Northdoor plc
Linux & AIX Consultant
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Reports to: IBM Practice Lead & Operations Manager Location: London, UK (Hybrid Working) Salary: Competitive + Bonus + Benefits Package
About Northdoor
For over 30 years, Northdoor plc has been a trusted partner to enterprises, helping them navigate complex technology landscapes. We specialise in the "hard stuff" – managing and securing critical data, applications, and infrastructure for clients in highly regulated sectors like finance and insurance.
Our Managed Services practice is the core of our client relationships, with core Cloud services are the engine for our future growth. We are looking for a true technical expert to be the heart of that practice, leading our technical strategy and ensuring we deliver secure, scalable, and impactful solutions.
The Role
We are seeking an experienced IBM AIX and Linux Consultant to provide expert technical consulting services to our clients. This role involves designing, implementing, and supporting enterprise Unix/Linux environments with a focus on IBM Power Systems, Ansible and ensuring high availability, performance, and security.
Key Responsibilities
Technical Delivery
- Design, build, and implement IBM AIX solutions on Power Systems
- Perform system installations, upgrades, migrations, and decommissioning activities
- Configure and manage logical partitioning (LPARs), virtual I/O servers (VIOS), and shared processor pools
- Implement and support high availability solutions including PowerHA/HACMP clustering
- Manage storage integration including SAN fabric zoning, multipathing (MPIO), and volume management (LVM)
- Perform system performance tuning, capacity planning, and health checks
- Implement backup and recovery solutions using tools such as TSM/Storage Protect, Commvault, or Veeam
- Configure and maintain system security including user access controls, patch management, and compliance requirements
- Design, build, and implement Linux solutions. Experience of Red Hat is preferable
- Create and manage Ansible playbooks
- Implement & manage Red Hat Openshift Container Platform
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Infrastructure Management
- Monitor and maintain system health, availability, and performance across enterprise environments
- Troubleshoot complex technical issues and provide root cause analysis
- Create and maintain comprehensive technical documentation including design documents, runbooks, and procedures
- Develop and maintain automation scripts using shell scripting, Python, Ansible, or similar tools
- Plan and execute scheduled maintenance windows with minimal business disruption
Client Engagement
- Act as trusted technical advisor to clients on Unix/Linux infrastructure matters
- Participate in client workshops and technical design sessions
- Provide knowledge transfer and training to client teams
- Translate business requirements into technical solutions
- Contribute to pre-sales activities including solution design and proposal development
Project Work
- Lead or participate in infrastructure refresh projects and data centre migrations
- Manage project deliverables, timelines, and client expectations
- Coordinate with third-party vendors (IBM, Red Hat, storage vendors, network teams)
- Conduct project handovers and post-implementation reviews
Managed Service & Support
- Plan and carry out planned maintenance activity for clients
- Prepared to work occasional out of hours
- Be part of an on-call rota with the rest of the team to cover out of hours support calls and incidents
About You: Your Experience & Skills
Extensive Experience: You have a demonstrable track record (ideally 10+ years) in Enterprise IT environments, with a significant focus on designing, deploying, and transforming critical IT systems using AIX and Linux.
Technical knowledge
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- Strong knowledge of IBM Power Systems hardware (Power8, Power9, Power10, Power11)
- Proven experience with PowerVM virtualization and VIOS management
- Solid understanding of storage technologies (SAN, NAS, LVM, multipathing)
- Experience with networking concepts including TCP/IP, VLANs, and routing
- Strong knowledge of Linux and automation
Client-Facing Excellence
- You are a superb communicator, comfortable leading technical workshops with clients, explaining complex concepts to senior stakeholders, and building trust.
Problem-Solver
- You thrive on solving complex, multi-faceted technical challenges.
Commercial Acumen
- You understand the "why" behind the "what" and can design solutions that meet a client's commercial needs and budget.
Passionate about Technology
- You stay ahead of industry trends and are passionate about leveraging cutting-edge cloud technology to deliver real business value.
Certifications (Highly Valued)
- IBM certifications (AIX Administrator, PowerVM Administrator)
- Red Hat Certified Engineer (RHCE) or similar Linux certifications
- Experience with PowerHA/HACMP clustering solutions
- Knowledge of IBM Spectrum Scale (GPFS), NFS, or Samba
- Familiarity with configuration management tools (Ansible, Puppet, Chef)
- Understanding of ITIL service management practices
- Experience with IBM i (AS/400) environments
- Knowledge of containerization (Docker, Kubernetes/OpenShift)
What We Offer
- The chance to work in a high-performing team on complex transformation projects for major clients.
- A collaborative and supportive team environment.
- Ongoing training and professional development.
- A competitive salary, bonus scheme, and comprehensive benefits.
Northdoor is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
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