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- Tasks: Design and modernise legacy mainframe systems for a leading enterprise.
- Company: Join a world-renowned client transforming their core systems.
- Benefits: Enjoy opportunities for collaboration, innovation, and impactful work.
- Why this job: Make a lasting impact on systems that affect millions of lives.
- Qualifications: Experience in mainframe engineering and a strong design mindset required.
- Other info: Be part of a multi-year modernisation programme with a focus on future-ready solutions.
The predicted salary is between 48000 - 84000 £ per year.
Design the Future of Legacy Infrastructure
We are hiring on behalf of a world-renowned enterprise client undergoing a strategic transformation of its core systems. This is a unique opportunity for a Mainframe Engineer with a strong design mindset to work at the heart of a multi-year modernisation programme.
Your focus? Helping reimagine and reshape decades-old mainframe platforms into clean, elegant, and future-ready systems - all while ensuring operational integrity at scale.
If you’re as passionate about how software is structured as you are about what it does, this is your chance to bring lasting impact to an organisation that touches millions of lives.
- Collaborate with architects, analysts, and developers to design and implement structured, modern solutions on the IBM z/OS mainframe.
- Refactor and optimise legacy applications—focusing on clarity, modularity, and maintainability as part of a broader modernisation roadmap.
- Play a lead role in shaping internal engineering standards for mainframe design patterns, data flows, and application interfaces.
- Support integration with modern APIs, distributed systems, and evolving cloud architecture—bridging the old and new.
- Contribute to tooling and automation to enhance DevOps maturity across the mainframe estate.
If interested, please apply immediately for further details & a confidential discussion.
Senior / Lead Mainframe Engineer - Design-Led | Modernisation employer: GL Global
Contact Detail:
GL Global Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior / Lead Mainframe Engineer - Design-Led | Modernisation
✨Tip Number 1
Familiarise yourself with the latest trends in mainframe modernisation. Understanding how legacy systems can be transformed into modern architectures will give you an edge during discussions with our team.
✨Tip Number 2
Showcase your experience with IBM z/OS and any relevant design patterns you've implemented. Be prepared to discuss specific projects where you've successfully refactored or optimised legacy applications.
✨Tip Number 3
Highlight your collaborative skills, especially in working with architects and developers. We value teamwork, so be ready to share examples of how you've contributed to cross-functional projects.
✨Tip Number 4
Demonstrate your understanding of DevOps practices and tooling. Discuss any automation tools you've used to enhance processes, as this aligns with our goal of improving DevOps maturity across the mainframe estate.
We think you need these skills to ace Senior / Lead Mainframe Engineer - Design-Led | Modernisation
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with mainframe systems, particularly IBM z/OS. Emphasise any design-led projects you've worked on and your role in modernisation efforts.
Craft a Compelling Cover Letter: In your cover letter, express your passion for transforming legacy systems. Discuss specific examples of how you've contributed to similar projects and your approach to ensuring operational integrity.
Showcase Collaboration Skills: Since the role involves working with architects, analysts, and developers, include examples in your application that demonstrate your ability to collaborate effectively in a team environment.
Highlight Technical Proficiency: Detail your technical skills related to mainframe engineering, including any experience with APIs, cloud architecture, and DevOps practices. This will show your readiness to bridge old and new technologies.
How to prepare for a job interview at GL Global
✨Showcase Your Design Mindset
Since the role focuses on modernising legacy systems, be prepared to discuss your design philosophy. Share examples of how you've approached system architecture and design in previous projects, highlighting your ability to create clean and maintainable solutions.
✨Demonstrate Technical Proficiency
Familiarise yourself with IBM z/OS and any relevant mainframe technologies. Be ready to answer technical questions and possibly solve problems on the spot. Showing that you can bridge old and new technologies will impress the interviewers.
✨Emphasise Collaboration Skills
This position requires working closely with architects, analysts, and developers. Prepare to discuss your experience in collaborative environments and how you’ve contributed to team success in past projects, especially in a transformation context.
✨Prepare for Questions on Modernisation Strategies
Expect questions about your approach to refactoring and optimising legacy applications. Think about specific strategies you've used in the past and be ready to explain how you would apply them in this new role to enhance operational integrity.
