Senior Mainframe Systems Programmer - z/OS

ABOUT US

Ensono is a hybrid IT services provider that sees a world in transformation. We understand the world of business has become more complex, layered, and interdependent because we’re enabling the IT infrastructure for that transformation. Our clients are some of the most innovative and forward-thinking companies in the world and we help keep their businesses thriving. With nearly 50 years of experience, we optimize and modernize IT infrastructure by amplifying the power of mainframes and mid-range servers with the agility of cloud. Check us out at

JOB TITLE

Senior Mainframe Systems Programmer – zOS and ISV

Position Summary

Provide premium zOS system programming support and services to Ensono mainframe clients.

The successful candidate will perform mainframe zOS operating System upgrades ( and using SMPE and zOSMF workflows, ISV product upgrades/maintenance apply for zOS compatibility to support our customers’ mainframe environments and ensure contractual obligations are met. The individual will need to work with vendor personnel to achieve timely upgrades of zOS, ISV products before end of support.

JOB DESCRIPTION

As a recognized leader in IT infrastructure management, Ensono is dedicated to cultivating talented individuals with unique skillsets who know how to dream big and build bigger. We are looking for passionate and self-motivated candidates to apply for our Senior/ Expert Mainframe Systems Programmer open position!

This position is a full-time, entry level job role. We prefer candidates be located within Bangalore or Chennai or Pune.

Job Duties AND RESPONSIBILITIES

Perform standard system programming activities like configuration, installation & maintenance using SMP/E, and vendor software installations in the mainframe environment.

Support other team: storage management, performance tuning, capacity planning, security, networking, and operating procedures from zOS perspective.

Work with Mainframe System Programmers staff across tracks to enhance the mainframe environment.

Participate in software(ISVs and zOS) deployments and various support functions as defined by the department manager.

Possess interpersonal skills needed to foster good relations with business and development users.

Assist team members to solve problems, make innovative improvements and make decisions.

Identify and implement system and process improvements in the z/OS environment Work with

application support teams and other internal customers to facilitate business initiatives.

Review and Approve documentation of system software products including usage instructions, configuration notes, test plans, details of customizations necessary for our environment, as well as process and procedure guides.

• Mandatory Skills:
• Expertise in performing SMP/E and Non-SMPE Installation of ISV products)
• Operating system z/OS upgrades workflow execution.
• JES3/JES2 initialization
• Sysplex and config management(good to have)
• Fluent in JCL and IBM Utilities (IEBGENER/IEBCOPY/AMASPZAP/DFDSS)
• ISPF/TSO and other basic
• Basic knowledge of REXX/CLIST
• Designing project plan(upgrades, maintenance, decom) with task list for all stakeholders and communicating the timelines with delivery and customer.
• Formulate roadmaps with all pre-requisites to achieve an project completion.
• Technically guide a team of highly motivated system programmers with technical working sessions.
• MIPS Optimization.
• Product Migration on z/OS.

Required Skills

• 8+ years of professional work experience as a Mainframe System Programmer in zOS & ISVs.
• Possess the drive and self-motivation to sharpen current skills while also learning something new
• Intermediate proficiency in MS Office (Excel, PowerPoint, Project, and Word) or MAC equivalent products
• Possess a conceptual or practical understanding of or have a willingness to learn various technologies including but not limited to Mainframe, Open Systems, Networking, etc.
• Strong focus on efficiency, performance, and cost optimization across the enterprise mainframe environment.
• Hands-on experience with MIPS optimization initiatives, including CPU, workload, and capacity tuning.
• Proven exposure to optimization programs working with cross-functional teams (Production Control/Batch, DB, MQ, Storage, HW/SW, Capacity, and Application teams).
• Ability to use data-driven insights and performance metrics to improve mainframe consumption, billing, and cost transparency.
• Working knowledge of product migrations and their impact from an optimization perspective.
• Experience contributing to technical optimization strategies with measurable outcomes.
• Strong mindset for continuous improvement, innovation, and operational excellence in mainframe optimization.

QUALIFICATIONS

Desired candidates will have a degree and/or equivalent experience.

Mainframe Certifications / Badges is an added advantage.

ADDITIONAL INFORMATION

The incumbent of this position will report to the Mainframe Optimize / Mainframe Academy Leader.

Specific needs may vary based on business necessity. The qualifications and responsibilities outlined should be used as guidance regarding required and preferred skills.

Our Values

Whether providing unprecedented solutions for clients or collaborating with each other to make unexpected connections, our teams are to exhibit these core values across every endeavor:

Honesty – We’re transparent and accountable

Reliability – We deliver on our promises

Collaboration – We thrive as a team

Curiosity – We relentlessly innovate on behalf of our clients

Passion – We love what we do and share our enthusiasm

Shift Timing- 1:30 PM to 10:30 PM

We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to caste, colour, creed, religion, gender, gender identity, sexual orientation, age, disability, HIV status, or any other status protected by law. Candidates with disabilities who require accommodations during the recruitment process are encouraged to contact our Talent Acquisition team to place a request.

JR

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