Mainframe Performance & Scalability SME

Vacancy detailMainframe Performance & Scalability SMEOpen Rate GBPHybrid WORKINGLocation: Central London, Greater London – United Kingdom Type: ContractWe're looking for a highly experienced Mainframe Performance & Scalability SME to support a short-term consulting assignment, helping assess the resilience, scalability and future performance of a critical enterprise platform. You'll lead a structured technical investigation into an established IBM mainframe environment, using evidence-based analysis to identify performance constraints, optimisation opportunities and future scalability risks. This is not a traditional BAU support role — you'll be working as a trusted technical advisor, collaborating with senior architects and engineering teams to deliver meaningful recommendations that influence future technology decisions. Key ResponsibilitiesLead technical investigations into mainframe performance, scalability and capacity challenges. Analyse Db2 and CICS workloads to identify bottlenecks, inefficiencies and optimisation opportunities. Review database growth, SQL performance, access paths, indexing strategies and data management approaches. Assess mainframe capacity, workload management, batch processing and MSU utilisation. Investigate performance impacts from infrastructure changes, including IBM Z migrations and cryptographic processing. Correlate business transactions with application, database, CPU and I/O behaviour to identify root causes. Review monitoring and observability capabilities across the platform. Assess performance testing approaches and validate scalability assumptions. Produce clear findings and prioritised recommendations for senior technical stakeholders. About YouYou'll have extensive experience across:IBM Z mainframe environments and performance optimisation. Db2 for z/OS performance analysis, including SQL tuning, access paths, RUNSTATS, REORG, locking and workload behaviour.CICS transaction processing and application performance analysis. Mainframe capacity management, including RMF, SMF, WLM and MSU utilisation. Batch and online workload analysis, identifying performance constraints and scalability risks. Mainframe monitoring and diagnostics tooling such as OMEGAMON, MainView, BMC AMI, RMF/SMF or equivalent. Performance testing, workload modelling and capacity assurance. Consulting SkillsAlongside deep technical expertise, you'll be comfortable with:Leading technical discussions with architects, engineers and senior stakeholders. Challenging assumptions and validating findings through evidence. Turning complex technical analysis into clear, actionable recommendations. Working independently within a consulting environment. Communicating effectively with both technical and non-technical audiences. If you're interested in discussing this further, feel free to reach out. Reference: AMC|CLI|MPSCPostcode: EC#coliApply for this vacancyYour CV will be sent to the selected department. At no time will your CV be sent outside of Anson McCade without your authorisation.*Mandatory field. Your name*Your surname*Your email address*I confirm I currently have the right to take full time employment at the location for which I am submitting my CVPlease state the locations where you currently have the right to take full time employmentAttach a file (Word or PDF only accepted)MessagePrior to submission of this form, the user acknowledges and accepts Anson McCade's Terms and Conditions of Use + Privacy Policy + Data Protection Compliance Statement*

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