Accelyst

Accelyst is an innovative AI Consultancy delivering AI-driven, secure, and scalable technology solutions that help organizations accelerate digital transformation and maximize business value.

Job Summary

Accelyst is seeking a Mid-Level .NET Developer with Mainframe experience to support mission-critical enterprise applications in a hybrid legacy and modern technology environment. The role focuses on application development, modernization, system integration, reporting, ETL, database development, and production support.

Key Responsibilities

• Analyze and maintain legacy Easytrieve/EasyPlus applications running on IBM Mainframe platforms.
• Design, develop, test, and deploy application enhancements and defect fixes using C# and .NET/.NET Core.
• Support JCL, CICS, batch processing, and mainframe application workflows.
• Develop and maintain SQL Server, SSIS, and SSRS solutions.
• Write and optimize complex T-SQL queries, Stored Procedures, views, and database objects.
• Develop reports, extracts, ETL processes, and data transformation solutions.
• Support application modernization and legacy system migration initiatives.
• Troubleshoot production issues and perform root-cause analysis while maintaining system stability and data integrity.
• Collaborate with Business Analysts, DBAs, Project Managers, and development teams to deliver technical solutions.
• Participate in code reviews, testing, documentation, and Agile development activities.
• Support integration with distributed platforms, APIs, and secure data exchange processes.

Required Qualifications

• Bachelor''s degree in Computer Science, Information Technology, or related field, or equivalent experience.
• 3–7 years of professional software development experience.
• 3+ years of IBM Mainframe development experience.
• Strong experience with C#, .NET/.NET Core, SQL Server, and T-SQL.
• Experience with Easytrieve/EasyPlus, JCL, and CICS.
• Experience with SSIS and SSRS.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent written and verbal communication skills.

Preferred Technical Skills

• IBM Mainframe
• Easytrieve / EasyPlus
• JCL
• CICS
• ROSCOE / TSO
• C# / .NET / .NET Core
• Entity Framework Core
• SQL Server / T-SQL
• SSIS / SSRS
• Visual Studio
• Git
• Azure DevOps Server
• SSMS
• REST / SOAP APIs
• Microsoft Azure
• EDI / HIPAA Transactions
• Agile/Scrum

Preferred Qualifications

• Experience modernizing or migrating legacy mainframe applications.
• Experience working with CMS 835 and 837 healthcare claim files and ANSI ASC X12 HIPAA transaction sets.
• Experience with Alabama Medicaid data specifications and companion guides.
• Experience integrating mainframe applications with modern distributed platforms and APIs.
• Knowledge of ETL, data transformation, secure file transfer, and enterprise reporting.
• Experience working in healthcare, insurance, government, financial services, or other regulated environments.

Accelyst is an Equal Opportunity Employer. We value diversity and are committed to creating an inclusive workplace for all employees.