Senior .NET Full-Stack Developer (Remote)

Quantam; Frankfort (KY); On-site; USD 83,000 - 131,000; Full time

Benefits offered by this job

Health benefits

Paid time off

401(k) plan

Job summary

Quantam Solutions seeks a Senior Full Stack .NET Developer to join its team on a contract basis in the United States. The role focuses on developing, maintaining, and modernizing enterprise applications, with duties spanning design, troubleshooting, and deployment across .NET Framework, WinForms, WCF, REST APIs, and web services.

The candidate should demonstrate strong problem-solving skills, experience with Azure DevOps, and an ability to work across application, integration, database, and

Qualifications

• Experience developing and consuming REST APIs and Web Services.
• Experience with Azure DevOps for source control, work tracking, builds, releases, and deployment processes.
• Experience with Microsoft Azure services such as App Services, Azure SQL, and Blob Storage.
• Strong experience with T-SQL, including stored procedures, views, triggers, tables, SQL jobs, and database troubleshooting.
• Experience supporting or modernizing legacy Microsoft applications, including .NET Framework, WinForms, WCF, SOAP, and XML-based integrations.
• Strong systems analysis and troubleshooting skills.
• Ability to understand unfamiliar applications, integrations, data flows, infrastructure dependencies, and system behavior.
• Experience diagnosing and resolving complex enterprise application and production issues.
• Understanding of application security standards and secure development practices, including OWASP and CIS guidelines.
• Working knowledge of Microsoft Office 365.
• Strong written and verbal communication skills.
• Ability to collaborate effectively within a distributed, remote development team.

Responsibilities

• Collaborate with business analysts and stakeholders to analyze business requirements and translate them into technical solutions.
• Create and manage technical tasks, user stories, bugs, and development activities using Azure DevOps.
• Support interoperability and modernization initiatives involving existing .NET Framework, WinForms, WCF, and other legacy applications.
• Develop and maintain RESTful Web APIs, web services, integrations, and service-oriented applications.
• Use development and troubleshooting tools including Visual Studio, SQL Server Management Studio, xUnit/NUnit, SOAP UI, Chrome Developer Tools, and Visual Studio Debugger.
• Configure, deploy, and support WinForms applications, web applications, and web services hosted in environments including Microsoft IIS, Windows Server, and SQL Server.
• Analyze existing applications to identify technical debt, reliability concerns, security risks, performance issues, and modernization opportunities.
• Develop and maintain data integration and data movement processes using technologies such as SSIS, Web Services, and Web APIs.
• Support application deployment and release processes using Azure DevOps, InstallShield, and WiX.
• Write clean, maintainable, secure code based on functional and non-functional requirements.
• Follow established development standards, code quality practices, security requirements, and maintainability best practices.
• Monitor and improve code quality using tools such as SonarQube.
• Prepare data and test scenarios for unit, peer, integration, and system testing.
• Perform testing and debugging of new and existing applications, identify defects, and implement corrective solutions.
• Perform diagnostic analysis of complex application and production issues, determine root causes, and develop sustainable fixes.
• Document application functionality, integrations, dependencies, technical solutions, and troubleshooting procedures.
• Participate in production support and application maintenance activities as needed.

Skills

REST APIs

Azure DevOps

Microsoft Azure

T-SQL

Legacy Microsoft apps

Security practices

Office 365

Distributed/team collaboration

Education

Bachelor’s degree in Computer Science or related field

5+ years professional experience

Associate degree + 2+ years experience

Tools

Visual Studio

SQL Server Management Studio

xUnit/NUnit

SOAP UI

Job description

Quantam Solutions seeks a Senior Full Stack .NET Developer to join its team on a contract basis in the United States. The role focuses on developing, maintaining, and modernizing enterprise applications, with duties spanning design, troubleshooting, and deployment across .NET Framework, WinForms, WCF, REST APIs, and web services.

The candidate should demonstrate strong problem-solving skills, experience with Azure DevOps, and an ability to work across application, integration, database, and