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Systems Architect
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Operational Systems Architect
Permanent - Hybrid (Reading)
About the Role
We're partnering with an innovative technology business delivering mission-critical operational systems to customers across the UK and internationally. They are looking for an experienced Operational Systems Architect to take ownership of the design, resilience, and ongoing performance of complex IT infrastructure supporting live operational environments.
This is a hands-on senior engineering position where you'll be responsible for ensuring systems remain secure, highly available, and fully recoverable. Working across infrastructure, databases, networking, and systems integration, you'll play a key role in maintaining business-critical platforms while driving continuous improvements to reliability, monitoring, and operational standards.
The role offers a mix of office-based and customer-facing work, with regular travel to client sites and opportunities to contribute to the delivery of large-scale, high-availability technology solutions.
Key Responsibilities
- Design and maintain scalable, secure, and resilient system architectures across internal platforms and customer deployments.
- Develop, implement, and regularly test backup, restore, and disaster recovery strategies to ensure business continuity.
- Support and optimize operational databases, data pipelines, and storage platforms, maintaining data integrity and system performance.
- Deploy, configure, and manage Windows and Linux server environments alongside networking and storage infrastructure.
- Implement proactive monitoring, alerting, and performance management to minimize downtime and improve operational visibility.
- Provide technical support for live customer environments, including deployments, upgrades, fault resolution, and ongoing maintenance.
- Lead complex troubleshooting and root cause analysis across infrastructure, networking, applications, and integrated systems.
- Maintain strong security controls, access management, and governance processes while supporting industry best practice.
- Produce clear technical documentation including architecture diagrams, operational procedures, and disaster recovery plans.
- Drive continuous improvement initiatives to enhance system resilience, operational efficiency, and deployment standards.
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Key Skills & Experience
- Proven experience in a senior Infrastructure Engineer, Systems Engineer, Systems Architect, or Operational Technology role.
- Strong knowledge of Windows and/or Linux server administration.
- Solid networking expertise including TCP/IP, VLANs, routing, and firewall technologies.
- Experience designing and supporting backup, recovery, and disaster recovery solutions.
- Strong understanding of high-availability environments and business-critical operational systems.
- Experience managing databases, storage platforms, and data reliability.
- Excellent troubleshooting skills across complex, integrated technical environments.
- Experience with infrastructure monitoring, alerting, and performance management tools.
- Understanding of security best practices, access control, and secure infrastructure design.
- Excellent communication skills with the ability to work independently and collaborate across technical teams.
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Desirable Experience
- Experience within operational technology (OT), industrial, or critical infrastructure environments.
- Exposure to cloud platforms such as Azure or AWS.
- Familiarity with Microsoft 365 and Entra ID.
- Knowledge of cybersecurity frameworks and secure system architecture.
- Eligibility to obtain UK Security Clearance (SC).
This is an excellent opportunity to join a growing technology organization where you'll have genuine ownership of critical systems, influence technical strategy, and work on complex engineering challenges in a collaborative environment.
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