zOS Software Developer

Introduction

At IBM Software, we transform client challenges into solutions. Building the world’s leading AI-powered, cloud-native products that shape the future of business and society. Our legacy of innovation creates endless opportunities for IBMers to learn, grow, and make an impact on a global scale. Working in Software means joining a team fueled by curiosity and collaboration. You’ll work with diverse technologies, partners, and industries to design, develop, and deliver solutions that power digital transformation. With a culture that values innovation, growth, and continuous learning, IBM Software places you at the heart of IBM’s product and technology landscape. Here, you’ll have the tools and opportunities to advance your career while creating software that changes the world.

Your role and responsibilities

We are seeking an experienced Technical Engineer to provide advanced technical support for the IBM products.

In this role, you will act as the highest escalation point for complex product issues, working closely with development, system programmers, and customer technical teams to diagnose, analyse and resolve challenging problems in production and test environments. This position requires deep technical expertise in z/OS internals, strong diagnostic capabilities, and proficiency across low‑level languages used in mainframe product development.

· Serve as the L3 technical support escalation point for complex customer‑reported issues on z/OS middleware products.

· Perform advanced problem determination using tools such as z/OS dumps, IPCS, traces, logs, and diagnostic utilities.

· Debug product code written in C, C++, PL/X, and IBM High Level Assembler.

· Collaborate with development teams to reproduce defects, validate fixes, and create code patches where appropriate.

· Analyze system abends, performance issues, storage violations, and resource contention situations.

· Provide technical guidance to Level 1 and Level 2 support teams.

· Work with customers to gather diagnostic data and provide clear and timely updates.

· Contribute to product documentation, technical guides, and internal knowledge bases.

· Participate in on‑call rotations (if applicable).

Required technical and professional expertise

• Strong experience with IBM z/OS operating system internals and middleware concepts.

• Proficiency in: C, C++, PL/X, IBM High Level Assembler (HLASM).

• Ability to interpret and analyze system dumps, SVC dumps, IPCS reports, diagnostic traces and logs.

• Understanding of z/OS subsystems such as JES2/JES3, VTAM, RACF, WLM, USS.

• Experience working with z/OS debugging and profiling tools.

• Excellent analytical and debugging skills with a methodical approach.

• Strong written communication skills, ability to explain complex technical issues clearly and ability to work collaboratively across teams.

Preferred technical and professional experience

• Experience with IBM mainframe middleware (CICS, MQ, DB2, IMS, etc.).

• Knowledge of modern DevOps or build automation tools.

• Customer‑facing support experience.

IBM is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.