Application Support Engineer

Description We 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. Technology Doesn't Change the World, People Do.®

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All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit  for more information.

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