Senior Systems Administrator
Senior Systems Administrator

Senior Systems Administrator

London Full-Time 48000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Join our team to manage and upgrade IT systems for over 200 employees in London.
  • Company: Reward is dedicated to empowering employees through seamless IT operations and support.
  • Benefits: Enjoy flexible working, generous leave, private healthcare, and a vibrant social scene.
  • Why this job: Be part of a dynamic team that values innovation, collaboration, and employee well-being.
  • Qualifications: Strong knowledge of network technologies and experience with Windows Server and troubleshooting required.
  • Other info: Opportunity for mentorship and growth within a supportive environment.

The predicted salary is between 48000 - 84000 £ per year.

Senior Systems Administrator

Department: Technology

Employment Type: Permanent – Full Time

Location: London

Description

The System Administration team (Infra-SysOps or SA) is responsible for maintaining, upgrading, and managing Reward’s software, hardware, and IT networks, including data center and office LANs. At the heart of this role is a commitment to ensuring the seamless daily IT operations of over 200 employees .

A key focus of this role is to minimize IT friction for London-based staff, ensuring they can work efficiently without unnecessary blockers.

Success in this position requires proactiveness, resourcefulness, critical thinking, and strong communication skills . The ideal candidate should be able to diagnose and resolve issues quickly while providing clear updates to stakeholders. Additionally, they must be patient and adaptable , effectively communicating with interdisciplinary teams and mentoring junior and mid-level System Administrators within the team.

The ultimate goal is to ensure high availability, stability, and efficiency across Reward’s IT infrastructure, maintaining SLAs and minimizing downtime. Since our employees are our greatest asset, this role is essential in ensuring they feel IT-empowered and supported to perform at their best.

Key Responsibilities

  • Onsite London office 3 days per week (rota with other team members)
  • Occasionally may need to travel to Belfast office (adhoc support if when required)
  • Server support – Travel to Datacentre to install new, manage, upgrade break fix Production Server services onsite (Central London) carry out regular BAU monitoring and remediation works
  • IT Support (ZenDesk) – Proactive Daily monitoring and actioning of tickets is vital to a smooth painfree IT systems and processes
  • Providing proactive day to day management and support for Internet related infrastructure, including servers, routers, switches, VPN tunnels and personal VPN tokens, firewalls, mobile devices, tablets, wireless internet (wireless access points), and backup systems, within mission critical environments.
  • Managing, tracking and trouble-shooting issues, change controls, bespoke project rollouts and live fault escalations
  • Team player – Support and knowledge share to more Junior or Mid level SysAdmins
  • Release management & patching practices need to be followed and adhered too
  • Staff assistance and support for all IT system related queries (ZenDesk IT Helpdesk system)
  • Maintaining a high level of availability of services and minimising the risk of exposure to system downtime through continual monitoring of key systems
  • Improving process development, documentation and knowledge dissemination
  • Provision of out of hours support, with potential for oncall at some point
  • Improving system & automating repetitive jobs
  • Liaise closely with internal /external contacts to monitor and maintain current infrastructure while driving new technical projects forward
  • Liaising with suppliers and ordering hardware, software and consumables when required
  • Information security – Assisting in ensuring the Security of all IT systems in compliance with our PCI-DSS & ISO27001 Information Security certifications

Skills Knowledge and Expertise

  • Good knowledge with network routing, load balancers and switches, Intel-based server hardware, TCP/IP, DNS and other Internet related technologies: DHCP, VLANs, VPNs, Firewalls, IPS/IDS
  • The ability to support Windows Server 2019, 2022, Windows 10-11 desktop platforms to a very good level, Mac OSX is also desirable experience
  • Excellent hardware, technical trouble shooting and support knowledge – Laptops, Desktops and Servers, Firewalls, Load balancers, Switches, NAS backups etc.
  • Experience with network routing, load balancers and switches (Data centre & Office based setups)
  • Experience building, deploying, implementing and trouble shooting Servers, SANs, hardware devices
  • Experience working in pressure Server failover and backup restore situations with many moving parts and factors, out of box thinking at times
  • Excellent communication, interpersonal skills, problem solving skills with strong attention to detail
  • Initiative and ability to work in high change environments
  • Excellent written and verbal communication (to technical and business)
  • Strong proactive approach to updating documentation
  • Strong team and collaboration skills
  • Excellent work and task planning abilities, including time management
  • Able to cope with many different projects and initiatives simultaneously, and to deliver under pressure
  • Able to work autonomously and learn quickly
  • Good problem-solving skills
  • Willing to learn new skills and happy to take on new challenges

