Apply now »

Mainframe Assembler Developer

At Capgemini Engineering, the world leader in engineering services, we bring together a global team of engineers, scientists, and architects to help the world’s most innovative companies unleash their potential. From autonomous cars to life-saving robots, our digital and software technology experts think outside the box as they provide unique R&D and engineering services across all industries. Join us for a career full of opportunities. Where you can make a difference. Where no two days are the same.

Your Role

As a Mainframe Assembler Developer, you will work on complex system and application programming assignments using Assembly language, JCL, VSAM, HLASM macros, and REXX. You will collaborate with customer-facing teams to resolve issues, deliver high‑quality code, and contribute to continuous improvement across mainframe environments.

In This Role, You Will

  • Design and develop solutions using core Assembly language and understand/modify ASM macros.
  • Analyze customer logs and dumps to identify and resolve issues.
  • Work closely with the L2 support team to understand customer-reported scenarios and provide proactive solutions.
  • Deliver high‑quality code for new development as well as fixes for customer issues.
  • Perform active debugging to identify the root cause of problems.
  • Collaborate with cross-functional teams to communicate progress and ensure timely closure of tasks.
  • Stay updated on z/OS mainframe technologies, tools, and best practices.
  • (Preferred) Work in Agile/Scrum methodology and contribute effectively in Agile ceremonies.
  • (Preferred) Utilize knowledge of C language, z/OS system macros, TLS, SSL, and related technologies.

Your Profile

  • 5–9 years of experience in mainframe application/system programming.
  • Strong hands-on skills in Assembly language, JCL, VSAM, HLASM macros, and REXX.
  • Ability to troubleshoot complex system issues using logs and dumps.
  • Good collaboration and communication skills to work with cross-functional and customer-facing teams.
  • Experience in Agile environments is preferred.
  • Additional exposure to C, TLS/SSL, and z/OS system-level macros is a plus.

What You’ll Love About Working Here

  • Flexible work culture that supports work–life balance.
  • An inclusive environment with opportunities to learn, grow, and upskill in emerging technologies.
  • Global collaboration and exposure to large-scale enterprise projects.
  • Opportunity to work with industry-leading mainframe experts and cutting‑edge engineering practices.

 

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.
Ref. code:  383777
Posted on:  11 Mar 2026
Experience Level:  Experienced Professionals
Contract Type:  Permanent
Location: 

Kolkata (ex Calcutta), IN

Brand:  Capgemini Engineering
Professional Community:  Software Engineering

Apply now »