Job Description

Job Title: Senior Delivery Engineer - Arista Spine & Leaf (Inside IR35)

Location:

Ideally 1 day per week onsite in London

Contract Rate:

490 per day (Inside IR35)

Contract Type:

6months + (likely extension)

Role Overview

We are seeking a highly skilled

Senior Delivery Engineer

with a strong background in

Arista-based Spine and Leaf network architectures

to join a fast-paced technology environment, supporting mission-critical infrastructure with a focus on low-latency and high-performance networking.

You will lead and support the deployment and integration of complex network solutions based on

VXLAN and EVPN

, with an emphasis on

multicast routing

and

layer 2/3 switching

. The ideal candidate will have a deep understanding of

capital markets/trading environments

, where stability, scalability, and low-latency are paramount.

Key Responsibilities

Design, implement, and support

Arista Spine & Leaf

architectures across trading platforms. Deploy and manage

VXLAN/EVPN overlays

, ensuring high availability and optimal performance. Configure and troubleshoot

multicast networking

for Real Time data distribution. Deliver complex

routing and switching

configurations across data center and campus environments. Collaborate with internal stakeholders (network architects, traders, systems engineers) to ensure seamless infrastructure delivery. Maintain documentation and provide detailed handovers to operations teams. Participate in change control, incident management, and root cause analysis processes.

Key Skills and Experience

Mandatory:

Deep experience with

Arista Networks

, particularly

Spine and Leaf architectures

. Proficiency in

VXLAN

and

EVPN

configuration and troubleshooting. Strong

multicast networking

skills (PIM, IGMP, MSDP). High-level understanding and hands-on delivery of

routing (BGP, OSPF, ISIS)

and

switching (L2/L3)

. Background in

capital markets or trading environments

, understanding the criticality of low-latency and high-reliability infrastructure.

Desirable:

Exposure to

automation

tools (Python, Ansible) is a plus. Experience with network telemetry and monitoring systems. Arista certification (eg, ACE) highly desirable.

Work Environment

Hybrid:

1 day a week onsite in

London

, remainder remote.

Dynamic

, high-stakes setting within capital markets/trading environments. Working with cutting-edge technology stacks and financial trading systems.
Job Type: Full-time

Pay: 490.00 per day

Schedule:

Monday to Friday
Work Location: Hybrid remote in London EC4M

Reference ID: IN/DD/LS