Senior Mainframe Performance & Scalability Strategist

Consult; Greater London; Hybrid; GBP 166,000 - 240,000; Full time

Job summary

Consult in London is seeking a senior consultant to assess a pension administration platform on IBM mainframe. The project focuses on performance and scalability under growth, with hybrid work and 2-3 days on-site.

You will analyze Db2, CICS, capacity, batch processing, and observability, challenge assumptions, and lead discussions with client architects and operations SMEs. This is an inside IR35 6-month contract.

Qualifications

• Extensive Db2 for z/OS performance and scalability experience.
• Strong CICS performance and Db2 workload knowledge.
• Mainframe capacity planning and workload management expertise.
• Experience with TLS/cryptography on IBM Z workflows.
• Observability, diagnostics, and mainframe APM familiarity.
• Ability to challenge assumptions and lead client workshops.

Responsibilities

• Lead focused assessment for a major UK financial services client.
• Diagnose scalability risks from incomplete production evidence.
• Deliver concrete findings and actionable recommendations.
• Engage with architects, platform engineers and operations SMEs.
• Present clear, evidence-based conclusions and options.

Skills

Db2 for z/OS performance

CICS performance

Mainframe capacity planning

Observability & diagnostics

Performance testing

Consulting & stakeholder management

Tools

OMEGAMON

MainView

BMC AMI

RMF/SMF

CICS monitoring tools

Dynatrace

Datadog

DB2 performance tooling

Job description

Consult in London is seeking a senior consultant to assess a pension administration platform on IBM mainframe. The project focuses on performance and scalability under growth, with hybrid work and 2-3 days on-site.

You will analyze Db2, CICS, capacity, batch processing, and observability, challenge assumptions, and lead discussions with client architects and operations SMEs. This is an inside IR35 6-month contract.