Senior Systems Administrator - Contractor (Remote)

Job Description

Job Title: Senior Systems Administrator

Company: Oases, part of Valsoft Corporation

Location: UK (Remote)

Type: Contractor (Full-Time)

Reporting to: Director of Technology

Oases are seeking a highly skilled and hands-on System Administrator to maintain, troubleshoot, and optimize our existing IT infrastructure. The ideal candidate will have extensive experience with Windows Remote Desktop Services (RDS), Linux, and Oracle, ensuring the reliability and performance of critical business systems. Experience with AWS networking is a plus.

About Oases:

Oases, part of the Valsoft Corporation is a leading provider of Aviation Engineering and Maintenance Software. We are committed to helping customers in every part of the aviation industry to realise the benefits that come from digitising processes in the areas of MRO efficiency and logistics, compliance, safety, and financial management.

To do this, we create software that links every stage of continuing airworthiness, planning, production, line maintenance, material management, commercial and warranty management.

Our job is to simplify the planning, control and monitoring of MRO operations by enabling the rapid adoption of paperless processes and digital efficiencies. 

In so doing, we connect logistics teams and engineers: End-to-end, office to hangar, service to billing, works order to completion, and every interaction in between.

The Role:

This position will involve administering and optimizing Windows RDS, Linux servers, and Oracle databases, managing AWS networking, enforcing security best practices, supporting system upgrades, and collaborating with IT teams for seamless operations.

Key Responsibilities:

• Administer, monitor, and troubleshoot Windows Remote Desktop Services (RDS) environments, ensuring optimal performance and security.
• Manage and maintain Linux-based servers, including patching, scripting, and performance tuning.
• Support and optimize Oracle databases and related infrastructure, ensuring high availability and efficiency.
• Perform proactive monitoring, performance tuning, and troubleshooting across all systems.
• Implement and enforce security best practices for Windows, Linux, and Oracle environments.
• Manage AWS networking configurations, including VPCs, security groups, and connectivity.
• Assist in system upgrades, migrations, and disaster recovery planning.
• Document system configurations, processes, and troubleshooting guides.
• Work closely with other IT teams to ensure seamless integration and operation of all infrastructure components.

About You:

• Proven experience as a System Administrator in a hands-on role.
• Strong expertise in Windows Server administration, particularly Remote Desktop Services (RDS).
• Proficiency in Linux administration (Red Hat, Ubuntu, or CentOS preferred).
• Experience managing and troubleshooting Oracle databases and infrastructure.
• Knowledge of networking concepts, including TCP/IP, DNS, VPNs, and firewalls.
• Familiarity with AWS networking (VPC, Route 53, security groups, etc.) is a plus.
• Strong scripting abilities in PowerShell, Bash, or Python.
• Experience with monitoring tools and proactive system management.
• Ability to work independently and manage multiple priorities in a fast-paced environment.
• Experience with Active Directory, Group Policy, and Identity Management.
• Familiarity with virtualization technologies (VMware, Hyper-V).
• Knowledge of backup and disaster recovery strategies.

For more information about Nexera, please visit our website at www.oases.aero.

We thank all applicants for their interest; however, only those candidates selected for an interview will be contacted.

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