Mainframe Developer

Altimetrik; Bengaluru; On-site; INR 1,200,000 - 1,600,000; Full time

Job summary

Altimetrik Bengaluru is seeking a Mainframe Developer to design, code, test and support enterprise applications running on IBM z/OS. You will work with COBOL, JCL, CICS and Db2 in a high-volume environment.

Collaborate with business analysts, testers and sysadmins to optimize batch and online processing, fix production issues and drive performance improvements while preserving reliable legacy systems. Strong problem solving, SDLC knowledge and the ability to work in a fast-paced, client-facing

Qualifications

• Strong COBOL programming skills required.
• Solid understanding of JCL and batch processing.
• Experience with Db2 and SQL.
• Knowledge of CICS online applications.

Responsibilities

• Develop and maintain mainframe applications.
• Write and modify programs in COBOL, PL/I, or Assembler.
• Create and optimize JCL jobs.
• Work with Db2/IMS/VSAM databases.
• Debug production issues and improve performance.
• Support batch processing and online transactions.
• Collaborate with business analysts, testers and sysadmins.

Skills

COBOL

JCL

Db2/SQL

CICS

Debugging

SDLC testing

Tools

Endevor

Changeman

Git

IDCAMS

DFSORT

Job description

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 modern 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

1. Junior Mainframe Developer
2. Mainframe Developer
3. Senior Mainframe Developer
4. Mainframe Technical Lead
5. Mainframe Architect
6. Mainframe Modernization Specialist

Despite the growth of cloud computing, mainframes continue to power many critical enterprise systems. Because experienced professionals are retiring and fewer new 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