Network Engineer-F5 Big-IP in Cheshire, Warrington

HCLTech is a global technology company, spread across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services.

We are powered by our people - a global, diverse, multi-generational talent representing 161 nationalities whose unique spark, perspective and boundless passion drive our culture of proactive value creation and problem-solving. Our purpose is to bring together the best of technology and our people to supercharge progress for everyone, everywhere - our clients, partners, their stakeholders, communities, and the planet. As a company, we are deeply focused on accelerating our ESG agenda. We are also creating technology-enabled sustainable solutions with and for our clients and partners. We embed ESG imperatives into every aspect of our business and ensure that the progress we supercharge is responsible, inclusive and beneficial to all our stakeholders in the long term. We have committed to achieving net zero by 2040.

Location: Edinburgh, Leeds, Halifax, Manchester or Bristol

Hybrid mode: 2 days week (Work from client location)

This will be a fixed term contract - 6 months initially.

Skillsets required:

• Expertise: F5 Big-IP (LTM, GTM/DNS, APM, AWAF), Jenkins, GitHub
• Proficient: DO, AS3, Python and enterprise integrations
• Familiarity: AppViewX ADC
• Strong understanding: Network technologies, IP Routing protocols, and Firewalls.
• Experience: Cloud based architectures, CaaS, IaaS.
• Knowledge: Traditional datacentre hosted architectures
• Understanding: Operational Resilience and Security, Agile methodologies and tooling such as Jira and CI/CD pipelines.

Scope of services:

Seeking an Infrastructure engineer with exposure to F5 Networking services. The Study Engineer sits at the front end of delivery. Their job is to take a customer or programme requirement and turn it into a clear, build-ready technical solution for the Delivery and Service teams. The Study Engineer is responsible for the technical discovery and design that happens before build and implementation.

Responsibilities include:

• Understand application, traffic, security, and resilience requirements.
• Determine whether an existing F5 pattern can be used or whether a bespoke design is required.
• Produce design and handover artefacts:

• A key output of the Study Engineer is documentation that enables delivery without ambiguity.
• Approved F5 pattern selection or design alignment.
• Completed Study → Delivery handover details (VIPs, SSL, persistence, policies, routing, etc.).
• Identification of risks, assumptions, and dependencies before build.

This ensures Delivery engineers can execute without rework or clarification loops:

• Bridges architecture, security, and delivery.
• Study Engineers act as a technical translator across teams.
• Align solutions with security and governance expectations.
• Ensure designs are compatible with the current F5 estate and tooling.
• Validate that what’s being requested is achievable within platform standards.

Needs strong F5 & networking expertise:

Although they may not always build configurations themselves, Study Engineers need deep technical understanding to design effectively:

• F5 BIG-IP modules (LTM, DNS/GTM, APM, AWAF).
• SSL/TLS, traffic management, persistence, health monitoring.
• Network fundamentals (routing, firewalls, segmentation).
• Automation and tooling awareness (e.g. AppViewX, AS3/DO).