Mainframe Developer

Quantum Technologies LLC; Alpharetta (GA); On-site; USD 110,000 - 150,000; Full time

Job summary

Quantum Technologies LLC seeks an experienced Senior Mainframe Developer to support enterprise mainframe applications. The role focuses on COBOL, CICS, and Assembler, with responsibilities spanning development, maintenance, production support, and troubleshooting in high-availability environments.

The ideal candidate has 5–8 years of mainframe experience, strong analytical and debugging skills, and excellent collaboration and communication abilities, working within Agile/Scrum teams.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 5–8 years of mainframe development experience.
• Strong analytical, debugging, and problem-solving abilities.
• Experience supporting business-critical production applications.
• Excellent communication and collaboration skills.

Responsibilities

• Develop, enhance, test, and maintain enterprise mainframe applications using COBOL, CICS, and Assembler.
• Provide Tier III production support and troubleshoot complex application and system issues.
• Perform root-cause analysis and implement permanent solutions to recurring production issues.
• Collaborate with cross-functional teams to resolve technical issues and ensure application stability.

Skills

Mainframe development

Analytical thinking

Debugging

Problem solving

Communication

Team collaboration

Agile/Scrum

Education

Bachelor's degree in Computer Science/Information Technology

Tools

COBOL

CICS

Assembler

JCL

DB2

SQL

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Work Authorization:US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, Other

Job Description:

We are seeking an experienced Senior Mainframe Developer with strong hands-on expertise in COBOL, CICS, and Assembler to support enterprise mainframe applications. The ideal candidate will be responsible for application development, enhancements, maintenance, production support, and troubleshooting complex technical issues in high-availability environments.

Required Technical Skills:

• Strong hands-on experience in Mainframe application development using COBOL.
• Expertise in CICS (Customer Information Control System).
• Experience with IBM Mainframe Assembler.
• Strong knowledge of JCL (Job Control Language).
• Experience with DB2 database, SQL queries, and stored procedures.
• Hands-on experience with mainframe debugging, troubleshooting, and root-cause analysis.
• Experience in application maintenance, enhancements, and production fixes.
• Strong understanding of mainframe batch processing and online transaction processing.
• Experience with code deployment, testing, and implementation procedures.
• Knowledge of mainframe performance monitoring and optimization.
• Experience providing Tier III production support in high-availability environments.
• Experience working in Agile/Scrum development environments.
• Develop, enhance, test, and maintain enterprise mainframe applications using COBOL, CICS, and Assembler.
• Provide Tier III production support and troubleshoot complex application and system issues.
• Perform detailed root-cause analysis and implement permanent solutions to recurring production issues.
• Analyze existing application code and identify opportunities for performance improvements and optimization.
• Implement code and configuration changes following established development and release management processes.
• Prepare and execute testing plans, implementation plans, and backout procedures.
• Support batch processing, online transactions, and critical business applications.
• Collaborate with cross-functional teams to resolve technical issues and ensure application stability.
• Participate in Agile/Scrum ceremonies, including daily stand-ups, sprint planning, and team discussions.
• Maintain technical documentation, incident records, operational procedures, and support runbooks.
• Address code review feedback and follow established coding standards.
• Provide regular project status updates and communicate production issues effectively.

Required Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 5–8 years of relevant mainframe development experience.
• Strong analytical, debugging, and problem-solving abilities.
• Experience supporting business-critical production applications.
• Excellent communication and collaboration skills.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.