Senior Full-Stack .NET Developer - Hybrid,In Person Interview

MSys Inc; Atlanta (GA); Hybrid; USD 110,000 - 165,000; Full time

Job summary

MSys Inc is seeking a Senior Full-Stack .NET Developer for a hybrid role in Atlanta, GA. You will lead modernization from ASP.NET to .NET 8, build APIs, and integrate Azure cloud services, while guiding architecture decisions and delivering end-to-end solutions.

The ideal candidate has 8+ years of .NET experience, strong SQL Server, Azure hands-on, and experience with React frontend, CI/CD, and Agile practices.

Qualifications

• 8+ years of professional .NET development experience.
• Experience migrating legacy ASP.NET applications to modern .NET (6/7/8/10).
• Production SQL Server experience (stored procedures, T-SQL, migrations).
• Azure hands-on (App Services, Functions, deployments).
• 5 years delivering software in Agile environments using ADO or GitHub.

Responsibilities

• Modernize legacy applications from ASP.NET to .NET 6/7/8/10 and cloud-native patterns.
• Design and implement scalable, API-first services and integrations.
• Build React-based frontend components as part of the modernization roadmap.
• Develop cloud-native solutions using Azure services and Power BI/SSRS reporting.
• Own CI/CD pipelines with Azure DevOps for automated testing and deployment.
• Lead architecture reviews, code reviews, and documentation efforts.

Skills

NET development

ASP.NET MVC

Azure

SQL Server

React

CI/CD

REST APIs

Agile

Education

Bachelor's degree

Tools

Azure DevOps

GitHub

Power BI

SSRS

Job description

Title:Senior Full-Stack .NET Developer - Hybrid,In Person Interview

Location:Atlanta,GA

Length:Long term

Restriction: w2 or c2c

Description:

Job Description:

Overview

Client'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, 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.

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

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
• Exposure 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

Skills:

• 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