mainframe developer designs, develops, maintains, and supports applications that run on mainframe computers, most commonly IBM mainframes. These systems are widely used by banks, insurance companies, governments, airlines, and large enterprises to process high-volume, mission-critical transactions.

Key Responsibilities
Develop and maintain business applications on the mainframe.
Write and modify programs in COBOL, PL/I, or Assembler.
Create and optimize JCL (Job Control Language) jobs.
Work with databases such as IBM Db2, IMS, or VSAM.
Debug production issues and improve application performance.
Support batch processing and online transaction systems.
Collaborate with business analysts, testers, and system administrators.

Common Technologies
Programming Languages: COBOL, PL/I, Assembler
Job Control: JCL
Databases: IBM Db2, IMS, VSAM
Transaction Processing: CICS
Utilities: SORT, IDCAMS, DFSORT
Version Control: Endevor, Changeman, Git (in contemporary environments)
Operating System: z/OS

Required Skills
Strong knowledge of COBOL programming




Understanding of JCL and batch processing
Experience with Db2 and SQL
Knowledge of CICS online applications
Debugging and problem-solving skills
Familiarity with SDLC and software testing

Industries That Hire Mainframe Developers
Banking and financial services
Insurance
Healthcare
Government
Retail
Airlines and transportation

Career Path
Junior Mainframe Developer
Mainframe Developer
Senior Mainframe Developer
Mainframe Technical Lead
Mainframe Architect
Mainframe Modernization Specialist

Despite the growth of cloud computing, mainframes continue to power many critical enterprise systems. Because experienced specialists are retiring and fewer recent developers enter the field, skilled mainframe developers often remain in high demand and can command competitive salaries, especially in industries that rely on legacy enterprise systems.Role & responsibilities

Preferred candidate profile

Perks and benefits

📌 Mainframe Developer Bengaluru
🏢 ALTIMETRIK
📍 Bengaluru