Senior Full-Stack .NET Modernization Developer
Location: Atlanta, GA (Hybrid)
Duration: Long Term Contract
| Skill | Required / Desired | Amount of Experience | Years of Experience |
| React experience specifically building components within an existing application, not greenfield Exposer to .NET 10 | Required | 3 Years | |
| Power BI or SSRS reporting development | Required | 3 Years | |
| Experience with government, healthcare, or public-sector systems you understand compliance, auditability, and data sensitivity | Required | 3 Years | |
| Familiarity with ADA/WCAG 2.1 AA accessibility standards | Required | 3 Years | |
| Exposure to Azure Agentic AI services or integration of AI-driven features in production applications | Required | 3 Years | |
| Experience with middleware platforms such as Boomi or MuleSoft | Required | 3 Years | |
Work Location
Must be physically located in Georgia
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)
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
Required Qualifications
EXPERIENCE
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
WHAT HANDS-ON MEANS HERE
You have modernized a real application not a proof of concept from legacy ASP.NET
to .NET 6/7/8/10
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
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