Senior Software Application Engineer

Venteon; Detroit (MI); On-site; USD 90,000 - 130,000; Full time

Job summary

Venteon is seeking a Senior .NET Application & Quality Engineer to lead hands-on development, debugging, and validation across enterprise systems. The role focuses on strong .NET/C# capabilities, SQL Server proficiency, and experience with REST/SOAP integrations to ensure robust production readiness.

The ideal candidate will partner with analysts, review designs, and drive comprehensive testing—functional, integration, and data-validation—throughout the project lifecycle.

Qualifications

• Bachelor's degree in Computer Science, Information Systems, Software Development, or a related discipline.
• Strong hands-on experience with .NET, .NET Framework, C#, ASP.NET, and enterprise web applications.
• Experience with REST APIs and SOAP web services and system-to-system integrations.
• Experience debugging applications and performing root-cause analysis across enterprise apps.
• Experience with IIS-hosted applications, source control, and modern software development practices.

Responsibilities

• Develop, maintain, troubleshoot, and support enterprise applications built on modern and legacy .NET technologies.
• Partner with Business Analysts to translate business requirements into technically complete and testable requirements.
• Define technical acceptance criteria, data-validation requirements, integration mappings, exception-handling scenarios, and expected downstream results.
• Identify missing requirements, technical dependencies, edge cases, integration impacts, security considerations, and potential failure scenarios.
• Review technical designs and proposed solutions for completeness, maintainability, integration impact, supportability, and testability.
• Perform hands-on debugging and root-cause analysis across application code, SQL Server databases, APIs, web services, integrations, scheduled jobs, file transfers, and infrastructure dependencies.
• Design and execute end-to-end testing covering complete business processes and interconnected systems.
• Perform functional, integration, regression, negative, and data-validation testing.

Skills

.NET Framework

C#

ASP.NET

SQL Server

REST APIs

SOAP Web Services

End-to-end Testing

Root-Cause Analysis

System Integrations

IIS Hosting

Documentation

Collaboration

Education

Bachelor's degree in Computer Science, Information Systems, Software Development, or a related discipline

Tools

SQL Server Management Studio

Git

Visual Studio

Postman

Job description

Senior .NET Application & Quality Engineer The ideal candidate will bring strong hands-on experience with .NET, C#, Microsoft SQL Server, APIs, web services, and enterprise integrations. This individual should be comfortable analyzing complex applications end-to-end, reviewing code and database logic, troubleshooting difficult issues, validating integrations, identifying gaps before they reach production, and ensuring delivered solutions meet business requirements.

About the Role

ESSENTIAL DUTIES & RESPONSIBILITIES

• Develop, maintain, troubleshoot, and support enterprise applications built on modern and legacy .NET technologies.
• Partner with Business Analysts to translate business requirements into technically complete and testable requirements.
• Define technical acceptance criteria, data-validation requirements, integration mappings, exception-handling scenarios, and expected downstream results.
• Identify missing requirements, technical dependencies, edge cases, integration impacts, security considerations, and potential failure scenarios.
• Review technical designs and proposed solutions for completeness, maintainability, integration impact, supportability, and testability.
• Perform hands-on debugging and root-cause analysis across application code, SQL Server databases, APIs, web services, integrations, scheduled jobs, file transfers, and infrastructure dependencies.
• Design and execute end-to-end testing covering complete business processes and interconnected systems.
• Perform functional, integration, regression, negative, and data-validation testing.
• Validate application changes across upstream and downstream systems, including customers, vendors, partner systems, APIs, data feeds, and scheduled processes.
• Use Microsoft SQL Server extensively for data investigation, advanced querying, stored procedure analysis, data validation, and database troubleshooting.
• Test and troubleshoot REST APIs, SOAP web services, secure file interfaces, batch jobs, and scheduled processes.
• Reproduce production issues and trace problems through the technology stack to determine the actual root cause.
• Work directly with Developers to troubleshoot issues, validate fixes, and determine production readiness.
• Perform pre- and post-deployment validation, confirm dependencies and rollback requirements, and support release-readiness decisions.
• Assist with complex production incidents and improve development, QA, documentation, supportability, and release-quality practices.

Qualifications

• Bachelor's degree in Computer Science, Information Systems, Software Development, or a related discipline; or equivalent professional experience.

Required Skills

• Strong hands-on experience with .NET, .NET Framework, C#, ASP.NET, and enterprise web applications.
• Strong experience with Microsoft SQL Server, including advanced SQL querying, stored procedures, data validation, and database troubleshooting.
• Experience debugging applications and performing complex root-cause analysis.
• Experience with REST APIs and/or SOAP web services and system-to-system integrations.
• Experience performing integration, regression, functional, negative, and end-to-end testing.
• Experience supporting enterprise applications and troubleshooting complex production issues.
• Experience with IIS-hosted applications, source control, and modern software development practices.
• Ability to independently analyze unfamiliar applications, understand code and SQL interactions, trace integrations, reproduce problems, and determine where and why failures occur.
• Strong written, verbal, documentation, analytical, and collaboration skills.