Application Support Engineer

DescriptionWe are looking for an Application Support Engineer to join a high-performing team in Newport Beach, California, supporting critical transaction-based systems within a fast-paced operational environment. This position combines hands-on database development, production support, and application maintenance, with a strong emphasis on solving data issues and improving system reliability. The ideal candidate brings deep experience with Microsoft SQL Server, solid C# and .NET development skills, and the ability to investigate complex processing exceptions with precision and urgency.Responsibilities:• Build, enhance, and maintain SQL Server database objects such as stored procedures, views, triggers, and complex queries to support business-critical applications.• Investigate data inconsistencies across internal platforms and external sources, identifying root causes for missing, duplicated, or inaccurate transaction records.• Create and refine database solutions designed to handle large transaction volumes while improving performance, scalability, and system stability.• Provide ongoing support for backend applications and Windows Services, resolving production issues and restoring service in a timely manner.• Develop application updates and defect corrections using C#, .NET Framework or .NET Core, and Visual Studio in alignment with established coding practices.• Monitor transaction processing workflows, including authorization, validation, settlement, and invoicing activities, to ensure smooth end-to-end operations.• Perform auditing, reconciliation, and exception management tasks to strengthen data integrity and operational accuracy.• Partner with business teams, operations personnel, and external contacts to troubleshoot issues, resolve incidents, and recommend process improvements.• Contribute to code reviews and maintain clear technical documentation to support long-term application support and knowledge sharing.• Support secure and reliable 24/7 production operations by following organizational standards and established support procedures.Requirements• 5+ years of experience in application support, database development, or a similar technical support engineering role.• Advanced proficiency with Microsoft SQL Server, including database design, query tuning, performance optimization, and architecture best practices.• Strong programming experience with C# and .NET Framework or .NET Core for application enhancement and maintenance.• Hands-on experience using Microsoft Visual Studio in a software development environment.• Practical knowledge of supporting Windows Services and backend processing applications.• Ability to analyze transaction data, investigate discrepancies, and resolve complex production issues with a high level of accuracy.• Familiarity with object-oriented programming concepts and disciplined software development practices.• Exposure to technologies such as Active Directory, Cisco environments, Dell systems, or related infrastructure support tools is beneficial.Job typePerm