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Senior Systems Administrator (Linux)

Bluestaquk•Lincoln / Lincolnshire
Work Mode

onsite

Job Type

full_time

Posted

10/16/2026

Required Technical Skills

DockerKubernetesAWSAzureTerraformCI/CDLinux

Role Overview & Requirements

div class= content-intro p strong About Bluestaq Limited br /strong Bluestaq starts with our people. We are looking for teammates who THINK strategically, SERVE the mission and LEAD from wherever they stand. If you bring curiosity, ownership and a thirst for delivery, we would like to hear from you. /p p Every society runs on invisible systems; Bluestaq is that, for data. Bluestaq Ltd is the UK sovereign subsidiary of Bluestaq LLC (Colorado Springs, USA), and we build the secure data infrastructure that allied operations depend on: mission-critical solutions, flowing through thousands of global users, from ingest to publication in milliseconds, for customers spanning the NATO, Five Eyes and wider allied partners. /p p We are in our formative years in the UK, building on proven foundations in the USA and Australia. That means real opportunity, early: decisions at your level, and colleagues who know their craft and trust you to know yours. /p /div p strong span data-contrast= none span data-ccp-parastyle= heading 1 The Role /span /span /strong span data-ccp-props= { quot;134245418 quot;:true, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559738 quot;:220, quot;335559739 quot;:90} br /span span data-contrast= none You will own specific Linux systems supporting our NATO delivery on AWS, from configuration and monitoring to upgrades and incident response. You will be the specialist the team escalates to when a fault defeats first-line troubleshooting, and you will improve reliability as well as restore it. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:120, quot;335559740 quot;:276} nbsp; /span /p p span data-contrast= none You will mentor Systems Administrators in troubleshooting and operational hygiene. This is an individual contributor role with no direct reports, reporting to the Systems Administration Manager, with a clear technical path to Lead Systems Administrator. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:120, quot;335559740 quot;:276} nbsp; br br /span /p p strong span data-contrast= none span data-ccp-parastyle= heading 1 What You Will Do /span /span /strong span data-ccp-props= { quot;134245418 quot;:true, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559738 quot;:220, quot;335559739 quot;:90} nbsp; /span /p ul li span data-contrast= none Own one or more systems or environments, covering configuration, monitoring and alerting, upgrades and incident response. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Debug difficult faults, including performance problems, resource exhaustion and integration failures, and take each incident from first symptom to a root cause and a remediation plan that holds. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Configure and tune services with secure, hardened defaults, and turn scan output and logs into lasting remediation. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Plan and execute upgrades and changes under change control, with realistic risk assessment and a tested rollback. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Act as the escalation point for Systems Administrator colleagues, mentor them, and document patterns others can reuse in runbooks and standard operating procedures. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Work across engineering, cyber and data teams on cross-functional problems. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Take part in UK operational coverage, including on-call rotation and structured handovers with the US team. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; br br /span /li /ul p strong span data-contrast= none span data-ccp-parastyle= heading 1 What You Bring /span /span /strong span data-ccp-props= { quot;134245418 quot;:true, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559738 quot;:220, quot;335559739 quot;:90} nbsp; /span /p ul li span data-contrast= none Strong hands-on Linux systems administration in complex, secure production environments, with depth in service behaviour, performance tuning and hardened configuration. Experience on Microsoft Azure, VMware vSphere or similar platforms is transferable. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Sound networking fundamentals, including DNS, DHCP, VLANs, firewalls and routing, and hands-on identity and access management across directory services and cloud platforms. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Working experience with automation and infrastructure-as-code tooling such as Ansible, Terraform, Kubernetes, Docker or Packer, and with patching discipline and configuration compliance in an accredited environment. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Curiosity and incident discipline: you diagnose faults under pressure, find the root cause, and record what you found as well as what you fixed. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Experience owning systems, escalating only genuinely novel problems, and mentoring less experienced colleagues deliberately. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Clear written and verbal communication, including when the news is bad, and confident use of ITSM workflows and platforms such as Confluence and Jira. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Judgement with AI tools: applying them where they help, reviewing what they produce and handling sensitive data responsibly. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; br br /span /li /ul p strong span data-contrast= none span data-ccp-parastyle= heading 1 Essential Conditions /span /span /strong span data-ccp-props= { quot;134245418 quot;:true, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559738 quot;:220, quot;335559739 quot;:90} nbsp; /span /p ul li span data-contrast= none Right to work in the UK. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Ability to meet the security requirements above. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Willingness to work 10-hour shifts on a four-on, four-off rota, including weekends and bank holidays. Night shifts may follow as further systems come online and the service moves to 24/7. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Willingness and eligibility to travel to Bluestaq headquarters in the United States for onboarding, and occasionally to sites across the UK and Europe thereafter. