Principal Mainframe Architect

What success looks like in this role:

• Own and drive the enterprise mainframe architecture vision strategy and roadmap aligned with business goals
• Lead and govern large-scale application modernization initiatives including re-hosting re-platforming refactoring and re-architecting.
• Act as the highest-level technical authority for IBM z/OS and mainframe-centered solutions
• Lead and govern mainframe modernization and transformation initiatives including hybrid cloud integration API enablement and DevOps adoption
• Define and enforce architecture standards reference architectures and best practices across mainframe platforms
• Provide architectural oversight for capacity planning performance scalability resilience and cost optimization
• Partner with CIO/CTO Enterprise Architecture and senior stakeholders to influence technology and investment decisions
• Ensure architecture compliance with security regulatory audit and risk management requirements
• Evaluate and recommend tools platforms and vendor solutions to improve efficiency and innovation
• Serve as an escalation authority for critical production and systemic issues ensuring long-term architectural fixes
• Provide technical leadership design reviews and risk mitigation guidance across delivery programs.
• Mentor architects and senior engineers setting standards for engineering excellence and technical governance.

#LI-SN1

You will be successful in this role if you have:

• Bachelors or Masters degree in Computer Science Engineering or equivalent experience.
• Expert-level knowledge of IBM Mainframe architecture including z Systems z/OS Sysplex and GDPS
• Extensive experience with CICS IMS DB2 MQ VSAM and high-volume transaction systems
• Strong background in mainframe application architecture (COBOL PL/I Assembler JCL)
• Strong knowledge of legacy mainframe stack (Fujitsu GS21)
• Proven expertise in performance engineering workload management (WLM) and capacity planning
• Deep understanding of mainframe security (RACF / ACF2 / Top Secret) and compliance frameworks
• Experience integrating mainframe workloads with distributed systems APIs and cloud platforms (Mainframe AWS / Azure / GCP)

• Exposure to DevOps CI/CD and automation in mainframe environments
• Strong knowledge of DR BC planning high availability and data resiliency architecture.
• Strong architectural and strategic thinking capability
• Excellent communication skills including executive-level stakeholder engagement
• Ability to influence and lead across large globally distributed teams
• Customer-focused approach aligned with Unisys delivery and transformation objectives.
• 15 years of IT experience with 10 years in large-scale mainframe environments
• Previous experience as a Mainframe Architect Enterprise Architect or Principal Engineer
• Proven track record leading enterprise-scale modernization or transformation programs
• Experience working in regulated industries (banking insurance government healthcare preferred)
• Comfortable operating at both strategic and hands-on architectural levels
• IBM certifications (z/OS z Systems Architecture DB2 CICS) preferred.

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