - C#, ASP.NET MVC, Web API * Demonstrated, hands-on experience migrating legacy ASP.NET applications to modern .NET (6, 7, 8 or 10) - not just exposure * Production SQL Server experience: stored procedures, T-SQL tuning, schema migrations, data cleanup * Azure hands-on: App Services, Function Apps, deployment pipelines, configuration management * 5+ years delivering software in Agile (Scrum or Kanban) environments using ADO or GitHub, * You have designed and maintained RESTful APIs that external systems depend on * You have debugged production issues independently, without a team lead walking you through it Preferred Qualifications These will make you effective faster. They are not dealbreakers, but they distinguish competitive candidates. * React experience - specifically building components within an existing application, not greenfield * Exposer to .NET 10 * Power BI or SSRS reporting development * Experience with government, healthcare, or public-sector systems - you understand compliance, auditability, and data sensitivity * Familiarity with ADA/WCAG 2.1 AA accessibility standards * Exposure to Azure Agentic AI services or integration of AI-driven features in production applications * Experience with middleware platforms such as Boomi or MuleSoft * Background working with PII data and the security protocols that protect it Education * Bachelor's degree in Computer Science, Information Technology, or a related field - or equivalent work experience that demonstrates the same depth ## Description DECAL's core licensing platform is a mission-critical application that supports child care licensing, provider management, and program eligibility across the State of Georgia. We are in the middle of a major modernization effort, moving from a legacy ASP.NET architecture to .NET 8+, modern APIs, Azure cloud services, and a React-based user experience. This is not a maintenance or production support role. This position is for a senior engineer who wants to lead modernization efforts, solve complex technical problems, and help shape the future architecture of a statewide platform. You will play a key role in technical design decisions, application architecture, cloud integration, and delivery. Our team is intentionally lean. That means ownership matters. You will be expected to take a solution from concept to production, including design, development, testing, deployment, documentation, * Hybrid: Tuesday-Thursday on-site at DECAL headquarters, Atlanta (subject to manager discretion) * Mandatory in-person: All Hands, Enterprise Applications meetings, DECAL All Staff, and designated on-site milestones What You Will Do Application Modernization (Core of this Role) * Champion the modernization of DECAL's mission-critical licensing and eligibility applications, transitioning legacy solutions to modern .NET and Azure-based architectures. * Design and implement scalable, secure, and maintainable application solutions that reduce technical debt and improve long-term supportability. * Build and evolve API-first integrations and services that enable future platform capabilities. * Develop cloud-native solutions using Azure App Services, Azure Functions, and related Azure technologies. * Own the SQL Server platform, including data architecture, performance tuning, data migration, and platform modernization. * Implement and maintain CI/CD pipelines using Azure DevOps to automate testing, deployment, and release management. * Drive engineering excellence through code reviews, automation, documentation, and adherence to modern development practices. Frontend & Integration * Build and maintain React-based UI components as part of the modernization roadmap * Demonstrate a strong understanding of web application rendering patterns, including client side rendering (CSR), server-side rendering (SSR), component-based architectures, and modern frontend frameworks. * Integrate third-party services and internal APIs; document every integration cleanly * Implement and maintain reporting using SSRS and Power BI * Participate in AI integration initiatives - Azure Agentic AI services, Copilot tooling, and chatbot integrations where applicable Quality, Documentation & Support * Write code that your teammates can read and maintain six months from now * Provide production support and own root-cause analysis when things break * Maintain application documentation, deployment runbooks, and user-facing guides * Participate in architecture reviews, code reviews, and sprint ceremonies ## Related Videos - [Web APIs you might not know about](https://www.wearedevelopers.com/videos/281-web-apis-you-might-not-know-about) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [Grappling With Clunky Old Software? 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