Senior IT Systems Engineer

Senior IT Systems Engineer

Corsham Full-Time 40800 - 50400 £ / year (est.) No home office possible
Mass Consultants Ltd

At a Glance

  • Tasks: Join us as a Senior ICT Systems Engineer, solving problems and delivering top-notch support.
  • Company: MASS is a tech company focused on data value in secure environments, especially in defence.
  • Benefits: Enjoy 25 days leave, private medical insurance, and a wellbeing allowance, plus more perks!
  • Why this job: Be part of a friendly team where your skills make a real impact in exciting projects.
  • Qualifications: Experience with server architecture, Windows environments, and network infrastructure is essential.
  • Other info: Must be eligible for UK government DV-Level security clearance due to project requirements.

The predicted salary is between 40800 - 50400 £ per year.

Senior IT Systems Engineer – Corsham (SN13) – Permanent – Full Time

Salary: £45,000 – £65,000

  • 25 days annual leave (inclusive of up to 3 days December shut-down)
  • Buy or sell up to 5 annual leave days
  • Two pension schemes to choose from
  • Private Medical & Dental Insurance + discounts for additional family members
  • Life Assurance scheme up to 4 x salary
  • Multiple Save schemes
  • Electric/Hybrid Car leasing scheme
  • Cycle to work scheme
  • Retail discounts
  • Continuous Professional Development support
  • Annual Wellness Allowance

We’re looking for a dependable, hands‑on Senior IT Systems Engineer to help keep our secure environments running efficiently. From third‑line issue resolution to contributing to infrastructure improvements and projects, this is a varied role with a strong focus on virtualisation and Windows Server technologies. If you\’re calm under pressure, methodical in your work, and keen to have a meaningful impact in a high‑assurance setting, this could be your next move.

This is a role for a seasoned infrastructure engineer who’s confident supporting on‑premise systems in a highly secure, air‑gapped environment. You’ll take ownership of third‑line incidents, contribute to technical upgrades, and play an active role in maintaining availability and performance across our virtual and physical environments.

Your day will include supporting and improving VMware infrastructure, administering Windows Server environments, and helping ensure continuity through effective backup, recovery, and change management practices.

You’ll work on site at our unique facility to support and improve air‑gapped infrastructure. This is a collaborative, hands‑on role, working closely with internal delivery teams in a high‑trust environment.

How you’ll support us

You’ll provide reliable third‑line support, resolving incidents and troubleshooting issues across our secure infrastructure. Day to day, you’ll maintain and administer Microsoft Windows Server environments, including Active Directory, while supporting and enhancing our VMware‑based virtual infrastructure. You’ll also manage backup and recovery processes using Veeam, ensuring data resilience and business continuity. Part of your role will include keeping technical documentation up to date, and contributing to service stability through proactive maintenance, system improvements, and adherence to change control processes.

The invaluable experience you’ll bring, to help us achieve more

We’re expecting that you’ve done this role before, so you’ll know how to do it whilst spinning multiple plates:

Essential experience

  • Proven experience in server infrastructure support and administration
  • Solid knowledge of VMware technologies (vSphere, ESXi, vCenter)
  • Hands‑on experience with Microsoft Windows Server, Active Directory, Group Policy

Desirable experience

  • Exposure to HP infrastructure (e.g. Synergy, OneView, SAN)
  • SharePoint 2016 support and administration
  • Familiarity with Windows Server roles such as DFS, DHCP, DNS, Clustering
  • Experience with Veeam backup and replication toolsUnderstanding of ITIL principles and service management
  • Basic Linux knowledge

Our non-negotiables

Due to the highly secure nature of the projects that you will be involved with, you must be:

  • A UK National and eligible to work in the UK
  • Eligible to obtain and maintain a UK Government Developed Vetting (DV) clearance

Who is MASS?

MASS is an independent, global technology company, trusted by highly secure organisations to provide advanced, digital services that manage data and keep information safe. With our heritage in defence, we offer robust solutions to sectors where security expertise is essential.

We work in partnership with customers, using skilled, technical experts. We think innovatively to provide tailored, agile and resilient solutions that secure advantage, so you’re ready for digital transformation. MASS is an equal opportunities employer; we know that our people are smart, skilled and motivated and in return we provide a friendly workplace where everyone is valued and has the chance to make an impact.

Apply today

Apply today to see how working for MASS could work for you!

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Senior IT Systems Engineer employer: Mass Consultants Ltd

MASS is an exceptional employer located in Corsham, offering a supportive and inclusive work culture that values each employee's contributions. With a strong focus on career development, generous benefits including private medical insurance, and a commitment to employee wellbeing, MASS provides a rewarding environment for Senior IT Systems Engineers to thrive and make a meaningful impact in the technology sector.
Mass Consultants Ltd

Contact Detail:

Mass Consultants Ltd Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior IT Systems Engineer

✨Tip Number 1

Familiarise yourself with the specific technologies mentioned in the job description, such as VMWare, Windows Server, and Active Directory. Having hands-on experience or relevant certifications can really set you apart during the interview process.

✨Tip Number 2

Prepare to discuss your problem-solving approach in detail. Think of examples where you've successfully resolved technical issues or improved systems, as this will demonstrate your methodical and dedicated approach to R&D.

✨Tip Number 3

Since communication is key for this role, practice articulating complex technical concepts in simple terms. This will help you convey your ideas effectively during interviews, especially when discussing solutions with non-technical stakeholders.

✨Tip Number 4

Research MASS and their projects, particularly in defence and secure environments. Understanding their mission and values will allow you to tailor your responses and show how you can contribute to their goals.

We think you need these skills to ace Senior IT Systems Engineer

Server Architecture
VMWare
Veeam
Windows Server
Active Directory
SharePoint
Network Infrastructure
Firewalls
Switches
Routers
Intrusion Prevention Systems (IPS)
Intrusion Detection Systems (IDS)
Linux
ITIL
Problem-Solving Skills
Communication Skills
Team Collaboration
Customer Service Orientation
Adaptability
Attention to Detail

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience and skills that align with the job description. Focus on your expertise in server architecture, VMWare, and Windows Server, as well as any experience with network infrastructure.

Craft a Compelling Cover Letter: Write a cover letter that showcases your problem-solving abilities and methodical approach to R&D. Mention specific examples of how you've provided exceptional support in previous roles, particularly in high-pressure environments.

Highlight Security Clearance: Since the role requires UK government DV-Level security clearance, make sure to mention your eligibility and willingness to undergo the necessary checks. This will demonstrate your understanding of the importance of security in this position.

Showcase Communication Skills: Emphasise your ability to communicate effectively at all levels. Provide examples of how you've successfully collaborated with teams or clients to ensure understanding and deliver first-class service.

How to prepare for a job interview at Mass Consultants Ltd

✨Showcase Your Technical Skills

Make sure to highlight your experience with Server Architecture, VMWare, and Windows Server during the interview. Be prepared to discuss specific projects where you successfully implemented these technologies.

✨Demonstrate Problem-Solving Abilities

Prepare examples of how you've tackled complex IT issues in the past. This role requires a methodical approach to problem-solving, so be ready to explain your thought process and the outcomes of your solutions.

✨Communicate Effectively

Since the role involves communicating at all levels, practice explaining technical concepts in simple terms. This will show that you can provide first-class service to customers and collaborate well with team members.

✨Understand Security Requirements

Familiarise yourself with the security clearance process and be ready to discuss your willingness to undergo DV-Level security clearance. Understanding the importance of security in this role will demonstrate your commitment to the company's values.

Senior IT Systems Engineer
Mass Consultants Ltd
Location: Corsham

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