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Mainframe performance and capacity analyst – banking

London
Salt Digital Recruitment
Analyst
Posted: 1h ago
Offer description

Contract Role: Mainframe Performance and Capacity Analyst – Banking – Inside IR35

Location: UK (Remote) or Denmark (Hybrid – 10 days/month onsite)

Rate: £475-£575/day (Inside IR35, via umbrella)

Duration: 6 months+

Start: ASAP

Client: Global Consultancy, End Client in the Banking Sector

Salt is working with a global consultancy delivering high-level mainframe optimisation services to a major banking client. We are recruiting an experienced Mainframe Performance and Capacity Analyst to support proactive tuning and capacity planning across critical z/OS environments.

This role sits within a Performance Competence Centre, with responsibility for system and application performance diagnostics, workload forecasting, and tooling optimisation.


Key Responsibilities:

* Monitor, analyse, and tune mainframe system and application performance
* Conduct capacity forecasting and support infrastructure provisioning
* Lead performance data analysis and reporting using SMF, RMF, WLM
* Develop and maintain custom tooling and dashboards
* Liaise with technical teams to prevent capacity-related issues
* Create documentation, reports, and performance improvement plans


Essential Skills:

* 7+ years’ experience in mainframe performance tuning and capacity planning
* Strong knowledge of SMF, RMF, WLM, and performance management tooling (APA, MXG, SAS)
* Ability to analyse batch and online application performance
* Comfortable working in high-availability banking environments


Desirable Skills:

* Experience with ELK stack or in-house dashboarding tools
* Coding experience in REXX, Python, Assembler, or PL/1
* Familiarity with z/OS system internals and workload behaviours


Working Model & Compliance:

* UK-based contractors: Fully remote. Must work via umbrella (inside IR35)
* Denmark-based contractors: Hybrid model, 10 days/month onsite
* Background checks to be completed post-onboarding

*Rates depend on experience and client requirements


Job Information

Job Reference: JO-2506-354316
Salary: £450 - £575 per day + Inside IR35
Salary per: day
Job Duration: 6-12 months
Job Start Date: 28/07/2025
Job Industries: Telecoms
Job Locations: Greater London
Job Types: Contract


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