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 InformationJob Reference: JO-2506-354316Salary: £450 - £575 per day + Inside IR35Salary per: dayJob Duration: 6-12 monthsJob Start Date: 28/07/2025Job Industries: TelecomsJob Locations: Greater LondonJob Types: Contract