Application Developer
Penske Vehicle Services · Troy, MI · 1 mo ago
EngineeringFull-time
Essential job functions
- Maintain, troubleshoot, and enhance existing applications developed using C# and .NET Framework 4.8.
- Develop new application functionality and modernized solutions using .NET 10 and current Microsoft development practices.
- Analyze business requirements and translate them into reliable, supportable application solutions.
- Modify and support web applications, background processes, scheduled jobs, APIs, web services, and system integrations.
- Develop clean, maintainable, testable, and documented code aligned with organizational standards.
- Participate in modernization efforts where legacy application functionality is transitioned into current .NET technologies.
- Write, maintain, and troubleshoot complex T-SQL queries, stored procedures, views, functions, and data-processing routines.
- Investigate application and integration issues involving missing, incorrect, duplicated, or improperly processed data.
- Support data imports, exports, interfaces, automated processes, and client-specific business workflows.
- Review SQL logic for accuracy, performance, reliability, and maintainability.
- Assist with SQL performance troubleshooting, including inefficient queries, blocking, execution delays, and large data operations.
- Perform controlled data corrections when required, with appropriate validation, documentation, and approvals.
- Investigate production application issues, identify root cause when possible, and implement or coordinate corrective action.
- Support business-critical line-of-business applications, including eGAMS and related client-facing processes.
- Support incidents involving integrations, scheduled processing, web services, database procedures, application errors, and data discrepancies.
- Participate in prioritization and resolution of application-related tickets based on business impact and client needs.
- Document findings, resolutions, workarounds, and preventive improvements.
- Create and support interfaces between internal applications, external client systems, databases, APIs, file transfers, and automated processing platforms.
- Troubleshoot inbound and outbound file processing, web service communication, API integrations, and scheduled application processes.
- Create and execute developer-level unit, integration, and regression testing plans for application changes, enhancements, corrections, and integrations; coordinate independent user acceptance testing with business stakeholders or a designated testing resource.
- Support controlled deployments across development, testing, beta, and production environments.
- Document application changes, SQL changes, deployment instructions, rollback considerations, and technical procedures.
- Support post-deployment validation and resolution of release-related issues.
Qualifications
- Bachelor's degree in Computer Science, Information Systems, Software Development, or a related discipline; or equivalent relevant professional experience.
- Three to five years of professional application development experience in a Microsoft-based environment.
- Strong development experience with C#, .NET Framework 4.8, ASP.NET and/or Microsoft web application development.
- Strong Microsoft SQL Server and T-SQL experience, including stored procedures, joins, data updates, troubleshooting, and query optimization.
- Experience supporting existing production applications and resolving application or data-related issues.
- Experience with the software development lifecycle, including requirements review, development, testing, deployment, and production support.
- Ability to analyze complex application and data-processing issues independently.
- Strong written, verbal, documentation, and collaboration skills.
Preferred Skills and Qualifications
- Experience developing solutions using .NET 8, .NET 9, or .NET 10.
- Experience modernizing applications from legacy .NET Framework platforms to current .NET technologies.
- Experience with REST APIs, SOAP web services, JSON, XML, SFTP, file-processing interfaces, or external integrations.
- Experience with Microsoft IIS-hosted applications and Git or other source control tools.
- Experience with application logging, exception management, troubleshooting tools, and production monitoring.
- Familiarity with scheduled processing or automation platforms such as VisualCron.
- Experience supporting client-facing business applications or systems with high data accuracy requirements.
- Familiarity with secure coding practices, access controls, and audit/compliance expectations.
Physical Requirements
- 100% onsite role (5 days/week)
- Occasional after-hours support as needed