Benefits

  • Annual Leave: 25 days + bank holidays
  • Ability to buy and sell holiday days as well as the ability to bank days (tenure dependent)
  • Flexible working options: we are operating a hybrid working model with 3 days a week from the office
  • Pension: Hargreaves Lansdown – 6% matched contribution
  • Employee share scheme
  • Generous family friendly cover
  • Private healthcare – Bupa
  • Income protection
  • Critical illness cover
  • Life insurance cover
  • Dental cover
  • Optical cover
  • Yulife app for access to employee wellbeing and discounts
  • Perks at Work, cashback/discount shopping site
  • Employee referral scheme
  • Salary sacrifice program which includes cycle to work scheme, electric car scheme and season ticket loans
  • Volunteering program
  • Company events i.e. Christmas party, all-company event and other social/hosted events during the year (we have an active social committee!)
  • Team socials

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Senior Systems Administrator employer: Rewardinsight

At Reward, we pride ourselves on being an exceptional employer, offering a dynamic work environment in the heart of London. Our commitment to employee well-being is reflected in our generous benefits package, including flexible working options, private healthcare, and a robust pension plan. With a strong focus on professional growth, we provide ample opportunities for mentorship and skill development, ensuring that our team members feel empowered and supported in their roles.
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Contact Detail:

Rewardinsight Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Systems Administrator

✨Tip Number 1

Make sure to showcase your experience with network routing, load balancers, and switches during the interview. Be prepared to discuss specific scenarios where you successfully managed IT infrastructure in high-pressure situations.

✨Tip Number 2

Highlight your proactive approach to IT support. Share examples of how you've improved processes or documentation in previous roles, as this aligns with the company's focus on minimizing IT friction for employees.

✨Tip Number 3

Demonstrate your communication skills by preparing to explain complex technical issues in simple terms. This will show that you can effectively liaise with both technical and non-technical team members.

✨Tip Number 4

Be ready to discuss your experience with mentoring junior staff. The role emphasizes teamwork and knowledge sharing, so examples of how you've supported others will be valuable.

We think you need these skills to ace Senior Systems Administrator

Network Routing
Load Balancers
Switches
Intel-based Server Hardware
TCP/IP
DNS
DCHP
VLANs
VPNs
Firewalls
IPS/IDS
Windows Server 2019
Windows Server 2022
Windows 10-11
Mac OSX
Technical Troubleshooting
Server Management
Data Center Operations
Backup and Restore Procedures
Excellent Communication Skills
Interpersonal Skills
Problem-Solving Skills
Attention to Detail
Documentation Skills
Time Management
Ability to Work Under Pressure
Autonomous Work Capability
Adaptability
Team Collaboration

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in systems administration, particularly with Windows Server and network technologies. Use specific examples that demonstrate your problem-solving skills and ability to work under pressure.

Craft a Strong Cover Letter: In your cover letter, emphasize your proactive approach and communication skills. Mention how you can minimize IT friction for staff and support junior team members, aligning your experience with the key responsibilities outlined in the job description.

Showcase Technical Skills: Clearly list your technical skills related to server management, networking, and troubleshooting. Highlight any experience with specific technologies mentioned in the job description, such as VPNs, firewalls, and load balancers.

Prepare for Potential Questions: Anticipate questions related to your experience with IT support and system availability. Be ready to discuss specific scenarios where you successfully resolved issues or improved processes, showcasing your critical thinking and adaptability.

How to prepare for a job interview at Rewardinsight

✨Show Your Proactiveness

Demonstrate your proactive approach by sharing examples of how you've anticipated IT issues before they became problems. Discuss specific instances where your foresight helped minimize downtime or improve efficiency.

✨Communicate Clearly

Since strong communication skills are essential for this role, practice explaining complex technical concepts in simple terms. Be prepared to discuss how you would update stakeholders on ongoing issues and resolutions.

✨Highlight Team Collaboration

Emphasize your experience working with interdisciplinary teams. Share examples of how you've mentored junior staff or collaborated with other departments to achieve common goals, showcasing your team player mentality.

✨Prepare for Technical Questions

Brush up on your knowledge of network routing, server management, and troubleshooting techniques. Be ready to answer technical questions that assess your expertise with Windows Server, firewalls, and other relevant technologies.

Senior Systems Administrator
Rewardinsight
R
  • Senior Systems Administrator

    London
    Full-Time
    48000 - 84000 £ / year (est.)

    Application deadline: 2027-03-28

  • R

    Rewardinsight

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