Senior Mainframe Performance & Scalability Lead (Contract)

ARM (Advanced Resource Managers); Greater London; Remote; GBP 120,000 - 221,000; Part time

Job summary

ARM (Advanced Resource Managers) is seeking a senior Mainframe Performance & Scalability SME for a 6-month Inside IR35 contract in London or fully remote. You will assess scalability, diagnose performance issues, and lead discussions with client architects, platform engineers, and operations SMEs on a pension administration platform running on IBM Mainframe tech.

The role focuses on Db2 for z/OS performance, CICS workload, mainframe capacity, batch processing, and observability, with potential

Qualifications

• Deep practical experience investigating Db2 for z/OS performance and scalability, including stats, runstats, access paths, and buffer pools.

Responsibilities

• Lead technical conversations with client architects, platform engineers and operations SMEs.

Skills

Db2 for z/OS performance & scalability

CICS performance

Mainframe capacity & workload mgmt

TLS/cryptography/IBM Z

Observability & diagnostics

Tools

OMEGAMON

MainView/BMC AMI

RMF/SMF

Db2 performance tooling

CICS monitoring

Dynatrace

Datadog

Mainframe APM/telemetry platforms

Job description

ARM (Advanced Resource Managers) is seeking a senior Mainframe Performance & Scalability SME for a 6-month Inside IR35 contract in London or fully remote. You will assess scalability, diagnose performance issues, and lead discussions with client architects, platform engineers, and operations SMEs on a pension administration platform running on IBM Mainframe tech.

The role focuses on Db2 for z/OS performance, CICS workload, mainframe capacity, batch processing, and observability, with potential