Role: Unisys Mainframe Engineer (DMS2, ALGOL, Unisys Platform)

Location: Belgium (Hybrid - 1 day/week onsite preferred)

Freelance or Permanent - Long-term engagement

We are seeking a highly experienced Unisys Mainframe Engineer to support and maintain mission-critical banking applications built on the Unisys Mainframe platform (2200, A-Series). This role is essential to maintaining and modernizing core banking systems and will involve working on Legacy applications, performance tuning, DMS2 (Database Management System), and ALGOL/Cobol development.
As part of a collaborative engineering team, you will play a key role in ensuring the stability and ongoing enhancement of the bank's Mainframe infrastructure, directly supporting critical business processes such as payments, customer management, and compliance systems.

• Maintain and enhance Unisys Mainframe applications using ALGOL, Cobol, and DMS2.
• Perform analysis, debugging, corrections, and optimization of existing Unisys systems and applications.
• Design and implement improvements to Mainframe performance and system efficiency.
• Collaborate with banking business units and technical teams to analyze functional requirements and translate them into system-level solutions.
• Participate in code reviews, unit testing, and integration testing of new functionalities.
• Support migration, upgrade, and modernization projects related to Unisys Mainframe systems.
• Work on batch processing, WFL Scripting, and job scheduling related to Unisys platforms.
• Ensure compliance with security, risk, and regulatory requirements in all technical deliverables.
• Provide technical guidance and mentoring to junior engineers and share best practices within the team.

• Strong and proven experience in Unisys Mainframe environments (2200 Series, A-Series).
• Expertise in DMS2 (Database Management System) including database structure design, maintenance, and performance tuning.
• Proficiency in ALGOL programming in Unisys environments (not limited to Cobol).
• Solid experience with Cobol, WFL (Work Flow Language), COMS, and other Unisys development tools.
• Deep understanding of Unisys platform administration, including system performance optimization, troubleshooting, and maintenance.
• Strong understanding of banking processes (eg, payments, accounts, compliance) is a plus.
• Experience with Legacy system modernization projects is highly desirable.
• Familiarity with migration to MicroFocus Cobol or modern platforms is an advantage.
• Excellent problem-solving skills and ability to work independently as well as in a collaborative team.
• Strong communication skills, capable of engaging with both technical and non-technical stakeholders.