Mainframe Architect

JR United Kingdom; London; On-site; GBP 80,000 - 120,000; Full time

Job summary

An innovative global leader in IT infrastructure is searching for a skilled Mainframe Architect to transform legacy systems and accelerate cloud adoption. This pivotal role involves delivering comprehensive technical solutions, guiding project lifecycles, and mentoring teams. Ideal candidates will possess deep expertise in mainframe database systems and a customer-centric mindset. The position offers opportunities for career development, collaboration with Fortune 100 clients, and a diverse workplace culture that values innovation and inclusion. Join this forward-thinking organization and make a significant impact in the tech landscape.

Benefits

Career development opportunities

Access to industry-recognized certifications

Diverse and inclusive workplace culture

Global collaboration opportunities

Benefits for every stage of life

Qualifications

• 12+ years in enterprise IT with expertise in mainframe database systems.
• Strong understanding of z/OS environments and performance tuning.

Responsibilities

• Serve as subject matter expert for mainframe database architectures.
• Lead modernization initiatives and guide cross-functional teams.

Skills

IBM DB2

IMS

Adabas

Cincom Supra

Datacom

z/OS

JCL

COBOL

SQL

Problem-solving

Tools

AWS

Azure

GCP

Job description

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A global leader in mission-critical IT infrastructure services is seeking an experienced and innovativeMainframe Architect. This organization specializes in designing, managing, and modernizing enterprise-grade technology environments across industries, helping clients transform legacy systems and accelerate cloud adoption.

Position Overview

The Mainframe Architect plays a pivotal role in delivering end-to-end technical solutions for complex enterprise environments. Acting as the bridge between stakeholders and delivery teams, the architect guides the full project lifecycle—from strategic planning to technical execution—ensuring solutions are delivered on time, within budget, and aligned with client objectives.

In this role, the architect leads engagements with enterprise clients, gathering business requirements, defining solution architectures, and driving the modernization of mainframe systems. The position also involves mentoring teams, collaborating with multi-disciplinary experts, and managing integration with cloud platforms and modern technologies.

Key Responsibilities

• Serve as the subject matter expert for mainframe database architectures, providing leadership in solution design and technical delivery.
• Collaborate with clients to define success criteria, gather inputs, and translate business requirements into scalable technical solutions.
• Design, implement, and optimize mainframe databases and subsystems, ensuring high availability, performance, and security.
• Lead modernization initiatives, enabling integration with cloud services and unlocking value from existing mainframe data assets.
• Guide cross-functional teams throughout the solution lifecycle, including external vendors and client governance stakeholders.
• Provide insights on emerging technologies and best practices, supporting continuous improvement and innovation.

Required Skills and Qualifications

• 12+ years of experience in enterprise IT, with deep expertise in mainframe database systems such as IBM DB2, IMS, Adabas, Cincom Supra, or Datacom.
• Strong understanding of z/OS environments and technologies including JCL, JES, RACF/ACF2, CICS, COBOL, PL/I, SQL, and Natural.
• Proven experience in database performance tuning, capacity planning, and high availability configuration.
• Ability to articulate the value of modern database features in achieving business outcomes.
• Excellent problem-solving, analytical, and decision-making skills.
• Strong communication and presentation capabilities, with the ability to explain complex technical concepts to diverse audiences.

Preferred Experience

• Exposure to hybrid cloud environments and cloud service providers (AWS, Azure, GCP).
• Experience with Agile frameworks such as Scrum, SAFe, or Kanban.
• Familiarity with modern software development practices and DevOps culture.
• Advanced certifications in key technologies or cloud platforms.
• Understanding of enterprise architecture design methodologies and tools.

Candidate Profile

Ideal candidates will possess a customer-centric mindset and a passion for innovation. A continuous learning attitude, openness to collaboration, and a commitment to diversity and inclusion are essential. This position is well-suited for professionals seeking growth into roles such as enterprise architect, chief architect, or distinguished engineer.

What’s Offered

• Career development opportunities with access to industry-recognized certifications (e.g., AWS, Microsoft, Google Cloud).
• Work with Fortune 100 clients and cutting-edge technologies.
• A diverse, inclusive workplace culture that values your unique background and perspectives.
• Benefits designed to support employees through every stage of life.
• Opportunities for global collaboration, travel, and vertical or lateral career advancement.