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Ascendion

Mainframe Developer

Chester
Posted about 23 hours ago
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Job Title: Mainframe Developer

Location: Chester, UK
Job Type: 3/Day WFO

Job Description:

We are seeking a seasoned Mainframe Developer with strong expertise in IBM DB2 and core mainframe technologies. The role involves designing, developing, testing, and maintaining high-performance mainframe applications using COBOL, IMS, and z/OS. The ideal candidate will also manage and optimize data with IBM DB2 and promptly troubleshoot production issues to ensure system reliability.

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I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

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Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

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Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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About Us:

Ascendion is a global, leading provider of AI-first software engineering services, delivering transformative solutions across North America, APAC, and Europe. We are headquartered in New Jersey. We combine technology and talent to deliver tech debt relief, improve engineering productivity solutions, and accelerate time to value, driving our clients’ digital journeys with efficiency and velocity. Guided by our “Engineering to the power of AI” [EngineeringAI] methodology, we integrate AI into software engineering, enterprise operations, and talent orchestration, to address critical challenges of trust, speed, and capital. For more information, please go to www.ascendion.com.

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Skills

Mainframe Development
IBM DB2
COBOL
IMS
z/OS
Troubleshooting
Application Design
Application Development
Testing
Maintenance
Data Management
System Reliability
Performance Optimization

Location

Chester, England, United Kingdom

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