Job Search

Role Summary

The IT Infrastructure Engineer is a hands-on technical expert responsible for the design, maintenance, and ongoing improvement of the organisation's core IT infrastructure. This position ensures maximum availability, security, and performance across 24/7 business operations.

The role provides Level 1-3 support for a range of infrastructure and user technologies, including networks, server environments, cybersecurity systems, ITSM platforms, and enterprise applications.

Core ResponsibilitiesIT Operations

Operational Management: Maintain oversight of infrastructure performance, capacity planning, and system stability to ensure consistent uptime.

On-Call & Escalation: Participate in a scheduled on-call rotation providing out-of-hours support for critical incidents impacting 24/7 operations.

User Support: Provide technical support to users through the organisation's IT service management platform, ensuring issues are logged, tracked, and resolved efficiently.

Disaster Recovery & Business Continuity: Contribute to the design and testing of DR and BC plans, ensuring compliance with recovery time and recovery point objectives.

Change Management: Adhere to structured change control processes, ensuring updates and deployments are properly documented, tested, and implemented with minimal disruption.

Required Qualifications & Experience

5+ years' experience in an IT infrastructure engineering and support role.

Proven experience providing end-user support and participating in on-call coverage.

Strong expertise in Microsoft Windows Server, Active Directory, and Microsoft 365 administration.

Experience with enterprise device management platforms (e.g., Microsoft Intune or similar).

Hands-on experience with endpoint or extended detection and response platforms (e.g., EDR/XDR).

Solid knowledge of enterprise-grade networking hardware (e.g., Fortinet, Cisco, or similar).

Experience using an IT service management platform (e.g., Zendesk, ServiceNow, or equivalent).

Proficiency in PowerShell or similar scripting for automation and operational improvements.

Ability to perform under pressure and meet demanding deadlines.

Preferred Qualifications

Microsoft or equivalent vendor certifications.

Cybersecurity certifications.

Experience with Linux environments.

Key Competencies

Accountability: Dedication to maintaining uptime and resolving incidents promptly.

Proactivity: Ability to anticipate and mitigate risks before they impact operations.

Communication: Clear and effective communication with both technical and non-technical stakeholders.

Initiative: Self-motivated approach to troubleshooting and continuous improvement.

GCS is acting as an Employment Agency in relation to this vacancy.

Read less

Purpose of the role

To build and maintain infrastructure platforms and products that support applications and data systems, using hardware, software, networks, and cloud computing platforms as required with the aim of ensuring that the infrastructure is reliable, scalable, and secure. Ensure the reliability, availability, and scalability of the systems, platforms, and technology through the application of software engineering techniques, automation, and best practices in incident response.

To be successful in this role as an Infrastructure Engineer - Production Network Engineering, you should possess the following skillsets:

Extensive experience as an individual contributor in the design, build and operate of Telco hardened virtual infrastructure ecosystems for example Openstack, Kubernetes, QEMU, KVM, HCI spanning Cloud Platforms such as Public, Edge, Private and uCPE Platforms for example x86, Arm CPU architectures to enable the delivery of heterogeneous network systems, products and services at enterprise scaleDeep understanding of open-source networking technologies for example kernel (including eBPF, AF_XDP), OVS, OVN, SoNIC, DENT, Switchdev, ONF stack, Iwd, NetworkManager, including data path acceleration protocols and interfaces such as RDMA, RoCE, iWARP, NVMe, SR-IOV and DPDK, alongside familiarity with Cloud Native Functions and Container Networking Interface pluginsExperience in multi-layered IP Network engineering including good experience in network programming / automation, IaC, configuration management tools and data modelling for example RESTCONF, NETCONF/YANG, Python, Shell, Ansible, Saltstack, Terraform, CloudFormation, ARM; with demonstrable experience of DevOps, agile methodologies and CI/CD pipelines

GCS is acting as an Employment Agency in relation to this vacancy.

Read less

Role: Infrastructure Support Engineer (PKI) - DV Cleared
Duration: 6-month rolling
Rate: Up to £500/day Outside IR35
Location: UK Onsite

We are seeking a skilled PKI & Infrastructure Support Specialist to join our Customers IT Team. This role is key to ensuring the reliability, security, and compliance of our Public Key Infrastructure (PKI) services and related systems. You will provide expert support, manage critical certificates, maintain infrastructure, and enforce security policies.

Key Responsibilities include:

Deliver advanced 2nd and 3rd line support for PKI infrastructure, including root and issuing CAs, resolving issues related to certificate issuance, revocation, auto-enrolment, and chain validation.Respond to and manage incidents, service requests, and change tickets in line with SLA targets, ensuring timely and effective resolution.Configure, maintain, and support core systems such as AzureAD accounts, SSO applications, Microsoft Intune, and Microsoft Defender monitoring.Oversee CA operations, CRLs, OCSP responders, and backup CA keys; perform patching, updates, and maintain an up-to-date cryptographic inventory.Keep comprehensive PKI documentation, review audit logs, implement role-based access controls, and uphold revocation procedures and security best practices.