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li /ul p strong span data-contrast= none span data-ccp-parastyle= heading 1 Nice to Have /span /span /strong span data-ccp-props= { quot;134245418 quot;:true, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559738 quot;:220, quot;335559739 quot;:90} nbsp; /span /p ul li span data-contrast= none Familiarity with NATO structures, the NATO Communications and Information Agency (NCIA), the MOD or other allied defence programmes. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Linux certification such as RHCSA, RHCE or LPIC. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none CISSP, CompTIA Security+ or an equivalent security certification. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Experience with CI/CD pipelines, DevSecOps or Secure by Design delivery. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Experience with database administration or data-platform operations. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none A background in cloud, cyber security or C4ISR environments. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; br br /span /li /ul p strong span data-contrast= none span data-ccp-parastyle= heading 1 Why Join Us /span /span /strong span data-ccp-props= { quot;134245418 quot;:true, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559738 quot;:220, quot;335559739 quot;:90} nbsp; /span /p ul li span data-contrast= none Workplace pension through salary exchange. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Group income protection and group life assurance from day one. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none 33 days’ annual leave including bank holidays, applied to your shift pattern. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Private medical cover and 24/7 remote GP access for you and your family. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li li span data-contrast= none Professional subscription support and ongoing development. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:70, quot;335559740 quot;:264} nbsp; /span /li /ul p span data-contrast= none Bluestaq Ltd is an Armed Forces Covenant signatory. Service leavers and reservists who know watch-keeping, escalation and operating under pressure will recognise this work. /span span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:120, quot;335559740 quot;:276} nbsp; br br /span /p p strong span data-contrast= none span data-ccp-parastyle= heading 1 Apply /span /span /strong span data-ccp-props= { quot;134245418 quot;:true, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559738 quot;:220, quot;335559739 quot;:90} br /span strong span data-contrast= none If you meet most of the criteria, apply through this listing with your CV. /span /strong span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335559739 quot;:180, quot;335559740 quot;:276} nbsp; /span /p div class= content-conclusion p strong Join the Mission br /strong Protect data that matters. Build capability the United Kingdom depends on. Launch into operations, not pitch decks. /p p em span data-contrast= none Bluestaq Ltd is committed to an inclusive workplace. We welcome applications from all backgrounds, including career returners, service leavers, reservists and people underrepresented in defence technology. We recruit on capability and potential in line with the Equality Act 2010. If you need reasonable adjustments at any stage, tell us when you apply. /span /em span data-ccp-props= { quot;201341983 quot;:0, quot;335551550 quot;:6, quot;335551620 quot;:6, quot;335557856 quot;:16314602, quot;335559685 quot;:180, quot;335559737 quot;:180, quot;335559739 quot;:140, quot;335559740 quot;:276, quot;335572071 quot;:8, quot;335572072 quot;:8, quot;335572073 quot;:12874308, quot;335572075 quot;:8, quot;335572076 quot;:8, quot;335572077 quot;:12874308, quot;335572079 quot;:8, quot;335572080 quot;:8, quot;335572081 quot;:12874308, quot;335572083 quot;:8, quot;335572084 quot;:8, quot;335572085 quot;:12874308, quot;469789798 quot;: quot;single quot;, quot;469789802 quot;: quot;single quot;, quot;469789806 quot;: quot;single quot;, quot;469789810 quot;: quot;single quot;} nbsp; /span /p p em We are proud to support the Armed Forces Covenant. Service leavers and reservists who know watch-keeping, escalation and operating under pressure will find this role speaks their language. /em em br /em /p hr p class= font-claude-response-body break-words whitespace-normal em When you apply to a job on this site, the personal data contained in your application will be collected by nbsp;Bluestaq LLC ( Controller ), located at 2 S. Cascade Ave., Ste 200, Colorado Springs, CO 80903, contactable at ----- Controller’s data protection officer is Ashley Higgins, who can be contacted at ----- p class= font-claude-response-body break-words whitespace-normal em Your personal data will be processed for the purposes of managing Controller's recruitment activities, including setting up and conducting interviews and assessments, evaluating results, and other steps in the recruitment and hiring process. This processing is lawful under Article 6(1)(f) of the UK GDPR as necessary for Controller's legitimate interests in soliciting, evaluating, and selecting applicants for employment. /em /p p class= font-claude-response-body break-words whitespace-normal em Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider based in the United States engaged by Controller to help manage recruitment on its behalf. Your data will accordingly be transferred to the United States once submitted. Greenhouse is certified under the UK Extension to the EU-U.S. Data Privacy Framework, which the UK government has confirmed provides an adequate level of protection for personal data transferred from the UK. /em /p p class= font-claude-response-body break-words whitespace-normal em Your personal data will be retained for strong /strong 180 days from the date of your application, reflecting the time limit (including possible extensions) for bringing recruitment-related legal claims in the UK, after which it will be deleted or anonymised. If you are hired, your application data will become part of your employee record, retained in accordance with our employee privacy notice. /em /p p class= font-claude-response-body break-words whitespace-normal em Under the UK GDPR, you have the right to request access to, rectification of, or erasure of your personal data, and to request that processing be restricted. You also have the right to object to processing carried out on the basis of legitimate interests, and the right to data portability. You may lodge a complaint with the UK Information Commissioner's Office (ICO) at ico.org.uk or 0303 123 1113. /em /p p nbsp; /p /div Find Jobs in United Kingdom on Arbeitnow
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Senior Systems Administrator (Linux) at Bluestaquk | Verified Tech Jobs