Remote IBM Mainframe Architect — Modernisation Lead

0201 CSC Computer Sciences Ltd; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Flexible working arrangements

Pension scheme

Learning & development

Car scheme

Job summary

DXC Technology is seeking an experienced IBM Mainframe Architect to lead architectural direction and modernization of a large mainframe estate in the UK. This role focuses on remediation, secure data movement, and integration with modern platforms while ensuring regulatory compliance.

You will collaborate across infrastructure, application, and data teams, drive architecture decisions, and document migration paths for audit and governance in a global technology environment.

Qualifications

• Extensive experience as an IBM Mainframe Architect or Senior Mainframe Technical Lead.
• Strong knowledge of IBM z/OS, CICS, DB2, RACF, JES3 and Mainframe storage technologies.
• Understanding of COBOL and PL/1 application development within mainframe environments.

Responsibilities

• Lead Legacy Remediation — Identify risks, inefficiencies and modernisation opportunities across mainframe systems.
• Define Architecture & Design — Build robust solutions transitioning from legacy data movement tools to modern, secure, scalable alternatives.
• Modernise Data Integration — Evaluate and replace Attunity-based pipelines with contemporary integration platforms.
• Optimise Performance & Reliability — Ensure high availability and data integrity during and after remediation.
• Strengthen Security & Compliance — Address vulnerabilities in outdated tools; ensure regulatory compliance.
• Collaborate with Stakeholders — Partner with infrastructure, application and data teams to align with business goals.
• Govern & Document — Maintain detailed remediation plans, architectural decisions and migration paths for audit and governance.

Skills

IBM Mainframe

z/OS

CICS

DB2

RACF

JES3

COBOL

PL/1

TOGAF

DevOps

Leadership

AWS

Tools

Attunity (Qlik)

AWS

Job description

DXC Technology is seeking an experienced IBM Mainframe Architect to lead architectural direction and modernization of a large mainframe estate in the UK. This role focuses on remediation, secure data movement, and integration with modern platforms while ensuring regulatory compliance.

You will collaborate across infrastructure, application, and data teams, drive architecture decisions, and document migration paths for audit and governance in a global technology environment.