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Systems Administrator

Job in Belfast, County Antrim, BT1, Northern Ireland, UK
Listing for: Datactics
Full Time position
Listed on 2025-12-30
Job specializations:
  • IT/Tech
    Cybersecurity, IT Support
Job Description & How to Apply Below

About The Company

We are a fast-growing Belfast-based tech company, providing data quality and matching software to a growing number of international banks and to Government departments. Our software is sophisticated yet easy to use, and this is our key difference to the rest of the market: empowering business users to self-serve for data quality. We want to make it possible for banks and governments to have perfect data, fast, and without the nasty side-effects of chronic Excel addiction!

About

The Role

We are seeking a Senior Systems Administrator to help manage and improve our hybrid IT infrastructure and user estate.

Responsibilities
  • Manage core hybrid infrastructure: VMware, ESXi, Powerstore, Azure, AWS
  • Oversee network configuration:
    On-Premise switches & firewall, Cloud VPN & VPC, Wi-Fi Ubiquiti stack
  • Administer internal systems: backups, SIEM, IT equipment
  • Support company data protection and compliance practices
  • Lead or support cloud migration planning and implementation
  • Collaborate with internal teams to evolve infrastructure
User Estate
  • Manage company laptops (Windows and Linux)
  • Administer SaaS user directories and services
  • Oversee user provisioning for SaaS tools
Security
  • Assist in maintaining and renewing key certifications:
    Cyber Essentials & Cyber Essentials Plus, ISO/IEC 27001:2022, other standards where applicable
  • Contribute to internal security policies and testing procedures (security, performance, availability)
  • Support planning and execution of annual Disaster Recovery (DR) testing
  • Maintain and test Business Continuity Plans (BCP)
Documentation
  • Produce and maintain clear, accurate technical documentation in line with company policy
Staff Training
  • Provide internal training on infrastructure and cybersecurity topics
  • Act as a ‘buddy’ for new team members as needed
Other Responsibilities
  • Contribute to Proof of Concept (PoC) efforts for new tools and technologies
  • Support internal documentation for PoCs and production deployments
  • Undertake relevant certification study (e.g., VMware, Azure, AWS)
Criteria
  • Minimum 5 years’ experience managing on-premise networks, including VOIP
  • Practical knowledge of Disaster Recovery and Business Continuity implementation
  • Strong understanding of backup strategies (Windows/Linux VMs to Azure or AWS – HYCU knowledge desirable)
  • Strong hands-on knowledge of Linux and Windows operating systems (both server and desktop environments)
  • Proven experience leading migrations from on-premises to cloud environments
What We Offer
  • Opportunity to work on high-impact, technically challenging projects for some of the world’s leading organisations and UK Government departments
  • A collaborative and inclusive work environment in the heart of Belfast
Benefits
  • Competitive salary and pension scheme.
  • Membership to company private healthcare and employee benefits scheme (AXA) and pension scheme (Legal & General).
  • Salary sacrifice benefits scheme (Mintago).
  • 24 days annual leave (increasing to 30 days with length of service) + UK bank holidays.
  • Annual leave “buy back” scheme.

    Study/ personal development leave (1 day per month).
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