Location: India
Job Type: Full Time/Lateral
Status: Active
Posted: 2026-04-15 10:11:51
Role Overview
The Assembler Engineer is responsible for the development, maintenance, and support of mission critical mainframe applications that underpin bank‿s core banking systems. This role focuses on low level system programming, performance optimization, and ensuring the reliability and efficiency of high volume transaction processing environments.
Key Responsibilities
Develop, enhance, and maintain applications written in Assembler
Analyze existing legacy codebases and implement improvements or fixes aligned with business requirements.
Support batch and online transaction processing systems, ensuring high availability and performance.
Troubleshoot production issues, perform root cause analysis, and implement sustainable fixes.
Collaborate with business analysts, testers, and infrastructure teams to deliver robust solutions.
Participate in code reviews, documentation, and adherence to secure coding and banking compliance standards.
Optimize system performance, memory usage, and processing efficiency within mainframe environments.
Technology Stack
Mainframe Platform: IBM z/OS
Programming Languages: Assembler, COBOL, JCL
Transaction Processing: CICS
Database Systems: IBM Db2, IMS
Tools & Utilities: TSO/ISPF, Endevor, SDSF
Version Control & DevOps: Git (in hybrid environments), CI/CD pipelines (where applicable) (optional)
Key Skills & Experience
Strong experience in assembler programming within enterprise mainframe environments
Solid understanding of z/OS internals, memory management, and system level debugging
Experience with CICS transaction processing and batch job scheduling
Familiarity with banking or financial services systems (highly desirable)
Strong analytical and problem solving skills with attention to detail
Ability to work in a collaborative, cross functional team environment
Cobol