Mainframe Developer
Deloitte
2 - 5 years
Chennai
Posted: 18/03/2026
Job Description
Deloitte India is hiring for Mainframe Modernization developers, Interested candidates can apply on the link
Your potential, unleashed.
Indias impact on the global economy has increased at an exponential rate and Deloitte presents an opportunity to unleash and realize your potential amongst cutting edge leaders, and organizations shaping the future of the region, and indeed, the world beyond.
At Deloitte, your whole self to work, every day. Combine that with our drive to propel with purpose and you have the perfect playground to collaborate, innovate, grow, and make an impact that matters.
The Team
Deloittes Technology & Transformation practice can help you uncover and unlock the value buried deep inside vast amounts of data. Our global network provides strategic guidance and implementation services to help companies manage data from disparate sources and convert it into accurate, actionable information that can support fact-driven decision-making and generate an insight-driven advantage.
Our practice addresses the continuum of opportunities in business intelligence & visualization, data management, performance management and next-generation analytics and technologies, including big data, cloud, cognitive and machine learning.
Roles and Responsibilities
Job Title: Senior Mainframe Consultant
Experience Level: 812 Years(Sr con) / 12+ years (Manager)
Location: Chennai
Employment Type: Full-Time
Department: IT / Application Development
Reports To: Mainframe Delivery Manager / Technical Lead
Job Summary:
We are seeking a highly experienced and detail-oriented Senior Mainframe Consultant to lead and support mission-critical applications built on IBM Mainframe technologies. The ideal candidate will have deep expertise in COBOL, DB2, JCL, VSAM, and CICS, and will be responsible for designing, developing, maintaining, and optimizing legacy systems while contributing to modernization initiatives.
Key Responsibilities:
Technical Leadership & Development
- Lead the design, development, and maintenance of complex mainframe applications using COBOL, DB2, JCL, VSAM, and CICS.
- Analyze business requirements and translate them into high-quality technical solutions.
- Perform code reviews and ensure adherence to best practices and coding standards.
- Optimize performance of batch and online programs.
System Analysis & Support
- Conduct impact analysis, root cause analysis, and provide production support for critical applications.
- Troubleshoot and resolve issues in batch jobs, online transactions, and database queries.
- Monitor and tune DB2 queries and CICS transactions for optimal performance.
Project Management & Collaboration
- Collaborate with cross-functional teams including business analysts, QA, DevOps, and infrastructure teams.
- Participate in Agile/Scrum ceremonies and contribute to sprint planning and retrospectives.
- Mentor junior developers and provide technical guidance.
Documentation & Compliance
- Prepare and maintain technical documentation including design specs, test plans, and user manuals.
- Ensure compliance with internal security policies and external regulatory requirements.
Required Skills & Qualifications:
Technical Expertise
- COBOL: Advanced proficiency in structured and object-oriented COBOL programming.
- DB2: Strong experience in writing and optimizing SQL queries, stored procedures, and database design.
- JCL: Expertise in job control language for batch processing and scheduling.
- VSAM: Deep understanding of file structures, access methods, and performance tuning.
- CICS: Experience in developing and maintaining online transaction processing systems.
- Assembler/AS400 good to know but not a must
- IMS/IDMS good to know but not a must
Tools & Platforms
- IBM z/OS, TSO/ISPF, Abend-AID, File-AID, ChangeMan/Endevor, Control-M, RACF.
- Familiarity with DevOps tools and CI/CD pipelines for mainframe environments is a plus.
Soft Skills
- Excellent analytical, problem-solving, and communication skills.
- Ability to work independently and manage multiple priorities.
- Strong leadership and mentoring capabilities.
Preferred Qualifications:
- Bachelors or Masters degree in Computer Science, Information Technology, or related field.
- Experience in mainframe modernization projects (e.g., API enablement, cloud integration).
- Exposure to Agile methodologies and tools like Jira, Confluence.
Benefits:
- Competitive salary and performance bonuses.
- Health insurance, retirement plans, and paid time off.
- Opportunities for training, certification, and career advancement.
How youll grow
Connect for impact
Our exceptional team of professionals across the globe are solving some of the worlds most complex business problems, as well as directly supporting our communities, the planet, and each other. Know more in our Global Impact Report and our India Impact Report.
Empower to lead
You can be a leader irrespective of your career level. Our colleagues are characterized by their ability to inspire, support, and provide opportunities for people to deliver their best and grow both as professionals and human beings. Know more about Deloitte and our One Young World partnership.
Inclusion for all
At Deloitte, people are valued and respected for who they are and are trusted to add value to their clients, teams and communities in a way that reflects their own unique capabilities. Know more about everyday steps that you can take to be more inclusive. At Deloitte, we believe in the unique skills, attitude and potential each and every one of us brings to the table to make an impact that matters.
Drive your career
At Deloitte, you are encouraged to take ownership of your career. We recognize there is no one size fits all career path, and global, cross-business mobility and up / re-skilling are all within the range of possibilities to shape a unique and fulfilling career. Know more about Life at Deloitte.
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