To find out more, please apply now or drop an email with a copy of your CV to [email protected]

GCS is acting as an Employment Business in relation to this vacancy.

Read less

IT Infrastructure Support Engineer - 18-Month Contract | Onsite, Cork

Location: Cork, Ireland
Duration: 18 Months
Start Date: ASAP
Daily Rate: Competitive, DOE

Overview
A global organisation in Cork is seeking an experienced IT Infrastructure Support Engineer to provide hands-on technical support across office and factory environments. This role is ideal for someone who enjoys being on the ground solving a wide range of IT and infrastructure challenges.

Key Responsibilities

Provide onsite support for desktops, laptops, mobile devices, printers, AV, and telephony systems.

Configure and deploy new hardware and software for new hires.

Troubleshoot LAN/WAN/Wi-Fi networks and escalate complex issues where needed.

Support infrastructure projects and global IT rollouts.

Perform cabling and patching in MDF and IDF environments.

Technical Environment
Windows 10/11, Office 365, Active Directory, Intune, Exchange, Cisco networking, macOS, iOS, ServiceNow (or similar).

Requirements

5+ years' IT Support or Infrastructure experience.

Excellent customer service and communication skills.

Strong troubleshooting ability and self-motivated approach.

Interested?
If you're an experienced support engineer based in Cork and available to start soon, apply now or message me directly for a confidential chat.

GCS is acting as an Employment Business in relation to this vacancy.

Read less

Role: Infrastructure Engineer - Production Network Engineering

Location: Knutsford, UK

Type: Permanent

Nature: 2 days onsite in office

Purpose of the role

To build and maintain infrastructure platforms and products that support applications and data systems, using hardware, software, networks, and cloud computing platforms as required with the aim of ensuring that the infrastructure is reliable, scalable, and secure. Ensure the reliability, availability, and scalability of the systems, platforms, and technology through the application of software engineering techniques, automation, and best practices in incident response.

Vice President Expectations

To contribute or set strategy, drive requirements and make recommendations for change. Plan resources, budgets, and policies; manage and maintain policies/ processes; deliver continuous improvements and escalate breaches of policies/procedures..If managing a team, they define jobs and responsibilities, planning for the department's future needs and operations, counselling employees on performance and contributing to employee pay decisions/changes. They may also lead a number of specialists to influence the operations of a department, in alignment with strategic as well as tactical priorities, while balancing short and long term goals and ensuring that budgets and schedules meet corporate requirements..If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L - Listen and be authentic, E - Energise and inspire, A - Align across the enterprise, D - Develop others..OR for an individual contributor, they will be a subject matter expert within own discipline and will guide technical direction. They will lead collaborative, multi-year assignments and guide team members through structured assignments, identify the need for the inclusion of other areas of specialisation to complete assignments. They will train, guide and coach less experienced specialists and provide information affecting long term profits, organisational risks and strategic decisions..Advise key stakeholders, including functional leadership teams and senior management on functional and cross functional areas of impact and alignment.

To be successful in this role as an Infrastructure Engineer - Production Network Engineering, you should possess the following skillsets:

Extensive experience as an individual contributor in the design, build and operate of network products across all 7 layers of the OSI stack from physical through to virtual. Experienced understanding of Layer 1 - 4 Protocols such as G.9802.1/WDM, Ethernet, VXLAN, TCP/IP, BGP, OSPF, IS-IS, Access Transport for example PON, xDSL, DOCSIS, FWA, Wireless Standards for example Wi-Fi, LTE, 5G, MEF Standards for example CE.3.0, LSO, Overlay IP/VPN technologies such as RFC2547bis, RFC7432, RFC8365/RFC9746, Software Defined Networking and Network Instrumentation technologies for example gNMI/gRPC, Y.1731, Y.1564, TWAMPExperience of virtual infrastructure ecosystems for example Openstack, Kubernetes, QEMU, KVM, HCI across Cloud Platforms (Public/Private/Hybrid) and uCPE Platforms (x86, aRM), including open networking technologies for example routing daemons (FRR, Bird, GoBGP), ONF stack, LINUX Networking (eBFF, VPP, AF_XDP), DENT, SONiC or CumulusGood experience in network programming/automation, IaC, configuration management tools and data modelling for example RESTCONF, NETCONF/YANG, Python, Ansible, Saltstack, Terraform, CloudFormation, ARM; with demonstrable experience of DevOps, agile methodologies and CI/CD pipelines

GCS is acting as an Employment Agency in relation to this vacancy.

Read less

GCS is acting as an Employment Agency in relation to this vacancy.

Read less