Senior Systems Engineer

Tetra Tech Europe; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

Tetra Tech Europe is seeking a Senior Systems Engineer II to design and optimize critical infrastructure for cloud and hybrid environments. You will play a key role in ensuring systems remain secure, reliable, and cost-effective while influencing the future of core IT services.

This position emphasizes technical leadership, automation, and stakeholder engagement in a hybrid working model with remote options. You will leverage advanced understanding of networking, systems administration, and cloud technologies.

Qualifications

• Substantial senior-level experience in systems administration or infrastructure engineering.
• Proficiency in managing cloud file storage platforms.
• Hands-on expertise with VDI solutions.

Responsibilities

• Design, maintain and optimize enterprise infrastructure.
• Lead complex infrastructure projects with risk and budget management.
• Drive automation and improve incident response approaches.

Skills

Infrastructure Strategy & Design

Technical Leadership & Enablement

Cloud Infrastructure Management

Scripting and Automation

Backup and Recovery Solutions

Education

Degree in Computer Science or Information Technology

Tools

Cisco UCS

VMware

Azure

Commvault

Job description

Purpose & Scope of the Role

As Senior Systems Engineer II, you will play a pivotal role in designing, optimising and governing critical infrastructure across datacentre, cloud and hybrid environments. You will help define technical direction, improve operational maturity, and ensure platforms remain secure, reliable and cost-effective. This role combines strategic oversight with deep technical delivery, supporting infrastructure architecture, automation, incident response, compliance, documentation, operational handover and project execution.

Your Impact in this position

You will influence the stability, performance and future shape of core IT services. Working closely with technical teams, vendors and stakeholders, you will identify opportunities to modernise systems, reduce manual effort, strengthen governance and improve service resilience. Your expertise will help ensure infrastructure decisions are aligned to business priorities, security expectations, operational standards and long-term value.

Core Capabilities

• Infrastructure Strategy & Design: Design, maintain and optimise enterprise infrastructure to deliver high availability, performance and reliability across cloud, datacentre and on‑premises platforms.
• Technology Evaluation & Adoption: Assess emerging and advanced infrastructure technologies, recommend fit‑for‑purpose solutions and support adoption of platforms that improve operational effectiveness.
• Technical Leadership & Enablement: Provide clear technical direction, mentor colleagues and support knowledge transfer to ensure smooth implementation and operational handover.
• Documentation, Standards & Governance: Maintain technical documentation, define standards and support consistent processes that strengthen operational quality and compliance.
• Automation, Resilience & Incident Response: Drive automation, improve provisioning and workflows, and support incident response approaches that protect service integrity and reduce manual intervention.
• Project Delivery & Stakeholder Engagement: Lead complex infrastructure projects, manage risk, budget and timelines, and communicate confidently with stakeholders and senior leadership.

Skills, Qualifications And Experience

You will bring substantial senior‑level experience in systems administration, infrastructure engineering or a similar technical role, ideally supported by a degree in Computer Science, Information Technology or equivalent practical experience.

You Will Also Have

• Hardware Expertise: Advanced understanding of enterprise‑grade servers (Cisco UCS Chassis and Blades, Dell), storage solutions and configurations (Pure, Qumulo), and data centre networking (Cisco switches).
• Cloud File Storage Solutions: Proficiency in managing cloud file storage platforms such as Nasuni, Azure Files, Qumulo, and Egnyte.
• Cloud Infrastructure Management: Significant experience with virtual machines, storage, networking, containerisation (Docker), and AI technologies on platforms including Azure and AWS.
• Virtualisation Technologies: Expert‑level knowledge of VMware and other hypervisor environments.
• Operating Systems Expertise: Thorough familiarity with Windows and Linux operating systems.
• Backup and Recovery Solutions: Hands‑on expertise with enterprise backup solutions, particularly Commvault.
• Scripting and Automation: Strong skills in PowerShell scripting, enabling effective task automation and system management.
• DaaS: Hands‑on expertise with VDI solutions (Citrix and VDA)
• Comprehensive understanding of LAN, WAN, network security protocols, and firewall configuration.
• In‑depth expertise in Cisco networking technologies and protocols, including TCP/IP, Fibre Channel, iSCSI, Storage Zoning, and FCoE.

Working Environment

The position is based on a hybrid model, mainly working from home but with monthly visits to an office or fully hybrid if preferred. Our datacentre is in Slough and attendance in the centre will be required (likely monthly). Remote and flexible working may be available depending on location and operational requirements.

Equal Opportunity / EEO Statement

In alignment with the Equality Act 2010, we will make reasonable adjustments to support candidates and employees requiring additional arrangements. This could include adaptations to work schedules, training approaches, or the physical workspace. Please inform us if you need any accommodations during the recruitment process or in your day‑to‑day role.