Mainframe Consultant in London

Mainframe Consultant in London

London Full-Time 60000 - 80000 Β£ / year (est.) No working from home possible
Gazelle Global

At a Glance

  • Tasks: Support enterprise transformation by engineering and optimising modern Java workloads in CICS environments.
  • Company: Join a leading financial services firm driving innovation in mainframe technology.
  • Benefits: Attractive salary, comprehensive benefits, and opportunities for professional growth.
  • Other info: Dynamic role with potential for significant impact on the future of financial services.
  • Why this job: Be part of a critical project modernising banking infrastructure with cutting-edge technologies.
  • Qualifications: Expertise in CICS, z/OS, and Java workload management required.

The predicted salary is between 60000 - 80000 Β£ per year.

We're looking for an experienced Mainframe Middleware Infrastructure Engineer with strong expertise across CICS, z/OS and IBM WebSphere Liberty to support a major enterprise transformation programme. This role focuses on the engineering, configuration, optimisation and support of modern Java workloads running within CICS Liberty environments.

Key Skills & Experience

  • Deep knowledge of CICS systems engineering and z/OS infrastructure
  • CICS region setup, configuration and JVM server management
  • IBM WebSphere Liberty administration and runtime configuration
  • Java workload management, JVM tuning and performance optimisation
  • RACF, TLS, certificates, keyrings and security integration
  • REST/API enablement and modern integration practices
  • Problem determination using dumps, traces, logs and SMF data
  • Capacity planning, resilience, HA/DR and operational support
  • Experience with CI/CD pipelines, automated deployments and release processes
  • Monitoring, observability and middleware operational management

This is an excellent opportunity to work on critical banking and financial services infrastructure whilst helping modernise core mainframe platforms with contemporary Java and API technologies.

Mainframe Consultant in London employer: Gazelle Global

Join a forward-thinking organisation that values innovation and expertise in the financial services sector. As a Mainframe Consultant, you will be part of a collaborative work culture that prioritises employee growth through continuous learning and development opportunities. Located in a dynamic environment, we offer competitive benefits and the chance to contribute to transformative projects that modernise critical banking infrastructure.

Gazelle Global

Contact Details:

Gazelle Global Recruitment Team

We think you need these skills to ace Mainframe Consultant in London

CICS Systems Engineering
z/OS Infrastructure
CICS Region Setup
JVM Server Management
IBM WebSphere Liberty Administration
Java Workload Management
JVM Tuning