At a Glance
- Tasks: Support and enhance critical banking systems using IBM z/OS and High Level Assembler.
- Company: Join a major financial services client with a focus on innovation.
- Benefits: Hybrid working, competitive pay, and opportunities for professional growth.
- Other info: Dynamic team environment with opportunities for career advancement.
- Why this job: Make an impact in a vital role supporting enterprise banking platforms.
- Qualifications: Experience with IBM HLASM, CICS, and strong problem-solving skills required.
The predicted salary is between 50000 - 60000 £ per year.
DURATION: 3 months initial contract
LOCATION: Edinburgh, Manchester, Leeds OR Halifax (2 days to local office)
WORKING HOURS: Monday to Friday, standard business hours plus participation in a 24/7 on-call rota
ONSITE REQUIREMENTS: Hybrid working with 2 days per week onsite at local office
LEGAL RIGHT TO WORK: Candidates must have the legal right to work in the UK. Sponsorship is not available for this role.
Atrium Global is supporting a major financial services client in the appointment of an experienced Mainframe Assembler Engineer to join a critical heritage engineering team supporting enterprise banking platforms and core transactional systems.
JOB OVERVIEW
We are seeking a highly experienced Mainframe Assembler Engineer with strong IBM z/OS expertise to support and enhance mission‑critical banking systems. The role combines operational BAU support, incident resolution, technical change delivery and platform modernisation across a complex mainframe estate. You will work across HLASM, CICS, IBM MQ and core z/OS technologies, supporting high‑availability systems and contributing to transformation initiatives within a regulated enterprise environment. This role includes participation in out-of-hours deployments and a 24/7 on‑call support rota.
RESPONSIBILITIES
- Provide technical support for IBM High Level Assembler applications within a z/OS environment
- Support and troubleshoot CICS and IBM MQ integrated services
- Perform root cause analysis for incidents, abends and performance issues across production and non‑production environments
- Develop, maintain and enhance Assembler code for planned releases and platform improvements
- Maintain and optimise JCL batch processing and transaction performance
- Support upgrades, migrations and infrastructure changes across the mainframe estate
- Collaborate with COBOL, DB2 and infrastructure teams to deliver integrated technical solutions
- Participate in release validation, deployment readiness and production support activities
- Ensure adherence to ITIL governance, operational standards and risk controls
- Contribute to technical documentation, design reviews and continuous improvement initiatives
REQUIREMENTS
- Proven experience supporting and developing IBM High Level Assembler (HLASM) on z/OS
- Strong hands‑on knowledge of CICS, IBM MQ, JCL and VSAM
- Experience troubleshooting incidents and abends within enterprise mainframe environments
- Familiarity with tools such as Abend-Aid, IPCS, Omegamon or File‑Aid
- Experience supporting both BAU operations and project delivery activities
- Understanding of COBOL and DB2 integration within mainframe platforms
- Knowledge of MQ security, TLS and operational governance controls
- Experience with automation or scripting tools such as REXX, Shell, Ansible or UrbanCode
- Strong analytical and problem‑solving skills within high‑availability environments
- Excellent communication and stakeholder collaboration skills
NICE TO HAVE
- Experience within financial services or highly regulated enterprise environments
- Exposure to modernisation or transformation programmes involving legacy systems
- Previous experience working within large‑scale enterprise banking platforms
Mainframe Assembler Engineer (z/OS) – Hybrid 3mo Contract in Manchester employer: Atrium (EMEA)
Atrium Global is an exceptional employer, offering a dynamic work environment that fosters collaboration and innovation within the financial services sector. With a strong focus on employee growth, you will have access to continuous learning opportunities while working alongside experienced professionals in a hybrid setting that promotes work-life balance. The company's commitment to supporting critical banking systems ensures that your contributions will have a meaningful impact on the industry, making this role both rewarding and significant.
StudySmarter Expert Advice🤫
We think this is how you could land Mainframe Assembler Engineer (z/OS) – Hybrid 3mo Contract in Manchester
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with professionals on LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Prepare for interviews by practising common questions related to Mainframe Assembler Engineering. Brush up on your technical skills and be ready to discuss your experience with IBM z/OS, CICS, and other relevant technologies.
✨Tip Number 3
Showcase your problem-solving skills! Be prepared to share specific examples of how you've tackled incidents or performance issues in past roles. This will demonstrate your hands-on experience and analytical abilities.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, we love seeing candidates who are proactive about their job search!
We think you need these skills to ace Mainframe Assembler Engineer (z/OS) – Hybrid 3mo Contract in Manchester
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Mainframe Assembler Engineer role. Highlight your experience with IBM z/OS, HLASM, and any relevant projects you've worked on. We want to see how your skills match what we're looking for!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you're passionate about this role and how your background in financial services or enterprise environments makes you a great fit. Keep it concise but impactful!
Showcase Your Problem-Solving Skills:In your application, don’t forget to mention specific examples of how you've tackled incidents or performance issues in past roles. We love seeing those analytical skills in action, especially in high-availability environments!
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy – just a few clicks and you’re done!
How to prepare for a job interview at Atrium (EMEA)
✨Know Your Mainframe Inside Out
Make sure you brush up on your knowledge of IBM z/OS, HLASM, CICS, and IBM MQ. Be ready to discuss specific projects where you've used these technologies, as well as any challenges you faced and how you overcame them.
✨Showcase Your Problem-Solving Skills
Prepare to share examples of incidents you've resolved in a mainframe environment. Highlight your analytical skills and how you approach troubleshooting, especially with tools like Abend-Aid or IPCS. This will demonstrate your hands-on experience and ability to think on your feet.
✨Understand the Business Context
Since this role is within financial services, it’s crucial to understand the impact of your work on banking systems. Familiarise yourself with the regulatory environment and be prepared to discuss how you ensure compliance and operational governance in your previous roles.
✨Be Ready for Technical Questions
Expect technical questions that test your knowledge of JCL batch processing, performance optimisation, and integration with COBOL and DB2. Practise explaining complex concepts in simple terms, as communication is key in collaborative environments.
