IT Application Support Engineer (Mainframe)

Functieomschrijving

We are looking for an experienced IT Application Support Engineer to join our team, ensuring the stability, performance, and continuous improvement of critical applications within a banking environment.

This role is focused on production support, monitoring, maintenance, release management, and technical application support in a Mainframe ecosystem.

The ideal candidate will bring strong analytical skills, a proactive mindset, and previous experience working in complex production environments.

You will play a key role in ensuring service stability, incident resolution, application monitoring, release coordination, and continuous improvement of operational processes.

Key Responsibilities

Production Support & Monitoring

  • Provide technical and functional support for critical business applications.
  • Monitor batch processing activities and application workflows.
  • Ensure the smooth operation of production and non-production environments.
  • Investigate and resolve technical incidents and production issues.
  • Perform root cause analysis and implement preventive actions.
  • Monitor technical and functional application performance, ensuring optimal user experience.
  • Recover files and manage data restoration activities when required.

Environment & Infrastructure Management

  • Manage the opening and closing of UAT environments.
  • Execute scripts and environment parameterization requests.
  • Perform data refresh activities, including database copy and masking from Production to UAT environments.
  • Support application integrations and operational processes.

Release & Deployment Management

  • Coordinate application releases across multiple environments.
  • Compile, package, and deploy software releases.
  • Prepare and coordinate production migrations with Planning, DBA, and Production teams.
  • Maintain non-regression environments and ensure alignment across environments.
  • Prepare GUI packages and deployment artifacts.

Continuous Improvement

  • Develop and maintain operational documentation and procedures.
  • Automate repetitive tasks and improve monitoring capabilities.
  • Contribute to service reliability and operational excellence initiatives.
  • Support change management activities and functional enhancement requests.
Profiel

Required Qualifications

  • Bachelor's Degree in Computer Science, Information Technology, Engineering, or a related field.
  • 6+ years of professional experience in Application Support, Production Support, IT Operations, or a similar role.
  • Previous experience supporting applications in complex enterprise environments.
  • Strong analytical and troubleshooting skills.
  • Ability to understand business requirements and translate them into technical solutions.
  • Experience with SDLC methodologies and software lifecycle management.
  • Experience creating technical documentation, operational procedures, and process flows.
  • Excellent communication skills and ability to work within international teams.
  • Fluent English (written and spoken).

Mandatory Technical Skills

  • IBM Mainframe (z/OS)
  • TSO
  • COBOL
  • CICS
  • JCL
  • DB2
  • SQL
  • OPC Scheduler
  • Unix Shell Scripting
  • Oracle SQL
  • File Transfer Technologies (FTP, SFTP, MQ, CFT)
Over Inetum

Inetum is a global leader in IT services, dedicated to delivering innovative solutions to our clients. We are committed to fostering a dynamic, inclusive, and diverse work environment where creativity and collaboration thrive. Present in 19 countries, we are a team of more than 28,000 professionals worldwide.

Country

Portugal

Location

Lisbon

Contract Type

Open-ended contract