Mainframe Senior Support Engineer

MainframeMaster; Paço de Arcos; Hybrid; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Hybrid work model

Competitive compensation

Career development opportunities

Access to global projects

Job summary

DXC Technology in Portugal is seeking a Mainframe Senior Support Engineer to join the Mainframe Services team. You will deliver high-quality operational services for enterprise Mainframe environments, ensuring stability, availability, and performance.

You will collaborate with customer-facing teams, technical specialists, and service delivery to minimize disruptions and drive operational excellence. The role requires hands-on Mainframe experience (5+ years) in z/OS, CICS, DB2, and related

Qualifications

• Bachelor's degree in a related field is preferred.
• Minimum 5 years of hands-on Mainframe experience in a senior support or engineering role.
• Strong ITIL/ITSM knowledge and enterprise IT operations experience.

Responsibilities

• Collaborate with Technology Leads and service delivery teams to ensure operational excellence.
• Own incident management and root-cause analysis for complex issues.
• Maintain technical documentation and runbooks to support operations.

Skills

z/OS

CICS

DB2

Networking

Storage

Automation

Education

Bachelor's degree in Computer Science / Computer Engineering / Information Systems

Job description

Job Description:DXC Technology is a leading global technology services provider, helping organizations modernize their IT, optimize data architectures, and accelerate business innovation.In Portugal, DXC combines local expertise with global capabilities, supporting clients through highly skilled teams, innovative solutions, and a strong culture of collaboration, learning, and continuous improvement.We are currently looking for a Mainframe Senior Support Engineer to join our growing Mainframe Services team in Portugal.The Mainframe Senior Support Engineer is responsible for delivering high-quality operational services to enterprise customers, ensuring the stability, availability, and performance of critical Mainframe environments.The successful candidate will work closely with customer-facing teams, technical specialists, and service delivery organizations to minimize service disruption, drive operational excellence, and maintain high levels of customer satisfaction.

Key Responsibilities

• Collaborate with Technology Leads, Service Delivery teams, and customer support organizations.
• Develop and maintain a strong understanding of customer environments, business priorities, and operational processes.
• Manage incidents in accordance with ITIL best practices and service level commitments.
• Perform advanced troubleshooting and root cause analysis for complex technical issues.
• Maintain and enhance technical documentation and operational procedures.
• Participate in change management activities, advisory boards, and implementation planning.
• Support problem management and continuous service improvement initiatives.
• Contribute to technical projects and platform enhancements.
• Deliver technical guidance, knowledge sharing sessions, and mentoring where appropriate.
• Ensure compliance with internal quality standards, security requirements, and operational procedures.

Required Skills & Experience

• Strong expertise in at least one of the following Mainframe domains:
  • z/OS System Programming
  • CICS
  • DB2
  • Network
  • Storage
  • Automation
• Minimum 5 years of hands-on Mainframe experience in a senior support or engineering role.
• Solid understanding of Mainframe infrastructure and operations.
• Experience working in enterprise IT operations and infrastructure support environments.
• Good knowledge of ITSM and ITIL processes.
• Degree in Computer Science, Computer Engineering, Information Systems, or a related discipline is preferred.
• Strong communication skills in English, both written and verbal.
• Customer-oriented mindset with strong analytical and problem-solving skills.

Why Join DXC Portugal?

• Competitive compensation package.
• Hybrid working model with flexibility to balance work and personal life.
• Career development opportunities within an international organization.
• Access to challenging projects supporting global customers.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.