Z/OS Mainframe EngineerHybrid Working - London - 2 days a week on site.Financial ServicesLorien''s leading banking client is looking for a Z/OS Mainframe Engineer to join the expanding team.The person will support the test environments to enable delivery of features to mobile/online banking customers. The person will have hands-on experience with CICS webservices, ZOS Connect, DB2, SQL, SOAP, WSDL along with understanding of AWS Services.This role is based in London.This role will be Via Umbrella.Working in a Hybrid Model of 2 days a week on site.Key Responsibilities:Provide expert support and timely resolution of environment issues focusing on Mainframe systems and related infrastructure.Work on test data support requirement for the teams within Digital ChannelsCollaborate closely with DataPower and AWS teams to understand integration points and troubleshoot cross-platform dependencies.Monitor AWS cloud resources including CloudWatch for logging and alerting, DynamoDB for database management, and AWS Lambda for serverless compute tasks related to project workflows.Implement best practices for environment stability, performance tuning, and security compliance.Produce detailed technical documentation, status reports, and issue logs for ongoing support and knowledge sharing.Communicate effectively with cross-functional teams including developers, infrastructure engineers, and project managers to ensure timely resolution of issues and alignment on priorities.Work on automation ..... full job details .....