ABACUS via Greenhouse

Senior Network Engineer

United Kingdom senior

still open verified 1d ago posted 30d ago seen 2h ago

Apply at abacustechnology.com

This is the employer's own posting, not a copy on a job board.

What we know

Is it still open?

Confirmed still open

Last checked 1d ago — checked against the employer's own applicant tracking system, which is the company answering directly.

We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.

Check this listing's status as JSON

How old is it?

Posted 30d ago

The date the source published, not the day we noticed it (2026-10-02). Last seen at its source 2h ago.

We have tracked this listing since 24 Oct 2026 (8 days). The employer's own board has carried it every time we have read it, most recently 2 hours ago.

Is it remote?

Remote in UK

That is the location the employer filed this posting under. Quoted as written — we do not re-word the source's own location.

Who may apply?

United Kingdom

The description states no restriction of its own. This is the source's own tag.

Pay not stated

Similar roles pay £92.7k–141.5k/yr

Middle 50% of 53 listings that do state pay — Engineering · Senior · United Kingdom · GBP/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.

Skills named in the ad

AWSAzureIncident ManagementMentoringNetwork SecurityNetworkingTroubleshooting

Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.

Carried by 1 source

Greenhouse employer's own board first seen 8d ago · last seen 2h ago

The listing

Job Summary:

As a Senior Network Engineer, you will bring your expertise with Cisco, Juniper, and next generation firewall technologies to the position. You will manage performance and availability of Abacus datacentre networks across the US and UK and participate in improvement projects. You will be part of a team tasked with maintaining a very level of availability and performance for datacentre services. You will also be a point of escalation for support incidents that affect multiple clients. Further, you will serve as a technical lead for internal and client projects, participating in client network builds.

Responsibilities:

Diagnose and resolve complex issues quickly, proactively identify areas for improvement, and recommend solutions.
Support and maintain network backbone infrastructure involving multiple datacenters and geographic regions based on dynamic routing protocols (OSPF, BGP), and various mediums (DIA, PTP, VPN, multi-gig connectivity,
cross-connects)
Work independently to lead medium sized client engagements involving equipment deployment, network design, or refresh tasks.
Provide escalation support for incidents involving client offices, Abacus datacenters, public cloud networks (Azure and AWS), and remote access (VPN, Citrix, etc.).
Support and maintain NGFW firewall configurations with the ability to troubleshoot datacenter and client environments.
Work directly with high profile clients to provide solutions that meet their needs, and account for critical dependencies to ensure seamless and effective resolution to problems.
Maintain a high level of communication and collaboration with internal Abacus teams to provide solutions and escalation support.
Create and maintain comprehensive documentation for Abacus and client infrastructure, processes, and procedures.
Stay abreast of the latest technological trends and recommend solutions to improve performance, security, and efficiency.
Provide guidance and mentoring to other team members to develop their skills.

Skills:

Strong experience deploying and managing Juniper hardware including SRX and EX platforms.
Strong experience deploying and managing Cisco hardware including ISR, ASR, Nexus, and Catalyst platforms.
Strong experience supporting NGFW solutions from Palo Alto, FortiNet, and Cisco.
A thorough understanding of the OSI network model, Ethernet, and TCP/IP networking concepts.
Excellent LAN/WAN fault diagnostic and troubleshooting skills, including in-depth knowledge of Spanning Tree,
TCP/IP, DHCP, DNS, BGP, OSPF, VPN, IPSEC, QoS, NATs and ACLs.
Experience managing datacentre networks, preferrable in a multi-tenant MSP environment. Ability to maintain network performance, identify issues and recommend solutions.
Experience with office network design, implementation, monitoring, and troubleshooting.
Experience leading client engagements with an ability to suggest innovative solutions.
Expertise leading technical projects from start to finish, ensuring they are completed on time, and to the client’s satisfaction including gathering requirements, planning, execution and post-implementation review.
Experience with network monitoring platforms
Solid understanding of virtualization and network integration with VMware infrastructure.
Experience maintaining network solutions based on Azure’s platform preferred.
Flexible and able to adapt to changing priorities and project requirements. Ability to effectively prioritize when faced with multiple tasks.
Strong and detailed documentation, interpersonal, and communications skills.
Willingness to learn new technologies and maintain industry knowledge.
Ability to work with and be a part of collaborative team environment.

Qualifications:

8 + years of Networking experience
CCNP, JNCIP or equivalent certification preferred
Bachelors degree a plus
MSP experience a plus
Flexibility for after hours and weekend work
Ability to work on call rotation
Ability to work 8/8.30am - 5/5.30pm shift.

The benefits package consists of:

Generous annual leave entitlement plus bank holidays (pro-rata if part-time working hours apply)
Gym discount
Life insurance
Comprehensive travel insurance for you and your family in line with scheme rules
Confidential well-being and counselling support
Competitive Compensation
Contributory pension scheme
Company events
Private Medical and Dental Insurance