TCS is looking for a Mainframe Developer Sr.

(Candidate must be available to work from Guadalajara, Queretaro, Mexico City or Monterrey office at least 2-3 day per week)

Job Summary

We are looking for a Senior Mainframe Developer with 6+ years of experience responsible for designing, developing, enhancing, and supporting complex mainframe applications. Collaborates with business stakeholders, architects, and cross-functional teams to deliver high-quality solutions, troubleshoot production issues, optimize system performance, and support critical business operations in a z/OS environment. Experience with COBOL, JCL, DB2/IDMS, CICS, VSAM, and end-to-end SDLC is required. Relevant technologies align with enterprise mainframe environments documented internally.

Key Responsibilities

- Analyze business requirements and translate them into technical solutions.
- Design, develop, test, and implement mainframe applications and enhancements.
- Create and maintain COBOL programs, JCLs, DB2/IDMS objects, VSAM files, and CICS transactions.
- Perform code reviews and ensure adherence to development standards and best practices.
- Investigate and resolve production incidents, batch failures, and performance issues.
- Support application releases, deployments, and post-implementation validation.
- Coordinate with business users, QA teams, and infrastructure teams during project delivery.




- Participate in application modernization, automation, and process improvement initiatives.
- Prepare technical documentation, impact analysis, and operational procedures.
- Provide technical guidance and mentoring to junior developers.

Required Skills

- Advanced English communication
- 6+ years of Mainframe Development experience.
- Strong knowledge of COBOL, JCL, CICS, DB2/IDMS, VSAM, and z/OS.
- Experience with batch processing, production support, and troubleshooting.
- Knowledge of source control, SDLC, testing, and release management.
- Strong analytical, problem-solving, and communication skills.
- Experience working in Agile/Scrum environments is preferred.

What we offer to you:

- Direct contract
- Benefits above law

Tata Consultancy Services is an equal opportunity employer, our commitment to diversity & inclusion drives our efforts to provide equal opportunity to all candidates who meet our required knowledge & competency needs, irrespective of any socio-economic background, race, color, national origin, religion, sex, gender identity/expression , age, marital status, disability, sexual orientation or any others. We encourage anyone interested to build a career in TCS to participate in our recruitment & selection process.

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📌 Mainframe Developer (Centro)
🏢 Tata Consultancy Services
📍 Centro