Senior Mainframe Modernization Consultant - AWS Pro Services

Amazon Inc.; Madrid; On-site; EUR 90,000 - 130,000; Full time

Job summary

Amazon Web Services (AWS) Professional Services is seeking a Senior Delivery Consultant to lead mainframe migration and modernization projects across enterprise environments. You will assess estates, design migration waves, and guide customers through rehost, refactor, and cloud-native transitions using AWS tools.

Fluent English required; travel up to 50%. Strong collaboration with architects and stakeholders; experience with COBOL, PL/I, JCL, CICS, IMS, DB2, VSAM is a must.

Qualifications

• Bachelor's degree in Computer Science, Engineering or a related field, or equivalent professional or military experience.
• 5+ years of hands-on experience with mainframe technologies (e.g., z/OS, COBOL, PL/I, JCL, CICS, IMS, Db2, VSAM)
• Experience delivering mainframe migration or modernization projects (e.g., re-host, re-platform, refactor, replace)
• Experience in solution design and architecture, including cloud (AWS or equivalent), systems, networking and operating systems
• Software development experience with object-oriented languages (e.g., Java, C#)
• Speak, write, and read fluently in English

Responsibilities

• Lead the assessment and discovery of customer mainframe estates, including application portfolio analysis and modernization readiness evaluation.
• Design and implement modernization solutions on AWS—replatforming, refactoring, and automated code transformation approaches.
• Provide deep technical guidance on mainframe technologies and AWS equivalents throughout project delivery.
• Collaborate with customer architects, development teams, and stakeholders to define migration waves, workloads, and cutover risk.
• Act as trusted advisor on mainframe modernization trends, including AI-assisted code transformation and testing strategies.
• Share knowledge through mentoring, training, and creating reusable modernization playbooks and reference architectures.

Skills

Mainframe

AWS ProServe

Migration design

Java/C#

Stakeholder mgmt

Education

Bachelor's degree in CS or related

Tools

AWS Transform

AWS Mainframe Modernization

Blu Age

Rocket Enterprise Server

Job description

Amazon Web Services (AWS) Professional Services is seeking a Senior Delivery Consultant to lead mainframe migration and modernization projects across enterprise environments. You will assess estates, design migration waves, and guide customers through rehost, refactor, and cloud-native transitions using AWS tools.

Fluent English required; travel up to 50%. Strong collaboration with architects and stakeholders; experience with COBOL, PL/I, JCL, CICS, IMS, DB2, VSAM is a must.