Senior Systems Engineer

Senior Systems Engineer

Full-Time 55000 - 65000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Take ownership of Unix/Linux platforms, solving complex issues and optimising environments.
  • Company: Join Capita, a leader in consulting and digital services, driving innovation.
  • Benefits: Enjoy home-based work, generous holiday, and opportunities for professional development.
  • Other info: Collaborative culture with a focus on growth, inclusion, and community impact.
  • Why this job: Make a real impact while working with cutting-edge technology in a dynamic environment.
  • Qualifications: Strong Unix/Linux engineering skills and experience in enterprise environments required.

The predicted salary is between 55000 - 65000 £ per year.

If you're an experienced Unix/Linux engineer who thrives on variety - BAU, projects, problem-solving, and new tech - this is a brilliant opportunity to join a team where no two days look the same. You'll provide advanced 3rd (and sometimes 4th) line expertise across on-prem, hybrid and public cloud Unix/Linux platforms, supporting a multi-client estate and helping keep critical services running smoothly.

What we're looking for:

  • Proven experience in a 3rd Line Support / Infrastructure Engineer (or similar senior technical) role supporting large, enterprise environments
  • Strong recent experience managing Unix/Linux server platforms in production
  • In-depth admin knowledge across multiple OSs such as: RHEL (v7+) / Oracle Linux (v7+) / SUSE (v15+) / Ubuntu (v18+) / AIX (v7.2+) including System P virtualisation (LPARs), PowerHA/SystemMirror/Cluster Aware AIX/HACMP & Solaris (10/11) (including Perl scripting)
  • Experience supporting environments with Oracle RAC
  • Experience working across public cloud platforms such as Azure, AWS, PowerVS, Oracle Cloud
  • Strong troubleshooting and analytical skills with the ability to provide clear, actionable solutions
  • Confident communication - able to explain complex issues to technical and non-technical stakeholders, including senior audiences

This position requires Security Clearance (SC) eligibility, and candidates must be UK-based.

What you'll be doing:

  • As a Senior Systems Engineer, you'll take end-to-end ownership across the platform lifecycle, from building and optimising environments to leading on complex incidents and improvements.
  • Lead the administration, configuration and support of Linux and Unix environments (e.g., RedHat, SUSE, AIX, Solaris) in line with operational processes and policies
  • Act as the technical owner for priority and complex incidents, providing deep troubleshooting, resolution and clear stakeholder updates throughout
  • Work across BAU and project delivery, contributing to upgrades, migrations, and infrastructure improvements
  • Build and support servers across a range of environments, including cloud and platform-specific Unix estates
  • Drive root cause analysis for recurring issues and implement long-term corrective actions
  • Assess and execute change in line with ITIL-aligned service management
  • Support enterprise toolsets and services that run across Unix/Linux environments
  • Collaborate with internal teams and third parties/suppliers to deliver effective outcomes
  • Author and maintain high-quality documentation (procedures, diagrams, KB articles)
  • Support DR planning and testing and ensure security/compliance best practices are met

Please note that this role participates in an out-of-hours on-call rotation (currently 1 in 4). Coverage is 6pm-8am Monday-Friday, plus the full weekend.

What's in it for you?

  • Homebased working
  • 23 days' holiday (rising to 27) with the opportunity to buy extra leave
  • Company matched pension, life assurance, 15 weeks' fully paid maternity, adoption and shared parental leave, paternity pay of two weeks
  • Volunteering for our charity partners or a cause of your choice - opportunity to take a paid day out of the office
  • Access to our Employee Network Groups, which represent every strand of diversity and allow colleagues to connect and learn from each other on an open, inclusive platform
  • Opportunity to gain additional qualifications through our Learning Academy or apprenticeships to help develop your career

At Capita, your career can take you wherever your ambition leads. You'll become part of a diverse network of talented, forward-thinking professionals working across a wide range of disciplines and sectors. We're committed to your growth - offering endless opportunities to expand your skills, explore new paths, and advance your career.

Join us and discover a career with purpose.

Senior Systems Engineer employer: Capita Shared Services Limited

Capita is an exceptional employer that fosters a collaborative and innovative work culture, offering Senior Systems Engineers the chance to engage in diverse projects across various sectors, including government and healthcare. With a strong commitment to employee development, you will benefit from extensive growth opportunities, flexible home-based working, and a comprehensive benefits package that includes generous holiday allowances and support for further qualifications. Join us to make a meaningful impact while advancing your career in a supportive environment that values creativity and inclusion.
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Contact Detail:

Capita Shared Services Limited Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Systems Engineer

✨Tip Number 1

Network like a pro! Reach out to your connections in the industry, attend meetups, and join relevant online forums. You never know who might have the inside scoop on job openings or can put in a good word for you.

✨Tip Number 2

Prepare for interviews by practising common technical questions related to Unix/Linux systems. We recommend setting up mock interviews with friends or using online platforms to get comfortable explaining your thought process.

✨Tip Number 3

Showcase your problem-solving skills! During interviews, share specific examples of how you've tackled complex issues in past roles. This will demonstrate your ability to handle the challenges of a Senior Systems Engineer.

✨Tip Number 4

Don't forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you're genuinely interested in joining our team at Capita.

We think you need these skills to ace Senior Systems Engineer

Unix/Linux Engineering
3rd Line Support
Infrastructure Engineering
RHEL (v7+)
Oracle Linux (v7+)
SUSE (v15+)
Ubuntu (v18+)
AIX (v7.2+)
Solaris (10/11)
Perl Scripting
Oracle RAC Support
Public Cloud Platforms (Azure, AWS, PowerVS, Oracle Cloud)
Troubleshooting Skills
Analytical Skills
Communication Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that match the Senior Systems Engineer role. Highlight your Unix/Linux expertise and any relevant projects you've worked on. We want to see how you can bring value to our team!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about this role and how your background makes you a perfect fit. Don’t forget to mention your experience with cloud platforms and troubleshooting skills.

Showcase Your Problem-Solving Skills: In your application, give examples of complex incidents you've resolved or improvements you've implemented. We love seeing how you tackle challenges, so don’t hold back on sharing those success stories!

Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It’s quick and easy, and it helps us keep track of your application. Plus, you’ll get to explore more about what we do at Capita!

How to prepare for a job interview at Capita Shared Services Limited

✨Know Your Unix/Linux Inside Out

Make sure you brush up on your knowledge of Unix/Linux systems, especially the specific versions mentioned in the job description. Be prepared to discuss your hands-on experience with RHEL, Oracle Linux, and other OSs, as well as any troubleshooting scenarios you've faced.

✨Showcase Your Problem-Solving Skills

Prepare examples of complex incidents you've resolved in previous roles. Highlight your analytical skills and how you approach root cause analysis. This will demonstrate your ability to provide clear, actionable solutions under pressure.

✨Communicate Clearly and Confidently

Practice explaining technical concepts in simple terms, as you'll need to communicate with both technical and non-technical stakeholders. Think of examples where you've successfully communicated complex issues to senior audiences.

✨Familiarise Yourself with Cloud Platforms

Since the role involves working across public cloud platforms like Azure and AWS, make sure you understand their basics and how they integrate with Unix/Linux environments. Be ready to discuss any relevant projects or experiences you've had in cloud settings.

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