senior infrastructure engineer.

Type : Hybrid working 3-days a week onsite IR35: inside

Job Description:

Role Overview

• We are looking for a Senior Infrastructure Engineer (NetDevOps) to design, build, and evolve large-scale enterprise network platforms, with a strong focus on modern, automated, and cloud-integrated infrastructure.
• This role is suited to a hands-on engineer, not an operations or SRE specialist. You will be expected to quickly contribute to design and delivery activities, applying engineering best practice, automation, and network expertise to support critical services.
• You will work closely with Architecture, Cloud, and Engineering teams to deliver secure, scalable, and highly available network solutions, balancing immediate delivery needs with longer-term platform improvement.

Key Responsibilities

• Design, implement, and enhance enterprise network infrastructure across data centre, hybrid, and cloud environments
• Engineer and implement network traffic flows to support business-critical services
• Build and maintain secure hybrid connectivity across Azure, AWS, and OCI
• Implement and manage Palo Alto firewall policies across on-prem and cloud environments, aligned to Zero Trust principles
• Design and operate high-availability network services, including routing, segmentation, and resilience
• Develop and maintain network automation using tools such as Python, Ansible, and Infrastructure as Code
• Collaborate with architecture and platform teams to ensure solutions align with engineering standards and strategic direction
• Contribute immediately to delivery work, demonstrating the ability to operate with minimal ramp up
• Document designs and changes clearly and consistently, supporting maintainability and knowledge sharing

Essential Technical Skills (Priority Criteria)

Candidates must demonstrate strong, hands-on experience in the following areas:

1. Enterprise Networking Engineering

o Complex OSPF and BGP environments

o Designing and implementing secure, resilient traffic flows

o Strong understanding of typical enterprise and cloud network patterns

1. Firewall and Security Technologies

o Extensive experience with Palo Alto firewalls

o Policy design and implementation across data centre and cloud

o Zero Trust and secure network design principles

1. Data Centre & Network Architecture

o VXLAN / EVPN, VRF segmentation, and multi-site fabrics

o Experience with vendors such as Arista (or equivalent)

o Load balancing technologies (e.g. F5 BIG-IP: LTM / APM / ASM)

Automation & NetDevOps Capability

You will be expected to demonstrate a clear move away from traditional, manual networking, including:

• Network automation experience using Python, Ansible, or similar tooling
• Infrastructure as Code mindset (e.g. Terraform)
• Version control and CI/CD exposure (e.g. GitLab CI/CD)
• Applying DevOps-style practices to network and infrastructure engineering

Cloud & Hybrid Experience

• Strong working experience with at least one major cloud provider (Azure, AWS, or OCI)
• Designing and integrating hybrid cloud network solutions
• Understanding of cloud-native networking constructs and security models

Experience & Knowledge

• Proven track record as a Network / Infrastructure Engineer in large-scale enterprise environments
• Experience delivering engineering solutions, not just supporting operations
• Comfortable working across multiple workstreams and priorities
• Experience in regulated or complex environments (public sector experience beneficial but not essential)

Nice to Have

• Aruba Central / ClearPass
• SD WAN technologies
• SaaS and cloud-delivered WLAN / WiFi solutions
• Prior experience modernising legacy network environments

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