Senior Network Engineer

CACI Ltd; Nechells; Hybrid; GBP 55,000 - 90,000; Full time

Job summary

CACI Ltd in the UK is seeking a Level 2 Network Engineer to join the UK Deployment Team, supporting planning, delivery and deployment of customer network infrastructure.

The role focuses on delivering network and security projects that enhance client infrastructure and ensure it can meet current and future business demands. You will apply strong routing/switching skills and work across DC, LAN and WAN environments.

Qualifications

• Experience with routing protocols and enterprise LAN/WAN/DC architectures.
• Experience in network migrations and transformation projects.
• Ability to design rack layouts and structured cabling for medium data centres.
• Strong TCP/IP, subnetting, VLAN, VRF, ACL, NAT, DNS and DHCP knowledge.
• Advanced troubleshooting with packet captures and logs.

Responsibilities

• Plan, manage and deploy technology changes for DC services.
• Deploy LAN infrastructure to support end user services.
• Create implementation and change verification plans.
• Document network estate for operations and change planning.
• Peer review deployment plans and provide feedback.

Skills

Routing & Switching

OSPF/BGP/EIGRP

VLAN & EtherChannel

LAN/WAN/DC architecture

Nexus/Catalyst VXLAN/EVPN

Troubleshooting

Tools

Cisco Nexus

Cisco Catalyst

vPC

VXLAN/EVPN

ACI

Job description

About CACI

From our headquarters in London, we’re busy empowering organisations to make bold, strategic moves with the power of data and technology. Founded in 1975, our operations take place from multiple offices across the UK, Europe and India with over 1600 full-time employees and an annual turnover of £179m.

Our expertise spans industries, from retail and education to public sector and transport – delivering intelligent solutions that drive progress and create measurable impact. Whether it’s business intelligence, customer marketing, cloud infrastructure, cybersecurity, critical national infrastructure or data management, our approach is never one-size-fits-all.

We don’t just deliver solutions; we build for the tomorrow’s world, all while fostering a culture that allows employees to be their authentic selves and succeed in their careers.

About Network Services

CACI Network Services is a rapidly expanding specialist IT and Networks consultancy offering a wide variety of opportunities to work within challenging and exciting environments with our major clients in Global Media, Banking, Government, Telecoms & Utilities.

The role

A Level 2 Network Engineer is required to join the UK Deployment Team, supporting the planning, delivery and deployment of customer network infrastructure.

The team delivers network and security projects that enhance client infrastructure and ensure it can meet current and future business demands.

Key responsibilities

Plan, manage and deploy technology changes to support DC services

• Deploy LAN infrastructure to support end user services requirements
• Includes patching schedules for facilities to cable network equipment
• Diagrams for Network Operations
• Inventory management

Create implementation plans for RFC’s to a high level of detail.

• Correctly document pre and post checks for change verification purposes
• Understand and document back out plans, clearly identifying back out points.
• Identify points of no return

Support the stability and uptime of essential services by planning changes with a documented best approach mind set.

• Identify where changes can be complete with zero downtime to hosted services.
• Plan and implement changes with a cost effective resource strategy.

Identify, understand and document change risks and mitigation tactics.

• Identify, understand and document impact of planned technology changes, including documentation expected output from verification.

Document network estate for Operation Support and to support change planning

Peer review and validation of technical deployment plans

• Provide constructive feedback to peers to support change control requirement and maintain high standards of detail and quality offered by CACI.

Core skills, knowledge and experience required

• Strong Routing & Switching knowledge

• Routing expertise including OSPF, BGP, EIGRP, summarisation, redistribution, route maps and path selection.
• Experience in configuring VLAN trunking, EtherChannel, Layer 2 redundancy.
• Enterprise LAN, WAN and data centre architecture experience.
• Data centre technologies including Cisco Nexus, Catalyst, vPC, VXLAN/EVPN, ACI and fabric architectures.

• Network migration and transformation projects
• Analyse, review and understand network topologies.

• Experience in designing rack layouts, structured cabling for medium DCs.

• Coordinate multiple projects, change management and governance efficiently working both independently and as a member of a team.

• Strong TCP/IP, subnetting, VLAN, VRF, ACL, NAT, DNS and DHCP knowledge.
• Advanced troubleshooting using packet captures, logs, flow data and monitoring tools.
• Resilient network design including HSRP/VRRP, port-channeling and redundant uplinks.
• Firewall, security zoning, rulebase and traffic-flow validation experience.
• Produces LLDs, implementation plans, test plans, handovers, as-built documentation and network diagrams.

• Good customer facing skills with the ability to keep the customer informed at all times and understand their requirements

Desirable skills (not essential)

• Automation / scripting experience in python

• Exposure to Ansible, Terraform, YAML, NetBox, Git or CI/CD pipelines.

Expected behaviours

We have a structured performance management framework which measures continual attainment against key personal behaviours. We believe this is an important part of our success and culture. Joining as a team member we expect you to act as a role model and exemplar against these behaviours which are to be:

• Proactive
• Adaptable
• Flexible
• A team player
• Reliable

Flexibility

The key to our success is our teamwork and collaboration. We take a hybrid approach – working remotely and coming into the office depending on the business demand and collaboration required as part of the delivery process.

Equal opportunities

CACI is proud to be an equal employer. Embracing the diversity of our people, we are on a journey to build a truly inclusive work environment where no one is treated less favorably due to ethnic origin, age, gender, veteran status, religion or belief, sexual orientation, marital status, and disability or health condition, actively working to prevent discrimination.