Senior Application Support Engineer

RCRO LLC; Pennsylvania; On-site; USD 85,000 - 120,000; Full time

Job summary

RCRO LLC is hiring a Senior Application Support Engineer skilled in .NET technologies and SQL Server for enterprise retail applications support. This role involves troubleshooting complex issues, maintaining databases, and collaborating with technical teams.

The ideal candidate possesses over 10 years of relevant experience, a Bachelor's in Computer Science, and strong problem-solving skills. Join a fast-paced environment ensuring the reliability of customer-facing applications.

Qualifications

• 10+ years of experience in Application Support / Production Support / Systems Analysis.
• Strong hands-on experience with SQL Server and T-SQL.
• Experience supporting enterprise retail or eCommerce applications.

Responsibilities

• Provide L2/L3 production and application support for enterprise retail applications.
• Troubleshoot and resolve customer-facing software and system issues.
• Monitor production systems and application performance.

Skills

Application Support

SQL Server

T-SQL

SSIS

PowerShell

Incident Management

Database Troubleshooting

Problem Solving

Communication

Education

Bachelor’s degree in Computer Science, IT, or related field

Tools

ServiceNow

JIRA

Remedy

Job description

We are seeking a highly experienced Senior Application Support Engineer with strong expertise in .NET technologies, SQL Server, SSIS, and retail domain applications. This is a critical, highly technical role focused on ensuring the stability, performance, and reliability of customer-facing and backend business applications.

The ideal candidate will be responsible for Level 2/Level 3 production support, troubleshooting complex application issues, maintaining database systems, automating operational processes, and collaborating with both technical and business teams to resolve customer‑impacting issues in a fast‑paced production environment.

Key Responsibilities

• Provide L2/L3 production and application support for enterprise retail applications
• Troubleshoot and resolve customer‑facing software and system issues across proprietary and third‑party platforms
• Monitor production systems, interfaces, batch jobs, and application performance
• Support and maintain .NET applications, SQL Server databases, and SSIS packages
• Perform root cause analysis and implement preventive solutions for recurring incidents
• Utilize PowerShell, T‑SQL, and automation tools to optimize backend processes and operational workflows
• Develop internal support utilities and tools to improve operational efficiency
• Work closely with technical and non‑technical teams to resolve production and customer‑impacting issues
• Participate in production release engineering and deployment support on a rotating basis
• Analyze SQL queries and perform performance tuning and optimization
• Ensure adherence to SLA commitments and ITIL support processes
• Create and maintain technical documentation, support procedures, and knowledge base articles

Required Skills

• 10+ years of experience in Application Support / Production Support / Systems Analysis
• Strong hands‑on experience with:
• SQL Server, T‑SQL
• SSIS (SQL Server Integration Services)
• PowerShell scripting
• Experience supporting enterprise retail or eCommerce applications
• Strong database troubleshooting and query optimization skills
• Experience with incident management, defect resolution, and release support
• Hands‑on experience with batch processing and job monitoring
• Familiarity with ticketing and monitoring tools such as ServiceNow, JIRA, or Remedy
• Excellent troubleshooting and problem‑solving skills in high‑pressure environments
• Strong technical writing and documentation skills
• Excellent communication and cross‑functional collaboration abilities

Preferred Qualifications

• Experience with CRM platforms or customer support systems
• Experience with automation tools and AI‑assisted operational workflows
• Knowledge of POS systems, merchandising, warehouse management, inventory, or order management systems
• Experience working in Agile and ITIL‑based support environments
• Exposure to Azure or cloud‑based infrastructure environments

Domain Experience

• Retail domain experience is required
• Experience supporting customer‑facing retail applications, eCommerce platforms, warehouse operations, or order processing systems is highly preferred

Education

Bachelor’s degree in Computer Science, Information Technology, or related field.

Required Skills

• ETL : Strong experience in designing and managing ETL processes for data integration and transformation.
• SQL: Advanced proficiency in writing complex queries, stored procedures, performance tuning, and database optimization.
• SSIS: Hands‑on expertise in building, deploying, and maintaining SSIS packages for data workflows.
• Good to Have
• Angular /React
• MAS500 (Sage MAS 500 ERP): Familiarity with ERP systems, particularly MAS500, for financial and operational data handling.
• EDI (Electronic Data Interchange): Experience in implementing and supporting EDI transactions for business‑to‑business communication.
• Seeburger: Knowledge of Seeburger middleware for integration and EDI solutions.