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NineTech

Senior System Administrator

London
£70.00/hr
Posted 2 days ago
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Senior System Administrator

Senior Systems Administrator

Role: Senior Systems Administrator Contract Type: 6-Month Contract Rate: £520 per day Location: Hybrid Start: ASAP

About the Role

A leading Financial Services client is seeking an experienced Senior Systems Administrator to join their technology team on a 6-month contract.

This role is ideal for a candidate with a strong Managed Service Provider (MSP) background. You’ll work across multiple technologies, managing competing priorities to deliver enterprise infrastructure solutions in a fast-paced environment.

The successful candidate will-support and deliver complex projects in infrastructure, server, networking, cloud, and IoT, collaborating with internal stakeholders, vendors, and project teams to ensure secure, reliable, and scalable solutions.


Key Responsibilities

To excel in this role, you will:

  • Administer and support enterprise Windows and Linux server environments.
  • Deliver server engineering activities, including:
    • System deployments and upgrades
    • Patch testing and configuration validation
    • Operational support
  • Support and troubleshoot IoT devices, hardware integrations, and connected systems.
  • Configure and manage SaaS applications, including APIs, SAML, and OIDC authentication.
  • Work across enterprise networking technologies, such as:
    • Firewalls
    • Load balancers
    • Proxy services
    • Cloud-integrated infrastructure
  • Deliver infrastructure migrations, server deployments, device rollouts, and technical implementations.
  • Develop and maintain automation scripts using PowerShell, Python, Shell, or Perl.
  • Produce technical documentation tailored for both technical and non-technical audiences.
  • Collaborate with architects, project managers, vendors, and operational teams to ensure successful project outcomes.
  • Enforce security best practices for authentication, encryption, access control, and infrastructure management.
  • Support knowledge sharing and mentor junior team members as required.

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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It searches the market for you

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Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Strong

Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Strong

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Essential Skills & Experience

You should have:

  • Proven experience as a Senior Systems Administrator in MSP or enterprise environments.
  • Strong expertise in Windows and Linux administration.
  • In-depth knowledge of enterprise networking, including firewalls, load balancers, proxy services, and network security.
  • Experience supporting IoT/OT devices and hardware integration.
  • Proficiency with SaaS platforms, APIs, SAML, and OIDC.
  • Excellent scripting skills (PowerShell, Python, Shell, or Perl).
  • Hands-on experience with cloud platforms (Azure and/or AWS).
  • Strong troubleshooting, analytical, and problem-solving skills.
  • Effective communication and stakeholder management abilities.
  • Comfort working across multiple projects in a dynamic, fast-paced environment.

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Desirable Skills

While not essential, the following would be advantageous:

  • Strong MSP/Professional Services experience.
  • Experience in enterprise migration and transformation projects.
  • Cloud infrastructure and automation proficiency.
  • Knowledge in cybersecurity and identity management.
  • ITIL or equivalent service management experience.
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Skills

Windows Administration
Linux Administration
Networking
Firewalls
Load Balancers
Proxy Services
IoT Support
SaaS Platforms
APIs
SAML
OIDC
PowerShell
Python
Shell
Perl
Cloud Platforms

Location

London, England, United Kingdom

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