Job
The information below covers the role requirements, expected candidate experience, and accompanying qualifications.
Description
Senior
Network Engineer
Reporting to the
Network Manager, the
Senior Network Engineer will play a
critical role in delivering secure, high-performing, and resilient
network services across Sysco. The primary objective of this role
is to support and optimise Sysco’s enterprise network
infrastructure while ensuring operational excellence across a
complex, multi-site environment.
This role
involves working closely with the Sysco Global Network team and a
range of cross-functional stakeholders to ensure that network
operations, engineering activities, and project delivery remain
aligned with organisational standards and business requirements.
You will be responsible for maintaining and enhancing a broad array
of technologies across LAN, WAN, wireless, security, VPN, load
balancing, cloud networking, and automation, ensuring the seamless
operation of network services across the
estate.
This position is offered on a
hybrid basis from our
Dublin office (D11 VP3F) or
Limerick office (V42 XC04), with
flexibility to support campus environments, remote sites, and data
centres as needed.
Role
Responsibilities
You will maintain
and support critical network components across a large enterprise
landscape, ensuring the reliability and stability of environments
built on Cisco Catalyst and Cisco Nexus platforms, alongside VSS
and StackWise/FlexStack technologies. Your work will involve
monitoring and troubleshooting routing and switching environments
that rely on protocols such as OSPF, EIGRP, BGP and IBGP, as well
as delivering robust performance across VLAN and VRF-based network
designs.
The role will require hands-on support
of a diverse security estate, including Cisco ASA multi-context
firewalls, Check Point firewalls, content-filtering technologies,
and associated security controls. You will help safeguard the
organisation by applying strong network security practices across
all services, from campus wireless to VPN and remote access
environments.
You will take ownership of wireless
services built on Cisco Wireless Controllers and Motorola wireless
technology, ensuring stable and high-quality connectivity across
the enterprise. You will also support load balancing and
optimisation technologies such as F5, Bluecoat proxy services,
QoS-driven voice and video environments, and WAN optimisation
platforms including Cisco WAAS.
Day-to-day, you
will provide technical support via ServiceNow, performing incident
resolution, problem isolation, and root-cause analysis across LAN,
WAN, security, wireless, VPN and load-balancing services. You will
be expected to provide operational insight into complex issues,
often using diagnostic tools such as SolarWinds, Infoblox, packet
capture and trace analysis utilities, and other SNMP-based
monitoring platforms. Strong documentation capability using Visio
is required.
The role will also involve
contributing to network projects from design through to deployment,
across traditional infrastructure and cloud-based environments
including AWS, Azure and virtualised platforms. Experience with
automation and scripting, particularly using Python, will be
valuable in supporting Sysco’s drive towards standardisation and
efficiency.
You will deliver regular updates to
PMO teams, leadership, and operational stakeholders, ensuring
transparency and alignment across all network activities.
Supporting remote sites, corporate data centres, and campus
environments will form part of your remit, alongside participation
in the global on-call rotation to ensure continuity of
service.
Skills &
Experience
You will bring
extensive experience supporting large-scale enterprise networks,
with deep knowledge of Cisco-based infrastructure, modern routing
and switching practices, wireless environments, firewall and
security technologies, cloud networking, and load balancing. You
must be confident operating with considerable independence,
applying strong analytical thinking and technical judgement to
diagnose and resolve complex issues.
We are
looking for someone with vast hands-on experience in network
engineering, preferably supported by a degree in Computer Science
or an equivalent discipline, or significant practical experience.
Long-held Cisco certifications such as CCNP or CCIE are highly
desirable, as is experience working across diverse technologies and
large multi-site environments. xsngvjr Strong communication, documentation,
and stakeholder engagement skills are essential, alongside the
ability to work collaboratively within a global
team.